[Event "Mar del Plata"]
[Site "1"]
[Date "1928.??.??"]
[Round "7"]
[White "Hernandez, JB."]
[Black "Grau, Roberto"]
[Result "0-1"]
[ECO "D02"]
[Annotator "JvR"]
[PlyCount "134"]
[EventDate "1928.03.??"]
[SourceDate "1999.07.01"]

{All classical international chess events in Mar del Plata and a selection of
tournaments in Buenos Aires are presented.   The tournaments in Mar del Plata
started with South American Chess Championships. Number one had been
Montevideo 1921/22 and won by Roberto Grau. The second, Montevideo 1925, had
Louis Palau as winner. Seventeen players participated in number three, Mar del
Plata (8-30 iii) 1928. Again Argentinians dominated the event.} 1. d4 Nf6 2.
Bf4 e6 3. e3 d5 4. Nf3 Nbd7 5. Nbd2 Be7 6. Bd3 O-O 7. O-O $5 Nh5 8. Bg3 Nxg3 9.
hxg3 f5 10. c4 c6 11. Qc2 Bd6 12. cxd5 cxd5 13. Rfc1 Nf6 14. Nb3 $5 Ng4 $1 {
Black takes the initiative on the kingside.} 15. Be2 Rf6 $1 16. Nc5 Rh6 17. Nd3
Qe8 18. Ng5 Qg6 19. Nh3 Nxe3 $6 {Grau sacrifices a piece for an attack on the
kingside. He could have developed his queen's bishop.} 20. fxe3 $6 {
White should have postponed this capture.} (20. Qxc8+ $1 Rxc8 21. Rxc8+ Kf7 22.
Ndf4 Qf6 23. fxe3 {gains a material plus.}) 20... Qxg3 21. Kf1 $5 Qxe3 $5 22.
Ndf2 $2 {He misses an effective counteraction.} (22. Qa4 $1 Rf6 23. Rc3 {
leads to chances for both sides.}) 22... Qxd4 {
Grau has won four pawns for a piece.} 23. Rd1 Qh4 24. Qc3 Bd7 25. Qd4 Qxd4 26.
Rxd4 Rc8 27. Nd3 Bc6 28. Rc1 Rd8 29. Nb4 Bxb4 30. Rxb4 e5 $1 {
The pawn avalanche cannot be stopped.} 31. Kf2 Rhd6 32. Rd1 h6 33. Ng1 Kf7 34.
Nf3 Kf6 35. Bb5 d4 36. a4 Bd5 37. a5 Rc8 38. Re1 Bxf3 39. gxf3 b6 40. Bd3 Rc5
41. a6 $5 g5 42. Rh1 Kg6 43. Ra4 Re6 44. Re1 Rd6 45. Ra3 h5 $1 46. b4 Rc3 $1
47. Rxc3 dxc3 48. Ke3 g4 49. fxg4 hxg4 50. Rc1 Rc6 51. Bb5 Rc7 52. Kd3 g3 53.
Ke3 Kg5 54. Kf3 f4 55. Bd3 Rc8 56. Rc2 Kf6 57. Ke4 Ke6 58. Bf1 Rd8 $1 59. Bh3+
Kf6 60. Rxc3 Rd4+ 61. Kf3 Kg5 62. Rc7 e4+ $1 63. Ke2 Rxb4 64. Rxa7 Rb2+ 65. Kf1
f3 66. Ke1 e3 67. Rd7 e2 {Passed pawns  are going to queen.} 0-1

[Event "Mar del Plata"]
[Site "1"]
[Date "1928.??.??"]
[Round "15"]
[White "Grau, Roberto"]
[Black "De Souza Mendes, Joao"]
[Result "1-0"]
[ECO "B13"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1928.03.??"]
[SourceDate "1999.07.01"]

{The fight for the championship went between Grau, Palau and De Souza. Two of
them met in the penultimate round.} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6
5. c3 Nf6 6. Ne2 Bg4 7. Qb3 $5 Na5 8. Qa4+ Bd7 9. Qd1 $5 Qb6 10. O-O e6 11. Nd2
Bd6 12. f4 $5 Rc8 13. Nf3 Ne4 14. Ne5 Bb5 15. Ng3 $5 Nxg3 16. hxg3 Bxe5 $5 17.
fxe5 Bxd3 18. Qxd3 O-O $2 {White gets a target on the kingside.} ({
More solid is} 18... Nc6) 19. Qe2 $1 Nc6 20. Bg5 Rc7 21. g4 $1 {
The attack begins.} Ne7 22. Bxe7 $1 Rxe7 23. g5 $1 Qd8 $5 24. Rf4 Rc7 25. Qg4
$5 Kh8 $5 26. Raf1 $1 g6 27. Rf6 Qe8 28. Qxe6 $1 {
Grau ends the attack in order to gain material.} Qxe6 29. Rxe6 fxe6 30. Rxf8+ {
White has an extra pawn in the rook ending.} Kg7 31. Rf2 Rc6 32. Kf1 Ra6 33. a3
Rb6 34. Ke1 a5 35. Kd1 a4 36. Kc2 h6 $6 37. Rf1 $6 (37. gxh6+ $1 Kxh6 38. Rf7
Kg5 39. Rd7 Kf5 40. Rd6 Rb5 41. g4+ {wins quickly.}) 37... hxg5 38. g4 Rb3 $6
39. Rf6 Rb6 40. b3 $6 ({Better is} 40. c4 $1) 40... axb3+ 41. Kb2 Kh7 {
Grau gained the title in the last round. The final standings became: Grau 131/
2/16, Palau 121/2, De Souza 111/2, etc.} (41... Kh7 42. a4 $1 Kg7 43. a5 Ra6
44. Kxb3 Rc6 45. Kc2 $1 Ra6 46. Kb2 Rc6 47. Kb3 {(the king has made a triangle)
} Ra6 48. c4 $1 {wins for White.}) 1-0

[Event "Mar del Plata"]
[Site "2"]
[Date "1934.??.??"]
[Round "4"]
[White "Schwartzman, Aaron"]
[Black "Bolbochan, Jacobo"]
[Result "1-0"]
[ECO "D35"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1934.03.??"]
[SourceDate "1999.07.01"]

{Mar del Plata (15-31 iii) 1934 was the fourth championship of South America.
Fourteen men participated. The tournament became a race between the
Argentinians Schwartzman and Grau.} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Nbd7 5.
cxd5 exd5 6. Bf4 c6 7. e3 Nh5 8. Be2 $5 ({Theory is} 8. Bg5 $1 Be7 9. Bxe7 Qxe7
10. Be2 {(Saemisch - Spielmann, Wiesbaden 1925).}) 8... Nxf4 9. exf4 Bd6 10. g3
O-O 11. O-O Re8 12. Bd3 Nf8 13. Qc2 f6 $5 (13... Bg4 $1 14. Ne5 Bh5 {
gains a plus.}) 14. f5 $1 {Schwartzman has a pawn storm in mind.} Bd7 15. a3
Re7 16. Rfe1 Be8 17. Rxe7 Qxe7 18. g4 Bf7 19. Re1 Qd8 $5 20. Na4 h5 $5 21. h3
hxg4 22. hxg4 Rc8 $5 23. Nc5 Bb8 24. Qd2 ({Not} 24. Nxb7 $4 Qc7 25. Nc5 Qf4 {
(Lachaga).}) 24... b6 25. Ne6 $5 {White makes a valiant attempt.} Qd6 $1 {
Black defends well.} 26. g5 $5 Bh5 $6 (26... Re8 $1 27. gxf6 Nxe6 28. fxe6 Rxe6
29. fxg7 Qf4 $1 {leads to a positional edge for Black.}) 27. Qe3 Re8 $2 {
Bolbochan misses the proper defence.} (27... Qe7 $1 28. Nxf8 Qxe3 29. fxe3 $1
Rxf8 30. Kf2 {brings equality.}) 28. gxf6 $1 Bxf3 ({The pointe is} 28... gxf6
29. Qh6 $1) 29. Qxf3 Nxe6 {Black cannot deliver mate in one.} 30. fxe6 gxf6 31.
Bh7+ $1 Kg7 ({Or} 31... Kxh7 32. Qh5+ Kg7 33. Qf7+ $1 Kh6 34. Qxf6+ Kh5 35.
Re5+ {(Lachaga).}) 32. Qg4+ Kh8 33. Bg6 Qh2+ 34. Kf1 Re7 35. Re3 Qh1+ 36. Ke2
Qc1 37. Qh5+ {White will mate soon.} 1-0

[Event "Mar del Plata"]
[Site "2"]
[Date "1934.??.??"]
[Round "12"]
[White "Schwartzman, Aaron"]
[Black "Grau, Roberto"]
[Result "1/2-1/2"]
[ECO "D52"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1934.03.??"]
[SourceDate "1999.07.01"]

{When the penultimate round began, Schwartzman led half-a-point on Grau.} 1. d4
Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Qa5 7. Nd2 Bb4 8. Qc2 O-O 9.
Bxf6 Nxf6 10. Bd3 Re8 11. O-O e5 12. dxe5 Rxe5 13. cxd5 Bxc3 14. Nc4 Qxd5 15.
Qxc3 Rg5 {Grau plays an enterprising line of the Cambridge Springs.} 16. f3 b5
$5 {He tries to win and leaves his usual solid approach.} (16... Be6 {
occurred in Euwe - Bogoljubow, Netherlands 1928 (8).}) 17. Rad1 $1 bxc4 18.
Bxc4 $1 Qe5 $1 19. f4 {White threatens material.} Rxg2+ $1 20. Kxg2 Qe4+ $2 {
Grau continues his effort to win at a cost.} (20... Bh3+ $1 21. Kxh3 Qh5+ 22.
Kg2 Qg6+ 23. Kh1 Qe4+ {leads to perpetual check.}) 21. Kf2 $1 Bh3 22. Rg1 Ng4+
23. Ke2 $6 (23. Kg3 $1 Nxe3 24. Rde1 Qxc4 25. Rxe3 Qxc3 26. Rxc3 {
wins an exchange.}) 23... Bg2 24. Kd2 $5 Nf2 25. Rde1 Nh3 26. Bd3 Qf3 27. Ref1
$1 Nf2 $1 28. Kc2 Rd8 $1 29. Bc4 $5 Qe4+ 30. Kb3 Rb8+ 31. Ka4 $1 {
The white king is safe for the checks.} c5 $2 ({
Probably, the right order of moves is} 31... Nh3 32. b3 c5) 32. b3 $2 {
He could have captured the knight.} Nh3 33. Rxg2 Qxg2 34. Ka3 Qe4 $2 ({
Correct is} 34... Rd8 $1 35. Qa5 Qd2) 35. Rd1 Qe7 36. Rd5 Nf2 37. Rg5 $2 (37.
Qe5 $1 Qxe5 38. Rxe5 {gains a large positional advantage.}) 37... g6 38. Re5
Qc7 39. Qd2 Ng4 40. Rd5 Nf6 41. Rd6 {The game has become equal. Schwartzman
kept the lead. Both players drew in the last round. The final standings became:
Schwartzman 101/2/13, Grau 10, etc.} 1/2-1/2

[Event "Mar del Plata"]
[Site "3"]
[Date "1936.??.??"]
[Round "15"]
[White "Pleci, Isaias"]
[Black "Villegas, Benito"]
[Result "1-0"]
[ECO "E90"]
[Annotator "JvR"]
[PlyCount "119"]
[EventDate "1936.03.??"]
[SourceDate "1999.07.01"]

{The fifth South American chess championship was Buenos Aires 1934/35. Luis
Piazzini won. Number six became Mar del Plata (12-31 iii) 1936. Sixteen
players participated. Pleci and Schwartzman shared the lead, when the last
round began. It became an exciting finish.} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4.
Nf3 d6 5. e4 Nc6 6. Bg5 $5 h6 7. Bf4 Bg4 8. Be2 Bxf3 9. gxf3 $5 {
It is wiser to capture with a bishop.} e5 10. Be3 $5 exd4 11. Bxd4 Nxd4 12.
Qxd4 O-O $5 13. Qd2 Nd7 14. Nd5 $5 Nc5 15. Rb1 $6 a5 $1 {
Black has gained a positional edge.} 16. b3 c6 17. Ne3 Qf6 18. Ng4 Qg5 $1 19.
Qxd6 $5 Rfd8 20. Qg3 $2 ({Correct is} 20. h4 $1 Rxd6 21. hxg5 hxg5 {
and Black has  a plus.}) 20... Qd2+ $1 21. Kf1 Qxa2 22. Re1 Qxb3 {
Pleci has a lost game.} 23. Qf4 h5 24. Nh6+ Bxh6 25. Qxh6 Qc3 $5 26. Rg1 Qg7 $6
{Black should advance the a-pawn.} 27. Qe3 Ne6 $2 {
Villegas fails to decide the game.} ({Right is} 27... Qd4 $1) 28. f4 $1 Qh6 29.
f5 Qxe3 30. fxe3 Ng7 31. fxg6 fxg6 32. Rxg6 Re8 $5 33. Kf2 $5 Re5 $2 {
Pleci gets a fine chance.} (33... Rxe4 34. Reg1 Rf8+ 35. Bf3 {(Lachaga)} Rg4
36. R1xg4 hxg4 37. Rxg4 a4 {keeps an advantage.}) 34. Reg1 $1 Rf8+ 35. Bf3 Rf7
36. R1g5 Rxg5 37. Rxg5 b6 38. Rg6 Rc7 39. e5 $1 Kf7 $2 (39... b5 $1 40. cxb5
cxb5 41. Bd5+ Kf8 {gives survival chances.}) 40. Rf6+ Ke7 41. Bxc6 a4 42. Bxa4
Rc5 43. Rxb6 Rxe5 44. Bc2 Ne6 45. Kf3 Kf6 46. h4 Rc5 47. Bd3 Re5 48. Be4 Ke7
49. Bd5 Nc5 50. e4 Kd7 51. Rh6 Nd3 52. Ke3 Ne1 53. c5 Ng2+ 54. Kd4 Re7 55. Rxh5
Nf4 56. Rh6 Ne2+ 57. Kc4 Ng3 58. Ra6 Re5 59. Kd4 Rh5 60. c6+ {
Pleci won the game after great difficulties.} 1-0

[Event "Mar del Plata"]
[Site "3"]
[Date "1936.??.??"]
[Round "15"]
[White "Schwartzman, Aaron"]
[Black "Castillo Larenas, Mariano"]
[Result "1/2-1/2"]
[ECO "A48"]
[Annotator "JvR"]
[PlyCount "119"]
[EventDate "1936.03.??"]
[SourceDate "1999.07.01"]

{Schwarzman needs a win.} 1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. d4 O-O 5. Nbd2 $5
b6 6. g3 Bb7 7. Bg2 {Both players carry out a Double Réti.} d6 8. O-O Nbd7 9.
c4 a5 10. Qc2 e6 $5 {Black hesitates.} 11. e4 $1 Qe7 12. Ne1 e5 13. d5 Rae8 14.
Nd3 {White controls more territory.} Bc8 $5 15. a3 Nh5 16. b4 f5 17. c5 $6 (17.
exf5 $1 gxf5 18. f3 {gains an edge.}) 17... bxc5 18. bxc5 Ba6 19. c6 Ndf6 20.
Rfe1 f4 $6 ({Black misses the chance} 20... fxe4 21. Nxe4 Nxe4 22. Rxe4 Qf7)
21. Nc4 Bh6 22. Bc1 g5 $6 23. Nxa5 Ng4 $6 24. Nc4 Bg7 25. f3 Nxh2 $1 {
He accepts the consequence of his previous moves.} (25... Nh6 26. g4 Nf6 {
leads to passivity.}) 26. g4 $1 ({Not} 26. Kxh2 $2 fxg3+ 27. Kg1 g4 $1 {
and Black wins.}) 26... Nxg4 27. fxg4 Ng3 28. Bf3 Rf6 29. Nf2 Rh6 30. Kg2 Rf8
31. Bd2 Rh4 32. Nh1 $2 {Schwartzman blunders and spoils a won game.} (32. Rab1
h5 33. Rb4 {attacks on the queenside.}) 32... Qf6 $1 33. Nf2 $5 {
The planned capture on g3 looses quickly.} Qh6 34. Rh1 $1 Nxh1 35. Rxh1 Rxh1
36. Nxh1 Qf6 $6 (36... Ra8 $1 37. a4 Qh4 $1 {shows activity on both flanks.})
37. Nf2 Ra8 38. a4 Qd8 39. Be2 Qb8 40. Nd1 Qa7 41. Ndb2 Rf8 42. Be1 Bc8 43. Bf2
Qb8 44. Qd1 Kh8 45. a5 Bf6 46. Nb6 $1 cxb6 47. axb6 h5 $2 48. Qh1 $2 (48. c7 $1
Qa8 49. Qa4 {wins the game and shares the title.}) 48... Kg7 $1 49. Qd1 $5 ({
He notices} 49. Qxh5 $4 Rh8 {(Becker).}) 49... hxg4 50. Bxg4 Rh8 51. Nc4 Be7
52. Bf5 $6 Qa8 $5 53. b7 Bxb7 54. Nb6 Qa2 55. cxb7 Rh2+ $1 56. Kxh2 Qxf2+ 57.
Kh1 f3 58. Bh3 Qxb6 59. Qxf3 Qxb7 60. Bf5 {Equality has been achieved. The
final standings became: Pleci 111/2/15, Schwarzman 11, etc.} 1/2-1/2

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "1"]
[White "Najdorf, Miguel"]
[Black "Luckis, Marcos"]
[Result "0-1"]
[ECO "B72"]
[Annotator "JvR"]
[PlyCount "126"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{World War II broke out during the Olympiad Buenos Aires 1939. It was hard or
impossible to return home for many players. They hesitated. Seven of them
played a tournament with five Argentinians. It occurred at the Circulo de
Ajedrez from 2 until 19 x 1939.} 1. e4 c5 2. Ne2 Nc6 3. Nbc3 Nf6 4. d4 cxd4 5.
Nxd4 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2 O-O 9. h3 d5 10. Nxc6 $5 {
Usually, an exchange is made on d5.} bxc6 11. e5 Ne8 $1 {
Black attacks the advanced pawn.} 12. f4 f6 13. exf6 Bxf6 14. O-O Rb8 15. b3
Qc7 16. Bd4 $5 Bxd4+ 17. Qxd4 Qb6 18. Qxb6 axb6 {Equality has been achieved.}
19. g4 $5 Nc7 20. Kh2 Ba6 21. Rae1 Bxe2 22. Rxe2 e6 23. Na4 $5 Kf7 24. Nb2 Ke7
25. Kg3 Kd6 26. a4 b5 $1 27. Rfe1 $6 (27. a5 $6 b4 $1 {
threatens a pawn (Czerniak).}) ({Preferable is} 27. Ra1 $1 bxa4 28. Rxa4) 27...
bxa4 28. Nxa4 Rb4 29. Rf2 c5 30. Nc3 Ra8 31. Rd2 Kc6 $5 32. Re5 Rf8 33. Ne2 Kd6
34. Re3 h6 $1 35. h4 $6 ({Better is} 35. Rd1 Ra8 36. Nc3) 35... h5 $1 36. gxh5
gxh5 37. Re5 Ne8 $1 38. Rd1 ({The pointe is} 38. Rxh5 $2 Nf6 $1 39. Re5 Ne4+)
38... Ng7 39. Rg5 $6 (39. Ra1 $1 Nf5+ 40. Kh3 {defends well.}) 39... Nf5+ 40.
Kh3 $2 {The white position falls apart.} (40. Kf2 $1 c4 41. bxc4 Rxc4 42. c3 {
grabs the last opportunity.}) 40... Re4 $1 41. Rd2 Re3+ 42. Ng3 Nxg3 $5 {
Black could postpone the exchange.} 43. Rxg3 Re4 44. Rg5 Rexf4 45. Rxh5 Rf2 $1
{He is going to win a pawn in the rook ending.} 46. Rd3 $5 R8f3+ 47. Rxf3 Rxf3+
48. Kg4 Rc3 49. Rh8 Rxc2 50. h5 Ke5 51. h6 Rh2 52. Kg3 ({Or} 52. Kg5 Kd4 $1 53.
h7 e5 {and Black wins (Czerniak).}) 52... Rh1 53. h7 Kd4 54. Kg2 Rh6 55. Kg3 e5
56. Kg4 e4 57. Kg5 Rh3 58. Kg6 Rxb3 59. Ra8 Rh3 60. h8=Q+ Rxh8 61. Rxh8 e3 62.
Kf5 Kd3 63. Kf4 e2 {The tournament started with a big surprise.   Najdorf came
from Poland and stayed. His wife and daughter were killed. The Lithuanian
Luckis migrated as well.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "2"]
[White "Graf, Sonja"]
[Black "Grau, Roberto"]
[Result "1/2-1/2"]
[ECO "D02"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Bf4 e6 3. Nf3 Nf6 4. c3 Be7 5. Nbd2 O-O 6. e3 Nbd7 7. Bd3 c5 8. Ne5
$5 Nxe5 9. dxe5 Nd7 10. Qh5 {Graf likes to play enterprising chess.} f5 ({
The alternative will become} 10... g6 $5) 11. g4 g6 12. Qh3 c4 13. Bc2 Nc5 14.
Rd1 $5 ({Preferable is} 14. O-O-O Qa5 15. Kb1) 14... Qa5 $1 15. a3 Bd7 16. gxf5
exf5 17. Rg1 $6 ({Better is} 17. Nf3 Qb6 18. Rb1) 17... Ba4 $1 18. Bxf5 $1 Rxf5
19. Qxf5 Rf8 20. Rxg6+ $1 Kh8 $2 (20... hxg6 $1 21. Qxg6+ Kh8 22. Qh5+ Kg8 {
leads to perpetual check.}) 21. Rf6 $1 {Sonja makes an effort to win.} Bxf6 22.
exf6 Nd3+ 23. Ke2 $4 (23. Kf1 $1 Qa6 24. f7 Qg6 25. Be5+ Nxe5 26. Qxe5+ Qg7 27.
Qxg7+ Kxg7 28. Rc1 Rxf7 29. Ke2 {gains a pawn.}) 23... Nxf4+ $2 {
He exchanges an important attacker.} (23... Bxd1+ 24. Kxd1 Qa4+ 25. b3 $5 Qxa3
26. f7 $5 Qc1+ 27. Ke2 Qe1+ 28. Kf3 Qxf2+ 29. Kg4 Qg2+ 30. Bg3 Rxf7 $1 {
brings a black win (Czerniak).}) 24. Qxf4 Bxd1+ 25. Kxd1 Qd8 {
Black cannot develop a charge on the white king.} 26. f7 Kg7 27. Qd4+ Kxf7 28.
Qxa7 Qd7 29. Qd4 Kg8 30. f3 Qe6 31. h4 b5 32. Ke2 h5 33. Nf1 Qf5 34. Nd2 Rf6
35. Kf2 Rg6 36. e4 $1 dxe4 37. Nxe4 Qf4 38. Qd8+ Kg7 39. Qe7+ Kh6 40. Qd8 Kg7
41. Qd4+ Kg8 42. Qd8+ {White delivers a repetition of moves. Sonja Graf had
become second in the world championship for women in Buenos Aires. She could
not return to Germany. Eventually, she went to the United States.} 1/2-1/2

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "3"]
[White "Keres, Paul"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "D56"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{Keres and Guimard shared the lead by two wins. They met in round three.} 1. d4
Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7
9. Qc2 Nf6 10. cxd5 $5 exd5 11. Bd3 Nc6 $1 12. a3 Bg4 13. O-O Bxf3 14. gxf3 Nd8
$1 15. b4 Ne6 {Black has achieved equality.} 16. Kh1 c6 17. Na4 Ng5 18. Be2 Ne8
19. Rg1 Nd6 20. Rg2 Kh8 21. Rag1 Rg8 22. Nc5 a5 $1 23. bxa5 $1 Rxa5 24. a4 Ra7
$5 25. Bd1 $5 Nc4 $1 26. Qf5 $5 {Keres takes the initiative.} (26. f4 Ne4 27.
Nxe4 Qxe4 {leads to exchanges.}) 26... g6 $1 27. Qg4 b6 28. Nd3 Qe6 29. Qg3 $5
{He keeps the queens on the board.} Nh3 30. Re1 Ng5 31. e4 $5 {
Paul wants to win.} Qf6 ({The pointe is} 31... dxe4 32. fxe4 Nxe4 $2 {
(Czerniak)} 33. Qf4 $1 f5 34. Bb3 $1 g5 35. Qc1 b5 36. f3 {
and White wins a piece.}) 32. e5 $5 Qf5 $2 {
Guimard collapses at the end of the game. His queen becomes vulnerable.} ({
Correct is} 32... Qe7 33. Nf4 Ne6 34. Nxe6 Qxe6) 33. f4 Ne4 34. Qh4 {
He threatens mate in one.} g5 $2 (34... Kh7 35. Bg4 {(Czerniak)} Nxf2+ 36. Nxf2
Qxf4 37. Qf6 Qxf6 38. exf6 Nd6 {offers more resistance.}) 35. Qxh6+ Qh7 36.
Qxc6 Nc3 37. Qf6+ Qg7 38. Rg3 $1 {Keres took the sole lead. He would return to
his family in Estonia after the tournament.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "4"]
[White "Grau, Roberto"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E69"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. g3 d6 6. Bg2 Nbd7 7. O-O e5 8. e4
Re8 9. dxe5 dxe5 10. h3 c6 $5 {Najdorf likes the King's Indian Defence.} 11.
Be3 Qe7 12. Qc2 Nh5 $5 13. Rfd1 Nf8 14. c5 f5 15. exf5 gxf5 16. Rd6 $5 {
The solid Grau chooses for opportunism.} Ng6 $5 17. Bg5 $5 Qf7 18. Rad1 Be6 19.
Bc1 $5 h6 $1 {Black controls g5.} 20. b4 $6 ({Better is} 20. Re1 $1) 20... Nf6
21. Nh2 $6 ({Preferable is} 21. Bb2 $1 Bf8 22. R6d2 a5 23. b5 $5) 21... e4 $1
22. Bb2 $5 Ne5 $1 23. Bf1 Bc4 $1 24. Nxe4 $1 Nxe4 25. Bxe5 Nxd6 26. Bxd6 $2 {
Grau loses his way in the complications.} (26. Bxg7 $1 Bxf1 27. Nxf1 Qc4 28.
Qxc4+ Nxc4 29. Bxh6 {brings white counter-play.}) 26... Bxa2 27. Rc1 Bd5 28.
Bc4 Bxc4 29. Qxc4 Qxc4 30. Rxc4 Re4 {
Black has a decisive material advantage in the endgame.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "4"]
[White "Guimard, Carlos"]
[Black "Gershman, J."]
[Result "1-0"]
[ECO "A47"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. d4 e6 3. e3 c5 4. Bd3 b6 5. O-O Bb7 6. b3 Nc6 $5 7. a3 Be7 8. Bb2
cxd4 9. exd4 d5 10. Ne5 Nxe5 11. dxe5 Ne4 $6 ({More solid is} 11... Nd7) 12. b4
f5 ({Black avoids} 12... O-O $6 13. f3 Ng5 14. h4) 13. Bb5+ Kf8 14. f3 Ng5 15.
Nd2 a6 16. Bd3 Qe8 $6 (16... g6 $1 17. Nb3 Kg7 {
brings the king in a safe position.}) 17. Nb3 $1 Qg6 $6 18. Qd2 h5 19. Bd4 $1 {
White attacks on the queenside.} Bd8 20. Kh1 $5 h4 21. h3 Kg8 22. Qf2 Rc8 $2 (
22... Bc7 $1 23. Rfe1 Nf7 24. f4 Rb8 $1 {
avoids the loss of a pawn. The pointe is} 25. Bxb6 $2 Bxb6 26. Qxb6 d4 $1 {
and Black wins.}) 23. Bxb6 Ne4 24. fxe4 dxe4 25. Bxd8 exd3 26. Nc5 $1 Bd5 27.
Be7 dxc2 28. Rac1 Re8 29. Bd6 f4 30. Qxc2 Qg5 31. Ne4 Qf5 32. Nf2 f3 33. Rfd1
fxg2+ 34. Kg1 Qf4 35. Qg6 Rd8 36. Rc7 Qh6 37. Qf7+ 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "4"]
[White "Luckis, Marcos"]
[Black "Keres, Paul"]
[Result "0-1"]
[ECO "C58"]
[Annotator "JvR"]
[PlyCount "48"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. d3 {
This old line of the Two Knights brings no advantage for White.} h6 7. Nf3 e4
8. Qe2 Nxc4 9. dxc4 Bc5 10. Nfd2 O-O 11. Nb3 Bg4 12. Qf1 Bb4+ 13. Nc3 $5 ({
Theory is} 13. c3 {(Salwe - Marshall, Wien 1908).}) 13... c6 $1 14. h3 ({Not} 
14. dxc6 $4 Qd1#) 14... Bh5 15. g4 Bg6 16. dxc6 bxc6 17. Bd2 $2 {
He allows a sharp attack.} ({More useful is} 17. Qe2) 17... e3 $1 18. fxe3 (18.
Bxe3 $6 Ne4 19. a3 Bxc3+ 20. bxc3 Nxc3 {favours Black even more.}) 18... Bxc3
19. bxc3 $2 {White makes a terrible positional mistake.} (19. Bxc3 Ne4 20. Qf4
Qh4+ 21. Kd1 Nxc3+ 22. bxc3 {offers more resistance.}) 19... Bxc2 20. Nd4 Ne4
21. h4 ({Or} 21. Rg1 Bd3 $1 22. Qxd3 Qh4+ 23. Kd1 Nf2+ {(Czerniak).}) 21... c5
22. Nf3 Ng3 23. Qg2 Nxh1 24. Qxh1 Be4 {Keres had won his fourth game.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "5"]
[White "Najdorf, Miguel"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "A51"]
[Annotator "JvR"]
[PlyCount "157"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{Czerniak had emigrated from Poland to Palestine. He was not allowed to return
to Palestine from Buenos Aires. After Israel was founded, he settled in this
state.} 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 {
Black wants to attack in the Fajarowicz Variation.} 4. Nd2 Bb4 ({
A solid alternative brings} 4... Nc5 {(Hermann - Fajarowicz 1930).}) 5. Ngf3
Nc6 6. g3 d6 7. exd6 Qxd6 8. a3 Qc5 9. e3 Bxd2+ 10. Nxd2 Nxd2 (10... Bf5 $1 {
drew in Opocensky - Richter, Bad Nauheim 1935.}) 11. Bxd2 Be6 12. Qc2 $5 (12.
Qa4 {was played in Stahlberg - Richter, Sopot 1935.}) (12. Bc3 $1 {
gains an edge.}) 12... Bf5 $2 ({Preferable is} 12... Ne5 $1) 13. Bd3 Bxd3 14.
Qxd3 Ne5 $6 15. Qe4 O-O-O 16. Bb4 $1 Nd3+ 17. Qxd3 $1 Qxb4+ 18. axb4 Rxd3 19.
Rxa7 {Najdorf achieves a big advantage.} Rhd8 20. Ra8+ Kd7 21. Rxd8+ Kxd8 22.
Ke2 Rb3 23. Rd1+ Ke7 24. Rd2 Rxb4 25. Kd3 {
White has an extra pawn in the rook ending.} Ra4 26. Kd4 Ra1 27. e4 Re1 28. b4
Kd6 29. f3 f6 30. f4 b6 31. c5+ $5 {It is difficult for White to make progress.
} bxc5+ 32. bxc5+ Kc6 33. Rc2 $5 {
The advance of the e-pawn does not guarantee success.} Rd1+ 34. Ke3 Re1+ 35.
Kf3 Rb1 36. Rd2 $1 Rc1 $6 ({Better is} 36... Rb8) 37. e5 $6 (37. Rd8 $1 Rxc5
38. Rg8 g6 39. Rg7 {takes advantage of the slip.}) 37... fxe5 38. fxe5 Rxc5 39.
Ke4 Rc1 40. Kf5 Rf1+ 41. Ke6 Re1 42. g4 h6 43. h4 $1 Rg1 44. Rc2+ Kb6 45. Kd7
Rd1+ 46. Ke7 Rd4 47. e6 c5 48. Re2 Kc7 49. g5 $5 Rxh4 50. g6 $2 (50. Kf7 hxg5
51. e7 Rh8 52. e8=Q Rxe8 53. Rxe8 {wins for White (Czerniak).}) 50... Rf4 $1
51. Ke8 Rf6 52. e7 Rf5 53. Re4 h5 54. Re6 $1 h4 $1 55. Re4 h3 56. Rh4 Rf3 57.
Rh5 Kc6 (57... Kd6 $1 58. Re5 $1 h2 {draws.}) 58. Rh7 $1 c4 59. Rxg7 c3 60. Rh7
(60. Rf7 $1 h2 61. Kf8 Rxf7+ 62. gxf7 h1=Q 63. e8=Q+ Kc5 $1 {
leads to a theoretical draw.}) 60... c2 61. g7 c1=Q $2 (61... Rg3 $1 62. Rxh3
Rxg7 63. Rc3+ Kd6 {draws (Czerniak).}) 62. g8=Q Kc7 63. Qd5 Qc6+ 64. Qxc6+ Kxc6
65. Kd8 Rd3+ 66. Kc8 Re3 67. Kd8 Rd3+ 68. Kc8 Re3 69. Rh6+ $1 Kc5 70. Kd7 Rd3+
71. Kc7 Re3 72. Kd8 Rd3+ 73. Kc7 Re3 74. Kd7 $2 ({
White misses the Lasker manouevre} 74. Rh5+ $1 Kc4 75. Kd6 Rd3+ 76. Kc6 Re3 77.
Rh4+ Kc3 78. Rxh3 $1 Rxh3 79. e8=Q) 74... Rd3+ 75. Ke6 Re3+ 76. Kf7 Rf3+ 77.
Ke8 Re3 $2 {Black misses a remarkable draw.} (77... Ra3 $1 78. Kf7 Rf3+ 79. Ke6
Re3+ 80. Kd7 Rd3+ {brings a threefold repetition of positions.}) 78. Rh7 Rf3 ({
A wonderful alternative gives} 78... Ra3 $1 79. Kd7 Rd3+ 80. Kc7 Re3 81. Rh5+
Kb4 82. Kd7 Rd3+ 83. Kc6 Re3 84. Rh4+ Ka5 85. Kd6 Rd3+ 86. Kc5 Re3 87. Rxh3 $1
Rxe7 88. Ra3# {(Czerniak).}) 79. Rh8 {
Keres led by one point on Najdorf, Czerniak and Stahlberg.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "6"]
[White "Czerniak, Moshe"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "A45"]
[Annotator "JvR"]
[PlyCount "147"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nd2 d5 3. e3 c5 4. c3 Qc7 5. Ngf3 Nbd7 6. Qa4 {
He plays an idea by Colle.} g6 7. Bd3 $5 Bg7 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4
cxd4 11. cxd4 O-O 12. O-O Nf6 13. Re1 $6 ({Preferable is} 13. Bd3) 13... Bd7
14. Qb4 Nxe4 15. Rxe4 e6 16. Bf4 Qb6 17. Qxb6 axb6 {
Guimard has advantages in the endgame.} 18. Re3 $5 Bc6 19. Bd6 $5 Rfc8 20. Ne5
Bd5 21. a3 Rc2 $1 22. Rc3 $1 Rc8 $6 (22... Rxb2 23. Rc7 f6 24. Nd7 Re8 {
gains an edge.}) 23. Bb4 f6 $5 24. Ng4 Rc6 $6 {
More solid is an exchange of rook c2.} 25. Rxc2 $1 Rxc2 26. Bc3 {
The black rook has been imprisoned.} Re2 27. Ne3 Be4 28. Nc4 b5 29. Nd6 Bc6 30.
Kf1 Rc2 31. Re1 Bf8 $5 32. Rxe6 $1 Rc1+ 33. Ke2 Bd7 $2 {
Black will lose material.} (33... Kg7 $1 34. Kd2 Rf1 35. Ke2 Rc1 {
leads to a repetition of moves.}) 34. Rxf6 Be7 35. Ne4 $1 Bf5 $1 36. Rb6 Bxe4
37. Re6 Rc2+ 38. Ke1 Bxg2 ({The alternative is} 38... Rc1+ $5 39. Ke2 Rc2+ 40.
Ke3 Bxa3 $1 41. Rxe4 Bxb2) 39. Rxe7 Bf3 40. Re5 h5 41. Rxb5 Re2+ 42. Kf1 Rc2
43. Re5 Rc1+ 44. Re1 Rxe1+ 45. Kxe1 {White has two extra pawns in the endgame
of bishops of the opposite colour. Black has drawing chances.} Kf7 46. Kd2 Ke6
47. Ke3 Bd1 48. Ba5 Kd5 49. h4 Bc2 50. Kd2 Be4 51. Kc3 Kc6 52. Bd8 Kb5 $5 53.
b3 Bf3 54. a4+ Kc6 55. Kd2 Bd5 56. b4 Bb3 57. a5 {
He wants to create a second passed pawn on the queenside.} Kd5 58. Ke3 Bc4 59.
Bb6 Bb5 60. Kf4 Ke6 61. Kg5 Bd3 62. Bc5 Kd5 63. Kf6 Kc6 ({The alternative is} 
63... Be4 64. f4 Kc4 65. Ke5 Bh1 66. Be7 Bc6 67. Kf6 Be4 68. Bc5 $1 {(zugzwang)
} Kd5 69. b5 $1 Kc4 70. a6 $1 b6 71. Be7 Kxb5 72. a7 Ka6 73. a8=Q+ $1 Bxa8 74.
Kxg6 {and White wins.}) 64. Ke5 Bc4 65. f4 Bb3 66. Bf8 Bc4 67. d5+ $1 Kd7 ({
The pointe is} 67... Bxd5 68. b5+ $1) 68. Kd4 Bb3 69. b5 Bd1 70. a6 bxa6 71.
bxa6 Kc7 72. Kc5 Bg4 73. Bd6+ Kc8 74. Kc6 {Keres led by one point on Czerniak.}
1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "6"]
[White "Grau, Roberto"]
[Black "Palau, Luis"]
[Result "1-0"]
[ECO "D53"]
[Annotator "JvR"]
[PlyCount "141"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Nbd7 5. Bg5 Be7 6. e3 h6 7. Bh4 Ne4 $5 {
Black makes a move similar to the Lasker Defence.} ({Usual is} 7... O-O) 8.
Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 c6 12. c4 Nf6 13. Ne5 O-O 14. Bd3
Be6 15. O-O dxc4 $6 (15... c5 $1 16. Rac1 cxd4 17. exd4 dxc4 18. Bxc4 Bxc4 19.
Qxc4 Rfe8 {equalises.}) 16. Bxc4 Bxc4 17. Qxc4 Rfd8 18. Rab1 Rab8 19. Rfc1 Nd7
20. Nd3 Qh4 $5 21. a4 Nf6 $5 22. Ne5 $5 Rd5 $2 23. Qe2 $2 (23. Nxc6 $1 Ng4 {
(Czerniak)} 24. Qxd5 {wins material.}) 23... Nd7 24. Nxd7 Rxd7 25. Rxc6 Re8 $1
26. Rc2 Rxd4 27. Qb5 $1 Rdd8 28. Rc7 $1 a6 29. Qf5 $1 Re7 30. g3 Qe4 31. Qxe4
Rxe4 32. Rbxb7 Rf8 $1 33. Ra7 Rxa4 34. Rc6 a5 35. Rca6 Rb8 $2 (35... h5 $1 36.
Rxa5 Rxa5 37. Rxa5 g6 {
draws in the rook ending of four against three pawns on one flank.}) 36. Rxa5
Rxa5 37. Rxa5 Rb7 38. Kg2 Kf8 39. Re5 g6 40. g4 $1 {
Grau achieves winning chances by the prevention of ..h5.} Kg7 41. h4 Kf6 42.
Ra5 Rc7 43. f4 Rb7 44. Kf3 Rc7 45. h5 $1 {The attack begins.} Rc6 46. hxg6 Kxg6
$1 ({No good is} 46... fxg6 $2 47. Ra7 g5 48. f5 {(Czerniak).}) 47. Ra8 Rb6 48.
Rd8 Ra6 49. f5+ Kg5 50. Rd7 Kf6 51. Kf4 $1 Ra1 52. Rd6+ Kg7 53. e4 Rf1+ $5 54.
Ke5 $1 Rg1 $2 {White misses the opportunity.} (54... Ra1 55. Rd7 Ra5+ 56. Kf4
Ra4 {defends well.}) 55. Rd8 $2 {White misses the opportunity.} (55. f6+ $1 Kg6
56. Rd8 Rxg4 57. Rg8+ {leads to a won ending.}) 55... Rxg4 56. f6+ Kh7 $1 57.
Rf8 Rg5+ 58. Kd6 Kg6 $2 {Palau makes the final mistake.} (58... Ra5 $1 59.
Rxf7+ Kg6 60. Rf8 Ra6+ 61. Ke5 Ra5+ 62. Kf4 Ra4 {brings no white win.}) 59. e5
$1 Rh5 60. Rg8+ Kf5 61. e6 $1 Kxf6 62. e7 $1 Re5 63. e8=Q Rxe8 64. Rxe8 h5 65.
Rh8 Kg5 66. Ke5 Kg4 67. Ke4 h4 68. Rg8+ Kh3 69. Kf3 Kh2 70. Rh8 h3 71. Kf2 {
Guimard and Grau were the strongest Argentine players.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "7"]
[White "Benko, Francisco"]
[Black "Frydman, Paulino"]
[Result "0-1"]
[ECO "B83"]
[Annotator "JvR"]
[PlyCount "48"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{Frydman came from Poland and stayed in Argentina.} 1. e4 c5 2. Nf3 Nc6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e6 7. Be3 Be7 8. O-O a6 9. a4 Bd7 $5 10. Nb3
Na5 11. Nd2 Rc8 12. b4 $2 (12. f4 O-O 13. Qe1 {
preparers an attack on the kingside.}) 12... Rxc3 $1 13. bxa5 Qc8 $5 (13... O-O
$1 {gains a positional advantage.}) 14. Bd3 e5 15. Qe2 Be6 16. f4 $5 d5 $5 17.
Kh1 $4 (17. fxe5 Nxe4 18. Qf3 {equalises.}) 17... dxe4 18. Bxe4 ({Or} 18. Nxe4
Nxe4 19. Bxe4 f5 $1 {(Czerniak).}) 18... Nxe4 19. Nxe4 Rxc2 20. Qh5 $5 Qc6 21.
Qxe5 f6 $1 {Frydman plays the final assault elegantly.} 22. Qb8+ Kf7 $1 23.
Qxh8 Qxe4 24. Rf2 Rc8 $1 {Black gains material.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "7"]
[White "Stahlberg, Gideon"]
[Black "Czerniak, Moshe"]
[Result "0-1"]
[ECO "A09"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{Stahlberg came from Sweden. He played chess and bridge in Argentina. Gideon
returned to Sweden in 1948.} 1. Nf3 d5 2. c4 d4 3. e3 c5 4. b4 g6 5. Bb2 Bg7 6.
exd4 $5 (6. bxc5 $1 e5 7. exd4 exd4 8. d3 {
happened in Tarrasch - Alekhine, Semmering 1926.}) 6... cxd4 7. d3 e5 8. Nbd2
Ne7 9. g3 O-O 10. Bg2 Qc7 11. O-O Nbc6 $5 12. b5 $1 Nd8 13. Re1 Ne6 14. Ba3 $1
f6 15. Nb3 Rd8 16. Rc1 Bf8 17. Nfd2 a6 18. Ne4 Kg7 19. Qe2 axb5 20. cxb5 Qb6 $2
{Czerniak misses 'a petite combinaison'.} ({Correct is} 20... Qb8 $1) 21. Nxf6
$1 Kxf6 ({Or} 21... Rxa3 $2 22. Qxe5 Kf7 23. Nxh7 {(Czerniak).}) 22. Qxe5+ Kf7
23. Bxe7 Bxe7 24. Bd5 $2 (24. Bh3 $1 Qd6 25. Rxc8 $1 Qxe5 26. Rxe5 Raxc8 27.
Bxe6+ {(Czerniak)} Kf6 28. Bxc8 Kxe5 29. Bxb7 {gains a big advantage.}) 24...
Qd6 $1 25. Rxc8 Qxe5 26. Rxe5 Rxd5 $1 27. Rxd5 Rxc8 28. Nxd4 Rc5 29. Rxc5 Nxc5
30. Kf1 Nxd3 {Black has won a bishop  for two pawns.} 31. a4 b6 $5 32. Nc6 Ke6
33. a5 $1 bxa5 34. Nxa5 Bc5 35. f4 Kd5 36. Ke2 Bb6 $2 37. Kxd3 $1 Bxa5 {
White can achieve a draw by pawn exchanges.} 38. Ke3 Ke6 39. Ke4 Bb6 40. g4 Bd8
41. f5+ Kd6 42. fxg6 hxg6 43. b6 $2 (43. Kf4 g5+ 44. Kf3 Kd5 45. h4 $1 {
leads to a theoretical draw (Czerniak).}) 43... Bh4 $1 {
The standings became: Keres 6/7, Czerniak 51/2, Najdorf 5, etc.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "8"]
[White "Najdorf, Miguel"]
[Black "Keres, Paul"]
[Result "1-0"]
[ECO "D94"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{Najdorf trailed by one point on Keres.} 1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nf3 g6
5. Bd3 Bg7 6. O-O O-O 7. Nc3 dxc4 8. Bxc4 Nbd7 9. Qe2 $5 Ne8 $5 {
Keres makes a withdrawal as a preparation of ..e5.} 10. Bb3 $1 e5 11. Nxe5 Nxe5
12. dxe5 Bxe5 13. f4 Bg7 14. e4 $1 Be6 15. Bxe6 fxe6 16. e5 Nc7 {
White controls more territory.} 17. Be3 Nd5 18. Ne4 b6 $5 19. Rad1 Qe7 20. g3
Rad8 21. a3 Nc7 $6 ({Better is} 21... c5 $1 22. Nd6 Qd7) 22. Rd6 $1 c5 $2 {
Keres allows decisive tactics.} (22... Qe8 $1 23. Bf2 Rxd6 24. exd6 Nd5 25. Ng5
Bf6 26. Re1 {favours White.}) 23. f5 $1 {He opens the road to g5.} exf5 (23...
Bxe5 24. Bg5 Bxd6 25. Bxe7 Bxe7 26. f6 Bd6 27. Ng5 {
also brings a winning advantage (Czerniak).}) 24. Bg5 $1 Qxe5 25. Bxd8 Ne6 $1
26. Bf6 $3 {Najdorf had equalised with his strongest opponent.} (26. Bf6 Bxf6
27. Nxf6+ Qxf6 28. Qxe6+ {wins a rook (Najdorf).}) 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "8"]
[White "Stahlberg, Gideon"]
[Black "Palau, Luis"]
[Result "1-0"]
[ECO "A13"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 c5 $5 ({Usual is} 
6... Bc6) 7. Ne5 Qc7 8. d4 Nc6 9. Nxd7 Nxd7 10. dxc5 Bxc5 11. O-O Nd4 12. e3
Nc6 13. Nc3 O-O 14. Rd1 Nce5 15. Qe2 Nf6 16. Bd2 Rad8 17. Ne4 Be7 $5 ({
Preferable is} 17... Nxe4 18. Bxe4 f5) 18. Rac1 Qb8 19. Nc5 $5 (19. Nxf6+ $1
Bxf6 20. Bc3 {gains an edge.}) 19... Bxc5 20. Rxc5 Nd3 $6 (20... Qd6 {
should be played immediately.}) 21. Rc2 Qd6 22. Bf3 $6 (22. Bxb7 {grabs a pawn.
}) 22... Nb4 23. Rcc1 Qb6 24. Bxb4 Qxb4 25. Rxd8 Rxd8 26. Rc7 Qa5 27. Qc4 $5 h6
28. b4 Qf5 $2 29. Kg2 $2 (29. Rc8 $1 Rxc8 30. Qxc8+ Kh7 31. Qxb7 {wins a pawn.}
) 29... Rd2 30. Rxb7 g5 $2 ({Correct is} 30... Rc2 $1 31. Qf4 Qxf4 32. gxf4
Rxa2 {and equality.}) 31. e4 Qe5 32. h3 $1 {White prevents ..g4.} h5 $2 33. Rb5
{He grabs more material.} Qb2 34. Rxg5+ Kh7 35. Qc5 e5 36. Rf5 Kg6 37. Qe3 Nh7
38. Bxh5+ Kg7 39. Rxf7+ Kg8 40. Qh6 {
Czerniak led half-a-point on Keres and Najdorf.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "9"]
[White "Keres, Paul"]
[Black "Stahlberg, Gideon"]
[Result "1/2-1/2"]
[ECO "C07"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qc5 7. O-O $5 {
This ambitious move was a novelty in those days.} Nf6 8. Qe2 Nc6 9. Nb3 Qb6 10.
Rd1 Bc5 $2 {The bishop makes one step too far.} 11. a4 $1 a5 $6 12. Nxc5 Qxc5
13. b3 {Keres has achieved a positional advantage.} Nd5 14. Ba3 $1 Ndb4 15. Bb2
O-O 16. Nxd4 Nxd4 17. Rxd4 $1 {
White has recovered the pawn and starts an attack on the hostile king.} Qf5 $1
18. Rg4 g6 $6 {Black opens a long diagonal.} 19. Rc1 $5 (19. Re4 $1 {
wins quickly.}) 19... Bd7 20. Re4 Bc6 $5 (20... Rfe8 21. Qe3 Bc6 22. Qh6 {
is hopeless too.}) 21. Rxe6 $1 Qg5 22. f4 $1 {
Keres shows his strength as attacker.} Qc5+ $5 ({The pointe is} 22... Qxf4 $2
23. Rf1 $1) 23. Kh1 $5 Rae8 {Capture of the rook leads to mate.} 24. Re5 Nd5 $2
{Black should exchange the rooks.} 25. Re1 $5 f6 26. Re7 $5 (26. Ba3 $1 Qxa3
27. Bxd5+ Kh8 28. Bxc6 Rxe5 29. fxe5 bxc6 30. e6 {wins easily.}) 26... Rxe7 27.
Qxe7 Qxe7 28. Rxe7 Rd8 $5 29. Bxf6 $1 Kf8 30. Rf7+ $1 ({Elementary is} 30. Rxh7
$4 Nxf6 31. Rf7+ Ke8 32. Rxf6 Rd1+ {(Czerniak).}) 30... Kxf7 31. Bxd8 Ke8 32.
Bxa5 Ne3 $1 {Stahlberg begins a counteraction.} 33. Bb5 Bxb5 34. axb5 Nxc2 35.
Bc3 Ne3 36. Kg1 Kd7 37. Be5 Ke6 38. h3 Kd5 39. Kf2 Ke4 40. Bc7 $2 (40. Bb8 $1 {
keeps winning chances by the material advantage.}) 40... Nd5 41. b6 Nxf4 {
Stahlberg defended cold-bloodedly. Czerniak was defeated by tailender Palau
and Najdorf won. Suddenly Najdorf led, half-a-point on Keres and Czerniak.
Najdorf and Keres became the only winners in the penultimate round.} 1/2-1/2

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "11"]
[White "Guimard, Carlos"]
[Black "Najdorf, Miguel"]
[Result "1/2-1/2"]
[ECO "D94"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{Najdorf had a small lead on Keres, when the last round began.} 1. d4 Nf6 2. c4
c6 3. Nf3 d5 4. e3 g6 5. Nc3 Bg7 6. Bd3 O-O 7. O-O e6 8. Qe2 $5 Nbd7 9. Rd1 Qc7
10. h3 e5 11. cxd5 Nxd5 12. Bc4 N5b6 13. Bb3 exd4 14. exd4 Nf6 15. Qe5 Nfd5 16.
Qxc7 Nxc7 17. Bf4 Ncd5 18. Nxd5 Nxd5 19. Bxd5 cxd5 {
Black cannot play for a win.} 20. Rac1 Bd7 21. Rc7 Bc6 22. Ne5 Bxe5 23. Bxe5 f6
24. Bd6 Rfc8 25. Re7 Re8 26. Rde1 Rxe7 27. Rxe7 Re8 28. Rxe8+ Bxe8 29. Bc5 a6
30. Kf1 Kf7 31. Ke2 Bb5+ 32. Ke3 Bf1 33. Kf3 {
Keres could be able to catch up with Najdorf.} 1/2-1/2

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1939.??.??"]
[Round "11"]
[White "Keres, Paul"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "B13"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1939.10.??"]
[SourceDate "1999.07.01"]

{Keres had to beat Czerniak in the last round.} 1. e4 c6 2. d4 d5 3. exd5 cxd5
4. c4 Nf6 5. Nc3 Nc6 6. Bg5 Qa5 $5 ({Usual is} 6... dxc4) 7. Qd2 dxc4 8. Bxc4
e5 $5 9. d5 Nd4 $1 10. f4 $5 Bd6 11. Nge2 Nf5 12. Bb5+ Bd7 $2 ({Preferable is} 
12... Kf8 $1) 13. Bxf6 gxf6 14. Bxd7+ Kxd7 {The king will become vulnerable.}
15. O-O Ne3 $1 {But Czerniak starts a counteraction first.} 16. Rf3 $1 Ng4 17.
Qd3 Rag8 (17... Qb6+ $5 18. Kh1 Nf2+ $2 19. Rxf2 {Is refuted by} Qxf2 20. Qb5+
Kc7 21. Ne4 {(Czerniak).}) 18. Kh1 $1 Qb6 19. Raf1 Kc8 20. h3 h5 $1 21. Ne4 $5
Kb8 22. Qb3 $1 Qa6 {Black avoids a lost endgame.} 23. N2g3 exf4 24. Nf5 Ne3 $1
{Czerniak prolongs the game.} 25. Nxe3 fxe3 26. Qxe3 Be5 $6 27. Nxf6 Bxf6 28.
Rxf6 Qxa2 29. Qe5+ Ka8 30. Rxf7 Qc4 31. b3 $1 Qc2 ({The pointe is} 31... Qxb3
$2 32. Qxh8 $1) 32. R1f2 Qc5 33. Qe7 (33. b4 $1 {repeats a trick.}) 33... Qxe7
34. Rxe7 Rd8 35. Rf5 h4 36. Kg1 Rc8 $6 {
He disorganizes the defence against the passed pawn.} 37. d6 Rc1+ $2 38. Kh2
Rd1 39. d7 $1 Rd8 40. Re8 $1 R1xd7 41. Rff8 {The final standings became:
Najdorf and Keres 81/2/11, Stahlberg and Czerniak 7, Frydman and Guimard 61/2,
Grau 51/2, Luckis 5, Gerschman and Benko 31/2, Graf 21/2, Palau 2.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "1"]
[White "Guimard, Carlos"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "D57"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Argentina had become one of the strongest chess nations of the world. The new
citizens did not want to become shoeshine boys but longed for chess. Mar del
Plata had organised international events before. The tournament committee
brought together fourteen immigrants and four Argentinians from 15 until 31
iii 1941. President of the organisation was Don Roberto Grau. Money was
supplied by the casino and other organisations. The tournament hall was in the
casino. It started a tradition of annual classical tournaments until 1962.  
Six refugees were introduced in Buenos Aires 1939 (Circulo).  Eight will be
presented during this event. Eliskases came from Austria. He would become an
important player from Argentina.} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5.
Bg5 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Qd6
12. c4 dxc4 13. Bxc4 Nc6 14. Qc3 Bg4 15. Nd2 Rad8 16. O-O Ne7 {
Eliskases plays his favourite variation.} 17. Rfc1 b6 $5 (17... c5 {
occurred in Grau - Eliskases, Buenos Aires 1939.}) 18. Ne4 Qd7 19. Ng3 c6 20.
Qa3 Ra8 $5 21. h3 Be6 22. Be2 Rac8 23. Nh5 Ng6 24. Qb2 f5 25. a4 f4 $6 26. Bd3
$6 (26. d5 $1 Bxd5 27. Bg4 {gains material.}) 26... Bf5 27. e4 $2 {
White blocks his attack on g6.} Bxh3 $1 28. f3 ({The pointe is} 28. gxh3 Qxh3)
28... Qe7 $2 {Eliskases misses a fine win.} (28... Nh4 $1 29. gxh3 Qxh3 30.
Qb3+ Kh8 31. Bf1 Qxf3 32. Qxf3 Nxf3+ 33. Kf2 Nxd4 {gets four pawns for a piece.
}) 29. a5 $5 Nh4 30. axb6 axb6 31. gxh3 Qg5+ 32. Kh1 Qxh5 33. Be2 Kh8 34. Ra3
Rf6 $1 {Black threatens ..Rg6.} 35. Rg1 Nf5 $5 36. Kh2 Ne3 $5 37. Ra7 $2 {
Guimard does not see the draw.} (37. Qxb6 $1 Rg6 38. Ra5 Qh4 39. Rxg6 Qf2+ 40.
Kh1 Qxe2 41. Qb7 Qf1+ 42. Kh2 Qf2+ {leads to perpetual check.}) 37... Rg6 $1
38. Qa1 Rg5 39. d5 $2 (39. Rxg5 Qxg5 40. Qg1 Rd8 {prolongs the game.}) 39...
Qxh3+ $1 {Eliskases delivers mate on the next move.} 0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "2"]
[White "Raud, Ilmar"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A30"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Ilmar Raud came from Estonia. His participation in this event would not
become successful. He suffered from hunger and died of pneunomia on 13 vii
1941 at the age of 28.} 1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 O-O 5. e3 c5 6.
Nc3 Nc6 7. d4 $5 cxd4 8. Nxd4 Qa5 9. Rc1 $6 Nxd4 $1 10. exd4 Bh6 $5 11. Rc2 d5
12. c5 $5 e5 $5 {Najdorf makes an aggressive move.} 13. a3 $2 {
Raud gives a passive answer.} (13. dxe5 $1 d4 $5 14. Qxd4 Bf5 15. b4 Qd8 16.
Qxd8 Raxd8 {brings equality.}) 13... Bf5 $1 14. Re2 exd4 $5 (14... Ne4 $1 15.
b4 Nxc3 16. Qb3 Qa4 17. Qxc3 e4 {also keeps an edge.}) 15. b4 $1 Qd8 16. Qxd4
Bg7 17. Nb5 b6 $1 18. cxb6 axb6 19. Qh4 Re8 20. Kd1 $6 {
White makes a strange error.} ({Better is} 20. Nd4) 20... Rxe2 21. Bxe2 d4 $1 {
Najdorf attacks brilliantly.} 22. Qxd4 Ng4 $1 23. Qxd8+ {
White cannot capture on g7!} Rxd8+ 24. Ke1 Bxb2 25. f3 Ne3 26. Kf2 Nc2 27. g4
Be6 28. a4 Rd2 29. Rb1 Be5 30. Kf1 Ba2 31. Rc1 Bb2 32. Rd1 Ne3+ 33. Ke1 Rxd1+
34. Bxd1 Nxd1 {Miguel triumphed.} 0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "3"]
[White "Graf, Sonja"]
[Black "Michel, Paul"]
[Result "0-1"]
[ECO "D02"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Michel came from Germany and stayed in Argentina.} 1. d4 d5 2. Bf4 c5 3. c3
Nc6 4. e3 e6 5. Nf3 Nf6 6. Nbd2 Bd6 7. Bg5 {Graf loses a tempo.} O-O $5 8. Bd3
Re8 9. Qc2 h6 10. Bh4 e5 $1 {Black takes the initiative.} 11. dxe5 Nxe5 12.
Nxe5 Bxe5 13. O-O-O Qa5 14. f4 Bd6 $5 15. Bxf6 gxf6 16. Bh7+ $5 Kg7 {
A spectacular position has been reached.} 17. Nb3 $2 ({Right is} 17. Kb1 $1)
17... Qxa2 18. Kd2 $2 (18. Rxd5 {offers a serious resistance.}) 18... Qa4 $1
19. Ra1 Qxf4 $1 20. Rae1 ({The pointe is} 20. exf4 Bxf4+ 21. Kd1 Bg4+) 20...
Qg5 21. g4 d4 22. h4 dxc3+ 23. bxc3 Qd5+ 24. Kc1 Rxe3 $1 25. Rd1 Qe5 26. Kb2
Bxg4 27. Rhg1 h5 28. Bd3 Rb8 29. Na5 Rg3 30. Rde1 Rxg1 $1 31. Rxe5 Bxe5 32. Qf2
Rh1 33. Qe3 Rh3 34. Qe4 Rd8 35. Qh7+ Kf8 {
Miss Graf scored no win in Mar del Plata 1941.} 0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "4"]
[White "Luckis, Marcos"]
[Black "Winz, Victor"]
[Result "1-0"]
[ECO "C07"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Victor Winz was a Polish player, who represented Palestine. He had to stay in
Argentina.} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd8 7.
O-O Nc6 8. Nb3 Nf6 9. Nbxd4 Nxd4 10. Nxd4 a6 $5 11. Be3 $5 Be7 12. Qe2 O-O 13.
a4 Nd5 14. Rfd1 Nxe3 15. Nc6 $2 {White shows optimism.} ({Right is} 15. Qxe3)
15... Nxd1 16. Nxd8 Nxb2 17. Nxe6 Bxe6 18. Bxe6 fxe6 19. Qxe6+ Rf7 20. Qb3 Rc8
$2 (20... Bf6 {keeps a material advantage.}) 21. Qxb2 Bf6 22. c3 $1 {
Winz experiences a nasty surprise.} Bxc3 23. Qc2 b5 24. Rd1 b4 25. Qb3 Re8 26.
g3 Kf8 27. Rd6 g6 28. Qc4 a5 29. Kg2 Rb8 $6 (29... Re5 30. f4 Ref5 {
offers more resistance.}) 30. Ra6 $1 Bg7 31. Qd5 Rfb7 32. Rxa5 $1 ({
The pointe is} 32. Rxa5 b3 33. Ra8 $1 Rxa8 34. Qxb7) 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "5"]
[White "Bolbochan, Julio"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D32"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Julio was the younger brother of Jacobo Bolbochan.} 1. d4 d5 2. c4 e6 3. Nf3
c5 4. Nc3 Nc6 5. Bg5 f6 6. Bh4 $5 (6. cxd5 cxd4 7. dxc6 dxc3 8. Qxd8+ Kxd8 {
was played in Glass - Michel, Wien 1936.}) 6... g5 $5 (6... cxd4 $1 7. Nxd4 Qb6
8. e3 Qxb2 9. Ndb5 Bb4 {counters full of risk.}) 7. Bg3 g4 8. cxd5 gxf3 $6 ({
Preferable is} 8... exd5 $1 9. Nd2 cxd4) 9. dxc6 $1 cxd4 10. Qa4 $5 ({
The alternative is} 10. c7 $1) 10... bxc6 11. O-O-O e5 12. e3 $5 {
Julio wants to attack.} Bd7 13. exd4 c5 14. Bb5 cxd4 15. Rhe1 $5 Bxb5 $2 {
Michel allows an attack.} (15... Be7 $1 16. gxf3 Bxb5 17. Nxb5 Kf8 $1 {
equalises the game.}) 16. Nxb5 $1 Kf7 17. Qb3+ Kg6 $5 18. Qd3+ Kg7 {
Black has lost a tempo.} 19. Qxf3 Nh6 $2 ({Better is} 19... a6 $1 20. Qg4+ Kf7
21. Qh5+ Kg7 22. Bxe5 $1 axb5 23. Rxd4 {but White charges strongly.}) 20. Kb1
$5 Rb8 $5 21. Rxe5 $1 Qa5 ({The pointe is} 21... fxe5 22. Bxe5+ Kg8 23. Qg3+
Kf7 24. Rxd4) 22. Rg5+ $1 fxg5 23. Be5+ Kg6 ({Or} 23... Kg8 24. Qb3+ Nf7 25.
Bxb8) 24. Qe4+ Kf7 25. Qd5+ Kg6 26. Qe6+ Kh5 27. h3 $1 Nf5 28. Qxf5 Rb6 29. g4+
Kh6 30. h4 $1 {The king hunt will end in mate soon.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "5"]
[White "Najdorf, Miguel"]
[Black "Engels, Ludwig"]
[Result "1-0"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Engels played for Germany and had to stay in Argentina. He went to Brazil
after the war.} 1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 Nbd7 5. O-O Be7 6. Nbd2 O-O
7. b3 b6 8. Bb2 Bb7 9. Qe2 c5 10. Ne5 $5 cxd4 11. Nxd7 Nxd7 12. exd4 Bf6 13.
Rab1 Nb8 $6 {White gets time for manoeuvring.} 14. f4 Nc6 15. c3 Qe7 16. Nf3 a6
$5 {Black advances too slowly.} 17. Rbe1 b5 18. Ng5 $5 g6 ({The pointe is} 
18... Bxg5 $2 19. fxg5 Qxg5 20. Bc1 {and the white pieces come into action.})
19. Qg4 Rfe8 $2 ({Better is} 19... Rae8 $1 20. Qh4 h5 21. g4 {
but Black suffers.}) 20. Qh4 $2 (20. Nxh7 $1 Kxh7 21. f5 $1 g5 $5 22. fxe6+ {
wins immediately.}) 20... Bxg5 $2 (20... h5 $5 21. g4 e5 $1 22. gxh5 e4 {
defends well.}) 21. fxg5 e5 22. Re3 $5 Bc8 23. g4 $5 Qd7 24. Be2 exd4 25. Rh3
$1 f6 26. gxf6 Qf7 27. Bf3 $1 {White threatens Bxd5.} Ra7 28. cxd4 Nb4 29. Qg5
Rd7 30. Ba3 a5 $5 31. Bxb4 axb4 32. Bg2 Rd6 33. Rhf3 Ree6 34. R3f2 Bb7 35. Qf4
h6 36. g5 hxg5 37. Qxg5 Qh7 38. Bh3 Re4 39. Bf5 $1 Rh4 40. Bxg6 Qh6 41. Qe5 $1
{Najdorf defeated a solid defender.} (41. Qe5 Qxg6+ 42. Rg2 Rg4 43. f7+ {
wins elegantly.}) 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "6"]
[White "Stahlberg, Gideon"]
[Black "Bolbochan, Julio"]
[Result "1-0"]
[ECO "E39"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. Nf3 O-O 7. Bg5 Bxc5 8.
e3 b6 $5 {Julio plays the Nimzo Indian Defence solidly.} 9. Be2 Bb7 10. Rd1 Be7
11. O-O Ne8 $5 ({More active is} 11... Rc8) 12. Bf4 $1 d6 13. Rd2 a6 14. Na4
Nb8 $6 {He disorganises the defence of the queenside.} ({Preferable is} 14...
Qc7) 15. Qb3 $5 {The c-pawn can be advanced immediately.} Nd7 16. c5 $1 Bd5 $2
({Better is} 16... Bxf3 $1 17. Bxf3 bxc5 $1 18. Bxa8 Qxa8 {
and Black has compensation for the material deficit.}) 17. Rxd5 $1 {
A sacrifice decides the game.} exd5 18. cxb6 Rb8 $5 19. Nd4 $1 {
White threatens Nc6.} Nxb6 ({Or} 19... Qc8 20. Nf5 $1 Bd8 21. Nxd6 Nxd6 22.
Bxd6) 20. Nc6 Nxa4 21. Qxb8 Qxb8 22. Nxb8 g5 23. Bg3 Ng7 24. Nc6 Bf6 25. Bxd6
Re8 26. Bxa6 Nxb2 {Stahlberg has won a pawn.} 27. Bb5 Nf5 28. Bc5 Ra8 29. a3 d4
30. exd4 Na4 31. Bxa4 Rxa4 32. d5 Bb2 33. d6 Bf6 34. d7 {
Najdorf and Stahlberg competed for the first place.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "7"]
[White "Feigins, Movsas"]
[Black "Engels, Ludwig"]
[Result "0-1"]
[ECO "A80"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 g6 $5 ({Usual is} 3... e6) 4. Bxf6 exf6 5. e3 d5 6.
Qf3 c6 7. Bd3 Be6 8. h4 h5 9. Nge2 Nd7 10. Qg3 Bf7 11. O-O-O Qa5 12. Kb1 O-O-O
13. f3 Qc7 14. Qh3 $6 Bh6 15. e4 fxe4 16. fxe4 dxe4 17. Nxe4 Rhe8 18. c4 $2 Be6
$2 (18... Bxc4 $1 19. Bxc4 Rxe4 {gains a pawn.}) 19. Qg3 Qxg3 20. N2xg3 Kc7 21.
Nc3 Bg4 22. Rde1 Ne5 $5 23. Bc2 Rxd4 24. Bxg6 Rh8 $5 25. Bf5 $2 (25. Bxh5 $1
Bxh5 26. Nxh5 Bd2 27. Ng7 $1 {almost equalises.}) 25... Bd2 26. Ref1 Bxc3 27.
bxc3 Rxc4 28. Bxg4 Rxg4 29. Rh3 Ng6 30. Rxf6 Nf4 31. Rh2 Nd5 32. Rf3 b5 33. Ne2
Re8 34. g3 Rge4 35. Nf4 Re1+ 36. Kb2 Nb6 37. a3 (37. Kb3 Nc4 38. Nd3 Rb1+ 39.
Nb2 Re3 {also wins for Black.}) 37... Nc4+ 38. Ka2 Rc1 39. Nxh5 Ree1 40. Rhf2
Ra1+ 41. Kb3 Rec1 42. Nf6 Kb6 $1 {White will be mated.} 0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "7"]
[White "Winz, Victor"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D33"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 c4 7. e4 {
They play the wild Rey Ardid Variation of the Tarrasch.} dxe4 8. Ng5 Qxd4 $5 {
Stahlberg captures a second pawn.} (8... Be7 {
was played in Opocensky - Stolz, Bad Nauheim 1935.}) 9. Bf4 (9. Be3 $1 Qxd1+
10. Rxd1 {will draw in Maderna - Julio Bolbochan, La Plata 1944.}) 9... Bb4 (
9... Nf6 $5 10. Qxd4 Nxd4 11. O-O-O {
happens in Spassky - Shepoy, Leningrad 1956.}) 10. Qc2 $2 {
The queens should have been exchanged.} Bg4 $5 11. a3 Bxc3+ $6 (11... Ba5 $1
12. Bg2 Qd3 13. Bxe4 Qxc2 14. Bxc2 Nf6 {keeps an extra pawn.}) 12. bxc3 Qd5 13.
Nxe4 $2 ({Better is} 13. Bg2) 13... Ne5 $6 (13... Bf3 $1 14. Nd6+ Kf8 $1 15.
Bxc4 Re8+ $1 16. Kf1 Be2+ $1 {brings an ingenious win.}) 14. Bxe5 Qxe5 15. Be2
Bxe2 16. Qxe2 Kf8 17. f4 Qe7 18. Kf2 f5 19. Ng5 Qxe2+ 20. Kxe2 Re8+ {
Black has an extra pawn in the endgame.} 21. Kd2 Nf6 22. Rab1 b6 23. Rhe1 h6
24. Nf3 Rxe1 25. Rxe1 Ne4+ 26. Kc2 Kf7 27. Ne5+ Kf6 28. Rd1 $6 (28. Nxc4 $1 Rc8
29. Kb3 g5 30. Re3 {offers more resistance.}) 28... g5 $1 29. Nxc4 gxf4 30.
gxf4 Rc8 31. Kb3 b5 32. Nd6 Rxc3+ 33. Kb4 Rf3 34. Nxb5 Rxf4 {
Black threatens ..Nf2+.} 35. Ka5 Rh4 36. Nxa7 f4 37. Nb5 f3 38. Kb6 f2 39. Rf1
Rxh2 40. a4 Nd2 {
Stahlberg triumphed although he only benefitted from the mistakes partially.}
0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "8"]
[White "Eliskases, Erich"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "E67"]
[Annotator "JvR"]
[PlyCount "92"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nbd7 7. Nc3 e5 8. h3
c6 9. dxe5 dxe5 10. Be3 Qc7 $5 11. Qc1 $5 {Eliskases has an edge.} Re8 12. Rd1
Nb6 13. b3 Bd7 14. Ng5 Rad8 15. Nge4 Nxe4 16. Nxe4 Bf5 17. Rxd8 Rxd8 18. Bg5
Re8 $6 ({Preferable is} 18... Rb8) 19. c5 $1 Nc8 $2 {
Black underestimates the attack on his king.} (19... Nd7 $1 20. Nd6 Ra8 {
defends well.}) 20. Nf6+ $1 Bxf6 21. Bxf6 {White threatens mate in two.} Re6 $1
22. Bh4 $1 {He has planned Qh6 and Rd1.} Re8 23. Qh6 f6 $5 ({The pointe is} 
23... Re6 24. Rd1) 24. g4 $5 Be6 25. Bxf6 a5 26. Rd1 Na7 27. Be4 $5 Qf7 28. Qg5
$5 Bd5 29. Bxd5 cxd5 30. Bxe5 Nc6 31. Bg3 Rxe2 32. Qxd5 Qxd5 33. Rxd5 Rxa2 34.
Rd7 {White has a won endgame.} Rb2 35. Rxb7 a4 $1 36. Rb6 $1 {
He is going to sacrifice an exchange.} a3 37. Rxc6 a2 38. Ra6 Rb1+ 39. Kg2 a1=Q
40. Rxa1 Rxa1 {Erich has gained a bishop and three pawns for a rook.} 41. c6 $1
Rc1 42. c7 Kf7 43. Bf4 Rc3 44. b4 Ke6 45. b5 Kd7 46. b6 Kc8 {
Eliskases will decide the game on the kingside.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "8"]
[White "Guimard, Carlos"]
[Black "Sulik, Franciszek"]
[Result "1-0"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Sulik participated in the Olympiad as a reserve for Poland. He stayed in
Argentina for a few years. Then he joined the Free Polísh Forces and fought in
Italy. He lived in Scotland after the war and emigrated to Australia later.} 1.
d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. b3 Nc6 6. O-O cxd4 7. exd4 Bd6 8. c3 $5
({Theory is} 8. Bb2 {(Tarrasch - Chigorin, St Petersburg 1893 (21)).}) 8... Bd7
9. Re1 Qc7 10. Qe2 Rc8 11. Bb2 Nh5 $5 12. g3 Nf6 13. Nbd2 Ne7 $5 {
Black should castle.} 14. Ne5 h5 $6 15. Ndf3 a6 $6 {He keeps wasting time.} 16.
Rac1 Qa5 $6 17. Nxd7 Nxd7 18. a3 Qb6 $6 19. c4 $1 Qxb3 $5 {
Sulik bites the bait.} 20. c5 $5 Bb8 21. Ng5 Rc6 $5 22. Rb1 $1 b5 23. Qd2 $5 (
23. Qf3 $1 {wins at once.}) 23... Bc7 $5 24. Bc3 Qa4 25. Bc2 {White has caught
a queen. Guimard and Julio Bolbochan were the best Argentinian players.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "9"]
[White "Luckis, Marcos"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "E52"]
[Annotator "JvR"]
[PlyCount "124"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 b6 6. Bd3 Bb7 7. Qc2 d5 8. O-O
Nbd7 $5 (8... dxc4 9. Bxc4 Nbd7 {was played in Fox - Capablanca, New York 1931.
}) 9. cxd5 $1 exd5 10. a3 Bxc3 11. bxc3 Re8 12. a4 c5 13. dxc5 Nxc5 14. Bb5 Rf8
15. Nd4 Qc7 16. Be2 $5 Rfc8 17. Bb2 Nce4 18. Rfc1 $1 a6 19. c4 $1 {
White has a plus.} dxc4 20. Qxc4 Qd6 21. Qd3 $2 (21. Qb3 $1 Nxf2 $5 22. Nf5 $1
Qd7 23. Qxb6 {keeps the edge.}) 21... Nxf2 $1 {Stahlberg starts an attack.} 22.
Kxf2 Qxh2 23. Bf3 Ng4+ 24. Ke1 Bxf3 25. Nxf3 Qxg2 26. Qe2 Nxe3 27. Qxg2 Nxg2+ {
Black has gained four pawns for a bishop.} 28. Kf2 Nf4 29. Ke3 Ne6 30. a5 $6 ({
Better is} 30. Rxc8+ Rxc8 31. Nd4 $1 {
and a win will be difficult to achieve for Black.}) 30... Rxc1 31. Bxc1 bxa5
32. Rxa5 f6 33. Nd4 Nxd4 $5 34. Kxd4 Kf7 35. Rc5 $6 {
He makes way for the a-pawn.} Ra7 $5 36. Ke4 $6 a5 $1 37. Kf5 $5 a4 $1 38. Ba3
h5 $1 39. Kf4 Kg6 $6 ({Preferable is} 39... g6 40. Rc8 Rb7) 40. Rc4 Ra5 41. Kg3
Kh6 42. Rd4 $6 (42. Rc6 $1 {hinders the kingside pawns.}) 42... g5 $1 43. Rd6
Kg6 44. Bb2 Rf5 45. Ra6 h4+ 46. Kg2 Rf4 $5 47. Be5 $1 Rf5 48. Ba1 g4 $1 49.
Rxa4 Kg5 50. Bc3 h3+ 51. Kh2 $2 (51. Kg1 $1 Rf3 52. Bd2+ Kh5 53. Bf4 $1 g3 54.
Bxg3 $1 Rxg3+ 55. Kh2 {leads to a theoretical draw.}) 51... Rf2+ 52. Kg1 g3 $1
{Black triumphs at last.} 53. Ra1 f5 54. Bd4 Rc2 55. Kh1 f4 56. Bg1 Kg4 57. Rb1
h2 58. Bxh2 Rxh2+ 59. Kg1 Ra2 60. Rc1 f3 61. Rb1 Rg2+ 62. Kh1 Rh2+ {
Stahlberg had won a hard game.} 0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "10"]
[White "Iliesco, Juan"]
[Black "Sulik, Franciszek"]
[Result "1-0"]
[ECO "A09"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

{Juan Iliescu was born in Rumania, but he had moved to Argentina long before
the Olympiad of 1939.} 1. Nf3 d5 2. g3 Nf6 3. Bg2 g6 4. c4 dxc4 5. Qa4+ c6 6.
Qxc4 Bg7 7. O-O O-O 8. Qc2 $5 Na6 9. Nc3 h6 10. d4 Be6 11. e4 Qc8 12. a3 Rd8
13. Ne2 Nh5 $6 ({Preferable is} 13... c5 $1) 14. Be3 $1 {
White makes a lot of prophylactic moves.} Nc7 15. Rac1 Ne8 16. Qa4 Bg4 $5 17.
Rfe1 Nd6 18. Ne5 Bh3 19. Bf3 Nf6 $5 20. Qb3 $6 (20. Nxc6 $1 bxc6 21. e5 {
attacks in the centre.}) 20... Nfxe4 21. Nxf7 $1 Be6 22. Nxd6 Nxd6 $5 23. d5 $1
Bf7 24. Nd4 Qh3 $5 25. Rcd1 c5 26. Ne6 Bxe6 27. dxe6 Rac8 $5 28. Bf4 c4 $2 ({
Better is} 28... Bd4 $1) 29. Qc2 Qf5 30. Qe2 $6 (30. Qxf5 Nxf5 31. Bxb7 {
gains a pawn.}) 30... Qc5 31. Rd5 Qb6 32. Be5 $6 Bxe5 33. Qxe5 Nf5 $2 {
Sulik opens a gate.} (33... Rf8 $1 {defends properly.}) 34. Rd7 $1 Rf8 35. Rxb7
Qd6 36. Bg4 Qxe5 37. Rxe5 Rb8 38. Reb5 Rbd8 39. Bxf5 Rxf5 40. Rxf5 gxf5 41.
Rxe7 f4 42. gxf4 Rb8 43. Rxa7 {Iliescu scored well in the tournament.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "11"]
[White "Michel, Paul"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "C08"]
[Annotator "JvR"]
[PlyCount "128"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. dxc5 Bxc5 6. Nb3 Bb6 7. Nf3 Nf6 8.
Bb5+ Nc6 9. O-O $5 ({Theory is} 9. Qe2+ Ne4 $1 10. Be3) 9... O-O 10. Bg5 Bg4
11. h3 Bh5 12. Bxf6 Qxf6 13. Qxd5 Bxf3 14. Qxf3 Qxb2 15. Bxc6 bxc6 16. c4 (16.
Qxc6 $2 Rac8 17. Qf3 Rxc2 {leads to a black attack.}) 16... Rac8 17. Rfe1 g6
18. Qe2 Qa3 19. Qc2 Rce8 20. Qc1 $5 Qa4 $5 21. Qc2 Qb4 22. Nd2 Bd4 23. Rac1
Rxe1+ 24. Rxe1 Rd8 25. Nf3 Rb8 $5 26. Re2 Bf6 27. Qe4 $6 (27. g4 $1 h6 28. Kg2
{equalises.}) 27... Qb1+ $1 28. Qxb1 Rxb1+ 29. Kh2 Rc1 $1 {
The ending favours Black.} 30. Re8+ $6 (30. Ne5 $1 c5 31. Ng4 Bd4 32. Ne3 Rc3
33. Kg3 {defends properly.}) 30... Kg7 31. Ra8 Be7 32. Rxa7 Bd6+ 33. g3 Rc2 $1
34. Nd4 ({The pointe is} 34. Kg2 $2 Bc5 $1) 34... Rxf2+ 35. Kh1 Bxg3 36. Nxc6 {
White has positional problems.} Rh2+ 37. Kg1 Rc2 $1 38. Rb7 $2 (38. Rd7 $1 Rxc4
39. Nd8 $1 {counters strongly.}) 38... Rxc4 39. Nb4 ({The pointe is} 39. Nd8 $2
Bc7 $1) 39... Bd6 40. Nd3 Ra4 41. Rb2 Ra3 42. Rd2 g5 43. Kg2 h5 44. Nf2 Bf4 45.
Rb2 Rg3+ 46. Kh1 Be3 47. Kh2 Bxf2 48. Rxf2 Ra3 49. Kg2 Kg6 50. Rb2 f6 51. Rc2
h4 52. Rb2 f5 53. Rb6+ Kh5 54. Rb2 Ra5 55. Kh2 g4 $1 56. hxg4+ fxg4 57. a3 Rxa3
58. Rb5+ Kg6 59. Rb4 Kg5 60. Kg1 h3 61. Kh1 g3 62. Rb1 Kf4 63. Rf1+ Ke3 64. Rg1
Ke2 {Stahlberg played excellent positional games and scored well.} 0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "12"]
[White "Frydman, Paulino"]
[Black "Sulik, Franciszek"]
[Result "1-0"]
[ECO "D43"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 h6 6. Bxf6 Qxf6 7. Qb3 Nd7 8. e4
dxe4 9. Nxe4 Qf5 $5 ({Usual is} 9... Qf4) 10. Bd3 Qa5+ 11. Nc3 Be7 12. O-O O-O
13. Rae1 Bf6 14. Bb1 g6 15. Ne4 Bg7 16. c5 $5 b6 17. Rc1 $6 (17. Nd6 $1 bxc5
18. Bxg6 $1 {charges.}) 17... Rb8 $1 18. cxb6 Rxb6 19. Qc2 e5 $6 ({
Preferable is} 19... c5 $1) 20. Nd6 Ba6 21. Rfd1 exd4 22. Nxd4 Ne5 $6 23. f4 $2
(23. N6f5 $1 Bf6 24. Nxh6+ {grabs an advantage.}) 23... Nd3 $2 (23... Ng4 $1
24. N6f5 Bxd4+ 25. Nxd4 Qh5 26. Nf3 Ne3 {gains an exchange.}) 24. Rxd3 Bxd3 25.
Qxd3 Rd8 $1 26. Ne6 $1 fxe6 27. Qxg6 Qd2 $4 (27... Rxd6 28. Qe8+ Bf8 29. Qg6+
Bg7 {leads to perpetual check.}) 28. Qxe6+ Kh8 29. Nf7+ $1 Kg8 30. Nxd8+ {
Sulik lost by a horrible mistake.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "13"]
[White "Czerniak, Moshe"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "D40"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. e3 Be7 5. Nf3 O-O 6. Bd3 dxc4 7. Bxc4 c5 8. O-O
cxd4 9. exd4 Nbd7 10. Qe2 Nb6 11. Bb3 Bd7 12. Bg5 Bc6 13. Rad1 Bd5 $5 ({
Known is} 13... Nfd5) 14. Nxd5 Nbxd5 15. Ne5 {
White has the two bishops and charges in the centre.} h6 16. Bh4 a5 17. a3 Ra6
$5 18. Ba2 $5 Rd6 $5 {Guimard makes a strange manoeuvre.} 19. f4 $1 Nd7 20. Be1
$1 Bf6 $6 (20... Nxe5 21. fxe5 Rd7 {defends properly.}) 21. Bb1 $6 (21. Nc4 $1
Ra6 22. f5 $1 {starts an attack.}) 21... Nxf4 $2 (21... g6 $1 {
meets the threat on the diagonal b1-h7.}) 22. Qe4 $1 Ng6 23. Nxg6 fxg6 24. Bg3
$1 {The possibilities are Qxg6 and Bxd6.} ({Not} 24. Qxg6 $4 Bxd4+ $1) 24...
Nc5 $5 {Desperation.} 25. Qxg6 Bxd4+ 26. Kh1 {Rook f1 has been protected.}
Rxf1+ 27. Rxf1 Bf6 28. Bxd6 Qxd6 29. Qe8+ Qf8 30. Bh7+ {
Czerniak carried out a drastic assault.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "14"]
[White "Najdorf, Miguel"]
[Black "Bolbochan, Jacobo"]
[Result "1-0"]
[ECO "D46"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 e6 5. Nf3 Nbd7 6. Bd3 Bb4 7. O-O O-O 8. Qb3
Bd6 $5 9. cxd5 exd5 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 h6 $5 (12... Nf6 13. Bg5
h6 14. Bxf6 Qxf6 {equalises.}) 13. Bc2 Re8 14. Bd2 Nf8 $5 {
Black plays passively.} 15. Rfe1 Re7 $5 16. Rxe7 Qxe7 17. d5 $1 cxd5 18. Qxd5
Be6 19. Qe4 Rd8 20. Bc3 Bc8 $6 ({Preferable is} 20... Qc7) 21. Qa4 $1 a6 22.
Re1 Qc7 23. Qh4 Rd7 $2 {Black gives up the control over the eighth rank.} ({
Correct is} 23... b5 $1 {(Najdorf).}) 24. Qg4 $6 (24. Re8 $1 Re7 25. Qd4 $1 f6
26. Rxc8 $1 Bxh2+ 27. Nxh2 Qxc8 28. Ng4 {wins quickly.}) 24... f6 25. Bf5 $1
Rd8 26. Nh4 $1 Be5 $6 (26... Bxh2+ $1 27. Kh1 Be5 {gains a pawn.}) 27. Bxc8
Qxc8 (27... Rxc8 28. Nf5 Kh7 29. Bxe5 fxe5 30. Ne7 $1 Re8 31. Qf5+ Kh8 32. Qxe5
Qxe5 33. Rxe5 {leads to an extra pawn in the endgame.}) 28. Nf5 $1 Qd7 29.
Nxh6+ Kh7 30. Nf5 Bxc3 31. Qh5+ $1 Kg8 32. Ne7+ Qxe7 33. Rxe7 Ng6 34. Rxb7 {
Najdorf carried out a strong attack.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "15"]
[White "Luckis, Marcos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "D75"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d5 5. Nf3 O-O 6. cxd5 Nxd5 7. Bg2 c5 8. O-O
cxd4 9. Nxd4 Nxc3 10. bxc3 Qa5 11. Qc2 $5 ({Usual is} 11. Qb3) 11... e5 12. Nb3
Qa4 13. Qe4 Qxe4 14. Bxe4 {White has little advantage.} Nc6 $1 15. Ba3 $6 Rd8
16. Rfd1 Bf5 $1 {Black takes the initiative.} 17. Bd5 $5 e4 $1 {
He gains an edge.} 18. Rac1 h5 $1 19. c4 Rac8 20. e3 $6 {
White slightly weakens his pawn structure.} ({Preferable is} 20. Kg2 Bh6 21.
Ra1) 20... Ne5 $6 (20... Rc7 $1 {keeps the plus.}) 21. Na5 $2 ({Correct is} 21.
Bxb7 Rxd1+ 22. Rxd1 Rxc4 23. Nd4 Bg4 24. Rb1 {and equality.}) 21... b6 $5 22.
Nb7 Rd7 23. Nd6 Rcd8 ({Or} 23... Bf8 $5 24. c5 $1 Rcd8 25. Nxf5 gxf5 {
and Black has an edge (Najdorf).}) 24. Nb7 $2 (24. c5 $1 bxc5 25. Nb7 Rxd5 26.
Nxd8 Rd3 27. Bxc5 {defends properly.}) 24... Rb8 25. Nd6 Bg4 $1 26. Rf1 Be2 $5
27. Nxe4 Bxf1 28. Kxf1 Rc8 $5 29. Bd6 $2 (29. Ke2 $1 {offers more resistance.})
29... Ng4 $1 30. h3 Nf6 31. Nxf6+ Bxf6 32. Bb4 $2 (32. Ba3 b5 $1 33. e4 bxc4
34. Rxc4 Rxc4 35. Bxc4 Rd2 {also wins for Black (Najdorf).}) 32... Rxd5 {
Najdorf was chasing Stahlberg.} 0-1

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "15"]
[White "Stahlberg, Gideon"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "D36"]
[Annotator "JvR"]
[PlyCount "129"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. e3 c6 6. cxd5 exd5 7. Bd3 Be7 8.
Qc2 Nh5 9. Bxe7 Qxe7 10. Nge2 g6 11. O-O-O Ndf6 $5 12. Kb1 Ng7 13. Ng3 Bd7 14.
Rhe1 O-O-O $5 (14... O-O 15. e4 dxe4 16. Ngxe4 Be6 17. Nxf6+ Qxf6 {
defends quietly.}) 15. e4 $1 dxe4 16. Ngxe4 Rhe8 $6 ({Preferable is} 16... Be6
17. Nc5 Qc7 18. Qa4 Kb8) 17. d5 $1 Kb8 18. d6 Qe6 $2 ({Better is} 18... Qe5 $1
19. f4 Qf5 $1) 19. Nb5 $1 Nxe4 ({The pointe is} 19... cxb5 20. Qc7+ Ka8 21. Nc5
) 20. Nc7 $1 Qf6 21. Nxe8 Nxe8 22. Bxe4 Nxd6 {
White has won an exchange for a  pawn.} 23. Ka1 Nxe4 24. Qxe4 Re8 25. Qd3 Be6
26. Re3 a6 27. Qd6+ Ka8 28. f4 Qf5 29. Re5 $1 Qc2 30. Qd2 Qxd2 31. Rxd2 h5 32.
b3 Kb8 33. Kb2 Kc7 34. Kc3 Ra8 35. Rd4 Rf8 36. Kd2 Ra8 37. h3 Rh8 38. Ke3 Kc8
39. Kf2 Kc7 40. Kg3 h4+ 41. Kf2 Rh7 42. b4 $1 Rh8 43. a4 Rh7 44. Ree4 {
It is difficult for White to make any progress.} Rh8 $2 (44... Rh5 {
prevents the next move.}) 45. f5 $1 {He ruins the black pawn structure.} gxf5
$5 (45... Bxf5 46. Re7+ Kc8 47. Rxf7 {opens the centre files.}) 46. Rxh4 Rg8
47. Rhf4 b6 48. h4 c5 49. bxc5 bxc5 50. Rd2 Kc6 51. h5 Rh8 52. Rh4 Rh6 53. Ke3
f6 54. Rd8 Bb3 55. Rb8 c4 56. a5 Kc5 57. Kd2 f4 58. Rb6 Ba4 59. Kc3 Bc6 60.
Rxf4 Bxg2 61. Rf5+ Bd5 62. Rbxf6 Rh7 63. Rg6 Re7 64. Rgg5 Re3+ 65. Kc2 {
Stahlberg kept the lead.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "16"]
[White "Eliskases, Erich"]
[Black "Vinuesa, Juan"]
[Result "1-0"]
[ECO "A28"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nf3 Nc6 3. d4 e4 4. Nfd2 Nf6 5. e3 Bb4 6. Nc3 O-O 7. Be2 Re8 8. O-O
Bxc3 9. bxc3 d5 $5 (9... d6 $1 {
occurred in Botvinnik - Ragozin, Leningrad 1940.}) 10. Rb1 $1 Na5 $5 (10... b6
11. cxd5 Qxd5 12. f3 {also leads to a white initiative.}) 11. cxd5 $1 Nxd5 12.
Qc2 $1 {Eliskases attacks the hostile pawn structure by little moves.} Nf6 13.
c4 $5 b6 14. Bb2 Nb7 15. d5 $5 Nd6 $6 ({Preferable is} 15... Nc5 $1 16. Nb3
Nxb3 17. axb3 Qd6) 16. Qc3 Qe7 17. Nb3 Bd7 18. Rfd1 Nb7 19. Rbc1 Ba4 20. Rd2
Bxb3 21. axb3 a5 22. Ra1 Nc5 23. Rdd1 Rad8 24. b4 $1 {White opens the position.
} axb4 25. Qxb4 Nfd7 26. Bd4 Ne5 27. Ra7 $1 Rd6 $4 {Black blunders a pawn.} ({
Correct is} 27... Qd6 $1 28. Rda1 Rb8 {and White has a positional advantage.})
28. Bxc5 bxc5 29. Qxc5 Nf3+ 30. Bxf3 exf3 31. Qxc7 Qe5 32. c5 {
Eliskases scored his points quietly.} 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "17"]
[White "Czerniak, Moshe"]
[Black "Frydman, Paulino"]
[Result "1-0"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "155"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Nc6 7. O-O a6 8. Kh1
Be7 9. f4 O-O 10. Bf3 Qc7 11. g4 Rd8 12. g5 Ne8 13. Nde2 $5 {
Czerniak avoids an exchange of knights.} (13. f5 $1 Nxd4 14. Qxd4 Qc5 15. Qd3 {
favoured White in Michel - Ernst, Bad Saarow 1937.}) 13... b5 14. a3 Bb7 15. b3
$5 b4 $5 16. Na4 d5 $1 17. exd5 Na7 $5 18. c4 exd5 19. cxd5 $2 bxa3 $2 (19...
Rxd5 $1 20. Bxd5 Rd8 {gains an advantage.}) 20. Be3 $1 Nc8 21. Qd2 Qd7 22. Rfd1
a5 $5 23. Bb6 $5 Nxb6 $6 ({Preferable is} 23... Bb4 $1 24. Qc2 Nxb6 25. Nxb6
Qh3 26. Bg2 Qg4 27. Nxa8 Bxa8) 24. Nxb6 Qh3 25. Bg2 Qxb3 $2 26. Nxa8 $6 (26.
Rab1 $1 Bb4 27. Rxb3 Bxd2 28. Rxd2 {wins at once.}) 26... Bb4 $5 27. Nd4 Qxd5
$5 28. Nb6 $1 (28. Bxd5 $5 Bxd5+ 29. Kg1 Bxd2 30. Rxd2 Rxa8 31. Rxa3 {
achieves a material gain.}) 28... Qd6 29. Nc4 $1 Bxg2+ 30. Qxg2 Qxf4 31. Qe2 {
White has a rook for three pawns.} Nc7 32. Qe3 Qg4 33. Ne5 Qh5 34. Qf3 $5 Qxf3+
35. Ndxf3 Re8 $5 36. Nc4 Nb5 37. Kg2 g6 38. Kf2 $6 (38. Rd5 $1 Nc3 39. Re5 {
combines attack and defence.}) 38... Rc8 39. Nce5 Nc3 40. Rd7 $1 Ne4+ 41. Ke3
Nc5 $1 42. Rxf7 $6 ({Correct is} 42. Rdd1 $1 Nb3 43. Ra2 Nc1 44. Rg2 {
and White plays for a win.}) 42... Nb3 $1 43. Rd1 $1 a2 $2 (43... Re8 44. Rdd7
Bf8 {defends accurately.}) 44. Rdd7 $1 Bc5+ $5 45. Ke2 $1 Bf8 46. Ng4 Rc2+ 47.
Kd3 $4 Rc3+ $4 (47... Rc6 $1 48. Nfe5 Nc5+ {turns the tables.}) 48. Ke2 Rc2+
49. Ke3 Bc5+ $6 (49... Rc3+ 50. Kf2 $1 Rc2+ 51. Kg3 a1=Q 52. Nf6+ Qxf6 53. gxf6
$1 Rc3 {offers more resistance.}) 50. Kd3 $1 Rc3+ 51. Kxc3 a1=Q+ 52. Kxb3 Qa3+
53. Kc4 Qb4+ 54. Kd5 Qxg4 55. Kxc5 Qb4+ 56. Kd5 Qb3+ 57. Ke4 Qc2+ 58. Kf4 Qc4+
59. Kg3 $1 Qxf7 60. Rxf7 Kxf7 61. Nd4 a4 62. Nb5 Ke6 63. Kf4 Kd7 64. Ke4 Kc6
65. Nc3 a3 66. Kd3 Kd7 67. Kc2 Ke6 68. h4 Ke5 $5 69. Kb3 Kd4 70. Nb5+ Ke5 71.
Nc7 Kf4 72. Ne8 Kf5 73. Kxa3 Ke6 74. Kb4 Kf7 75. Nd6+ Ke6 76. Kc5 Ke5 77. Ne8
Kf5 78. Kd5 {Czerniak fought until the last round.} (78. Kd5 Kg4 79. Nf6+ Kxh4
80. Nxh7 {wins easily.}) 1-0

[Event "Mar del Plata"]
[Site "4"]
[Date "1941.??.??"]
[Round "17"]
[White "Raud, Ilmar"]
[Black "Engels, Ludwig"]
[Result "0-1"]
[ECO "D30"]
[Annotator "JvR"]
[PlyCount "90"]
[EventDate "1941.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. d4 d5 3. c4 c6 4. e3 e6 5. Nbd2 Be7 6. Bd3 O-O 7. O-O b6 8. b3
Bb7 9. Bb2 c5 $5 ({Known is} 9... Nbd7 10. Qe2 c5) 10. Qc2 $5 Nc6 11. a3 cxd4
12. exd4 Rc8 13. Rad1 Na5 $5 14. Ne5 Bd6 15. f4 Qe7 16. f5 $2 ({Better is} 16.
Bc3 $1 Bxa3 17. Bxa5 dxc4 18. bxc4 bxa5 19. c5 {and equality.}) 16... dxc4 17.
bxc4 Bxe5 18. dxe5 Qc5+ $1 19. Kh1 Ng4 $1 {White will lose an exchange.} 20.
Nf3 Ne3 21. Qe2 Nxd1 22. Qxd1 Rcd8 23. Qe2 Rxd3 24. Qxd3 Qxc4 25. Qd1 exf5 26.
Nd4 Rd8 27. Rxf5 Nc6 28. Rf4 Qa2 29. Qa1 Qxa1+ 30. Bxa1 Nxe5 31. Kg1 f6 32. Rf2
Kf7 33. Rc2 Rc8 34. Rxc8 Bxc8 35. Nb5 Bd7 36. Nxa7 Ke6 37. Bd4 Nc4 38. a4 Kd5
39. Bf2 Bxa4 40. Nc8 b5 41. Ne7+ Ke4 42. Bc5 Ne5 43. Ng8 Bb3 44. Ne7 Nd3 45.
Bd6 Bd5 {The final standings became: Stahlberg 13/17, Najdorf 121/2, Eliskases
111/2, Engels and Frydman 11, Czerniak, Feigins and Guimard 91/2, Julio
Bolbochon 9, Michel, Sulik and Vinuesa 8, Jacobo Bolbochon 71/2, Raud 61/2,
Iliescu 6, Luckis 51/2, Winz 41/2, Graf 21/2. Poor Raud did not survive in the
cold weather of July 1941 and died by starvation.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "1"]
[White "Najdorf, Miguel"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D46"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

{Eight men played double rounds at the Circulo de Ajedrez in Buenos Aires from
18 x until 10 xi 1941. The tournament celebrated the 25th Jubilee (Bodas de
Plata) of the club.  Pilnik had moved from Germany to Argentina circa 1930.
This tournament became his first major event. He travelled a lot. Eventually,
he died in Venezuela.} 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Nbd7 5. e3 Be7 6.
Bd3 O-O 7. O-O c6 8. b3 Qa5 9. Qc2 dxc4 $5 (9... Rd8 {
was played in Szabo - Lovas, Budapest 1936.}) 10. bxc4 e5 $6 ({Preferable is} 
10... Rd8 11. Bd2 Qc7 12. a4 b6) 11. c5 $5 {
White gains territory and the black queen stands offside.} g6 12. Bc4 $5 Nh5 $6
{A knight moves from the centre.} 13. Ne4 exd4 $6 {Black opens a diagonal.} 14.
exd4 Ndf6 15. Neg5 $6 (15. Bh6 $1 Rd8 16. Rfe1 {develops two pieces.}) 15...
Nd5 $1 16. Qb3 Qd8 $5 17. Re1 h6 $6 18. Ne4 Kh7 19. Bxd5 cxd5 20. Nc3 Nf6 $5
21. Ne5 Ne4 $6 ({More solid is} 21... Kg7) 22. Nxf7 $5 {
Najorf plays for the public.} (22. Nxe4 dxe4 23. Nxf7 Qxd4 24. Bxh6 {
wins material.}) 22... Rxf7 23. Rxe4 $1 Rf5 $5 (23... Bf5 24. Re1 Bf6 {
offers more resistance.}) 24. Rf4 $1 Bf6 $6 25. Rxf5 gxf5 26. Be3 $1 f4 $5 27.
Qc2+ Kg7 28. Bxf4 Bxd4 29. Rd1 Bxc3 30. Qxc3+ Kg6 31. Rd3 Kh7 32. Rg3 Qf8 33.
Be5 d4 34. Qxd4 {Najdorf started well.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "2"]
[White "Stahlberg, Gideon"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "D29"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3
Bb7 9. a4 Nbd7 10. e4 $5 ({Known is} 10. Rd1) 10... cxd4 ({The alternative is} 
10... Nxe4 $5 11. d5 $1 {(Czerniak).}) 11. Nxd4 Bc5 12. Rd1 Qb6 13. Be3 bxa4 $5
{Black could castle at once.} 14. Bxa4 O-O 15. Nd2 $5 Ne5 16. N2b3 Neg4 17.
Nxc5 Nxe3 $6 ({Correct is} 17... Qxc5) 18. Rdc1 $1 Rfc8 $6 19. Nxb7 $2 (19.
Ndb3 $1 Nxg2 20. Kxg2 Nxe4 {(Czerniak)} 21. Nxe4 f5 22. Nbd2 {gains a  piece.})
19... Rxc1+ 20. Rxc1 Qxd4 21. b3 Neg4 22. h3 Ne5 23. Qxa6 $1 Rf8 24. Qd6 Qxe4
25. Nc5 Qf4 26. Rd1 Nd5 $1 {Black threatens ..Nf3+.} 27. Kh1 Qf5 28. Bd7 $6 Nf4
$1 29. Bc6 $6 Nxc6 30. Nd7 ({Or} 30. Qxc6 Nxh3 $1) 30... Rc8 $2 ({Better is} 
30... Rd8 $1 31. Qxc6 Nxh3) 31. Nb6 Qg5 32. Rg1 Rd8 33. Qxc6 h6 34. Nc4 Rd3 35.
Ne3 f5 36. b4 Qh4 37. Qf3 $2 (37. Rf1 Rd2 38. Kg1 {defends well.}) 37... Rd2 $1
38. Nd1 Nd3 39. Qe3 {Black overstepped the time limit in a favourable position.
Stahlberg scored a lucky win.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "3"]
[White "Guimard, Carlos"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D30"]
[Annotator "JvR"]
[PlyCount "69"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 c5 3. dxc5 e6 4. a3 Bxc5 5. c4 Nf6 6. e3 Nc6 7. b4 Bb6 $5 8.
cxd5 exd5 9. Bb2 O-O 10. Be2 Re8 11. O-O Ne4 $6 ({More useful is} 11... a6 $1)
12. Nc3 Bc7 $2 13. Nb5 $2 (13. Nxd5 {gains a pawn.}) 13... Bb8 14. Nbd4 Qf6 15.
Rc1 Nxd4 $5 16. Nxd4 a6 17. f4 $1 {Guimard takes the initiative.} Bd7 18. Ba1
Qb6 19. Bg4 Bxg4 20. Qxg4 Nf6 $2 (20... Ba7 $1 21. Rfe1 Qg6 {defends well.})
21. Qh3 $5 Bd6 $6 22. Nf5 $1 Bf8 23. Bd4 Qe6 24. Rc7 Rab8 25. Rfc1 Kh8 $2 26.
Nh6 $1 Re7 ({The pointe is} 26... Qxh3 27. Nxf7+ $1 Kg8 28. gxh3) 27. f5 $1
Rxc7 28. Rxc7 Qe4 29. Nxf7+ Kg8 30. Bxf6 Re8 ({Or} 30... gxf6 31. Qg3+ Bg7 32.
Nh6+ {and White mates soon (Czerniak).}) 31. Bd4 Qb1+ 32. Kf2 Re4 33. Nh6+ Kh8
34. Rc8 Qa2+ 35. Kf3 {Guimard attacked strongly.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "3"]
[White "Najdorf, Miguel"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "E51"]
[Annotator "JvR"]
[PlyCount "123"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Bb4 5. e3 O-O 6. a3 Bxc3+ 7. bxc3 Re8 $5 ({
Usual is} 7... c5) 8. Bd3 Nc6 9. cxd5 exd5 10. Qc2 a6 11. O-O Bg4 $5 12. Nd2
Bh5 13. c4 Bg6 14. Bxg6 hxg6 15. Bb2 {White has the initiative.} Qd7 16. Rac1
Ne7 17. cxd5 Nexd5 18. Nc4 $1 {The attack on the queenside begins.} Qf5 19. Ne5
$5 c6 20. Rfe1 Qxc2 21. Rxc2 Rad8 22. Rb1 Ne4 $1 23. h3 g5 $1 {
Black has counter-play.} 24. Bc1 f6 25. Nd3 Re7 26. Rb3 Nd6 $6 {
A passive move weakens the counteraction.} 27. a4 $1 {The restraint increases.}
f5 28. Ba3 f4 29. Ne5 Rc7 30. Bxd6 Rxd6 31. Kf1 Re6 32. Ke2 c5 33. a5 $5 {
White allows exchanges.} cxd4 34. Rxc7 Nxc7 35. exd4 Nb5 36. Kd3 {
Najdorf has the better ending.} Kf8 37. Nf3 Ke7 $1 38. d5 $1 (38. Nxg5 $6 Re1
39. Nf3 Ra1 40. Ke4 Ra2 {gives chances to Black.}) 38... Rg6 $5 39. Nd4 $1 g4
$2 {Czerniak misses the best defence.} (39... Nd6 $1 40. Ne6 Nb5 41. f3 Rh6 $1
42. Nxg7 $5 Kf6 43. Ne6 Ke5 44. Nxg5 Kxd5 {offers a strong resistance.}) 40.
Nxb5 f3 $5 41. g3 $1 axb5 ({Or} 41... gxh3 42. Nd4 h2 43. Rb1) 42. hxg4 Rxg4
43. Rxb5 Ra4 44. Rxb7+ {White wins the rook ending.} Kf6 45. Ra7 Ke5 46. Rxg7
Ra3+ $5 47. Kc4 Ra2 48. Re7+ Kd6 49. Re6+ Kd7 50. Rf6 Rxf2 51. a6 Ke7 52. a7 $1
Ra2 53. Rxf3 Rxa7 54. Kd4 Ra1 55. Ke4 Re1+ 56. Re3 Rf1 57. Ke5 Rg1 58. g4 $1
Rf1 59. Re4 Rf2 60. d6+ Kd7 61. Rd4 Rf1 62. g5 {
Najdorf showed his skill in the endgame.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "3"]
[White "Pilnik, Herman"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "C14"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 O-O 8.
Nf3 c5 9. dxc5 Nc6 10. Bd3 f6 $5 ({Known is} 10... f5) 11. Qe2 fxe5 12. fxe5
Nxc5 13. O-O Bd7 14. Rf2 $6 (14. Qe3 $1 Be8 15. Nd4 {occupies the centre.})
14... Be8 $1 15. Nb5 $6 (15. h3 Bh5 $5 16. g4 Nxd3 17. cxd3 Bg6 18. d4 {
defends the centre pawns.}) 15... Bh5 $1 {Stahlberg has activated his bishop.}
16. Qe3 Bxf3 $1 17. gxf3 Nxd3 18. cxd3 d4 $1 19. Qe4 ({The pointe is} 19. Nxd4
Qc5 20. Nc2 Qxe3 21. Nxe3 Nxe5 {and Black wins a pawn (Czerniak).}) 19... Qg5+
20. Kh1 Rf4 $5 21. Rg1 $1 Rxe4 22. Rxg5 Rxe5 23. Rxe5 Nxe5 24. Nc7 $5 ({Or} 24.
Nxd4 Nxd3 25. Rd2 Nf4) 24... Rf8 $1 25. Nxe6 Rxf3 26. Rxf3 Nxf3 {
Black has an extra pawn in the knight ending.} 27. Nf4 g5 28. Ne2 Kf7 $1 29.
Kg2 Ne1+ 30. Kg3 Nxd3 31. Nxd4 Nxb2 32. Nb5 Nc4 33. Nxa7 Nd6 $1 {
The white knight has been imprisoned.} 34. a4 h5 35. Kf3 Ke6 36. a5 Kd7 37. Ke3
Kc7 38. Kd4 Kb8 39. a6 Kxa7 40. axb7 Kxb7 41. Ke5 h4 $1 {
Pilnik had a  hard time against the strong opposition.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "5"]
[White "Stahlberg, Gideon"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "D57"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nc3 h6 7. Bh4 Ne4 8. Bxe7
Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Rd8 12. c4 dxc4 13. Bxc4 Nc6 14. Qb2 $5
(14. Qc3 {occurred in Stahlberg - Piazzini, Buenos Aires 1939.}) 14... Bg4 15.
O-O Bxf3 16. gxf3 Qf6 17. Be2 Ne7 $2 (17... b6 {saves a pawn.}) 18. Rac1 $5 Nd5
19. Qxb7 $1 Rab8 20. Qc6 Qg5+ 21. Kh1 Rb2 22. Rg1 Qh5 $6 (22... Qh4 $1 23. Rg4
$1 Qf6 24. Qc4 h5 {keeps the initiative.}) 23. Rc2 $1 Rb6 24. Qa4 Rdb8 25. Qd7
Rb1 $5 26. Qg4 $1 Qxg4 27. fxg4 R1b2 28. Rgc1 a5 29. Kg2 a4 30. Bf3 Nf6 31.
Rxb2 Rxb2 32. Rxc7 Rxa2 33. h4 g5 34. hxg5 hxg5 35. Rc5 a3 36. Rxg5+ Kh7 37.
Ra5 Ra1 38. g5 Ne8 39. Bd5 Kg7 40. Ra7 Nd6 41. Rd7 Nb5 42. Bxf7 Nc3 43. f4 Kf8
44. g6 Kg7 45. f5 Kh6 46. Ra7 a2 47. f6 Ne4 48. Rxa2 Re1 49. Ra6 Rxe3 50. g7
Nxf6 51. g8=R $1 (51. g8=Q Re2+ 52. Kf3 Re3+ $1 53. Kf4 {
also wins for White, if he does not capture the desperado rook.}) 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "7"]
[White "Czerniak, Moshe"]
[Black "Puiggros, Guillermo"]
[Result "1-0"]
[ECO "C47"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d6 8.
O-O Qe7 9. f4 $5 (9. Ne2 {was played in Spielmann - Bogoljubow, München 1926.})
9... Ng4 $6 {Black makes a premature attack. He should castle.} 10. Qe1 $1 {
Czerniak protects square f2.} Bd7 $5 11. h3 Bc5+ 12. Kh1 h5 $2 {
The knight should retreat.} ({Czerniak suggests} 12... Nh6) 13. Na4 Bd4 $5 14.
c3 $1 Bf2 15. Rxf2 Qh4 16. Kg1 $1 Qg3 17. hxg4 hxg4 $5 18. Be3 $1 Ke7 {
He cannot deliver mate.} 19. Rd2 Qh2+ 20. Kf1 g3 21. Bg1 Qh4 22. Qe3 c5 23. b3
f5 24. exf5+ Kf8 25. Nxc5 $1 dxc5 26. Qxc5+ {Puiggros scored few points.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "7"]
[White "Pilnik, Herman"]
[Black "Frydman, Paulino"]
[Result "0-1"]
[ECO "C12"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4
g6 9. Nf3 c5 10. Bd3 Nxd2 11. Kxd2 Nc6 12. Rhb1 Qc7 13. Qf4 $5 ({Known is} 13.
Qh4) 13... f5 $1 {They play a sharp line of the French Defence.} 14. h4 $5 {
This became the standard answer.} cxd4 15. cxd4 Bd7 16. g4 $5 {
Pilnik wants to attack on two fronts.} O-O-O 17. gxf5 gxf5 18. Rg1 $5 Nb4 19.
a3 Nxd3 20. cxd3 Kb8 21. Ke3 $5 {The king finds a safe haven in the centre.}
Rc8 $1 {Frydman takes the initiative.} 22. Rg7 $6 (22. Rgc1 Qb6 {favours Black.
}) 22... Qc3 $1 {Black attacks.} 23. Rd1 Qb3 $6 {He could capture a  pawn.} 24.
Rd2 Bb5 25. Qg3 $1 Qxa3 26. Qg6 $1 {White counters.} Rhe8 27. Qxh6 $6 {
Too slow.} Rc2 $1 28. Rxc2 Qxd3+ 29. Kf4 Qxc2 30. Kg3 Qe4 31. Qe3 $5 (31. Qg6
f4+ $1 32. Kg4 Qxg6+ 33. Rxg6 Bd3 {leads to a better ending for Black.}) 31...
f4+ $2 {He gives away a pawn.} 32. Qxf4 Qxf4+ 33. Kxf4 Bd3 $6 34. h5 $6 (34.
Ng5 $1 b5 35. Ke3 Bf5 36. Nf7 {plays for a win.}) 34... a5 35. Ke3 Bc2 $6 {
The bishop becomes vulnerable for the king.} 36. Nd2 $2 (36. Ng5 $1 {(Czerniak)
} a4 37. Kd2 {brings a white advantage.}) 36... Bf5 $2 {Black loses time.} 37.
Nb3 b6 38. Kf4 $2 {A lot goes  wrong before the time control.} (38. Nc1 $1 {
defends well.}) 38... a4 39. Nd2 b5 40. h6 Rh8 41. Kg5 b4 $1 {
Frydman wins easily.} 42. Kh5 b3 43. Rg3 Bc2 44. f4 Rf8 45. Rg6 Rf5+ 46. Kg4
Rxf4+ $1 47. Kg5 Rg4+ $1 48. Kxg4 Bxg6 49. Kg5 Bf5 50. Kf6 b2 51. h7 Bxh7 52.
Kxe6 a3 53. Kf6 a2 {The standings after the first cycle were: Stahlberg 6/7,
Najdorf 5, Frydman, Michel and Guimard 4, Czerniak 21/2, Pilnik 11/2, Puiggros
1.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "8"]
[White "Pilnik, Herman"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "C41"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. Ng5 O-O 7. Bxf7+ {
Pilnik choses a sharp line.} Rxf7 8. Ne6 Qe8 9. Nxc7 Qd8 10. Nxa8 b5 11. dxe5
Nxe5 12. O-O $5 (12. f4 $6 Bg4 $1 {
was played in Barton - Eliascheff, Breslau 1912.}) 12... Bb7 13. f4 Ned7 14.
Nxb5 Bxa8 {White has three pawns for the small exchange. The difference will
become two pawns.} 15. Be3 Qb8 16. c4 a6 17. Nc3 Nxe4 $1 18. Nd5 $2 (18. Nxe4
Bxe4 19. Qe2 $1 {leads to an about level game.}) 18... Qxb2 19. Rb1 $2 {
White gives another pawn.} ({Preferable is} 19. Bd4 $1 Qb8 20. Re1) 19... Qxa2
20. Qd4 Bxd5 $1 {The black queen escapes from isolation easily.} 21. cxd5 Nec5
22. Ra1 Qe2 23. Rae1 Qh5 24. Qd2 Qf5 25. h3 h5 26. Qa2 Bh4 27. Bf2 Bxf2+ 28.
Rxf2 Nf6 29. Rf3 Kh7 30. Qc4 a5 31. Kh2 a4 32. Re2 Rb7 33. Re1 Rb3 34. Rxb3
axb3 35. Re2 Nxd5 {
The game went wrong when Pilnik did not take care of his queenside pawns.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "8"]
[White "Stahlberg, Gideon"]
[Black "Frydman, Paulino"]
[Result "1-0"]
[ECO "D57"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7
Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Rd8 12. c4 dxc4 13. Bxc4 Nc6 14. Qb2
Bg4 15. O-O Bxf3 16. gxf3 Na5 $1 (16... Qf6 {
was played in Stahlberg - Czerniak (round five).}) 17. Be2 c5 18. dxc5 Rac8 19.
Rac1 Rd5 (19... Rxc5 $5 20. Rxc5 Qxc5 {
will draw in Guimard - Letelier Martner, Mar del Plata 1953.}) 20. f4 Rcxc5 21.
Rxc5 Rxc5 {The chances are about equal.} 22. Bf3 b5 23. Rd1 Nc4 24. Qd4 Nb6 25.
Kh1 Rc4 26. Qb2 b4 27. Qb1 $5 Qc7 $2 ({Correct is} 27... g6) 28. Be2 $1 Rc3 ({
The pointe is} 28... Rc2 $2 29. Qxc2 $1 Qxc2 30. Rd8+ Kh7 31. Bd3+) 29. Qxb4 {
Stahlberg has won a pawn.} Rc1 30. Qd2 Qc6+ 31. Kg1 Rxd1+ 32. Qxd1 Nd5 33. Qb1
Nc3 34. Qb8+ Kh7 35. Bd3+ g6 36. Qxa7 Qe6 37. h3 $1 Nxa2 38. Qc7 {
Black loses on time. He faces the fatal threat of 39.Bc4.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "9"]
[White "Najdorf, Miguel"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "B15"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

{Najdorf wants a revenge for his previous loss.} 1. e4 c6 2. d4 d5 3. Nc3 dxe4
4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bc4 Bd6 7. Qe2+ Be7 ({Usual is} 7... Qe7) 8. Qh5
$5 {Najdorf makes a wild sortie.} g6 9. Qd1 O-O 10. Nf3 Nd7 11. O-O Nb6 12. Bb3
Re8 13. h3 Bf8 14. Re1 Bf5 $5 15. Rxe8 Qxe8 16. c4 Rd8 17. Be3 $1 {
Najdorf has an edge.} Be4 18. Qe2 Bg7 19. Rd1 Bxf3 $6 ({More solid is} 19... f5
$5) 20. Qxf3 f5 21. a4 $1 Qe4 $6 ({Najdorf prefers} 21... Nc8 $1) 22. Qxe4 $1
fxe4 23. a5 Nd7 $2 ({Right is} 23... Nc8 $1) 24. d5 $1 c5 25. Ba4 $1 Ne5 (25...
b6 $5 26. b4 Bf8 {(Najdorf) is refuted by} 27. Bf4 $1 cxb4 28. Bc7 Rc8 29. d6
$1) 26. Bxc5 $1 Nxc4 27. Be7 $1 Ra8 $6 ({Slightly better is} 27... Rb8 28. d6
Bf8 29. Rd4 Nxa5 {(Fine)} 30. b4 Nc6 31. Bxc6 bxc6 32. Bh4 {
but White wins anyway.}) 28. d6 Bf8 29. b3 Nb2 ({Or} 29... Nxa5 30. Bf6) 30.
Rc1 $1 Nxa4 (30... Bxe7 31. dxe7 Nxa4 32. Rd1 $1 {
(Najdorf) shows a chameleon echo of the game.}) 31. d7 $1 Bxe7 32. Rc8+ {
Najdorf and Stahlberg joined the lead.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "10"]
[White "Czerniak, Moshe"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "C41"]
[Annotator "JvR"]
[PlyCount "140"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. dxe5 Nxe4 5. Qd5 Nc5 6. Ng5 Be6 7. Nxe6 fxe6 8.
Qf3 Nbd7 9. exd6 Bxd6 10. Nc3 Qh4 {A premature sortie is made.} ({Preferable is
} 10... Rf8 $1 11. Qh5+ g6) 11. g3 Ne5 12. Qe2 Qe7 $5 (12... Qf6 {
was played in Steiner - Alekhine, Podebrady 1926.}) 13. Bg2 {
White has positional advantages.} O-O 14. O-O c6 15. Be3 Ned7 16. Rad1 Nb6 17.
Rfe1 Rae8 18. Ne4 Nxe4 19. Bxe4 Bb8 20. c4 Qf6 21. b3 Rf7 22. Rd3 g6 23. Red1
Bc7 24. h4 e5 25. c5 Nc8 26. Rd7 $1 Qe6 27. Rxf7 Kxf7 28. Bd3 Kg7 $2 (28... Ne7
$5 29. Bc4 Nd5 30. Qf3+ {only costs a pawn.}) 29. Bc4 $1 Qh3 30. Qf3 $1 Qf5 31.
Qxf5 gxf5 32. Bg5 $1 Ne7 33. Rd7 Bd8 34. Rxd8 $6 (34. Be2 $1 Kg6 35. Rd6+ Kg7
36. Bh5 {ends the game.}) 34... Rxd8 35. Bxe7 Rd1+ 36. Kg2 Rd2 37. a4 h6 38.
Kf3 Rc2 39. Ke3 Kg6 40. g4 $5 Rc3+ 41. Kd2 Rf3 42. gxf5+ $5 Kxf5 43. Ke2 Rc3
44. h5 Ke4 45. Bf8 Rc2+ 46. Ke1 Kf3 47. Bxh6 $2 {The tables turn.} (47. Bd3 $1
Rxf2 48. Be4+ $1 Kg3 {(Czerniak)} 49. Bg7 $1 {wins for White.}) 47... Rxf2 48.
b4 $6 {White makes a silly winning attempt.} (48. Bd2 e4 49. Kd1 e3 50. Bc3 {
does not lose (Czerniak).}) 48... e4 $1 49. Kd1 e3 50. Bg7 Rd2+ 51. Kc1 $1 Rh2
52. Bc3 $5 Rh1+ $5 53. Kc2 e2 54. Be6 $2 (54. h6 $1 e1=Q 55. Bxe1 Rxe1 56. h7
Rh1 57. Bd3 {seems to bring a white survival.}) 54... Rxh5 55. Bc8 Rh7 56. Be1
Ke3 57. a5 a6 58. Bf5 Rh8 59. Be6 Rd8 60. Bg4 Rg8 61. Be6 Rd8 62. Bg4 Rh8 63.
Bc3 Rh4 64. Be6 Kf2 65. Kd3 e1=Q 66. Bxe1+ Kxe1 67. Kc3 Rh8 68. Kd4 Kd2 69. Bf5
Rh4+ 70. Ke5 Rh5 {Najdorf showed a great fighting spirit in this game.
Stahlberg could not break the stubborn defence of Pilnik. So Najdorf took the
lead.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "10"]
[White "Michel, Paul"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "C14"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. Qg4 f5 8.
exf6 Nxf6 9. Qh4 Nc6 10. O-O-O Bd7 11. Nf3 O-O-O 12. Bb5 Kb8 $5 ({Known is} 
12... Rdf8) 13. Bxc6 Bxc6 {Black is stuck with the bad bishop.} 14. Ne5 Bd7 $5
15. Rhe1 Bc8 $5 16. Re3 (16. f4 $1 {prevents the next move.}) 16... g5 $1 17.
Qg3 (17. Qxg5 $6 Rhg8 18. Qh4 Rxg2 {allows a counter.}) 17... Rhg8 18. f3 h5
19. Na4 g4 20. Nc5 gxf3 21. Qxf3 Ng4 $2 {The knight moves away from d7.} 22.
Nc6+ $1 {Michel finds a wonderful decision.} bxc6 23. Rb3+ Ka8 24. Qc3 {
White threatens mate by Qa5, Ra3 and Qxa7#.} Nf6 {The knight comes too late.}
25. Qa5 $1 Rxg2 26. Ra3 a6 27. Nxa6 Qxa3 28. Qxa3 $5 Bxa6 29. Qxa6+ Kb8 30. Rd3
Rg1+ 31. Kd2 Rg2+ 32. Ke1 Nd7 33. a4 $5 Rdg8 34. a5 $2 {He hesitates.} (34.
Rb3+ $5 Nb6 35. Rxb6+ $1 {wins easily.}) 34... Rxh2 $2 (34... Rxc2 {(Czerniak)}
35. Rb3+ Nb6 36. Kd1 Rf2 $1 {
almost equalises, because White cannot gain a rook.}) 35. Rb3+ Nb6 36. Rxb6+ $1
(36. Rxb6+ cxb6 37. Qxb6+ Kc8 38. Qxc6+ Kb8 39. Qd6+ {wins a castle.}) 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "11"]
[White "Pilnik, Herman"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "C15"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

{Pilnik had survived in the previous round against Stahlberg. He held a rook
ending, despite two minus pawns. His morale must have improved.} 1. e4 e6 2. d4
d5 3. Nc3 Bb4 4. Nge2 dxe4 5. a3 Bxc3+ 6. Nxc3 Nc6 7. Bb5 Nge7 8. Bg5 $5 ({
The alternative is} 8. Nxe4) 8... f6 9. Be3 f5 $6 ({Usual will become} 9... O-O
$5 {(Pilnik - Rossetto).}) 10. Qh5+ g6 $5 11. Qh6 Kf7 12. O-O-O Nd5 $5 13. Nxd5
exd5 14. Bf4 Qf8 15. Qh3 h6 16. Qc3 Bd7 17. h4 Rc8 18. f3 Kg8 19. fxe4 fxe4 20.
Rdf1 {White attacks.} Nb4 $2 (20... Rh7 $1 21. Qb3 Be6 {defends well.}) 21.
axb4 $2 {Both players miss a 'petite combinaison'.} (21. Qg3 $1 Bxb5 22. Qxg6+
Qg7 23. Qe6+ Kh7 24. Be5 Bd7 $5 {(Czerniak)} 25. Rf7 $1 {wins for White.})
21... Bxb5 22. Rf2 Qe7 $5 23. Be5 $5 Rh7 24. Qg3 g5 $2 (24... Rg7 $1 25. Bxg7
Kxg7 {offers more resistance.}) 25. Rf6 h5 26. hxg5 Be2 27. Qf2 {
Pilnik will conquer material.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "11"]
[White "Stahlberg, Gideon"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "A56"]
[Annotator "JvR"]
[PlyCount "93"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. g3 Be7 6. Bg2 O-O 7. e4 Ne8 8. Nge2 f5
9. f4 $5 {White controls more territory.} ({Usual is} 9. O-O) 9... exf4 10.
Nxf4 Bf6 11. O-O Bd4+ 12. Kh1 Nf6 13. exf5 Bxf5 14. Nb5 Be5 15. Ne6 $1 Bxe6 16.
dxe6 Nc6 17. Bf4 Qe7 {Black threatens the advanced pawn.} 18. Bxe5 dxe5 19. Qd6
$1 Rfe8 $1 20. Rad1 Nd4 $6 (20... e4 $1 21. Rde1 $1 Qxd6 22. Nxd6 Rxe6 23. Nxb7
Rae8 $1 24. Nxc5 Re5 {offers more resistance.}) 21. Qxe5 Nxb5 22. cxb5 Qxe6 23.
Qxc5 {Black has lost a pawn.} b6 24. Qc6 Rab8 ({Not} 24... Qxa2 $4 25. Rxf6 $1
gxf6 26. Bd5+) 25. b3 Re7 26. Rd2 Rbe8 27. Qxe6+ Rxe6 28. Bc6 $1 {
Stahlberg has advantages in the endgame.} Re2 29. Rf2 Rxf2 30. Rxf2 Rd8 31. Kg2
Kf7 32. Rc2 Ke7 33. Bf3 h6 $6 {He creates  a hole on g6.} 34. Kf2 Rd7 35. Ke3
Rd6 36. Kf4 Rd7 37. h4 Rd3 38. Rc7+ Rd7 39. Rc3 Kf7 40. g4 $1 Ke7 41. g5 hxg5+
42. hxg5 Nh7 43. Be4 Nf8 {Black controls g6.} 44. Bf5 Rb7 45. Ke5 {Zugzwang.}
Kf7 46. Kd6 $1 Re7 47. g6+ $1 {Najdorf defeated Puiggros and kept the lead.} (
47. g6+ Kf6 48. Rf3 $1 Re1 49. Bc2+ {wins easily.}) 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "12"]
[White "Guimard, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "D94"]
[Annotator "JvR"]
[PlyCount "102"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 g6 5. cxd5 cxd5 6. Nc3 Bg7 7. Bb5+ Nbd7 8.
Qb3 e6 9. O-O O-O 10. Bd3 $5 (10. Bd2 {
occurred in Soultanbeieff - Flohr, Folkestone 1933.}) 10... Nb8 $5 11. Ne5 Nfd7
12. f4 Nxe5 13. fxe5 a6 14. Bd2 Nc6 15. Rf3 b5 16. Raf1 Bd7 17. Ne2 a5 18. Qd1
b4 19. Qe1 f6 20. exf6 Rxf6 21. Rxf6 Bxf6 22. Qf2 Kg7 23. Nf4 Bh4 24. g3 Bf6
25. Qf3 Qe7 26. h4 Rf8 27. Kg2 Qe8 28. Be1 Bd8 29. Bb5 Kg8 30. Qd1 Ne7 31. Bxd7
Qxd7 32. Qd3 Bc7 33. a3 Bd6 34. axb4 axb4 35. Qa6 Nf5 36. Bf2 Rc8 37. Qd3 Bxf4
38. exf4 Qc6 39. Qe2 Kf7 40. Re1 $6 {Guimard loses a tempo.} (40. Qe5 $1 h5 41.
Ra1 {gives sufficient counter-play.}) 40... h5 $1 {
Najdorf increases the restraint.} 41. Ra1 Qc2 42. Ra7+ Ne7 43. Qe5 Qe4+ $1 44.
Qxe4 dxe4 45. Be1 $2 (45. Rb7 $1 Rc4 46. Be1 Rc2+ 47. Kh3 $1 Kf6 48. Bxb4 Nd5
49. Ba5 e3 50. g4 $1 {(White threatens mate)} hxg4+ 51. Kxg4 Rg2+ 52. Kf3 Rf2+
53. Ke4 Rxf4+ 54. Kd3 Rf2 55. Ke4 {brings survival.}) 45... Rc2+ 46. Kf1 (46.
Kh3 $5 Rxb2 47. Rb7 e3 $1 48. Bxb4 $5 e2 49. Rxe7+ Kf6 50. Rc7 Rxb4 51. Rc1
Rxd4 52. Re1 Rd2 $1 53. Kg2 Kf5 54. Kf3 Rd3+ $1 55. Kf2 Kg4 {
leads to a won rook ending.}) 46... Kf6 $1 {A mate attack begins.} 47. Bxb4 Nd5
48. Bd6 Kf5 49. b4 Kg4 50. Ke1 Kf3 51. Ra3+ Ne3 {Najdorf widened his lead to
one point. It was reduced to half-a-point in the penultimate round.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1941.??.??"]
[Round "14"]
[White "Guimard, Carlos"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D52"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1941.10.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nbd7 5. Bg5 c6 6. e3 Qa5 7. Nd2 dxc4 8.
Bxf6 Nxf6 9. Nxc4 Qc7 10. g3 Nd5 $5 {
Stahlberg delivers a novelty in the Cambridge Springs.} ({Theory is} 10... Be7)
11. Bg2 Nxc3 12. bxc3 Be7 13. O-O O-O 14. a4 Bd7 15. Qb3 Rab8 16. Ne5 Be8 $5
17. Rfb1 $5 Kh8 18. a5 f6 19. Nd3 Bg6 {Black has activated a bishop.} 20. Rd1
e5 21. a6 b6 22. Nb4 Be8 $5 23. Qc4 Rc8 24. d5 c5 25. d6 $6 ({Preferable is} 
25. Nc6 {(Gilliam)} Bd6 26. Rab1) 25... Bxd6 26. Nd5 Bf7 $1 {
Stahlberg gains an advantage by a pin.} 27. Nxc7 $6 {
White continues the risky adventure.} Bxc4 28. Na8 $5 Bb8 29. Rd7 $5 Rcd8 $5
30. Nxb6 $1 axb6 31. a7 Bxa7 32. Raxa7 {Black has won a pawn.} h6 $5 33. Be4
Rxd7 34. Rxd7 Rb8 35. Bg6 $5 Bg8 36. Rc7 Bh7 37. Bf7 $2 (37. Bxh7 Kxh7 38. Kg2
Kg6 39. Kf3 Rd8 40. Rc6 {gives drawing chances in the rook ending.}) 37... Be4
$1 38. Kf1 Bf3 $1 39. Ke1 Kh7 40. Kd2 Rd8+ 41. Kc2 Be4+ 42. Kb3 Rd2 43. h4 h5
$5 {Najdorf drew with Michel. The final standings became: Stahlberg and
Najdorf 11/14 (425 pesos), Frydman 8 (250 pesos), Michel 71/2 (150 pesos),
Guimard 6 (60 pesos), Pilnik 51/2 (55 pesos), Czerniak 5 (50 pesos), Puiggros
2 (20 pesos). One pesos costed about $ 0.25.} 0-1

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "1"]
[White "Pilnik, Herman"]
[Black "Graf, Sonja"]
[Result "1-0"]
[ECO "C47"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

{The fifth Mar del Plata tournament was played from 11 until 29 iii 1942.
Eliskases and Engels did not partake, because they had moved to Brazil. New
contenders were Pelikan and Rossetto. Eighteen people participated.} 1. e4 e5
2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d6 8. O-O h6
9. a3 $5 Bxc3 10. bxc3 O-O 11. f4 {Pilnik takes the initiative on the kingside.
} Re8 12. Qf3 Bd7 $6 ({More active is} 12... Bg4 13. Qg3 Qe7) 13. c4 $5 Rb8 14.
Bd2 Qc8 $2 (14... c5 $1 {makes a useful defensive move.}) 15. Rae1 c5 16. Bc3
$1 {The attack becomes decisive quickly.} Nh7 $5 17. Qg3 $1 g6 18. f5 $1 g5 19.
Qh3 $1 f6 {Black cannot defend pawn h6.} 20. Qxh6 Rf8 21. e5 $1 dxe5 22. Rxe5
$1 {Pilnik performs for the public.} Rf7 ({The pointe is} 22... fxe5 23. f6 $1
Nxf6 24. Bh7+ $1 Nxh7 25. Qg6+ Kh8 26. Bxe5+) 23. Qg6+ Rg7 24. Re7 $1 Rxg6 25.
fxg6 Nf8 26. Bxf6 Ne6 27. Rh7 {The event would become a race between Najdorf,
Pilnik and Stahlberg. Only Pilnik won. The others drew.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "2"]
[White "Guimard, Carlos"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D69"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Bd3
dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. dxe5 Nxe5 14. Nxe5
Qxe5 {Well-known moves are made.} 15. f4 Qf6 16. e4 Be6 17. Bd3 Qd4+ 18. Kh1
Rad8 19. Qa1 $5 (19. Qb1 {drew in Tartakower - Maroczy, London 1932.}) 19... f6
20. Bc2 $5 Kh8 21. Rd3 Qc5 22. Rc3 $5 Qe7 23. Qe1 Rd7 24. a3 Rfd8 25. Qh4 Bg8
26. h3 f5 $5 27. Qxe7 Rxe7 28. e5 g6 29. Rf2 Red7 30. g4 $1 fxg4 $6 {
Pilnik starts a silly adventure.} (30... Be6 $1 31. gxf5 Bxf5 32. Bxf5 gxf5 {
levels the game.}) 31. hxg4 Rd4 $6 32. Kh2 $1 g5 $2 33. f5 $1 Rxg4 34. e6 $1
Rf4 35. Rxf4 gxf4 36. Kh3 $5 Kg7 37. Kg4 Kf6 38. Rh3 $5 Ke5 39. Rh6 c5 ({Or} 
39... Rf8 40. Rh2 Rd8 41. Re2+ Kf6 42. Kxf4) 40. Ba4 $1 b5 $6 41. Bxb5 Kd6 42.
Kxf4 {
The top three after three rounds became: Stahlberg and Pilnik 2, Najdorf 11/2.}
1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "4"]
[White "Espina, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E17"]
[Annotator "JvR"]
[PlyCount "156"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. b3 O-O 7. Bb2 d5 8. d4
Nbd7 9. Nbd2 c5 10. e3 Rc8 11. Ne5 Qc7 $5 12. f4 dxc4 13. bxc4 Bxg2 14. Kxg2
Qb7+ 15. Qf3 Qxf3+ 16. Nexf3 cxd4 17. exd4 {
The exchanges have led to an equal position.} Rfd8 18. Rfe1 Bb4 19. Re2 Nb8 20.
Rc1 Nc6 21. Nb3 a5 22. a3 Bf8 23. Ne5 a4 24. Nxc6 Rxc6 25. Nd2 {
The hanging pawns are well protected.} Rdc8 26. Rb1 $6 (26. Rce1 $1 {forestalls
} Ne8 $2 {due to} 27. d5 $1) 26... Ne8 $1 {Black threatens to gain the c-pawn.}
27. f5 $1 exf5 28. d5 Rg6 29. Bd4 $1 Bxa3 30. Bxb6 Nf6 31. Nf3 Nd7 $5 32. Bf2
Bf8 33. Rb7 Nc5 34. Bxc5 Bxc5 35. Rb5 h6 36. Ne5 Ra6 37. Nc6 $5 ({Preferable is
} 37. Nd3 Bd4 38. c5 a3 39. Ra2) 37... Bf8 $1 38. c5 a3 39. Ra2 Ra4 40. Kf3 g5
41. Ke3 Rc4 42. Rxa3 Rxc5 43. Rab3 $1 Re8+ 44. Kd3 f4 $5 45. gxf4 gxf4 46. Rxc5
Bxc5 47. Kc4 $6 (47. Rb8 $1 Rxb8 48. Nxb8 f3 49. Nd7 {draws.}) 47... Bd6 48.
Rf3 Kg7 49. Nd4 Kf6 50. Nb5 $6 Be5 $2 (50... Rc8+ $1 51. Kd3 Be5 {
wins for Black.}) 51. d6 $1 Rb8 52. Rd3 $2 {
White makes the last mistake in the endgame.} (52. Kc5 $1 Ke6 53. Kc6 Rc8+ 54.
Nc7+ {draws.}) 52... Ke6 $1 53. d7 $6 Rd8 54. Nd4+ Bxd4 55. Rxd4 Rxd7 56. Rxf4
Ke5 57. Rf1 {
White cannot save the game, because he cannot activate his king soon enough.} (
57. Rh4 $5 f5 $1 58. Rxh6 f4 {leads to a theoretical win.}) 57... f5 58. Re1+
Kf4 59. Rf1+ Kg5 60. Rg1+ Kf6 61. Rf1 Rd2 62. h3 Rh2 63. Rf3 (63. Kd3 $5 Rxh3+
64. Ke2 h5 65. Kf2 Kg5 66. Kg2 Ra3 {brings another known win.}) 63... Ke5 64.
Kd3 f4 65. h4 Kf5 66. Rf1 Kg4 67. Rg1+ Kf3 68. Rf1+ Kg3 69. Rg1+ Rg2 70. Re1
Rh2 71. Ke4 f3 72. Ke3 Ra2 73. Rg1+ Kh2 74. Rg6 f2 75. Rf6 Kg2 76. Rg6+ Kf1 77.
Rb6 Ra3+ 78. Kd2 Kg2 {Top trio: Stahlberg 3, Pilnik and Najdorf 21/2.} 0-1

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "5"]
[White "Najdorf, Miguel"]
[Black "Corte, Cesar"]
[Result "1-0"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. O-O Nbd7 6. b3 Bd6 7. Bb2 Qe7 8. Ne5
O-O 9. Nd2 cxd4 $5 10. exd4 Ba3 $5 11. Bxa3 Qxa3 12. Re1 b6 13. Re3 Ba6 14. c4
$1 Rfd8 $2 ({Correct is} 14... Rac8) 15. b4 $2 ({Better is} 15. Nc6 $1 Re8 16.
b4 $1 {and White has imprisoned a queen.}) 15... Qb2 $2 (15... Qxb4 $1 16. Nc6
Qd6 17. Nxd8 Rxd8 18. cxd5 Bxd3 19. dxe6 fxe6 20. Rxd3 Ne5 $1 {defends well.})
16. Nc6 $1 {The black queen is in troubles.} Bb7 (16... Re8 17. Rb1 Qxa2 18.
Ra1 Qb2 19. Rxa6 {gains a piece.}) 17. Rb1 Qxb1 ({Or} 17... Qxa2 18. Nxd8 Rxd8
19. Qc1 Qa4 20. b5 {and White wins.}) 18. Ne7+ Kf8 19. Bxb1 Kxe7 20. c5 a5 21.
a3 Bc6 22. cxb6 axb4 23. axb4 Nxb6 24. Rc3 Rdc8 25. f3 Ba4 26. Qc1 Rxc3 27.
Qxc3 Rc8 28. Qa3 Nfd7 29. Bd3 g6 30. Kf2 Kf6 31. f4 Bc2 32. Ke3 Bxd3 33. Kxd3
Kg7 34. Nb3 $6 {The game ended, when Black got a new chance.} (34. Nb3 Ra8 $1 {
deactivates the white queen.}) (34. b5 $1 {keeps the position open.}) 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "5"]
[White "Pilnik, Herman"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "C14"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. Bxf6 Bxf6 6. e5 Be7 7. Qg4 O-O 8.
Bd3 c5 9. dxc5 Nc6 10. f4 f5 11. Qh3 b6 $5 (11... Bxc5 {
happened in Tarrasch - Walbrodt, Nürnberg 1894.}) 12. O-O-O $2 {
Wild complications follow.} (12. cxb6 $5 Qxb6 13. Nge2 Qxb2 {
brings a black attack.}) 12... bxc5 13. g4 $5 c4 $1 14. Bxc4 $5 {
Retreat accepts a loss.} fxg4 15. Qg2 ({The pointe is} 15. Qxg4 Rxf4 $1) 15...
Na5 $2 ({Right is} 15... Rxf4 16. Rxd5 $5 Qb6) 16. Rxd5 $1 exd5 17. Bxd5+ Kh8
18. Bxa8 {White is back in the game.} Ba6 $2 (18... Nc4 $1 19. Bd5 Ne3 {
keeps an edge.}) 19. Bd5 Qb6 $2 (19... Rxf4 {makes a natural move.}) 20. Nge2
Rb8 21. b3 Rc8 22. Qe4 Nb7 23. Na4 Qc7 24. c4 Nc5 25. Nxc5 Bxc5 26. Rd1 Rf8 27.
Kb1 Bc8 28. e6 a5 29. f5 Be7 30. Rg1 a4 31. Rxg4 axb3 32. axb3 Bf6 33. Nf4 Qe7
34. Qg2 g5 35. fxg6 Bg7 36. gxh7 Rxf4 37. Rxf4 Qa3 38. Qa2 Qb4 39. Rf1 Qc3 40.
Rd1 Qe5 41. Rg1 Qd4 42. Rc1 Bxe6 43. Bxe6 Qe4+ 44. Qc2 Qxe6 45. Rg1 Qe3 46.
Rxg7 $5 Qe1+ 47. Qc1 Qe4+ 48. Ka2 Kxg7 49. Qb2+ {
Top three: Pilnik and Najdorf 31/2, Stahlberg 3.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "6"]
[White "Stahlberg, Gideon"]
[Black "Graf, Sonja"]
[Result "1-0"]
[ECO "D38"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Bb4+ 5. Nc3 h6 6. Bxf6 Qxf6 7. Qa4+ Nc6 8.
Ne5 O-O 9. Nxc6 Bxc3+ 10. bxc3 Bd7 11. cxd5 exd5 12. e3 Bxc6 $5 13. Bb5 Be8 $5
14. O-O a6 15. Bxe8 Rfxe8 16. c4 dxc4 17. Qxc4 Rac8 18. Rab1 b5 $6 ({
The semi-sacrifice} 18... c5 $1 19. Rxb7 cxd4 20. Qxd4 Qxd4 21. exd4 Re2 {
draws quickly.}) 19. Qc5 Qe6 20. Rb2 Red8 21. Rc1 {
White pressures on the weakness c7.} Rd5 22. Qc6 Rd6 23. Qc3 Rd5 24. Qc6 Rd6
25. Qf3 Rd5 26. Rbc2 c6 27. Qe2 a5 28. h3 a4 29. Qe1 f5 $5 30. Qa5 f4 $5 31.
Rxc6 $1 Rxc6 32. Qa8+ Kh7 $2 (32... Rd8 $1 33. Qxd8+ Kh7 34. Rxc6 Qxc6 35. Qe7
b4 $1 36. Qxb4 Qc1+ 37. Kh2 fxe3 38. fxe3 Qc7+ 39. Kg1 Qc1+ 40. Kf2 Qc2+ 41.
Kg3 Qc7+ $1 {probably draws.}) 33. Qxc6 Qe4 34. Qc2 Qxc2 35. Rxc2 fxe3 36. fxe3
{White has connected passed pawns.} Kg6 $6 (36... b4 $1 {
brings the last chance.}) 37. Kf2 Kf5 38. Kf3 Kf6 39. Ke4 Rd6 40. Kd3 Rb6 41.
e4 b4 42. Rb2 b3 43. axb3 a3 44. Rf2+ $1 {
Top three after six rounds: Najdorf 41/2, Stahlberg and Pilnik 4.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "8"]
[White "Espina, Carlos"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "D23"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ Nbd7 5. Nc3 a6 6. e4 e6 7. Bxc4 Rb8 8.
Qc2 $5 b5 9. Be2 Bb7 10. a3 (10. e5 $1 Nd5 11. O-O {
will be played in Ljubojevic - Van Wely, Monte Carlo 2000.}) 10... c5 $1 11.
dxc5 Bxc5 12. O-O $5 O-O $5 13. Bg5 Qc7 $1 14. Rac1 Rbc8 15. Qb1 $5 Qb8 $1 16.
b4 Bd6 $1 {Black has taken the initiative.} 17. Bd3 $2 ({Better is} 17. Rfd1
Rfd8 18. Bh4) 17... Ne5 $1 18. Nxe5 (18. h3 Nxf3+ 19. gxf3 Bf4 {
leads to a great positional advantage for Black.}) 18... Bxe5 19. Ne2 $5 Bxh2+
{He has gained a pawn.} 20. Kh1 Rxc1 21. Qxc1 Bc7 $6 (21... Nxe4 $1 22. Bxe4
Bxe4 23. f4 f6 {wins more quickly.}) 22. Bxf6 gxf6 23. f4 Kh8 24. Qc3 Qd8 25.
Rf3 Rg8 26. Rh3 Rg6 27. Bc2 Bb8 $5 28. Qc5 $5 f5 $1 29. Ng3 $6 Bxf4 30. exf5
Rxg3 31. Rxg3 Qh4+ $1 32. Kg1 ({The pointe is} 32. Rh3 Qxh3+ {and mate.}) 32...
Qxg3 33. Qd4+ Be5 {The top three: Pilnik 6, Najdorf and Stahlberg 51/2.} 0-1

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "9"]
[White "Najdorf, Miguel"]
[Black "Pelikan, Jorge"]
[Result "1-0"]
[ECO "E65"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

{Jiri Pelikan was a Czech player who had to stay in Buenos Aires. He changed
his first name into Jorge.} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6
6. O-O Na6 $5 {Pelikan makes  a new move in the King's Indian Defence.} 7. Nc3
c5 8. h3 Bd7 9. Be3 Qc8 10. Kh2 $5 cxd4 11. Nxd4 Qxc4 $5 12. Rc1 {
White has compensation for the pawn.} Qb4 13. Qd2 Rfe8 $6 ({Preferable is} 
13... Rfb8 $1 14. Rfd1 Qa5) 14. a3 $1 Qa5 $1 (14... Qb6 $2 15. Nf5 $1 Qb3 16.
Nxg7 Kxg7 17. Nd5 Bc6 18. Bh6+ {brings a winning white attack.}) 15. Bxb7 Qh5
$1 16. Bxa6 Qxh3+ 17. Kg1 Bc6 18. Nf3 Nh5 $2 (18... Ng4 $1 19. Rfd1 Be5 20. Bf4
Bxf4 21. Qxf4 e5 22. Qxf7+ $1 Kh8 $1 23. Nd5 Rf8 24. Qe7 $1 Bxd5 25. Qh4 {
leads to great complications.}) 19. Nd5 $2 {Chess remains a difficult game.} (
19. Rfd1 $1 Nxg3 20. fxg3 Qxg3+ 21. Kf1 Bd7 22. Bf2 {wins for White.}) 19...
Nxg3 $1 20. fxg3 Qxg3+ 21. Kh1 Qh3+ 22. Nh2 Bxd5+ 23. Qxd5 Qxe3 24. Qxf7+ Kh8
25. b3 Rf8 26. Qd5 Be5 27. Qg2 Qh6 $5 {Black could capture another pawn.} 28.
Bc4 $5 Rac8 $5 (28... g5 $1 {revives the charge.}) 29. Rcd1 Qh4 30. Rf3 $5 Rxf3
31. exf3 Rf8 32. Kg1 Rf5 $5 33. Ng4 $1 Rg5 $5 34. Be6 h5 $2 ({Correct is} 34...
Kg7) 35. f4 $1 hxg4 ({The pointe is} 35... Bxf4 36. Qa8+ Kg7 37. Qg8#) 36. fxg5
Qxg5 37. Qxg4 {Top trio: Pilnik 7, Najdorf and Stahlberg 61/2.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "10"]
[White "Pelikan, Jorge"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "A03"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. Be2 Bg7 5. O-O O-O 6. Qe1 c5 7. d3 Nc6 8. Bd1 (
{Pelikan played the immediate} 8. Qh4 {in other games.}) 8... b6 9. Qh4 c4 $5
10. dxc4 dxc4 11. Nc3 Bf5 {Stahlberg has a positional edge.} 12. Re1 $6 (12.
Bd2 $1 {develops the queen's bishop.}) 12... h6 13. Ne5 $2 Nxe5 14. fxe5 Nd7 $1
15. Qxc4 Nxe5 {
Pilnik has no success with his innovative approach. Black controls the centre.}
16. Qf4 Rc8 17. e4 Be6 18. Be2 Nc4 $1 {
White cannot develop his queenside in a proper way.} 19. Rd1 Qe8 20. Nd5 $2 {
White breaks the restraint by force. It costs a pawn.} Nxb2 21. Bxb2 Bxb2 22.
Rab1 Bxd5 $2 (22... Rxc2 $1 23. Bd3 Bd4+ 24. Kh1 Rf2 {wins easily.}) 23. Rxd5
$2 (23. exd5 $1 Bg7 24. Bb5 Qd8 25. c4 {offers more resistance.}) 23... Bd4+
24. Kh1 Qa4 25. Rf1 Bg7 $5 26. Bd3 $6 e6 27. Rd6 Rc5 28. Qg4 Qe8 {
Top trio: Pilnik 8/10, Najdorf and Stahlberg 71/2.} 0-1

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "12"]
[White "Michel, Paul"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "C96"]
[Annotator "JvR"]
[PlyCount "93"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
Na5 9. Bc2 c5 10. d4 Qc7 11. h3 cxd4 12. cxd4 O-O 13. Nc3 Bb7 14. a3 Rac8 $5 (
14... Rfe8 {was played in Ragozin - Levenfish, Leningrad 1939.}) 15. Bd3 Nc4
16. b3 exd4 17. Nxd4 Ne5 18. Bb2 Nxd3 $2 {Pilnik makes a passive move.} 19.
Qxd3 Nd7 $5 20. Nd5 $5 Bxd5 21. Nf5 $1 Bf6 22. Bxf6 Nxf6 23. exd5 Qc2 $5 24.
Rad1 Qxd3 25. Rxd3 {Michel has gained a positional edge.} Rcd8 26. Rc1 g6 27.
Ne3 Nd7 $5 28. Rc6 $1 {White offers an exchange.} Ne5 $5 {
Pilnik accepts the sacrifice.} (28... Nc5 $6 29. Rd1 a5 30. b4 axb4 31. axb4
Na4 {leads to black passivity.}) 29. Rdc3 $1 Nxc6 30. dxc6 Rc8 $6 {
He misses the best opportunity.} (30... Rde8 $1 31. c7 Rxe3 $1 32. Rxe3 Rc8 33.
Re7 Kg7 34. Rd7 d5 $1 {brings excellent drawing chances.}) 31. Nd5 $1 {
Michel manoeuvres brilliantly.} Rfe8 32. c7 f5 33. Kf1 Kf7 34. Nb6 Rg8 $2 {
He loses time.} (34... d5 $1 35. b4 d4 36. Nxc8 Rxc8 37. Rc6 Ke7 38. Ke2 Kd7
39. Rxa6 Kxc7 {fights for survival in a rook ending.}) 35. Ke2 Ke6 36. Ke3 g5
37. g3 h5 38. f3 g4 39. hxg4 hxg4 40. f4 a5 41. b4 a4 42. Kd4 Rh8 43. Nxc8 Rxc8
44. Rc6 Kd7 45. Kd5 Ke7 ({The pointe is} 45... Rxc7 46. Rxc7+ Kxc7 47. Ke6 $1
Kc6 48. Kxf5) 46. Rc1 Kd7 47. Rc2 $1 {Michel has achieved zugzwang. Top three;
Najdorf 91/2, Stahlberg 81/2, Pilnik 8. Miguel had a clear lead.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "13"]
[White "Pilnik, Herman"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "B15"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 O-O 8.
Qh5 g6 9. Qh4 $5 c5 10. Ne2 Nc6 11. Bh6 f5 $5 12. Bg5 $1 Qb6 13. O-O cxd4 14.
cxd4 Re8 $6 ({Preferable is} 14... Nb4 $1 15. Nc3 $1 Be6 16. Bf6 Rfc8 {
and the chances are almost equal.}) 15. Bc4 h5 $5 16. Rae1 $6 (16. Bf6 $1 Na5
17. Bd3 $1 {develops the bishops to strong squares.}) 16... Re4 $1 17. Nf4 Qxd4
18. Rxe4 fxe4 $2 (18... Qxe4 $1 19. Nxg6 $1 Qxh4 20. Nxh4 Be6 {
defends properly.}) 19. Nxh5 $1 gxh5 20. Bf6 Qc5 21. Rd1 $1 Kf8 $2 {
Najdorf allows decisive tactics.} (21... e3 $1 22. b4 $1 Qf5 23. Rxd6 Qxf2+ 24.
Qxf2 exf2+ 25. Kxf2 Be6 {only favours White.}) 22. b4 $1 Nxb4 23. Qg3 $3 {
A brilliancy forces the win.} Bg4 ({The pointe is} 23... Bxg3 24. Rd8#) 24.
Rxd6 Nd3 25. Bxd3 Qc1+ 26. Bf1 Rc8 27. h3 $1 Qxf1+ $1 28. Kh2 $1 Qc1 29. hxg4
hxg4 30. Qxg4 Qh6+ 31. Kg3 Rc3+ 32. f3 {Pilnik produced a great attacking
achievement. The top three became: Najdorf 91/2, Pilnik and Stahlberg 9.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "15"]
[White "Guimard, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "C27"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Be7 6. Nf3 Nc6 7. Nxe5 ({
The old masters played} 7. d3) 7... Nxe5 8. Qxe5 O-O 9. Nd5 Re8 10. O-O Bf8 11.
Qf4 c6 12. Ne3 Qe7 $5 (12... Qa5 {
occurred in Alekhine - Euwe, Netherlands 1935.}) 13. d3 Qe5 14. Qf3 $1 {
Guimard has an edge.} b6 15. Bd2 Bb7 (15... Qxb2 $5 16. Bb4 Qf6 17. Qxf6 gxf6 {
is alright.}) 16. Bc3 Qg5 17. a4 c5 $2 18. Qh3 $2 (18. Bxf7+ $1 Kh8 19. Bd5 {
wins a pawn.}) 18... Qg6 19. Rae1 Bc6 20. Ng4 c4 $5 21. Ba2 $5 ({
The alternative is} 21. dxc4 Ne4 22. Ne5 Qg5 23. f4 Bc5+ 24. Kh1 Qf6) 21... f6
$5 22. Re3 Nf5 $5 23. Bxc4+ Kh8 $5 24. Rxe8 Rxe8 25. Ne3 $2 (25. d4 Be4 26. Bb3
{keeps a plus.}) 25... Nxe3 26. fxe3 Rxe3 $1 27. Bf7 Qg5 28. Bd2 Rxh3 $1 29.
Bxg5 Bc5+ $1 30. d4 $5 Bxd4+ 31. Kh1 fxg5 32. Be6 Rf3 $1 33. gxf3 dxe6 {
Black has a  decisive material advantage.} 34. c3 Bf6 35. Kg1 Kg8 36. a5 bxa5
37. Kf2 a4 38. Rd1 a3 39. bxa3 Bxc3 40. Rd6 Bd5 {The top three won in round 14
and 15. So the standings became: Najdorf 111/2. Stahlberg and Pilnik 11.} 0-1

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "16"]
[White "Bolbochan, Jacobo"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "B14"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. e4 d5 2. exd5 Nf6 3. c4 c6 4. d4 cxd5 5. Nc3 e6 6. Bg5 Be7 7. Nf3 O-O 8. c5
h6 $5 ({Theory in the Panov is} 8... b6) 9. Bf4 b6 10. b4 Ne4 11. Nxe4 dxe4 12.
Ne5 Bb7 13. Bc4 Bf6 $5 14. O-O Bd5 15. Qb3 Bxe5 16. Bxe5 Nc6 17. Bxd5 $6 ({
Preferable is} 17. Rfd1 $1) 17... Qxd5 $1 18. Qxd5 exd5 19. cxb6 $2 {
White weakens his a-pawn.} (19. Bd6 $1 Rfd8 20. Bc7 Rdc8 21. cxb6 axb6 22. Bxb6
Nxb4 23. a4 {gives counter-play.}) 19... axb6 20. a4 $5 Rfc8 $1 (20... Nxb4 $5
21. Bd6 Nc2 22. Bxf8 Nxa1 23. Bxg7 Kxg7 24. Rxa1 Ra5 {brings less advantage.})
21. b5 Na5 $5 22. f3 $5 f6 $1 23. Bd6 Nb3 $1 24. Rae1 $6 (24. a5 $5 Nxa1 25.
axb6 Re8 26. b7 Rad8 27. b8=Q Rxb8 28. Bxb8 Rxb8 29. Rxa1 Rxb5 {
leads to an extra black pawn in the rook ending.}) 24... exf3 25. Rxf3 Nxd4 26.
Rd3 Rxa4 27. h3 Kh7 28. Re7 $6 Ra1+ 29. Kh2 Nf5 $1 30. Rxd5 Nxe7 31. Bxe7 Rb1
32. Kg3 Rc3+ 33. Kh2 Rcb3 34. Rd7 Kg8 {
Stahlberg played a  fine positional game.} 0-1

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "16"]
[White "Najdorf, Miguel"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "41"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O d5 6. b3 Be7 7. Bb2 O-O 8. Nbd2
c5 9. Ne5 Nc6 10. f4 {White attacks in the style of Pillsbury.} Rc8 $5 11. a3
cxd4 12. exd4 Qc7 13. c3 Ne8 $6 (13... Nxe5 $1 14. fxe5 Ne4 {
counters in the centre.}) 14. Qe2 Bd6 $5 15. Rae1 Qe7 $5 {Rossetto has no plan.
} 16. b4 a5 $6 {The action takes place elsewhere.} 17. Rf3 $6 (17. f5 $1 {
directs the attack on e6.}) 17... Nd8 $2 {He allows elementary tactics.} (17...
g6 $1 18. Rh3 Ng7 {defends the kingside.}) 18. Bxh7+ $1 Kh8 ({The pointe is} 
18... Kxh7 19. Rh3+ Kg8 20. Qh5) 19. Rh3 Nf6 20. Ndf3 Nxh7 21. Ng5 {Najdorf kep
t the lead of half-a-point on his two contenders at the end of the penultimate
round.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "17"]
[White "Maderna, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "C02"]
[Annotator "JvR"]
[PlyCount "92"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. c3 e6 3. d4 d5 4. e5 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. O-O
Nxd4 9. Nc3 $5 ({Usual is} 9. Nxd4 Qxd4 10. Qe2) 9... Nxf3+ $1 10. Qxf3 Ne7 11.
Qg3 Bc6 12. a3 a6 $5 13. b4 Ng6 14. Ne2 Be7 15. Be3 Qd8 16. f4 O-O 17. Nd4 Bd7
18. Qh3 Rc8 19. Rac1 $2 (19. f5 $1 exf5 20. Bxf5 Bxf5 21. Nxf5 Nxe5 22. Rad1 {
gains compensation for the pawn.}) 19... Rxc1 20. Rxc1 a5 21. g4 $6 {
White should not give a pawn.} axb4 22. axb4 Bxb4 23. Nf3 d4 $2 (23... Qe8 $1
24. Rb1 ({the pointe is} 24. f5 exf5 25. gxf5 Nxe5 $1) 24... Qe7 25. Nd4 f6 {
plays a cold-blooded defence.}) 24. Nxd4 Bc6 25. Nxc6 bxc6 26. Be2 $2 (26. Qf1
$1 c5 27. Qe2 {defends well.}) 26... Bd2 $1 {Najdorf sets a trap.} 27. Rxc6 $2
(27. Rc4 {protects an important pawn.}) 27... Nxf4 $1 28. Bxf4 Qd4+ 29. Kg2
Bxf4 30. Qf3 Qxe5 {The game is over.} 31. h4 g6 32. Rc4 Bd2 33. Qd3 Be1 34. h5
Rb8 35. hxg6 hxg6 36. Re4 Qf6 37. Qf3 Qh4 38. Rf4 Rb2 39. Re4 Bb4 40. Qh3 Qe1
41. Qf3 Bc5 42. Qf1 Qd2 43. Qa1 Rc2 44. Qa8+ Kg7 45. Qb8 Bd4 46. Qd8 Qd3 $1 {
Najdorf had won the tournament.} (46... Qd3 47. Qxd4+ Qxd4 48. Rxd4 Rxe2+ {
brings a rook ending with two extra pawns for Black.}) 0-1

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "17"]
[White "Pilnik, Herman"]
[Black "Pelikan, Jorge"]
[Result "1-0"]
[ECO "B72"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 O-O 8.
Qd2 d5 $5 {Pelikan presents another new idea.} ({Theory is} 8... Nc6) 9. exd5
Nxd5 10. Nxd5 Qxd5 11. Bf3 Qc4 12. b3 Qc7 $5 13. Rd1 a6 14. O-O {
White has won tempi but this brings little advantage.} Nd7 $5 15. c4 Re8 16. h3
Nf6 17. Ne2 Bd7 18. Nc3 Rac8 19. Be4 $5 e5 $5 (19... Nxe4 $1 20. Nxe4 Bc6 {
equalises.}) 20. Bg5 $1 Bc6 21. Nd5 $5 Bxd5 (21... Nxe4 $1 22. Nxc7 Nxd2 23.
Nxe8 Nxf1 24. Nxg7 Kxg7 25. Kxf1 f6 {draws.}) 22. Bxd5 Nxd5 23. Qxd5 h6 24. Be3
Red8 25. Qf3 Qe7 $6 {Black lifts the control of b6.} 26. Bb6 $1 Re8 $6 {
Exchange should be useful.} 27. Rd5 Rc6 $5 28. Be3 e4 29. Qe2 Qe6 30. Rfd1 g5
31. Qg4 Bf8 $6 32. c5 Qxg4 33. hxg4 Rec8 $6 {Pawn e4 should remain protected.}
34. b4 $1 R6c7 $5 (34... Re6 35. Rd8 Re8 36. R8d7 Rb8 {brings passivity.}) 35.
Re5 $1 a5 36. a3 axb4 37. axb4 Ra8 38. Rxe4 Ra4 39. f3 {
White has an extra pawn in the endgame.} 1-0

[Event "Mar del Plata"]
[Site "5"]
[Date "1942.??.??"]
[Round "17"]
[White "Stahlberg, Gideon"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D18"]
[Annotator "JvR"]
[PlyCount "123"]
[EventDate "1942.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O
O-O 9. Nh4 Ne4 $6 (9... Bg4 $1 10. f3 Bh5 {
will become the best answer (Borisenko - Bagirov, Soviet Union 1967).}) 10.
Nxf5 $1 exf5 11. Nxe4 fxe4 12. Qg4 $5 Qe7 13. f3 exf3 14. e4 $1 Qd7 ({
The pointe is} 14... fxg2 $2 15. Bh6 $1 gxf1=Q+ 16. Rxf1 g6 17. Bxf8 Qxf8 18.
Rxf7 Qxf7 19. Qc8+) 15. Qxd7 Nxd7 16. gxf3 {
White has the two bishops and occupies the centre.} Nf6 17. a5 a6 18. Rd1 Rad8
19. Be3 Rfe8 20. Rd3 Rd7 21. Rb3 Bf8 22. Bf1 Red8 23. Bh3 Re7 24. Rd1 h6 25.
Kf1 Ne8 $5 26. d5 $1 cxd5 27. Bb6 $1 Ra8 28. Rxd5 Nc7 29. Rd7 Ne6 $6 (29...
Rxd7 30. Bxd7 Bd6 {defends more solidly.}) 30. Bxe6 $5 (30. Rxe7 $1 Bxe7 31.
Bxe6 fxe6 32. Bd4 {wins a pawn.}) 30... fxe6 $5 31. Rxe7 Bxe7 32. Bc7 $5 Bd8
33. Be5 $1 {Stahlberg has gained a decisive positional advantage.} Bxa5 34.
Rxb7 g5 35. Rg7+ Kf8 36. Rh7 Rd8 37. Rxh6 Rd1+ 38. Kg2 Bd2 39. Rxe6 Ra1 40. Kh3
a5 41. b4 $1 Ra3 42. Rf6+ Ke7 43. bxa5 Rxa5 44. Rd6 Bb4 45. Rd5 Ke6 46. Rxa5
Bxa5 47. Bg3 Kf6 48. Kg4 Kg6 49. h4 gxh4 50. Bxh4 {
He has connected passed pawns.} Bc3 51. f4 Bb2 52. e5 Kf7 53. Kf5 Bc1 54. e6+
Kf8 55. Bg5 Kg7 56. Bf6+ Kf8 57. Bd4 Ke7 58. Bc5+ Ke8 59. Ke5 Bb2+ 60. Bd4 Ba3
61. f5 Ke7 62. Kd5 {The top three won all games in the last four rounds. Final
standings: Najdorf 131/2/17, Pilnik and Stahlberg 13, Jacobo Bolbochan 12,
Michel 11, Pelikan and Luckis 91/2, Maderna, Villegas and Guimard 9, Rossetto
7, Czerniak and Espina 7, Iliesco and Fanoglio 51/2, Corte 5, Canepa and Graf
31/2.} 1-0

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "1"]
[White "Maderna, Carlos"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "A09"]
[Annotator "JvR"]
[PlyCount "109"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

{The sixth tournament in Mar del Plata was played from 17 until 31 iii 1943.
4000 pesos support came from the Sociadad Union Kursaal Argentina. Tournament
hall was the local casino. 14 men participated. Najdorf and Stahlberg competed
for the first place again. Stalicka and Lachaga wrote the tournament book for
the Circulo La Régence in Buenos Aires.} 1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. exd4
Nxd4 5. Nxd4 Qxd4 6. d3 $5 (6. Nc3 Nf6 7. d3 {
occurred in Alekhine - Euwe, Netherlands 1937 (22).}) 6... e5 7. Nc3 Bc5 8. Be3
Qd6 9. Be2 Nf6 10. O-O c6 11. Qd2 Bf5 12. f4 $1 O-O-O $1 ({The pointe is} 12...
exf4 $6 13. Bxc5 Qxc5+ 14. d4 {(Skalicka).}) 13. fxe5 Qxe5 14. Bxc5 $2 (14. d4
$1 Rxd4 $1 15. Bxd4 Bxd4+ 16. Kh1 Bg6 17. Bf3 {defends properly.}) 14... Qxc5+
15. Kh1 Bg6 16. Rad1 Rd4 $1 17. Rf4 Rhd8 18. Rxd4 $6 ({Preferable is} 18. Qe3
Qg5 19. g3) 18... Qxd4 {Stahlberg restraints the centre.} 19. b4 Bf5 $5 20. Rf1
$5 Bxd3 $1 21. Rd1 Ng4 $1 22. Bxg4+ Qxg4 23. Nd5 $1 {Maderna has a trick.} Qe2
$6 (23... cxd5 24. Qxd3 Qxc4 25. Qxh7 Qg4 26. Qd3 f6 {gains a pawn.}) 24. Qxd3
Qxd3 25. Rxd3 cxd5 26. cxd5 {Black has achieved a better rook ending.} Re8 $5
27. Kg1 Kd7 28. Kf2 Re5 29. Rh3 $5 {White cannot defend his centre pawn.} h5 $1
30. Rg3 g5 31. Rh3 h4 32. Ra3 a6 33. Kf3 ({Or} 33. Rd3 Kd6) 33... Rxd5 34. Kg4
f6 35. Rf3 $5 Ke6 36. a3 Rd2 37. Re3+ Kf7 38. Kf3 Rd5 $5 39. Rc3 Ke6 40. Ke3
Kd7 $5 41. h3 $6 (41. g3 $1 hxg3 42. hxg3 f5 43. g4 fxg4 44. Rc4 {
offers more resistance.}) 41... a5 42. bxa5 Rxa5 43. Kf3 Rf5+ 44. Ke3 Kd6 45.
Rb3 Kc6 46. Ke2 Rf4 47. Ke3 b5 48. Rd3 Kc5 49. Rb3 Kb6 50. Ke2 Ka5 51. Ke3 Ka4
52. Rd3 Rf1 $1 53. Kd4 Rg1 54. Kc5 Rxg2 55. Rf3 {
Black has extra pawns.   Stahlberg took the lead on Najdorf.} 0-1

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "2"]
[White "Stahlberg, Gideon"]
[Black "Liebstein, Arturo"]
[Result "1-0"]
[ECO "E30"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. e3 h6 6. Bh4 Bb4 7. cxd5 exd5 8.
Bd3 c6 9. Nf3 Qa5 10. Qc2 O-O 11. O-O Re8 12. a3 Be7 13. Bg3 $5 {
White has an edge.} Nh5 14. b4 Qb6 15. Be5 Nf8 $5 {Black plays a passive move.}
(15... Nxe5 16. dxe5 g6 {makes a useful exchange.}) 16. h3 $1 Qd8 17. Bh2 Bd6
18. Ne5 f6 $2 {He immobilizes knight h5.} 19. Ng4 Be6 20. Bxd6 Qxd6 21. Bg6 Bf7
22. Bxf7+ Kxf7 23. Qf5 $1 {Liebstein has to give up a pawn.} g6 24. Nxh6+ Ke7 (
{The pointe is} 24... Kg7 25. Qxh5 $1 {(Skalicka).}) 25. Qxh5 $6 {
White exchanges two pieces.} (25. Qf3 $1 {continues the attack.}) 25... gxh5
26. Nf5+ Kd7 27. Nxd6 Kxd6 28. Ne2 Ne6 29. Ng3 Rh8 $5 30. Nf5+ Kd7 31. Nh4 Rhg8
32. Rfe1 Ng5 33. Kh2 Ne4 34. f3 Nd6 35. e4 $1 a5 36. e5 $1 fxe5 37. dxe5 Nc4
38. f4 $1 {Stahlberg has created two passed pawns.} axb4 39. axb4 Rge8 $2 (
39... Rxa1 40. Rxa1 Ne3 $1 {starts a counteraction in the centre.}) 40. Rxa8
Rxa8 41. f5 $1 {The central pawns become unstoppable.} Nd2 42. Ng6 Ne4 43. Nf4
b6 44. f6 Ke8 45. b5 cxb5 46. Nxd5 Ra4 47. e6 Rc4 48. f7+ Kf8 49. Nxb6 {
Stahlberg kept the lead.} 1-0

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "3"]
[White "Liebstein, Arturo"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "142"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e6 7. Be3 Be7 8.
O-O a6 9. Qd2 Qc7 10. Rad1 Bd7 11. f4 O-O 12. Nxc6 Bxc6 13. Bf3 Rac8 14. Qf2 b5
15. a3 Qb7 $5 (15... Nd7 {happened in Von Gottschall - Sämisch, Hannover 1926.}
) 16. e5 dxe5 17. fxe5 Nd7 18. Qg3 Kh8 19. Bh5 f6 20. exf6 Nxf6 21. Bf3 $6 {
White allows a trick.} Bxa3 $5 22. Bxc6 Qxc6 23. Nxb5 $1 Ne4 24. Qe5 Rxf1+ 25.
Rxf1 Bxb2 {Black has gained a pawn.} 26. Nd4 $5 Qd5 27. Qc7 $1 Rg8 $5 28. c4 $1
Qc5 $5 29. Qxc5 Nxc5 30. Nf3 $6 (30. Rb1 $1 Na4 31. Nxe6 Re8 32. Rd1 {draws.})
30... Ne4 31. Bd4 $6 Bxd4+ 32. Nxd4 Nc5 33. Re1 Rd8 $1 34. Re5 Rxd4 35. Rxc5
Kg8 36. Rc6 a5 37. Ra6 Rxc4 38. Rxa5 Kf7 {
Najdorf has an advantage in the rook ending.} 39. Kf2 Kf6 40. Ke3 Rc2 41. Kf3
g5 42. h3 h5 43. Rb5 Rd2 44. Ra5 Rd5 45. Ra2 Kf5 46. Ra8 $6 (46. g4+ $1 hxg4+
47. hxg4+ Ke5 48. Ke3 {stops the black advance.}) 46... Rd3+ 47. Ke2 Rb3 48.
Ra4 g4 49. hxg4+ hxg4 50. Kf2 e5 51. Rc4 $2 Rd3 $2 (51... e4 $1 52. Rd4 Ra3 53.
Rd8 e3+ 54. Kg3 Ra6 $1 55. Re8 Re6 {wins for Black.}) 52. Rc8 Ke4 53. Rg8 $5 ({
Preferable is} 53. Rc4+ $1 Rd4 54. Rc8 Rd2+ 55. Kg3) 53... g3+ $1 54. Ke2 $1 ({
The pointe is} 54. Rxg3 $2 Rxg3 55. Kxg3 Ke3 $1 56. Kh3 e4 57. g4 Kf3 58. g5 e3
59. g6 e2 60. g7 e1=Q 61. g8=Q Qh1# {(Stalicka).}) 54... Re3+ 55. Kd2 Ra3 56.
Rg4+ Kf5 57. Rg8 $2 {White misses the difficult escape.} ({
The pawn sacrifice by} 57. Rc4 $1 Ra2+ 58. Ke3 Rxg2 59. Kf3 Rg1 60. Rc5 $1 {
leads to a theoretical draw.}) 57... Kf4 $1 58. Ke2 Ra2+ 59. Kf1 Ra1+ 60. Ke2
Rg1 61. Kd3 e4+ 62. Kd4 Rd1+ 63. Kc4 Rd2 64. Rf8+ Ke3 65. Re8 Rxg2 66. Kd5 Rd2+
67. Ke5 g2 68. Rg8 Kf2 69. Rf8+ Ke1 70. Rg8 Kf1 71. Rf8+ Rf2 {
Najdorf had to work hard for victory.} 0-1

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "3"]
[White "Rossetto, Hector"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "E19"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 Ne4 7. Qc2 Nxc3 8.
Qxc3 O-O 9. O-O d6 10. Ne1 $5 {Rossetto shows no ambition.} Bxg2 11. Nxg2 Bf6
12. e4 Nd7 13. Be3 c5 14. Rad1 Qc7 15. e5 $2 {
Suddenly, he makes a strange advance.} cxd4 $6 (15... dxe5 $1 16. dxe5 Nxe5 17.
Bf4 g5 $1 {wins a pawn (Stalicka).}) 16. exd6 dxc3 17. dxc7 Ne5 $1 18. b3 Nf3+
19. Kh1 Rfc8 20. Nf4 Rxc7 21. Kg2 Ne5 22. Nh5 ({Or} 22. Rc1 $6 b5 $1 23. cxb5
Ng4 $1) 22... Be7 $1 23. Bd4 $6 (23. Rc1 $5 Nxc4 $1 24. bxc4 Rxc4 25. Rc2 e5 $1
{(threatens ..g6)} 26. g4 Rxg4+ 27. Ng3 Rc4 {gains four pawns for a knight.})
23... c2 24. Rc1 Nxc4 $3 {A brilliant sacrifice brings the win.} 25. bxc4 Rxc4
26. Bxg7 $6 (26. Bb2 $1 Rac8 27. f4 {offers more resistance.}) 26... Ba3 27.
Bh6 $5 Bxc1 28. Rxc1 Rd8 29. Nf4 Rd1 30. Ne2 b5 31. Ng1 a5 32. Nf3 Rxc1 33.
Bxc1 Ra4 34. Kf1 Rxa2 35. Ke2 b4 36. Nd4 e5 {Stahlberg continued to lead.} 0-1

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "5"]
[White "Iliesco, Juan"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E19"]
[Annotator "JvR"]
[PlyCount "54"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. d4 O-O 7. Nc3 Ne4 8. Qc2
Nxc3 9. Qxc3 d6 10. Qc2 Qc8 11. e4 Nd7 12. Bd2 $5 e5 $5 13. Bc3 Bf6 14. Rfe1
Qe8 15. b3 Qe6 $1 {Najdorf dreams about an attack.} 16. Rad1 Rad8 17. Qb2 Rfe8
{The players wait and see.} 18. Nd2 $5 ({More active is} 18. d5 Qg4 $1 19. Qe2
Nc5 20. h3 Qh5 21. b4) 18... Qg4 $5 19. f3 Qh5 20. Nf1 $5 (20. d5 $1 Nc5 21.
Qc2 {avoids any problems.}) 20... exd4 21. Bxd4 Bxd4+ 22. Qxd4 f5 $5 {
Black has the initiative on the kingside.} 23. Nd2 $6 (23. exf5 Qxf5 24. f4
Bxg2 25. Kxg2 {makes useful exchanges.}) 23... Nf6 $1 24. exf5 Qxf5 25. Qf2 d5
$1 26. f4 $2 {White misses a 'petite combinaison'.} (26. Rxe8+ $1 Rxe8 27. Re1
Rxe1+ 28. Qxe1 dxc4 29. Qe7 $1 cxb3 30. Qd8+ Kf7 31. Qxc7+ Kg6 32. axb3 Qd3 33.
Qxb7 Qxd2 34. Bf1 {keeps the equality.}) 26... Ng4 $1 27. Qf3 $2 ({Better is} 
27. Qd4 $1 c5 28. Bxd5+ Kf8 $1 29. Qc3 Rxe1+ 30. Rxe1 Rxd5 31. cxd5 Qxd5 32.
Ne4 Nf6 {but Black wins a small exchange.}) 27... dxc4 $1 {
Najdorf and Stahlberg joined the lead.} (27... dxc4 28. Qxb7 Qc5+ 29. Kh1 Nf2+
30. Kg1 Nh3+ 31. Kh1 Qg1+ $1 32. Rxg1 Nf2# {leads to a smothered mate.}) 0-1

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "7"]
[White "Czerniak, Moshe"]
[Black "Michel, Paul"]
[Result "0-1"]
[ECO "D34"]
[Annotator "JvR"]
[PlyCount "98"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O
O-O 9. Bg5 Be6 10. Rc1 Ne4 11. Bxe7 {
This move was introduced in a game against Michel.} Qxe7 12. dxc5 Rfd8 13. Nd4
Nxc5 14. Nxc6 bxc6 15. Qd4 Rac8 16. Rfd1 f5 17. b4 Ne4 18. Na4 Bf7 $5 {
The chances are about equal.} (18... Nd6 {
was played in Weinitsche - Michel, Bad Elster 1938.}) 19. Rc2 Nd6 20. Rdc1 Nc4
21. Nc5 Na3 22. Rd2 Nc4 23. Rdd1 $5 {
Czerniak avoids a repetition of moves at the cost of a pawn.} Qxe2 24. Re1 $6 (
{Correct is} 24. Bf1 $1 Qe7 $1 (24... Qxa2 $2 25. Bxc4 dxc4 26. Qxd8+ Rxd8 27.
Rxd8+) 25. Re1 Qc7 26. Bd3 {and White has sufficient compensation for the pawn.
}) 24... Qxa2 25. Re7 Qd2 $5 26. Qxd2 Nxd2 27. Rxa7 $6 (27. Nb7 $1 Re8 28. Rxf7
$1 Kxf7 29. Nd6+ Ke6 30. Nxe8 Rxe8 31. Rxc6+ {offers more resistance.}) 27...
Rb8 28. Nb7 Rd7 29. Rxc6 g6 30. Rb6 Re8 31. Ra1 Rde7 $1 32. f4 $2 (32. h4 Rb8
$1 33. Ra7 Nc4 34. Rb5 {brings the last chance.}) 32... Rb8 $1 33. Ra7 Re1+ 34.
Kf2 Rbe8 $1 {Black threatens mate in one.} 35. Bf3 Nxf3 $1 36. Kxf3 d4 37. Rd6
R8e3+ 38. Kg2 R3e2+ 39. Kf3 g5 40. g4 Re3+ 41. Kf2 R3e2+ 42. Kf3 Rd2 43. Ra3
Ree2 44. fxg5 Rf2+ 45. Kg3 f4+ 46. Kh4 Rxh2+ 47. Rh3 Rxh3+ 48. Kxh3 Bc4 49. g6
h6 $1 {Michel will deliver mate soon. He got the brilliancy prize for this
game. Najdorf, Michel and Stahlberg led by 6/7.} 0-1

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "8"]
[White "Najdorf, Miguel"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "D52"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Qa5 7. cxd5 Nxd5 8.
Qd2 Bb4 9. Rc1 f6 10. Bh4 O-O 11. Bd3 $5 Nxc3 $5 12. bxc3 Ba3 13. Rb1 Qh5 $6 ({
More useful is} 13... Re8) 14. Bg3 Be7 $5 15. Qc2 Kh8 $6 ({Natural is} 15...
Rd8 16. c4 b6) 16. O-O e5 $5 17. Bf5 b6 $6 (17... exd4 18. exd4 Nb6 {
makes more sense.}) 18. Nh4 $1 g5 19. Nf3 Rd8 $5 20. dxe5 g4 21. exf6 $1 Bxf6
22. Nd4 Ne5 23. Be4 Ba6 24. Rfd1 Rac8 $5 (24... Rd6 25. Nxc6 Rxc6 26. Bxc6 Nxc6
27. Rd6 {also costs material.}) 25. Qa4 Bc4 26. Qxa7 {
Miguel is going to capture anything in sight.} Ra8 27. Qxb6 Rab8 28. Qxb8 $1
Rxb8 29. Rxb8+ Bg8 30. Nxc6 Nf7 31. Rd5 Ng5 32. Ne7 $1 {Najdorf took the lead.}
({Elementary is} 32. Ne7 Bxe7 33. Be5+ Bf6 34. Bxf6#) 1-0

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "10"]
[White "Bolbochan, Jacobo"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "D74"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. cxd5 Nxd5 7. d4 c6 8. Nc3
Nxc3 9. bxc3 Nd7 $5 10. e4 e5 11. Rb1 $5 Qa5 $5 {
Problems will arise for the black queen.} 12. Qc2 exd4 13. cxd4 Nb6 14. Bd2 $1
Qa6 15. Rfc1 Be6 $2 ({Better is} 15... Rd8 $1 16. Bf1 Qa3) 16. a4 $1 Nxa4 $5
17. Bf1 $1 b5 18. d5 $1 Bg4 19. Ne1 $2 (19. dxc6 $1 Qc8 20. Rxb5 Bxf3 21. Qxa4
{wins for White.}) 19... Qc8 $1 20. Qb3 a6 21. Rxc6 {
Bolbochan has a positional plus.} Qd8 22. Nd3 Re8 23. Re1 Bd7 24. Rc2 Rc8 25.
Rxc8 Qxc8 26. Rc1 Qd8 27. Bg2 Bd4 $5 28. Bf4 (28. Qb4 $1 {
restricts the black position.}) 28... Nb6 29. Bc7 Qg5 30. Bf4 Qh5 31. Qa2 Nc4
$5 32. Re1 $2 {Bolbochan should accept the offer.} ({The complications of} 32.
Qxa6 Qe2 33. Qb7 Rd8 34. Qc7 Bb6 35. Bf1 $1 Qf3 36. Qb7 Bd4 37. Bg5 f6 38. Bf4
Qxe4 {slightly favour White.}) 32... a5 $1 33. h4 a4 34. Bc1 Rc8 35. Kh2 b4 $1
36. Nf4 $6 {Again, White should have captured the sacrificed pawn.} (36. Nxb4
Ne5 $1 37. Nc6 Ng4+ 38. Kh1 Nxf2+ 39. Kh2 Ng4+ 40. Kh1 Bxc6 41. dxc6 Qc5 {
leads to a strong black attack.}) 36... Qe5 37. Bh3 b3 {
The charge on the queenside decides easily.} 38. Qe2 Bxh3 39. Nd3 Qh5 40. Kxh3
Qxe2 41. Rxe2 a3 42. d6 a2 {Najdorf led one point on Stahlberg and Michel.} 0-1

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "11"]
[White "Najdorf, Miguel"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D34"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O
O-O 9. Bg5 Be6 10. Rc1 Ne4 11. Bxe7 Qxe7 12. dxc5 Rfd8 13. Nd4 Nxc5 14. Nxc6
bxc6 15. Qd4 Rac8 16. Rfd1 f5 17. b4 Ne4 18. Na4 Bf7 19. Rc2 Nd6 20. e3 $5 {
Najdorf has found a new move in the Tarrasch.} (20. Rdc1 {
was played in Czerniak - Michel (round seven).}) 20... Nc4 21. Nc5 Rb8 22. Na6
Rb6 $6 ({Preferable is the retreat} 22... Rbc8 $1) 23. Rxc4 $1 Rxa6 24. Rc5 $1
Rxa2 $2 (24... Be8 $1 {continues the status quo.}) 25. Rxc6 Ra4 26. Rc5 $5 Qb7
(26... a5 $5 27. Bxd5 Kf8 28. Qc4 Rxb4 29. Qc2 Qe5 30. Rc8 Rxc8 31. Qxc8+ Be8
32. Qc5+ Qe7 33. Qxa5 {costs a pawn.}) 27. Qh4 $1 Rf8 28. Rcxd5 $1 Rxb4 ({Or} 
28... Qxb4 29. Qxb4 Rxb4 30. Rxf5 {and White wins the endgame.}) 29. Rxf5 $1
Qb6 $6 (29... Rxh4 30. Bxb7 {(Stalicka)} Ra4 {prolongs the game.}) 30. Be4 $1
g6 31. Rf4 a5 32. Qe7 $1 Rxe4 33. Qxe4 Qb3 34. Rd7 Qb5 {
Michel was out of the race for the first place.} (34... Qb5 35. Rfxf7 $1 Rxf7
36. Qe8+ Rf8 37. Qe6+ Kh8 38. Qe7 {wins for White easily.}) 1-0

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "11"]
[White "Stahlberg, Gideon"]
[Black "Pelikan, Jorge"]
[Result "1-0"]
[ECO "A44"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. d4 c5 2. d5 e5 3. e4 d6 4. f4 exf4 5. Bxf4 Ne7 6. Nf3 Ng6 7. Bg3 Nd7 8. Nbd2
Be7 9. Nc4 O-O $1 (9... Nb6 {was played in Fine - Santasiere, Milwaukee 1935.})
10. Ne3 (10. Nxd6 $6 Bxd6 11. Bxd6 Re8 {(Stalicka)} 12. Be2 Nf6 $1 13. Bxc5
Nxe4 {favours Black.}) 10... Bf6 11. c3 Re8 12. Bd3 b5 $1 13. O-O c4 14. Bc2
Nc5 15. Nd4 $1 Nxe4 16. Bxe4 Rxe4 17. Qf3 Re8 18. Nxb5 Qb6 $1 19. Nd4 $1 Bd7 $2
{Pelikan allows an attack in the centre.} ({Better is} 19... Ne5 $1 20. Qe4 Bd7
$11) 20. Nxc4 Bxd4+ 21. Kh1 $1 (21. cxd4 $6 Qxd4+ 22. Kh1 f5 23. Nxd6 Rf8 {
leads to less advantage for White.}) 21... Qc5 22. Qxf7+ Kh8 23. Nxd6 $1 {
An execution follows.} Re7 24. cxd4 $1 Qxd4 25. Nf5 $1 Bxf5 26. Qxf5 {
The white queen gave a show.} Qxb2 27. d6 Ree8 28. d7 Rf8 29. Qd5 Ne7 30. Rxf8+
Rxf8 31. d8=Q $1 Qxa1+ 32. Qd1 Qf6 33. Q8d3 Nd5 34. h3 Qg5 35. Qxd5 Qxg3 36.
Qd8 Qf2 37. Q1d6 Kg8 38. Q8e7 h6 39. Kh2 Rf6 40. Qg3 {Stahlberg got the beauty
prize for this game. Najdorf led by one point on Stahlberg.} 1-0

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "12"]
[White "Pelikan, Jorge"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E69"]
[Annotator "JvR"]
[PlyCount "98"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nbd7 7. Nc3 e5 8. h3
c6 9. b3 $5 Re8 10. e4 $6 exd4 $1 11. Nxd4 Nc5 {
Black has gained strength on the diagonal a1-h8.} 12. Re1 a5 13. Nc2 $6 {
Pelikan commits errors in the middle game.} ({Better is} 13. Bf4 $1) 13... Nfd7
14. Qd2 $5 Ne5 $1 15. Re3 $5 (15. f4 Ned3 $1 16. Re3 d5 $1 {also favours Black.
}) 15... a4 16. Rb1 axb3 17. axb3 f5 18. f4 $2 ({Preferable is} 18. Nd4) 18...
Nf7 $2 {Najdorf misses a tactical decision.} (18... Nxb3 $1 19. Rxb3 Nxc4 20.
Qd3 Nxe3 21. Bxe3 fxe4 22. Nxe4 d5 {wins for Black.}) 19. Kh2 Nxe4 20. Nxe4
fxe4 21. Nb4 $2 (21. Bxe4 $1 Ra2 22. Ba3 {offers more resistance.}) 21... d5 $1
22. Bb2 $5 dxc4 23. Qxd8 Rxd8 24. Bxg7 Kxg7 25. bxc4 Rd2 $1 26. Kg1 Nd6 $1 27.
g4 Ra5 28. Bxe4 Nxc4 29. Rc3 Nd6 30. Bd3 h5 31. gxh5 Rxh5 32. Bf1 Rd4 33. Rf3
Bf5 34. Rbb3 c5 35. Na2 Be4 36. Rf2 Bd5 37. Rb6 Ne4 38. Rg2 Bc6 39. Re2 Rf5 40.
Bg2 Rxf4 41. Rc2 Bd5 42. Nc1 Rf6 43. Rxf6 Nxf6 44. Rxc5 Rd1+ 45. Bf1 Ne4 46.
Rc7+ Kh6 47. Ne2 Nd2 48. Rc1 Rxf1+ 49. Rxf1 Nxf1 {Najdorf kept the lead.} (
49... Nxf1 50. Kxf1 Bc4 {
and a further exchange leads to a won pawn ending (Stalicka).}) 0-1

[Event "Mar del Plata"]
[Site "6"]
[Date "1943.??.??"]
[Round "13"]
[White "Stahlberg, Gideon"]
[Black "Fenoglio, Virgilio"]
[Result "1-0"]
[ECO "D93"]
[Annotator "JvR"]
[PlyCount "151"]
[EventDate "1943.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 g6 5. Bf4 Bg7 6. e3 O-O 7. Qb3 e6 8. Bd3 $5
Nh5 $5 9. Be5 $1 f5 $2 (9... Bxe5 10. Nxe5 Nd7 {leads to exchanges.}) 10. Bxg7
Nxg7 11. O-O Nd7 12. Rae1 $6 Rf7 13. Rc1 {White has lost time.} Qf6 14. Nd2 $5
Ne8 15. cxd5 exd5 16. f4 $5 Nd6 17. Nf3 Ne4 $2 {This slip will be punished.}
18. Bxe4 fxe4 19. Ng5 Rf8 20. Ngxe4 {White wins a pawn.} Qe7 21. Rce1 Nf6 22.
Nxf6+ Qxf6 23. Nb1 (23. Ne4 $1 {speeds up the win.}) 23... Bf5 24. Nd2 Rf7 25.
Nf3 Kh8 26. Ne5 Rg7 27. Qd1 Be4 28. Qg4 a5 29. Qg5 Rf8 30. Qxf6 Rxf6 31. h4 h5
32. Rc1 Rf8 33. Kf2 Ra8 34. Rc3 Ra6 35. g4 $5 hxg4 36. Kg3 Rb6 37. Rb3 Rxb3 38.
axb3 Rg8 39. Ra1 Ra8 40. Nf7+ $1 Kg7 41. Nd6 Bf5 42. Nxb7 Re8 43. Re1 a4 44.
bxa4 Rb8 45. Nd6 Rxb2 46. Ra1 $1 Rb3 47. a5 $5 Rxe3+ 48. Kf2 Re7 49. a6 Ra7 50.
Nb7 Bc8 51. Nc5 $1 Ra8 $5 52. a7 Kf6 53. Ra5 Kf5 54. Kg3 Kf6 55. Na4 Bb7 56.
Nb6 Re8 57. a8=Q Bxa8 58. Rxa8 Re4 59. Kxg4 Rxd4 60. Rc8 Rd1 61. Rxc6+ Kg7 62.
Nd7 Rg1+ 63. Kf3 Rf1+ 64. Kg3 Rg1+ 65. Kf2 Rg4 66. Kf3 Rxh4 67. Ne5 Rh6 68. Kg4
d4 69. Rc7+ Kf6 70. Rc6+ Kg7 71. Rd6 d3 72. Rxd3 Rh1 73. Rd7+ Kh6 74. Nf3 Rb1
75. Ng5 Rg1+ 76. Kh3 {Najdorf had survived against Pilnik in the meantime. The
final standings became: Najdorf 11/13 (650 pesos), Stahlberg 101/2 (500 pesos),
Michel 81/2 (400 pesos), Rossetto 71/2 (300 pesos), Pilnik 7 (200 pesos),
Czerniak, Guimard and Pelikan 61/2 (80 pesos), Jacobo Bolbochan 6 (60 pesos),
Iliesco and Maderna 5 (50 pesos), Fenoglio 41/2 (45 pesos), Liebstein 31/2 (35
pesos), Villegas 3 (30 pesos).   The starvation by Raud remained an exception.
Other immigrants did well. Najdorf would even become rich in the insurance
business.} 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "1"]
[White "Flores Alvarez, Rodrigo"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "E18"]
[Annotator "JvR"]
[PlyCount "90"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

{The traditional tournament took place in Mar del Plata from 15 until 31 iii
1944. The sponsors supplied more than 7000 pesos (nearly $2000). Sixteen men
participated.} 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. c4 Be7 6. O-O O-O 7.
Nc3 Ne4 8. Nxe4 Bxe4 9. Bf4 d6 10. Ne1 Bxg2 11. Nxg2 Bf6 $5 ({Usual is} 11...
Nd7) 12. Qd2 Re8 13. Rac1 Nc6 14. d5 Nd4 $1 15. Be3 Nf5 16. g4 $5 ({
More solid is} 16. b3) 16... Nxe3 17. Nxe3 Qd7 18. Kh1 $5 g6 19. f4 $6 (19. f3
$1 {protects a weakness.}) 19... Bg7 20. Rf3 $6 {
The kingside becomes vulnerable.} exd5 $1 21. cxd5 Re4 $1 22. h3 $5 Rae8 23.
Rc4 Qe7 24. Rxe4 Qxe4 {White chessmen are placed clumsily.} 25. b3 Bd4 $5 (
25... a5 $1 {opens another front.}) 26. Nc2 Bc5 $1 27. b4 Qxe2 28. Qxe2 Rxe2
29. Rc3 $1 Bf2 30. Rxc7 Bg3 31. Nd4 $2 (31. f5 $1 Be5 32. Kg1 {
defends stubbornly.}) 31... Rh2+ 32. Kg1 Rxa2 33. Nc6 a5 34. f5 Bh4 $1 35. bxa5
bxa5 36. Rd7 a4 37. Rxd6 Kg7 38. Ne5 Bf6 39. g5 Bxe5 40. f6+ Bxf6 41. gxf6+ Kh6
42. Ra6 Kg5 43. h4+ Kf5 44. h5 a3 45. hxg6 hxg6 {
Stahlberg played a fine positional game.} 0-1

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "2"]
[White "Najdorf, Miguel"]
[Black "Iliesco, Juan"]
[Result "1-0"]
[ECO "D77"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 d5 4. Nf3 Bg7 5. Bg2 O-O 6. O-O e6 7. Nc3 b6 8. cxd5
$5 ({Known is} 8. Ne5) 8... exd5 9. Bf4 Bb7 10. Rc1 c6 11. Re1 Re8 12. Qb3 Nbd7
13. Rcd1 $5 {White does not have a plan.} Qe7 14. Qa4 $5 a5 15. Qb3 Qb4 16. Qc2
$1 a4 $5 17. a3 Qa5 18. Ne5 Nxe5 19. Bxe5 b5 20. Na2 Rac8 21. Bh3 Rcd8 22. Nb4
Qb6 23. e3 Ne4 24. Bxg7 Kxg7 25. Rc1 Rd6 26. Bg2 $1 Rf6 $6 27. Nd3 $1 {
Najdorf has gained advantages.} Bc8 $2 {Iliesco collapses.} ({Correct is} 27...
Nd6 $1 28. Ne5 $5 {(Stalicka)} Re7 $1 {and Black does not lose a pawn.}) 28.
Bxe4 $1 dxe4 29. Ne5 Be6 (29... Bf5 30. g4 {also costs material.}) 30. Qxe4 Bf5
31. Qg2 $1 Qa5 32. Nxc6 Qd2 33. f3 Qd3 34. Rc3 Rxc6 35. Rxd3 Bxd3 36. Qd2 Bf5
37. e4 Bh3 38. Rc1 Rec8 39. Rxc6 Rxc6 40. Kf2 {Najdorf had won his second game.
} 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "3"]
[White "Guimard, Carlos"]
[Black "Liebstein, Arturo"]
[Result "1-0"]
[ECO "E11"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 Ne4 6. Qc2 d5 7. e3 Nd7 $5
{Black has a passive game.} 8. Bd3 f5 9. O-O O-O 10. Nc3 c6 11. Rad1 Kh8 12.
Ne5 $5 Nxe5 13. dxe5 Bd7 14. Ne2 Qe7 15. b3 Rac8 16. Qb2 Be8 17. f3 Ng5 18. Qd4
$5 Nf7 $6 (18... c5 $1 19. Qc3 Bc6 {counters in the centre.}) 19. cxd5 cxd5 20.
Rc1 Bc6 21. Rc2 Qc7 $6 (21... b6 $1 {makes a useful defensive move.}) 22. f4 a6
23. Rfc1 Qa5 24. Qc5 Qd8 $6 {Exchange decreases the pressure.} 25. Nd4 $1 Qe8
$5 26. Qb6 Nd8 (26... Qd8 27. Qxd8 Nxd8 28. Bxa6 $1 {also costs a pawn.}) 27.
Bxa6 $1 Ra8 28. Be2 Rf7 29. a4 g6 30. a5 Rd7 31. b4 Re7 32. b5 Bd7 33. Rc7 Kg8
34. a6 bxa6 35. bxa6 Nf7 36. a7 Qd8 37. Ba6 Be8 38. Qb7 Bd7 39. Bb5 Bc8 40.
Qxc8 $5 Rxa7 41. Rxa7 Rxa7 42. Nxe6 {Guimard scored a solid win.} 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "5"]
[White "Michel, Paul"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "B85"]
[Annotator "JvR"]
[PlyCount "55"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 Be7 7. O-O a6 {
This move was made popular by Najdorf.} 8. f4 Nc6 9. Be3 Qc7 10. Qd2 Bd7 11.
Rad1 O-O (11... Rc8 {already occurred in Gossip - Paulsen, Breslau 1889.}) 12.
Bf3 Na5 $5 {The first new move is played.} 13. Qf2 Nc4 14. Bc1 Rac8 15. g4 $5 {
Michel shows no fear.} Kh8 $5 {The king vacates a square.} ({The alternative is
} 15... e5 $1 16. g5 $5 exd4 17. gxf6 dxc3 18. fxe7 Rfe8) 16. g5 $1 Ng8 17. f5
$5 d5 $5 (17... Qb6 $1 18. Nb3 Qxf2+ 19. Rxf2 {equalises.}) 18. exd5 $6 ({
Preferable is} 18. Bg2) 18... Bc5 $2 (18... e5 $1 19. Nb3 Bxf5 {favours Black.}
) 19. Ne4 $1 Ba7 $6 (19... Bb6 $1 20. f6 e5 21. fxg7+ Kxg7 {(Stalicka)} 22. b3
$1 {is better for White.}) 20. f6 $1 {The decisive attack begins.} gxf6 (20...
e5 $6 21. fxg7+ Kxg7 22. Nf5+ $1 Bxf5 23. Qxa7 {wins for White (Stalicka).})
21. gxf6 e5 22. Qg3 $1 Nxf6 23. Nxf6 Rg8 (23... Bxd4+ 24. Kh1 Bf5 25. Qh4 Nd6
26. c3 Bb6 27. Bh6 {leads to a devastating white attack.}) 24. Nxg8 Rxg8 25.
Bg5 Qd6 26. Bg2 f5 27. Kh1 Qg6 28. Ne6 $1 {Michel won convincingly.} 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "5"]
[White "Pilnik, Herman"]
[Black "Luckis, Marcos"]
[Result "1-0"]
[ECO "B72"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8.
Qd2 O-O 9. Rd1 Ng4 10. Bxg4 Bxg4 11. f3 Be6 $5 ({Usual is} 11... Bd7) 12. O-O
Rc8 13. Rf2 Re8 14. f4 $5 Nxd4 15. Bxd4 Bxd4 16. Qxd4 Qb6 $6 ({The risky} 16...
Qa5 $1 17. f5 $5 gxf5 18. Rd3 f4 19. Rxf4 f6 20. Rg3+ Kf7 {keeps the equality.}
) 17. Qxb6 axb6 18. f5 Bc4 19. f6 $1 Rc6 $6 (19... Kf8 $1 {develops the king.})
20. fxe7 Rxe7 21. Rfd2 {White has collected advantages.} Re6 22. Nd5 Kg7 23. b3
Ba6 24. a4 $1 b5 $1 ({The pointe is} 24... Rxe4 $6 25. c4 $1 {
and Black suffers from strangulation.}) 25. axb5 Bxb5 26. c4 Ba6 27. Rd4 b5 $1
{Black plays a liberating move.} 28. Ra1 $1 bxc4 29. Nb4 Bb5 $2 {
Black misses the last chance.} (29... Rc8 $1 30. Nxa6 cxb3 31. Rb4 Rc3 32. h3
d5 $5 33. exd5 Re2 34. Kh2 b2 35. Rg1 Rd2 {gives excellent counter-play.}) 30.
Nxc6 Bxc6 31. Ra6 Bxe4 32. bxc4 Bb7 $5 (32... d5 $1 33. Rxe6 fxe6 34. c5 {
also wins for White.}) 33. Rb6 Ba8 34. Rbxd6 Re1+ 35. Kf2 Rc1 36. g4 Rc2+ 37.
Ke3 $1 Rxh2 38. Rf4 h5 39. g5 Rg2 40. Rd7 Rg3+ 41. Kd2 $1 Rxg5 42. Rfxf7+ Kg8
43. Rg7+ Kf8 44. Rdf7+ Ke8 45. Ra7 Kf8 46. Rgc7 {Michel took the lead.} 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "6"]
[White "Reed Valenzuela, Enrique"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "E06"]
[Annotator "JvR"]
[PlyCount "122"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O c6 7. Nc3 b6 8. b3 $5
Ba6 9. Ne5 Nfd7 10. Nxd7 Nxd7 {The chances are equal.} 11. cxd5 $6 cxd5 12. Bb2
Rc8 {Black develops pressure on the queenside.} 13. Rc1 b5 14. a3 b4 15. Nb1 $6
(15. axb4 Bxb4 16. Na2 {tries to neutralise the restraint.}) 15... Rxc1 16.
Bxc1 bxa3 17. Nxa3 $6 (17. Bxa3 Bxa3 18. Nxa3 {
makes a useful exchange (Stalicka).}) 17... Qa5 18. Nb1 Rc8 19. Bf3 $5 Qa2 $1
20. Bd2 Rb8 21. Nc3 Qa3 22. Qa1 Rxb3 23. Rb1 Bc4 24. Qxa3 Bxa3 25. Rxb3 Bxb3
26. Nb5 Bb2 27. Nxa7 Bxd4 {Black has won a pawn.} 28. Nc6 Bc5 29. Bc3 Ba4 30.
Ne5 Nxe5 31. Bxe5 f6 $1 {He conquers the centre in the endgame.} 32. Bb2 Kf7
33. h4 Bc6 34. Kf1 e5 35. Bg4 Ke7 36. Bf5 h6 37. Bd3 Kd6 38. Bc1 e4 39. Ba6 d4
40. Bf4+ Kd5 {Guimard advances easily.} 41. g4 Bd6 42. Bc1 Ke5 43. Bc4 Bb4 44.
h5 Be7 45. Bd2 Bd7 46. f4+ exf3 47. exf3 f5 $1 48. gxf5 Be8 $1 49. Ke2 Bxh5 50.
Be6 Be8 51. Ba5 Bb5+ 52. Kf2 g6 53. Bc7+ Kf6 54. f4 gxf5 {
A second pawn has been gained.} 55. Bb3 Bc5 56. Be5+ Kg6 57. Bd1 d3+ 58. Kg3
Bc6 59. Bb2 Bb4 60. Bd4 Be1+ 61. Bf2 d2 $1 {Guimard won a fine ending.} 0-1

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "7"]
[White "Guimard, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "D46"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 e6 5. Bd3 Nbd7 6. O-O Be7 7. Nc3 O-O 8. e4
dxe4 9. Nxe4 c5 10. Nxc5 Nxc5 11. dxc5 Bxc5 12. Qe2 Qc7 $5 13. Bg5 b6 $1 14.
Rad1 (14. Qc2 $5 h6 $1 15. Bxf6 gxf6 16. Rad1 {brings a white edge.}) 14... Bb7
15. Ne5 $5 {White misses his last chance to cripple the black kingside.} Rfd8
16. Kh1 Be7 17. f4 g6 $6 ({Preferable is} 17... h6 $1 18. Bh4 Rd6) 18. Rfe1 $1
{White threatens Nxf7.} Rd6 19. Qe3 $6 (19. b4 $1 Rad8 20. c5 bxc5 21. Rc1 {
keeps an edge.}) 19... Rad8 20. b3 Ne4 $1 21. Bxe7 Qxe7 22. Be2 {
He cannot capture a knight.} Rxd1 23. Rxd1 $2 {
Guimard weakens the protection of the first rank.} ({Correct is} 23. Bxd1 $1
Qa3 24. Bf3 f5 25. Bxe4 Bxe4 26. Qf2) 23... Rxd1+ 24. Bxd1 Qa3 $1 25. Qd4 $5 ({
The pointe is} 25. Bf3 Qxa2 $1 26. Bxe4 Bxe4 27. Qxe4 $4 Qa1+) (25. h3 Qxa2 26.
Bf3 Ng3+ 27. Kg1 {also costs a pawn (Stalicka).}) 25... Qc1 $5 26. Kg1 Nd2 $1
27. Qd8+ Kg7 28. Nd7 Qxd1+ 29. Kf2 Ne4+ 30. Ke3 Qd2+ {
Black delivers mate.   Najdorf, Pilnik and Michel shared the lead.} 0-1

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "8"]
[White "Garcia Vera, Romeo"]
[Black "Michel, Paul"]
[Result "0-1"]
[ECO "D34"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O
O-O 9. Bg5 Be6 10. Rc1 c4 11. Ne5 Rc8 $5 {
Black wants to attack on the queenside.} 12. Qd2 a6 13. Kh1 $6 {
He loses the initiative.} ({Better is} 13. Bxf6 Bxf6 14. f4 Bxe5 15. dxe5 Ne7
16. e3 {and White counters in the centre.}) 13... b5 $1 14. Nxc6 $5 Rxc6 15. a3
h6 16. Bxf6 $5 Bxf6 17. Rcd1 Rd6 18. e4 $2 (18. Rfe1 $1 {
would prepare the advance.}) 18... dxe4 19. Nxe4 Rd7 $1 20. Nxf6+ Qxf6 21. Qe3
Rfd8 22. Rd2 Rxd4 {Black has won a pawn.} 23. Rfd1 Rd3 $5 24. Rxd3 Rxd3 25.
Rxd3 cxd3 26. Qxd3 Qxf2 {Michel attacks.} 27. b4 Qe1+ 28. Qf1 Qc3 29. a4 $5
bxa4 30. Qxa6 Qe1+ 31. Bf1 Bd5+ {Black delivers mate in one.} 0-1

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "10"]
[White "Pilnik, Herman"]
[Black "Flores Alvarez, Rodrigo"]
[Result "1-0"]
[ECO "C12"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4
g6 9. Bd3 Nxd2 10. Kxd2 c5 11. Rb1 $5 (11. h4 {
was popular in the McCutcheon Variation.}) 11... Nc6 12. Nf3 cxd4 13. cxd4 Qa5+
14. Ke3 {The king attacks.} Nb4 $2 ({Better is} 14... b6 $1 15. Qf4 Ba6 {
and Black develops his passive bishop.}) 15. Rb2 Qa4 $5 16. Rhb1 a5 17. Ne1 Bd7
18. c3 $1 Nxd3 19. Nxd3 Rc8 20. Rxb7 $1 Rxc3 (20... O-O $5 21. Qh4 h5 22. Qe7 {
also brings a white charge.}) 21. Rb8+ Bc8 22. Qd1 Qxd1 23. Rxd1 O-O 24. Rb3
Rc2 $5 {Black postpones the exchange for one move.} 25. Rd2 Rxd2 26. Kxd2 {
White has a  better endgame.} Ba6 27. Nc5 Bc4 28. Rb2 g5 29. a4 Kg7 30. Rb7 Kg6
$1 31. f3 h5 32. Ke3 Rc8 33. f4 g4 $6 ({Preferable is} 33... gxf4+ 34. Kxf4 Bf1
) 34. f5+ $1 {Pilnik opens the kingside by a positional sacrifice.} exf5 35.
Kf4 $1 Rc6 36. Rd7 $5 h4 37. Rb7 $5 {He hesitates.} Bf1 38. g3 hxg3 39. hxg3
Be2 40. Rb8 $1 Bf1 $5 (40... Bc4 $1 41. Rg8+ $1 Kh7 42. Ra8 Kg6 43. Nd7 $1 Ra6
44. Rg8+ Kh7 45. Rc8 Kg6 46. Nf6 {leads to a white triumph.}) 41. Rg8+ Kh7 42.
Rd8 {He wins back the pawn.} Rb6 $5 43. Nd7 Rc6 44. Nf6+ Kg6 45. Nxd5 Rc2 46.
Rd6+ Kg7 47. Kg5 Rc8 48. Rd7 Bc4 49. Nf4 Bb3 50. e6 $1 {Pilnik took the lead.}
1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "11"]
[White "Maderna, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B85"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. O-O Be7 8. Be3
Qc7 9. a4 Nc6 10. Nb3 b6 11. f4 Bb7 12. Bf3 O-O 13. Qd2 Nd7 $5 14. Rad1 Nb4 $5
15. Qf2 Nc5 16. Nd4 Rad8 17. Rd2 Qd7 $5 ({The alternative is} 17... d5 $1 18.
e5 f5) 18. f5 $5 Bf6 19. g4 $6 {
Rossetto weakens his defence on a long diagonal.} Qe7 $1 {
Najdorf stops the advance.} 20. Kh1 $6 ({Preferable is} 20. Rfd1 d5 $1 21. exd5
Nxd5 {and White exchanges.}) 20... d5 $1 21. g5 $2 (21. exd5 exd5 {(Stalicka)}
22. Re2 {defends properly.}) 21... Bxg5 22. e5 $5 f6 $1 {
A counteraction on the kingside decides the game.} 23. Rg1 $2 (23. Bxg5 fxg5
24. Bg2 {prevents a disaster.}) 23... exf5 24. Nxf5 Qxe5 25. Bxg5 fxg5 26. Nd4
Ne4 27. Qe3 $2 {
Black wins a queen by 27...Ng3+.  Najdorf and Pilnik joined the lead.} 0-1

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "12"]
[White "Pilnik, Herman"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "C78"]
[Annotator "JvR"]
[PlyCount "33"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 d6 7. Ng5 d5 8. exd5
Nxd5 $2 {Rossetto falls into a known trap.} ({Better is} 8... Nd4 {
(Alekhine - Neumann, Düsseldorf 1908).}) 9. Nxf7 $1 Kxf7 10. Qf3+ Ke6 11. Nc3
Nce7 12. d4 c6 13. Bg5 h6 14. Bxe7 Bxe7 15. Rfe1 $5 (15. dxe5 {
won in O'Hanlon - Allen, Belfast 1938.}) 15... Rf8 16. Bxd5+ cxd5 17. Rxe5+ {
Pilnik and Najdorf kept the lead.} 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "13"]
[White "Maderna, Carlos"]
[Black "Villegas, Benito"]
[Result "1-0"]
[ECO "E85"]
[Annotator "JvR"]
[PlyCount "95"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 Nc6 6. Nge2 e5 7. Be3 O-O 8. d5
Ne7 9. g4 Ne8 10. Ng3 $5 {
White plays an offensive move in the King's Indian Defence.} ({Known is} 10.
Qd2) 10... f5 11. gxf5 gxf5 12. Bg5 $5 f4 $6 ({Preferable is} 12... Bf6 13. Bh6
Bg7) 13. Nh5 $1 Nf6 14. Nxg7 Kxg7 15. Rg1 {White has the initiative.} Kf7 16.
Qd2 Rg8 17. Qf2 Rg6 18. Bxf6 $6 Kxf6 19. O-O-O Rxg1 20. Qxg1 Bd7 21. Rd2 b6 22.
h4 Qg8 $1 23. Qh1 $5 {Maderna keeps the game going.} Qh8 $6 (23... Qg3 $1 24.
Rg2 Qe1+ 25. Kc2 Rg8 {equalises (Stalicka).}) 24. Bh3 Bxh3 25. Qxh3 Qc8 26. Qh2
Qd7 27. Rg2 Rg8 28. Nd1 Qc8 29. Nf2 h5 $5 30. Nh3 $1 Rxg2 31. Qxg2 Qg8 32. Ng5
$1 c6 $2 ({Correct is} 32... c5 $1) 33. Kb1 $2 (33. Qh3 $1 cxd5 34. Qd7 $1 {
gains material.}) 33... cxd5 34. cxd5 b5 $2 {He weakens his queenside.} ({
Right is} 34... Ng6 $1 35. Ne6 Ne7 36. Qxg8 Nxg8 37. Nc7 Ke7 {
and Black defends properly.}) 35. a3 a5 36. Qg1 $1 Qb8 $5 37. Nh7+ $1 Kf7 38.
Qg5 Qg8 39. Qxh5+ Qg6 40. Ng5+ Kg7 41. Qg4 Kh6 42. Ka2 Qf6 43. Qd7 Kh5 44. Kb1
Ng8 45. Nf7 Qg7 46. Qd8 $1 Nf6 47. Nxd6 Kxh4 48. Nf5+ {
Maderna played a fine positional game.} 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "14"]
[White "Pelikan, Jorge"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "E18"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Bd2
f5 $5 ({Known is} 8... d5) 9. d5 $5 Bf6 {This position was reached by Pelikan
and Stahlberg three times in 1944 and 1945.} 10. Qc2 Qe8 11. Nxe4 fxe4 12. Ng5
$1 exd5 13. cxd5 Bxg5 $1 14. Bxg5 Bxd5 15. Qxc7 Qe6 $5 16. Bf4 Na6 17. Qd6 Qxd6
18. Bxd6 {White has an edge.} Rf6 19. Bf4 Bc6 20. Rfd1 Re8 21. Bh3 Rf7 22. Rd2
Nc5 23. Be3 Ne6 24. Rc1 Nf8 $5 {Black defends passively.} 25. Rc3 Ng6 26. Rd6
Rf6 27. Rd4 Nf8 $5 28. Ra3 Ra8 29. Bg2 Re6 30. Bf4 Ng6 $5 31. Bc7 d5 $1 32. Rc3
Rf6 33. h4 $6 (33. f4 $1 Re8 34. e3 {keeps the plus.}) 33... Rc8 $1 34. h5 $1
Rxc7 35. hxg6 Re7 $5 (35... Rxg6 $1 36. Rxd5 $1 Bxd5 $1 37. Rxc7 a5 {
draws easily.}) 36. Rxd5 Bxd5 $4 (36... Rxg6 37. Rd4 Kf7 {is alright.}) 37.
Rc8+ Rf8 38. Rxf8+ $1 {
White is going to queen.  Najdorf and Pilnik kept the lead.} (38. gxh7+ $2 Kxh7
$1 39. Rxf8 Bxa2 {draws (Stalicka).}) 1-0

[Event "Mar del Plata"]
[Site "7"]
[Date "1944.??.??"]
[Round "15"]
[White "Reed Valenzuela, Enrique"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "105"]
[EventDate "1944.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 Be7 7. O-O a6 8. Be3
Qc7 9. a4 b6 10. f4 Bb7 11. Bf3 Nbd7 12. f5 $5 ({Theory is} 12. Qe1) 12... e5
$1 13. Nb3 g6 $5 ({Usual will become} 13... O-O $1 14. g4 h6) 14. g4 $5 gxf5
15. gxf5 O-O $6 {Najdorf seems to castle into danger.} 16. Bh6 Rfd8 17. Kh1 Kh8
18. Rg1 Rg8 19. Qe2 Nc5 20. Nd2 Rae8 21. Rxg8+ Nxg8 $6 ({Preferable is} 21...
Rxg8 22. Rg1 Qd7) 22. Be3 Bf6 23. Rg1 Ne7 24. Bg5 $6 ({Better is} 24. Qc4 $1 d5
$1 25. Nxd5 Bxd5 26. exd5 Nxf5 27. Bxc5 Qxc5 28. Qd3 {
and White has a positional advantage.}) 24... Bxg5 25. Rxg5 f6 26. Rg1 d5 $5 {
Black makes the liberating move.} 27. Nxd5 $5 ({Preferable is} 27. exd5 $1 Nxf5
28. b4) 27... Bxd5 28. exd5 Nxf5 29. Bh5 Rf8 30. Ne4 Nd4 $5 31. Qc4 Qe7 32.
Nxc5 Qxc5 33. Qxc5 bxc5 34. c3 $5 (34. d6 $1 Rd8 35. Bf7 e4 36. c3 Nc6 37. Be6
Ne5 38. d7 Nxd7 $1 39. Rd1 e3 40. Kg2 e2 41. Re1 Ne5 42. Rxe2 {is alright.})
34... Nf5 35. Be2 $2 {White spoils an equal endgame.} (35. b4 $1 cxb4 36. cxb4
Nd4 37. Rb1 Rd8 38. b5 {draws.}) 35... a5 36. Bb5 Nd6 37. Bd7 $2 (37. b4 $1
axb4 38. cxb4 cxb4 39. Rb1 f5 40. Rxb4 {tries to survive.}) 37... f5 $1 38. Re1
e4 39. Kg1 Kg7 $1 40. b4 $5 cxb4 41. cxb4 axb4 42. Rb1 Rb8 43. Bb5 Kf6 44. Rxb4
Ke5 45. Kf2 Rb6 46. Rb1 Kxd5 47. Rd1+ Ke5 48. Be2 Rb2 49. Ra1 f4 50. Ke1 f3 51.
Bf1 e3 52. a5 Rd2 53. Bh3 {The leaders won their last games. Final standings:
Najdorf and Pilnik 12/15, Guimard and Michel 101/2, Stahlberg 10, Maderna 81/2,
Pelikan and Rossetto 8, Flores and Garcia Vera 6, Luckis and Puiggros 51/2,
Iliesco and Reed Valenzuela 5, Liebstein 4, Villegas 31/2.} 0-1

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "1"]
[White "Rossetto, Hector"]
[Black "Luckis, Marcos"]
[Result "1-0"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

{The eighth international chess event was played in Mar del Plata from 12
until 28 iii 1945. Sixteen men participated. The tournament booklet was
written by Stalicka and published by Lachaga in 1977.} 1. d4 Nf6 2. Nf3 b6 3.
e3 Bb7 4. Bd3 c5 5. Nbd2 e6 6. O-O Be7 7. b3 O-O 8. Bb2 d5 9. Ne5 Nbd7 10. f4
Ne4 11. c4 $5 (11. Nxd7 Qxd7 12. Nf3 {
drew in Delmar - Atkins, Cable match 1896.}) 11... f6 12. cxd5 $5 {
White makes a risky move.} (12. Nxd7 $1 Qxd7 13. cxd5 exd5 14. Nxe4 dxe4 15.
Bc4+ {gains a plus.}) 12... fxe5 ({The alternative brings} 12... Nxd2 $5 13.
Nf7 $1 Rxf7 14. dxe6 Nxf1 $5 15. Bxh7+ $1 Kxh7 16. Qh5+ Kg8 17. Qxf7+ Kh8 18.
Qh5+ {and perpetual check.}) 13. Nxe4 exd5 14. Ng3 e4 15. Be2 cxd4 $5 16. Bxd4
Bc5 $6 ({Preferable is} 16... Nf6) 17. Rc1 Rc8 $6 18. Bg4 $1 {
He pins the knight.} Bxd4 19. Qxd4 Rxc1 20. Rxc1 {
White controls the central area.} Nf6 $6 (20... Nc5 $1 21. b4 Nd3 22. Rc3 Kh8 {
defends well.}) 21. Be6+ Kh8 22. Qe5 d4 $2 (22... Ne8 $1 23. Nf5 Qf6 24. Bc8
Ba8 {prevents a disaster.}) 23. exd4 Re8 24. Nf5 $1 Bd5 25. Nxg7 $1 Kxg7 26.
Rc7+ {Rossetto carried out an excellent attack.} ({The pointe is} 26. Rc7+ Kh8
27. Rc8 $1 {and White wins.}) 1-0

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "2"]
[White "Hounie Fleurquin, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A68"]
[Annotator "JvR"]
[PlyCount "48"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. d5 O-O 7. Nf3 e6 8. Bd3 exd5
9. cxd5 b5 $5 {Najdorf makes a surprising sacrifice.} ({Theory is} 9... Re8)
10. e5 $1 {White counterattacks.} (10. Bxb5 $5 Nxe4 11. Nxe4 Qa5+ 12. Kf2 Qxb5
13. Nxd6 Qb6 {drew in Wood - Evans, Hastings 1949.}) 10... dxe5 11. fxe5 Ng4
12. Bg5 $6 {He should have been more pragmatic this time.} (12. Bxb5 $1 Nxe5
13. O-O {will win in Van Scheltinga - Duaro, Dublin 1957.}) 12... Qb6 13. Qe2
$2 ({Preferable is} 13. Bxb5 a6 14. Be2) 13... c4 $5 14. Be4 b4 $5 15. Na4 Qb5
16. d6 $5 {White becomes desperate.} Nc6 17. h3 $6 (17. Be7 Re8 18. O-O Nxe7
19. Bxa8 Nf5 $1 {also wins for Black.}) 17... Ngxe5 $1 18. Nxe5 Bxe5 19. O-O-O
({The pointe is} 19. Bxc6 Bg3+ $1 20. Kf1 Qxc6) 19... Bd7 20. Bd5 Rae8 21. Qc2
Nd4 22. Bxc4 Qxa4 23. Qf2 Rc8 24. b3 Nxb3+ $1 {Najdorf charged elegantly.} (
24... Nxb3+ 25. axb3 Qxb3 {triumphs.}) 0-1

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "3"]
[White "Letelier Martner, Rene"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "C59"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8.
Be2 Be7 $5 ({The main line of the Two Knights} 8... h6 $1 9. Nf3 e4 10. Ne5 Qd4
11. f4 Bc5 12. Rf1 {was played in Anderssen - Suhle, Breslau 1859.}) 9. d3 O-O
10. Nc3 h6 11. Nge4 Nd5 12. O-O f5 13. Ng3 Nf4 $6 ({Preferable is} 13... Nxc3
14. bxc3 Qc7) 14. Bf3 $1 Ba6 15. a3 Qc7 16. b4 Nb7 17. Re1 Rad8 18. Bd2 $5 Bg5
19. a4 $6 Nd6 $6 (19... e4 $1 {counters.}) 20. h4 $5 ({Not} 20. Rxe5 $2 Nc4 $1)
20... Bf6 $1 21. Ra3 Bxh4 22. Rxe5 Nc4 $1 23. Rc5 Nxa3 24. Rxc6 Qe5 25. Rxa6
Bg5 $2 26. Rc6 $2 (26. Ra5 $1 {wins at once.}) 26... Ne6 27. Bxg5 $6 (27. Nce2
$1 Bxd2 28. Qxd2 Qa1+ 29. Nf1 {favours White.}) 27... hxg5 28. Bh5 $2 {
White allows an attack on the queenside.} (28. Qe2 Qxe2 29. Ngxe2 {
keeps an edge.}) 28... Rc8 $1 29. Rxc8 Rxc8 30. Nb5 $5 Nxb5 {
Black gets rid of his imprisoned knight.} 31. axb5 g4 32. Bg6 Nd4 $1 33. c3
Rxc3 34. Qa1 Rc7 35. Qa2+ Kh8 36. b6 Rc1+ $1 37. Kh2 Qf6 $1 {
White will be mated.} 0-1

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "5"]
[White "Letelier Martner, Rene"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A47"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. O-O Qc8 $5 ({Usual is} 5... e6) 6.
dxc5 bxc5 7. c4 g6 8. Nc3 Bg7 9. Qd3 O-O 10. e4 Nc6 11. h3 $5 d6 12. Be3 Nb4
13. Qb1 Rb8 14. a3 Nc6 15. Qc2 Nd7 16. Rad1 Re8 17. Rd2 $2 ({Correct is} 17. b3
$1 Ba6 18. Nd5) 17... Ba6 18. b3 Na5 19. Rb1 Bxc3 20. Qxc3 Nxc4 $1 {
Najdorf gains  a pawn.} 21. Bh6 f6 22. Rdd1 Nce5 $2 (22... Nxa3 $1 23. Ra1 Be2
$1 {wins another pawn.}) 23. Nd2 Nf7 24. Be3 Bb5 25. f4 Qa6 26. a4 $6 Be2 $1
27. Re1 Qd3 28. Rbc1 Qxc3 29. Rxc3 Ba6 30. Kf2 Kg7 31. Nb1 Rb4 32. Nd2 Rc8 33.
h4 Nb8 34. h5 $5 Nc6 35. Bh3 Rcb8 36. Be6 $5 Na5 37. e5 $5 fxe5 38. fxe5 Nc6 $2
(38... Nxe5 39. Bxc5 $1 Nd3+ $1 40. Rxd3 Bxd3 41. Bxb4 Rxb4 {
makes useful exchanges.}) 39. exd6 exd6 40. Bf4 $2 (40. Bxf7 $1 Kxf7 41. hxg6+
hxg6 42. Bf4 {will regain the pawn.}) 40... g5 41. Bxf7 $1 gxf4 42. Be6 Ne5 43.
Bf5 fxg3+ 44. Kxg3 Kh6 45. Rxe5 dxe5 46. Rxc5 Rg8+ 47. Kh3 Rf4 48. Rc6+ Kxh5 $1
{Najdorf and Stahlberg shared the lead.} 0-1

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "7"]
[White "Guimard, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "D15"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 dxc4 5. e3 b5 6. a4 b4 7. Na2 e6 8. Bxc4
Nbd7 9. O-O Bd6 $5 ({Usual is} 9... Bb7) 10. Re1 $1 Qe7 11. e4 e5 12. Ng5 O-O
13. f4 $1 {White's attack in the centre looks dangerous.} Bc7 $1 {
Miguel defends wonderfully.} 14. Bb3 $1 ({The pointe is} 14. fxe5 $5 Nxe5 15.
dxe5 Ng4 $1 16. Qb3 Bb6+ 17. Kh1 Nf2+ 18. Kg1 Nh3+ {
and Black delivers perpetual check.}) 14... a5 15. h3 $2 ({Better is} 15. fxe5
Nxe5 $1 16. dxe5 Ng4 17. Rf1 Qc5+ 18. Kh1 Nf2+ 19. Rxf2 Qxf2 20. Qg1 $1 Qxg1+
21. Kxg1 Bxe5 {and the chances are almost equal.}) 15... Bb6 $1 16. fxe5 $6 (
16. Be3 exd4 17. Bxd4 Bxd4+ 18. Qxd4 Nc5 {brings a black advantage.}) 16...
Nxe5 $1 17. Be3 Ng6 $2 (17... Rd8 $1 {conquers the centre.}) 18. e5 Nd5 19.
Bxd5 cxd5 20. Qh5 $5 h6 21. Nf3 Qe6 {Najdorf has a plus.} 22. Nc1 Ne7 23. Nd3
Qg6 24. Qxg6 fxg6 25. Kh2 g5 26. Nc5 g4 27. hxg4 Bxg4 28. Nd2 $5 Rac8 $5 29.
Rac1 Rc6 30. Rf1 Rxf1 31. Nxf1 Ng6 32. Nd2 Kf7 33. Kg3 h5 34. Ndb3 Ne7 35. Bf2
Nf5+ 36. Kh2 Ke7 37. Kg1 $5 Be2 38. Nd2 g5 39. Ndb3 $2 (39. g3 $1 g4 40. Kg2 {
resists properly.}) 39... g4 $1 40. g3 h4 $1 41. gxh4 g3 42. Be3 Nxe3 43. Re1
Nf5 44. Rxe2 Rh6 45. Kg2 Rxh4 46. Kf3 Rxd4 $1 47. e6 Bc7 48. Re1 Rf4+ 49. Kg2
Rf2+ 50. Kh3 g2 51. Rg1 Ne3 52. Nd4 Rf6 53. Kh4 Bf4 {
Najdorf led by a score of 6/7.} 0-1

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "7"]
[White "Michel, Paul"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "C86"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Qe2 b5 7. Bb3 d6 8. a4
Bg4 9. c3 O-O 10. Rd1 d5 11. d3 d4 $5 (11... Na5 {
drew in Reinfeld - Reshevsky, Syracuse 1934.}) 12. h3 Bxf3 13. Qxf3 Na5 14. Bc2
c5 15. Nd2 Qc7 16. Qe2 $5 {The white development goes slowly.} Rac8 $6 {
The queen's rook should stay on the a-file.} 17. axb5 axb5 18. Nf3 Nd7 19. Bd2
$1 {All white pieces have moved.} dxc3 20. bxc3 Ra8 21. Rdc1 Bf6 22. d4 $6 c4
$2 (22... Nc4 $1 23. d5 Ndb6 24. Bd3 Be7 {defends solidly.}) 23. dxe5 Nxe5 24.
Nd4 Rab8 $5 25. f4 $1 {The attack begins.} Nec6 26. e5 Be7 27. Qe4 g6 28. f5 $1
Rfe8 $6 (28... Nb3 $5 29. Nxb3 cxb3 30. Bxb3 Nxe5 31. Bf4 Bd6 32. Bxe5 Bxe5 33.
fxg6 hxg6 34. Qxg6+ {also wins for White.}) 29. e6 $1 Bd6 30. Nxc6 Nxc6 31.
exf7+ Kxf7 32. fxg6+ Kg7 33. Qh4 h5 34. Qg5 Nd8 35. Qh6+ Kg8 36. Re1 Ne6 37. g7
$1 Qxg7 38. Rxe6 Qxh6 39. Rxe8+ Rxe8 40. Bxh6 Re2 41. Bg6 Bc5+ 42. Kf1 Rf2+ 43.
Ke1 Rf6 44. Ra8+ Bf8 45. Rxf8+ {
The pawn avalanche in the centre crushed the black resistance.} 1-0

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "8"]
[White "Bolbochan, Jacobo"]
[Black "Luckis, Marcos"]
[Result "1-0"]
[ECO "E22"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 Nc6 5. Nf3 d5 6. a3 dxc4 7. Qxc4 Be7 $5 ({
The spectacular} 7... Qd5 8. Qxb4 Nxb4 9. Nxd5 Nbxd5 {
was played in Alatortsev - Romanovsky, Moscow 1944.}) 8. e4 $1 O-O 9. Be2 Bd7
10. e5 $5 Ne8 $2 {Luckis misses a hidden resource.} (10... Nd5 $1 11. Nxd5 exd5
12. Qxd5 Bg4 $1 13. Qxd8 Raxd8 14. Be3 Bxf3 15. Bxf3 Nxd4 {equalises.}) 11. O-O
Na5 12. Qa2 b6 13. Rd1 c6 14. Bd3 Nc7 15. b4 Nb7 16. Qc2 h6 17. Qe2 Nd5 18. Qe4
f5 19. exf6 Nxf6 20. Qe2 Nd6 21. Ne5 Nf5 $5 22. Ne4 $6 (22. Nxc6 $1 Bxc6 23.
Qxe6+ Kh8 24. Bxf5 {gains material.}) 22... Nd5 $5 {
Many inaccurate moves are made.} 23. Bc2 Bf6 $5 24. Bb2 $5 Be8 25. g3 Rc8 26.
Bb3 Nd6 27. Ng4 Be7 28. Re1 Nf5 29. Rad1 Kh8 30. Nd2 $5 Bh5 31. h3 Rf6 32. Nf3
Bxg4 $2 ({Correct is} 32... Rf8 $1) 33. hxg4 Nd6 34. Bc2 Nf7 35. Nh4 Ng5 $5 36.
Kg2 $5 Bd6 $5 37. Ng6+ Kg8 38. f4 Bxf4 39. gxf4 Nxf4+ $5 40. Nxf4 Rxf4 41. Rf1
Qd5+ 42. Kg3 Rf6 43. Bc1 Rcf8 44. Bxg5 Qxg5 45. Qe4 g6 46. Rxf6 Rxf6 47. Qe5
Qxe5+ 48. dxe5 Rf7 49. Rd6 {The Bolbochan brothers scored well.} 1-0

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "9"]
[White "Pilnik, Herman"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "D68"]
[Annotator "JvR"]
[PlyCount "105"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 Nbd7 6. e3 O-O 7. Rc1 c6 8. Bd3
dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. Qc2 exd4 14. Nxd4
$5 Nf6 15. f3 c5 16. Ne2 Be6 17. e4 Bxc4 18. Rxc4 b6 {The chances are equal.}
19. Ng3 g6 20. f4 Rad8 21. e5 Nd5 22. Qe2 f5 $5 23. Rcc1 Nb4 24. a3 $6 Nc6 $6 (
24... Nd3 $1 25. Rc3 Qd7 {takes an advantage.}) 25. b4 $1 Nd4 26. Qc4+ Ne6 27.
Rfd1 Kg7 28. Ne2 Rd7 29. bxc5 Rxd1+ $5 30. Rxd1 Qxc5+ 31. Qxc5 Nxc5 32. Nc3 {
White has the initiative.} Ne6 33. g3 Rd8 34. Rxd8 Nxd8 35. Kf2 Kf7 36. Ke3 Ke6
37. Nb5 Nc6 38. Nd4+ $1 Kd5 39. Nxc6 Kxc6 40. Kd4 {
Pilnik plays for a win in the pawn ending.} a6 41. h3 h6 42. g4 fxg4 $4 {
Gideon blunders in a difficult position.} ({Right is} 42... b5 $1 43. gxf5 gxf5
44. h4 h5 45. a4 bxa4 46. Kc4 a5 $1 {and Black escapes.}) 43. hxg4 Kd7 44. Kd5
h5 45. f5 $1 h4 46. e6+ Kc7 47. fxg6 $1 h3 48. e7 h2 49. e8=Q h1=Q+ 50. Qe4
Qd1+ 51. Ke6 Qd7+ 52. Kf6 Qd2 53. g7 {
Najdorf could take the lead by one point due to the loss of Stahlberg.} 1-0

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "10"]
[White "Pelikan, Jorge"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "E18"]
[Annotator "JvR"]
[PlyCount "137"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7. Nc3 Ne4 8. Bd2
f5 9. d5 Bf6 {They reached this position twice in 1944.} 10. Rc1 $5 {
This will become the main move in this variation.} Na6 11. Qc2 Re8 12. Rfd1 Qe7
13. a3 c6 $2 ({Preferable is} 13... c5 $1) 14. dxe6 $5 Qxe6 15. Nxe4 Qxe4 $6 (
15... fxe4 16. Ng5 Bxg5 17. Bxg5 d5 18. b4 c5 {defends more actively.}) 16. Bg5
Qxc2 17. Rxc2 Bxg5 18. Nxg5 Rad8 19. Rd6 $1 Re7 20. Rcd2 Nb8 $5 {
Black suffers from restraint.} 21. e3 Rde8 22. h4 a5 23. b4 h6 24. Nh3 $5 axb4
25. axb4 Ba6 26. b5 cxb5 27. cxb5 Bxb5 28. Bd5+ Kh7 29. Rxb6 Bc6 $1 30. h5 Bxd5
31. Rxd5 Rf7 32. Rb7 g6 $5 33. hxg6+ Kxg6 34. Nf4+ Kh7 35. Rd6 Rc8 36. Nd5 Kg7
(36... Rc6 37. Rxc6 Nxc6 38. Rxd7 $1 Rxd7 39. Nf6+ {gains a pawn.}) 37. Nf4 Rc6
38. Rd5 Rc8 39. Kg2 Re8 40. Rd6 Ref8 41. Rbb6 $1 Nc6 42. Rbxc6 $1 dxc6 43. Ne6+
Kh7 44. Nxf8+ Rxf8 45. Rxc6 {Pelikan has an extra pawn in the rook ending.} Kg7
46. Kf3 Rf7 47. Re6 Rf8 48. Kf4 Rf7 49. f3 Rf8 50. Re5 Kg6 51. g4 fxg4+ 52.
Kxg4 Rf6 53. f4 Ra6 54. e4 Kg7 55. f5 Ra1 56. Re7+ Kf6 57. Re6+ Kg7 58. Rg6+
Kh7 59. Kf4 Rf1+ 60. Ke5 Re1 61. Rg2 h5 62. f6 Rf1 63. Rg5 Ra1 64. f7 Ra8 65.
Kf6 Ra6+ 66. Kf5 Ra8 67. e5 h4 68. Rg4 Kh6 69. Rg8 {
Stahlberg trailed two points on Najdorf.} 1-0

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "11"]
[White "Pilnik, Herman"]
[Black "Bolbochan, Julio"]
[Result "1-0"]
[ECO "D41"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. g3 Nc6 7. Bg2 cxd4 8.
Nxd4 Nxc3 9. bxc3 Nxd4 10. Qxd4 Be7 $5 ({Known is} 10... Qxd4 11. cxd4 Bd6) 11.
O-O ({The pointe is} 11. Qxg7 $4 Bf6) 11... O-O 12. Qxd8 Rxd8 13. Rb1 {
White pressures on the queenside.} Bf6 $2 {He misses the liberation.} (13... e5
$1 14. Be3 $1 (14. Bxb7 Rb8 15. Be4 Rxb1 16. Bxb1 Ba6 17. Re1 Bxe2 $1 {
counters.}) 14... Rb8 15. Bxa7 Ra8 16. Bb6 Rd2 17. Be3 Rxe2 18. Bxb7 Bxb7 19.
Rxb7 Bf8 20. a4 Ra2 {
lifts the restraint and regains the pawn. White keeps a plus.}) 14. c4 $1 Rd4
$6 (14... Rd7 $5 15. Be3 Rc7 16. c5 {favours White.}) 15. c5 $1 a5 16. Be3 Rb4
17. a3 $1 Rc4 18. Rfd1 g5 $5 {Black becomes desperate by the restriction.} 19.
Bxb7 Bxb7 20. Rxb7 {Pilnik has won a pawn.} a4 $5 21. Rdd7 Rf8 22. Kg2 Kg7 23.
Ra7 Bb2 24. Bxg5 Bxa3 25. Be7 Rg8 26. Bd6 Kg6 27. Rxf7 Bb2 ({Or} 27... Bxc5 28.
Bxc5 Rxc5 29. Rxh7 $1) 28. Rxh7 a3 29. Rhe7 Kf5 30. c6 $1 Bf6 $5 31. Rec7 Rc2
32. Rxa3 Rxe2 33. Rf3+ Kg6 34. Rd7 Rc8 35. c7 Ra2 36. h4 Ra5 37. Be7 Be5 38.
Bg5 Bxc7 39. Rf6+ {
Black will be mated in two.  Pilnik had climbed to the third place.} 1-0

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "13"]
[White "Michel, Paul"]
[Black "Iliesco, Juan"]
[Result "1-0"]
[ECO "B70"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O Nc6 8.
Nb3 O-O 9. f4 a5 10. a4 Be6 $5 ({Known is} 10... Qb6+ $1) 11. Bf3 Bxb3 12. cxb3
Qb6+ 13. Kh1 e5 $5 14. Nb5 $5 Nd4 $6 ({Better is} 14... Rad8) 15. Be3 $1 {
White takes the initiative.} Nd7 16. g4 Rac8 17. f5 Rfd8 $6 (17... Nc5 $1 18.
b4 $1 axb4 19. Nxd4 exd4 20. Bxd4 Be5 {offers more resistance.}) 18. g5 $1 Qc5
$5 19. f6 $1 Bf8 20. Bg4 {Iliesco faces a positional disaster.} Qc2 21. Nxd4
exd4 22. Qxd4 Qxb3 23. Rac1 $6 {Exchanges bring Black back into the game.} Rxc1
24. Rxc1 Ne5 25. Bd1 Qe6 26. Be2 d5 $5 27. Rd1 $5 Nc6 $6 (27... Ng4 $1 28. exd5
Qxe3 29. Qxg4 Bd6 {defends well.}) 28. exd5 $1 Qh3 $2 (28... Qe8 $1 29. Qf4 Bd6
30. Qf2 Nb4 {regroups the black pieces.}) 29. Bg4 $1 Qh4 (29... Nxd4 30. Bxh3
Ne6 31. Bb6 {wins for White.}) 30. Qf4 Ne5 31. Be2 $1 Qh3 32. Bd4 Nd7 33. Rd3
Qf5 34. Qxf5 gxf5 35. Rc3 Bd6 36. Bb5 Ne5 37. Bb6 Ra8 38. Bc7 Bxc7 39. Rxc7 h6
40. d6 hxg5 41. d7 Nxd7 42. Bxd7 {Michel had completed a devastating attack.}
1-0

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "14"]
[White "Najdorf, Miguel"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D68"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

{Najdorf led by 11/2 points on Stahlberg and Pilnik.} 1. d4 Nf6 2. Nf3 d5 3. c4
e6 4. Nc3 Be7 5. Bg5 Nbd7 6. e3 O-O 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7
Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. Bb3 e4 14. Nd2 Nf6 15. Qc2 Bg4 16. Re1 {
They play a quiet line of the Orthodox Queens Gambit.} Kh8 $5 (16... Rfe8 {
happened in Stahlberg - Thomas, Margate 1936.}) 17. a3 Rae8 18. Nf1 $5 {
Najdorf defends.} Be6 19. Bxe6 Qxe6 20. b4 Nd5 21. Rc5 a6 22. Ng3 f5 $1 {
Stahlberg takes the initiative.} 23. Qd2 Qh6 $1 24. a4 ({Stalicka prefers} 24.
Ne2 $5 {but the text is alright.}) 24... f4 $1 25. exf4 Nxf4 26. Re3 $2 {
White misses the clever escape.} ({Correct is} 26. Rd1 $1 e3 27. fxe3 Rxe3 $1
28. Nf5 $1 Qg6 29. Nxe3 Nh3+ 30. Kh1 Nf2+ 31. Kg1 Nh3+ {
and Black delivers perpetual check.}) 26... Nd5 $1 27. Re2 Qxd2 28. Rxd2 e3 $1
29. fxe3 Rxe3 {He penetrates the white position.} 30. Rc1 $6 (30. Rf2 Re1+ 31.
Nf1 {offers more resistance.}) 30... Nxb4 31. Nf1 $6 Ra3 $1 32. Re1 Kg8 33. Re7
b6 34. h4 Ra1 35. Rf2 Rxa4 36. Rxf8+ Kxf8 37. Rb7 Nd5 38. Ng3 Rxd4 39. Nf5 Re4
40. Nd6 Re6 41. Rf7+ Kg8 42. Rd7 h6 43. Nf5 Rf6 {
Najdorf's lead had shrunk to half-a-point at the end of the penultimate round.}
0-1

[Event "Mar del Plata"]
[Site "8"]
[Date "1945.??.??"]
[Round "15"]
[White "Stahlberg, Gideon"]
[Black "Iliesco, Juan"]
[Result "1-0"]
[ECO "E91"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1945.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Bg4 7. O-O Nc6 8. d5
$5 (8. Be3 e5 9. d5 Ne7 {was played in Vidmar - Balla, Budapest 1940.}) 8...
Bxf3 9. Bxf3 Ne5 10. Be2 $1 {White has gained an advantage.} Ned7 11. Be3 Nc5
12. Bxc5 dxc5 13. e5 $1 Ne8 14. f4 f6 15. Ne4 $6 b6 $6 16. Qd3 $5 (16. f5 $1
fxe5 $5 17. fxg6 Rxf1+ 18. Bxf1 hxg6 19. Qg4 {wins for White.}) 16... fxe5 17.
Ng5 $5 Qd7 ({The pointe is} 17... exf4 18. Qh3 $1 h6 19. Ne6) 18. Ne6 $1 Rxf4
$5 {Black sacrifices an exchange.} (18... Rf7 19. fxe5 Bxe5 20. Rxf7 Kxf7 21.
Rf1+ Bf6 22. g4 Kg8 23. g5 {brings a decisive attack.}) 19. Nxf4 exf4 20. Rxf4
Bd4+ 21. Kh1 {White threatens 22.Bg4.} Nf6 22. Rb1 a5 23. b3 Qd6 24. Rbf1 Be5
25. Rh4 a4 26. Bg4 Nxg4 27. Rxg4 axb3 28. axb3 Ra3 $6 ({Or} 28... c6 $5 29. Qe2
$1 cxd5 30. Rg5 Bf6 31. Rxd5) 29. Re4 $1 Bf6 30. Qh3 b5 $5 31. Qc8+ $1 Kg7 32.
g3 $1 {The restriction of the black queen increases.} bxc4 33. bxc4 Qb6 34. Qd8
Qd6 35. Qe8 $1 Rd3 36. Re6 $1 {A queen has been caught. The top remained
unchanged, because Najdorf and Pilnik won too.   Final standings: Najdorf 11/
15. Stahlberg and Pilnik 101/2, Julio Bolbochan and Michel 91/2, Luckis and
Rossetto 9, Jacobo Bolbochan 8, Maderna 71/2, Pelikan 7, Iliesco 61/2,
Letelier 6, Hounie Fleurquin 51/2, Guimard and Sanguinetti 4, Giustina 21/2.}
1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "1"]
[White "Stahlberg, Gideon"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "E21"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

{The second Grau Memorial was played in Buenos Aires from 5 until 29 v 1945.
Circulo de Ajedrez organised the tournament of 13 men. Grau died in 1944. His
first Memorial took place in Buenos Aires that year.} 1. d4 Nf6 2. c4 e6 3. Nc3
Bb4 4. Nf3 b6 5. Qb3 c5 6. a3 Ba5 $5 (6... Bxc3+ 7. Qxc3 Ne4 8. Qc2 Bb7 {
was played in Rabinovich - Zubarev, Moscow 1925.}) 7. Bd2 O-O 8. e3 d5 9. Be2
cxd4 10. Nxd4 e5 $1 11. Nf3 d4 $1 12. Nd5 Bxd2+ 13. Nxd2 Nxd5 14. cxd5 Nd7 15.
O-O $5 Nc5 $1 16. Qd1 $6 {Stahlberg makes a passive move.} dxe3 $6 (16... Qxd5
17. Bc4 Qd6 18. b4 Ne6 {grabs a pawn.}) 17. fxe3 Qg5 18. Rf3 e4 19. Rf4 Qxd5
20. Bc4 $1 {White does not regain the pawn yet.} Qd7 $5 21. Qh5 $1 {
He strengthens the attack.} Ba6 22. Ba2 $5 h6 $5 23. Nf1 $5 Rae8 24. Ng3 Nd3 $5
25. Rg4 $2 (25. Rf6 $1 Ne5 26. Nf5 gxf6 27. Nxh6+ Kg7 28. Nf5+ Kg8 {
leads to perpetual check.}) 25... Re5 $4 {The tables turn.} (25... Bc8 $1 26.
h3 Kh7 $1 {counters strongly.}) 26. Qg6 $1 {Suddenly, the game is over.} (26.
Qg6 Rg5 27. Rxg5 hxg5 28. Nh5 {mates quickly (Stalicka).}) 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "2"]
[White "Pelikan, Jorge"]
[Black "Maderna, Carlos"]
[Result "1-0"]
[ECO "A03"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. d4 Bg7 5. Bd3 O-O 6. O-O c5 7. c3 Nc6 8. Nbd2
Qb6 $5 9. Qe1 {Pelikan applies the Stonewall with reversed colours.} Bd7 10.
Kh1 e6 $5 {Maderno develops slowly.} 11. Qh4 cxd4 12. exd4 Na5 $5 (12... Ne7 $1
{prepares the defence ..Nf5.}) 13. Ne5 Bb5 14. Rf3 Bxd3 15. Rxd3 Qa6 16. b4 $5
Nc6 17. a4 $2 b5 $2 ({The queen sacrifice by} 17... Nxe5 $1 18. b5 {(Stalicka)}
Qxa4 $1 19. Rxa4 Nxd3 {favours Black.}) 18. a5 Rac8 19. Nb3 $1 Nxe5 20. fxe5
Ne4 21. Rh3 h5 22. Nc5 $1 {White attacks first.} Nxc5 23. bxc5 b4 $2 {
Black starts a dangerous counter but fails.} (23... f6 $1 24. exf6 Rxf6 25. Bf4
b4 $1 26. cxb4 Qc4 27. Be3 Rcf8 {brings chances for both sides.}) 24. Bg5 $1 ({
Not} 24. cxb4 $4 Qf1#) 24... b3 25. g4 $1 b2 26. Rb1 Qe2 {He threatens ..Qe4+.}
27. gxh5 $1 Qc2 28. Qe1 gxh5 $2 (28... Qf5 29. Rg3 Rb8 30. h6 Bh8 {
offers more resistance.}) 29. Rg3 Kh7 30. Rg2 $1 Qf5 31. Rbxb2 Rb8 32. Rb4 Rg8
33. Qe2 Bh6 34. h4 Rxb4 35. cxb4 Qb1+ 36. Kh2 Qg6 37. b5 Rb8 38. Bxh6 {
Pelikan charged well in the Bird.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "3"]
[White "Falcon, Enrique"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "E17"]
[Annotator "JvR"]
[PlyCount "50"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. c4 Be7 6. Nc3 O-O 7. d5 $5 {
Falcon plays a sharp novelty.} ({Theory is} 7. O-O) 7... Bb4 $1 8. O-O Bxc3 9.
bxc3 d6 ({The alternative is} 9... exd5 $5 10. Nh4 $1) 10. Nd4 e5 ({Or} 10...
exd5 $5 11. Nf5 Qd7 12. Ne3 $1 {and White regains the pawn.}) 11. Nf5 Ba6 12.
Ne3 $5 Nbd7 13. a4 $6 {He spoils time.} Nc5 14. a5 Qd7 15. Ba3 Ng4 16. Bxc5 $6
({Better is} 16. Nxg4 Qxg4 17. axb6 axb6 18. Bxc5 bxc5 19. Ra4 {
and the white queen's rook remains active.}) 16... bxc5 $1 17. Nxg4 Qxg4 18.
Ra4 {Now the rook becomes passive.} f5 19. Bf3 Qg6 20. e3 f4 $1 21. e4 Rab8 $1
{Black attacks on the flanks.} 22. Qd3 $6 Rb2 $1 23. Raa1 Qh6 $1 24. Be2 $2
Rxe2 $1 25. Qxe2 f3 {Guimard threatens mate in two.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "3"]
[White "Najdorf, Miguel"]
[Black "De Ronde, Chris"]
[Result "1-0"]
[ECO "D96"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

{Chris de Ronde came as a reserve of the Dutch team to Buenos Aires. He stayed
in Argentina.} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 c6
7. e4 b5 8. Qb3 Qa5 $5 (8... O-O {
was played in Landau - De Ronde, Amsterdam 1939.}) 9. Bd3 Be6 10. Qd1 $5 O-O
11. O-O Rd8 12. h3 c5 $1 13. d5 c4 {Both players are not shy.} 14. Bc2 (14.
dxe6 $5 fxe6 15. Bxc4 Rxd1 16. Bxe6+ Kh8 17. Rxd1 Nc6 {
gains little advantage for White.}) 14... Bc8 15. Bd2 b4 16. Na4 Qb5 $5 17. Qc1
$5 a5 $6 (17... Bb7 18. Bh6 Nbd7 {develops the queenside.}) 18. Nd4 Qb7 19. Be3
Bd7 20. Nc5 $1 Qc8 21. Nxd7 Qxd7 22. Rd1 Rc8 23. Qd2 Ne8 24. Qe2 a4 25. Rac1 a3
26. b3 c3 {The attack on the queenside is stuck.} 27. Bd3 Bxd4 $6 28. Bxd4 Nd6
$5 29. g4 Ne8 $5 30. f4 e6 31. f5 exd5 32. fxg6 fxg6 $2 ({Better is} 32... hxg6
33. exd5 Nc6 34. Bxc3 bxc3 35. dxc6 Qxc6) 33. exd5 Ng7 ({The pointe is} 33...
Qxd5 $4 34. Bc4) 34. Bc4 Re8 35. Qf3 Qd6 36. Rf1 $1 Rf8 37. Qxf8+ Qxf8 38. d6+
$1 {Najdorf won his third game.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "4"]
[White "Czerniak, Moshe"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "B75"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f3 g6 7. Be3 Bg7 8. Qd2
Be6 $5 ({Usual is} 8... O-O) 9. O-O-O $5 a6 $5 10. Nxe6 $1 fxe6 {
Black has a weakness.} 11. Bc4 Qc8 $6 {Black overburdens his queen.} (11... Kf7
$1 12. Kb1 b5 {defends properly.}) 12. Na4 $1 Ne5 13. Bb3 Nc4 $1 14. Qe2 b5 15.
Bxc4 bxa4 $1 16. a3 d5 $6 17. Ba2 $1 Rb8 18. Bd4 $1 dxe4 19. fxe4 O-O 20. Qc4
Qxc4 21. Bxc4 Nxe4 22. Bxe6+ Kh8 23. Bxg7+ Kxg7 24. Rhe1 {
Czerniak has reached a won endgame.} Nc5 25. Bd5 Rfe8 $5 26. Re3 e6 27. Bc4 Rb6
28. g4 Rf8 29. Rf1 Rfb8 30. Re5 $1 Rc8 31. Re3 g5 32. Ref3 Rb7 33. Re1 Rb6 34.
Rc3 Rbc6 35. Bf1 Kf6 36. Bg2 R6c7 37. Kb1 Nd7 38. Rf3+ Ke7 $6 39. Rfe3 $1 e5
40. Rh3 $1 Rxc2 41. Rxh7+ Kd8 42. Be4 R2c4 43. Bf5 $5 R8c7 44. h4 $5 gxh4 45.
g5 Rf4 46. Rf7 $2 ({Correct is} 46. Bh3 $1) 46... Rxf5 $2 (46... Nb6 $1 47.
Rd1+ Rd4 48. Rxd4+ exd4 49. Rf6 Nc4 {fights for the last chance.}) 47. Rxf5 Rc4
48. Rf7 Ke8 49. Rg7 h3 50. Rc1 h2 51. Rh7 Nf8 52. Rxh2 Rg4 53. Rh8 Ke7 54. Rc7+
Kd6 55. Ra7 Ne6 56. Rh6 Kd5 57. Rd7+ {A favourite had lost.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "5"]
[White "Najdorf, Miguel"]
[Black "Michel, Paul"]
[Result "0-1"]
[ECO "D34"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O c5 5. d4 Nc6 6. c4 Be7 7. Nc3 O-O 8. cxd5
exd5 9. Bg5 Be6 10. dxc5 Bxc5 11. Rc1 Be7 12. Nd4 h6 13. Bf4 Qd7 14. Nxe6 fxe6
15. Bh3 Kh8 $5 {White exerts some pressure in the Tarrasch.} (15... g5 $5 {
was played in Capablanca - Olland, Hastings 1919.}) 16. Qd3 Nh7 $5 17. Ne4 $5
Rad8 18. Nc5 Bxc5 19. Rxc5 Qe7 20. Qa3 $5 e5 $1 21. Be3 d4 22. Bd2 Nf6 $1 23.
Bg2 e4 $1 {Black has the initiative.} 24. Rb5 Qd7 $5 {
Michel likes to attack. Exchange is fine too.} 25. Qb3 $6 ({Preferable is} 25.
Rc5 $1 b6 26. Rc4 {and the queen's rook assists in the defence of the centre.})
25... b6 26. a4 $6 Rfe8 27. Rd1 d3 $1 28. e3 $6 (28. Bc3 $1 Nd4 29. Bxd4 Qxd4
30. e3 {defends actively.}) 28... Ne5 $1 29. h3 Nf3+ $1 {
Black delivers the decisive blow.} 30. Kh1 (30. Bxf3 exf3 31. Kh2 Ne4 $1 {
wins for Black (Stalicka).}) 30... Nxd2 31. Rxd2 Rc8 32. Kh2 Rc1 33. Rb4 Qc7
34. a5 Rc2 $1 35. axb6 axb6 36. Rd1 Rxf2 37. Rxb6 Nh5 {
Michel defeated Najdorf again.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "6"]
[White "Pelikan, Jorge"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "E06"]
[Annotator "JvR"]
[PlyCount "186"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. O-O Be7 6. d4 O-O 7. Nc3 d5 8. Ne5
c6 9. e4 dxc4 10. Nxc4 Ba6 11. b3 b5 12. Ne5 b4 13. Ne2 Bxe2 14. Qxe2 Qxd4 15.
Bb2 Qb6 16. Rfd1 a5 17. Rac1 a4 18. Bd4 Qb7 $5 (18... c5 $6 19. Nc4 Qa6 {
occurred in Blümich - Ullrich, Bad Elster 1937.}) 19. f4 {
White has a sufficient compensation for the pawn.} axb3 20. axb3 Ra3 $5 21. Nc4
Ra6 22. g4 Rd8 23. Kh1 Ne8 24. f5 $5 Qc8 $5 25. Qf2 $5 c5 26. Be3 Rxd1+ 27.
Rxd1 Nd6 28. fxe6 $2 ({Better is} 28. Bxc5) 28... Qxe6 $1 29. e5 $2 Nxc4 30.
Bd5 $2 Qg6 $2 (30... Ra1 $1 31. Bxe6 Rxd1+ 32. Kg2 Nxe3+ 33. Qxe3 fxe6 {
wins for Black (Stalicka).}) 31. bxc4 $6 Nd7 32. Bb7 Ra7 33. Bd5 h6 34. Rf1
Nxe5 35. Bxc5 Rd7 36. Qf4 Bxc5 37. Qxe5 Bf8 38. Qe8 Re7 39. Qc8 $6 Qd3 $6 40.
Rf2 Re1+ 41. Kg2 Re7 42. Qf5 Qxf5 43. gxf5 Re3 44. f6 $5 gxf6 $2 (44... g6 $1 {
plays for a win.}) 45. Rxf6 Re2+ 46. Kf3 Re7 47. Rb6 Rc7 48. Ke4 Kg7 49. Kf5
Bc5 50. Rb5 Be7 51. Ra5 Bd6 52. Ra6 $5 Bxh2 53. Rb6 Re7 54. Kg4 $5 Bc7 55. Rxb4
Kg6 56. Rb1 $4 {Many mistakes are made in this game.} (56. Rb7 f5+ 57. Kh4)
56... Re3 $1 {Black theatens ..h5+ followed by ..Bd8#.} 57. Bxf7+ $5 {
White has to lose a bishop.} Kxf7 58. Rb7 Re7 59. Ra7 Kg6 60. Ra6+ Kg7 61. Ra7
Re4+ 62. Kh5 Rxc4 63. Ra4 Rc1 64. Rc4 $5 Rh1+ $1 ({Not} 64... Rxc4 $4 {
stalemate.}) 65. Kg4 Bd8 66. Kg3 Kg6 67. Rc6+ Kh5 68. Rc5+ Bg5 69. Rb5 Rg1+ 70.
Kh3 Rc1 71. Rb4 Rc3+ 72. Kg2 Bf6 73. Ra4 Kg5 74. Ra8 Kg4 75. Ra4+ Kf5 76. Ra8
Bg5 77. Rf8+ Kg4 78. Rf7 Rb3 79. Rf8 Rb7 80. Rf1 Bf4 81. Rf3 Rb2+ 82. Rf2 Rb3 {
He should not exchange the rooks.} 83. Rf1 Bg3 84. Rb1 Re3 85. Rb2 h5 86. Kh1
h4 87. Rg2 Rb3 88. Rg1 Kh3 89. Rg2 Rb1+ 90. Rg1 Rb2 91. Rf1 Rh2+ 92. Kg1 Rg2+
93. Kh1 Bf2 {Guimard competed for the first place after a poor start.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "7"]
[White "Maderna, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E19"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2
Nxc3 9. Qxc3 d6 10. Qc2 f5 11. Ne1 Qc8 12. e4 Nd7 13. Be3 $5 (13. exf5 exf5 14.
Qe2 {drew in Vidmar - Szabo, Budapest 1940.}) 13... fxe4 14. Bxe4 Nf6 15. Bxb7
Qxb7 16. Ng2 Rae8 17. Rae1 e5 {Black takes the initiative in the centre.} 18.
dxe5 dxe5 19. Bg5 Bc5 20. Bxf6 $5 Rxf6 21. Qe4 $5 c6 $5 {
Exchange of queens brings little advantage.} 22. Ne3 Qf7 23. Kg2 h5 24. h4 $5
Rd8 25. Rd1 Rf8 26. Rd2 Qe6 $5 27. b3 a5 28. Nc2 $2 (28. f3 $1 {defends well.})
28... Rf4 $1 {Najdorf finds the elegant refutation.} 29. Qd3 ({The pointe is} 
29. gxf4 Qg4+ 30. Kh2 Qxh4+ 31. Kg1 Rxf4) 29... e4 30. Qd7 Qxd7 {
White is going to lose material.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "8"]
[White "Michel, Paul"]
[Black "Pelikan, Jorge"]
[Result "1-0"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. f4 b5 8. Bf3
$1 ({Known is} 8. a3) 8... Ra7 $5 {Pelikan gives a witty answer.} ({
An alternative brings} 8... b4 9. e5 d5) 9. Be3 Rd7 $5 10. a3 Be7 11. O-O O-O
12. g4 {The charge on the king starts.} Bb7 13. g5 Ne8 14. Qd2 Nc6 15. Nxc6
Bxc6 16. f5 $1 exf5 17. exf5 d5 $2 {Black should exchange.} ({Correct is} 17...
Bxf3 18. Rxf3 d5) 18. Qg2 $1 Kh8 19. Rad1 Nd6 $5 20. Bxd5 Bxd5 21. Nxd5 Nc4 22.
Bc1 $6 ({Better is} 22. Bd4 $1) 22... Bc5+ 23. Kh1 Re8 $5 24. g6 $1 Qh4 $2 (
24... fxg6 $1 25. fxg6 Rd6 26. gxh7 Re5 $1 {defends well.}) 25. gxf7 $5 (25. f6
$1 {decides the game immediately.}) 25... Rxf7 26. f6 $1 Qe4 ({The pointe is} 
26... gxf6 27. Bg5 $1 {(Stalicka).}) 27. fxg7+ Rxg7 28. Qxe4 Rxe4 29. Nf6 Rd4
30. b3 Rxd1 31. Rxd1 Rf7 32. bxc4 {Michel played another great attack.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "8"]
[White "Najdorf, Miguel"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "C14"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. Qd2 O-O 8.
f4 c5 9. Nf3 Nc6 10. dxc5 f6 11. exf6 Nxf6 12. O-O-O Qxc5 {
Stahlberg plays his favourite line.} 13. Bd3 Bd7 14. Rhe1 Rac8 15. Kb1 $1 (15.
Ne5 {was played in Weiss - Burn, Frankfurt 1887.}) 15... a6 16. h3 Nb4 17. Ne5
Bb5 18. Nxb5 $5 axb5 19. f5 Nxd3 20. Nxd3 Qc7 $2 (20... Qc4 $1 21. fxe6 Ne4 22.
Qe2 Rf6 23. Ne5 Qa4 24. Qd3 Rxe6 25. Qxd5 Qxc2+ 26. Ka1 Nc5 {
regains the pawn in a difficult position.}) 21. fxe6 {
It will be hard for Black to win back pawn e6.} Ne4 22. Qc1 $5 Qd6 23. a3 Rcd8
$5 24. Qe3 Qxe6 25. Nf4 Qe5 26. Nxd5 $1 Rde8 $6 (26... Rxd5 27. Rxd5 Qxd5 28.
Qxe4 Qxe4 29. Rxe4 Rf1+ 30. Ka2 Rf2 {offers more resistance.}) 27. Qd3 Qh5 28.
g4 Qg6 29. Qxb5 Qh6 30. Ka1 Kh8 31. Nc7 Rc8 32. Rxe4 Rxc7 33. Re8 Rc8 34. Rxc8
Rxc8 35. Qxb7 Rg8 36. Qf3 Qg6 37. Qc3 h6 38. Rd7 Qe6 39. Qd4 Qc6 40. Qd3 Qf6
41. c4 {Stahlberg was out of the race for the first place. The competition for
the top continued between Najdorf and Guimard.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "9"]
[White "Maderna, Carlos"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D34"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. d4 d5 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg5 Be6 8. Bg2
Be7 9. O-O Ne4 10. Bxe7 Qxe7 11. Rc1 Nxc3 12. Rxc3 c4 13. Nh4 $6 ({
Michel encountered} 13. Ne5 {in other games.}) 13... Rd8 14. f4 f5 $6 (14...
Bg4 $1 15. Re1 O-O {gains an edge.}) 15. Re3 O-O 16. Nf3 Qd6 17. Ne5 b5 18. Qd2
Nxe5 19. Rxe5 $5 b4 20. Qe3 Rf6 21. h3 $5 Qc6 22. g4 $1 Bc8 $5 23. Rf3 $5 fxg4
24. hxg4 Bxg4 $2 {Michel falls into a trap.} ({Better is} 24... a5 $1 25. f5
Rf7) 25. Rg3 $1 h5 $6 26. Rxh5 $1 {Maderna delivers a fine refutation.} Re6 ({
The pointe is} 26... Bxh5 27. Qe7 Bf7 $5 28. Qxd8+ Kh7 29. Qf8 $1 {(Caissa).})
27. Re5 $1 Rxe5 28. Qxe5 Qd7 29. Qg5 $1 Bf5 30. Bxd5+ $1 Kf8 31. e4 c3 32. bxc3
bxc3 33. Qh4 g6 34. Qf6+ {White has a mate attack.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "10"]
[White "Maderna, Carlos"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D33"]
[Annotator "JvR"]
[PlyCount "92"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 c4 7. e4 {
They choose a sharp line of the Swedish Variation.} dxe4 8. Ng5 Be7 9. Bxc4
Bxg5 10. Qh5 Nh6 $5 ({Stahlberg diverts from} 10... g6 11. Qxg5 Nf6 {
(Opocensky - Stoltz, Bad Nauheim 1935).}) 11. Bxg5 $1 Bg4 $1 12. Qxg4 $5 ({
The spectacular} 12. Qh4 $5 Qxd4 13. Bxh6 Ne5 $1 14. Bb5+ Kf8 15. Be3 Qb4 16.
Kf1 Qxb2 17. Rc1 h5 {leads to chances for both sides.}) 12... Nxg4 13. Bxd8
Rxd8 14. d5 $6 (14. h3 $1 Nf6 15. d5 {keeps the equality.}) 14... Nce5 $1 15.
Be2 f5 16. h3 Nf6 17. O-O-O a6 18. g4 $2 (18. Rd4 $1 Nf7 19. f3 Nd6 20. fxe4
Nfxe4 21. Nxe4 fxe4 {makes useful exchanges.}) 18... fxg4 19. hxg4 Nexg4 20.
Bxg4 Nxg4 21. Nxe4 O-O 22. Rd2 Rde8 $1 23. Ng5 $6 (23. f3 Rxf3 24. d6 {
offers more resistance.}) 23... Rxf2 {Black has won a pawn.} 24. Rd4 Nf6 25.
Rg1 Rc8+ 26. Kb1 Rcc2 27. Rb4 b5 $1 28. Ne6 $5 g6 $5 29. Rd1 Rce2 30. a4 Nxd5
31. Rxd5 Rxe6 32. axb5 Rb6 33. Ka2 h5 34. Ka3 axb5 35. Rdxb5 Rxb5 36. Rxb5 h4
37. Rg5 Rf3+ $1 38. Ka4 Rg3 39. Re5 h3 40. Re2 Rg2 41. Re8+ Kg7 42. Re7+ Kh6
43. Re3 h2 44. Rh3+ Kg7 45. b4 g5 $1 46. b5 Rg4+ {
Stahlberg played a fine positional game.} 0-1

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "11"]
[White "Stahlberg, Gideon"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D34"]
[Annotator "JvR"]
[PlyCount "235"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O
O-O 9. dxc5 d4 10. Na4 Bf5 11. Bf4 Be4 12. b4 $5 ({Known is} 12. Rc1 Qd5 13. b3
) 12... d3 $5 13. exd3 $1 (13. b5 $5 dxe2 14. Qxe2 Nd4 15. Nxd4 Qxd4 {
will draw in Gligoric - Padevsky, Leipzig 1960.}) 13... Bxd3 14. Re1 Nxb4 15.
Qb3 Nfd5 16. Rad1 b5 $2 17. Nb2 $1 Bc2 18. Rxd5 $1 Qxd5 19. Qxb4 Bxc5 20. Qd2
$2 (20. Qc3 $1 Be4 21. Rxe4 $1 Qxe4 22. Qxc5 {gains material.}) 20... Be4 $1
21. Qxd5 Bxd5 {White has two minor pieces for a rook and pawn.} 22. Nd3 $5 Ba3
23. Nd4 Rad8 24. Be3 a6 25. Rb1 Rfe8 26. Bxd5 Rxd5 27. Rb3 Bf8 28. Nf4 Rd7 29.
Rc3 g6 30. Nb3 Bb4 31. Rc6 Rd6 32. Rc7 Red8 33. Kg2 R6d7 34. Rc6 Rd6 35. Rc7
R6d7 36. Rc6 Rd6 37. Rc2 a5 $5 38. Ne2 $1 Rd5 39. Bb6 Ra8 40. Nf4 Rd6 41. Be3
Ba3 $2 ({Correct is} 41... Rad8) 42. Nd4 $1 {Stahlberg attacks.} Rb8 43. Nfe2
Rd7 44. Nc3 Rdb7 45. Nd5 Rd8 46. Nf6+ Kg7 47. Ne4 $5 a4 48. Nc3 Rc8 49. Ncxb5
Rxc2 50. Nxc2 {White conquered a pawn.} Bb2 ({The pointe is} 50... Rxb5 51.
Nxa3 Rb2 $4 52. Bd4+ {(Stalicka).}) 51. Ncd4 Kf6 52. a3 $2 (52. Nd6 $1 Rb6 53.
N4b5 {wins for White.}) 52... Ke5 53. Kf3 $6 Kd5 54. Ke2 Bxd4 $2 {
Michel  misses the opportunity.} (54... Kc5 $1 55. Nf5+ Kxb5 56. Nd6+ Kc6 57.
Nxb7 Kxb7 58. Bc5 {draws.}) 55. Nxd4 Kc4 56. Nf3 Rb2+ 57. Nd2+ $1 Kc3 58. Bg5
Ra2 59. Bf6+ $1 Kc2 60. Be7 Rb2 61. Nc4 Rb7 62. Bb4 Rd7 63. Nb6 Ra7 64. Ke3 Kb3
65. Kd4 Rc7 66. Bc5 Rc6 67. Nc4 Ra6 68. Nd2+ Kc2 69. Ne4 Kb3 70. Bb4 Ra8 71.
Nc5+ Kc2 72. Kc4 Kd1 73. Kd3 Rd8+ 74. Ke3 Ra8 75. g4 Re8+ 76. Kf3 Ra8 77. g5
Kc2 78. h4 h5 $5 79. Ke3 Re8+ 80. Kf4 Re2 81. Kf3 Re5 82. Kg3 Re8 83. Nxa4 Kb3
84. Nc3 Kc4 85. Kf4 Re1 86. f3 Rh1 87. Kg3 Rg1+ 88. Kf2 Ra1 89. Ne4 Kd5 90. Ke2
Ra2+ 91. Kd3 Ra1 92. Bc5 Rd1+ 93. Kc2 Rh1 94. Bf2 Rh3 95. Bg3 Rh1 96. a4 Kc4
97. Kd2 Ra1 98. Nd6+ Kd5 99. Nxf7 Ke6 100. Ne5 Ra2+ 101. Ke1 Ra1+ 102. Kf2 Kf5
103. Nc6 Ra2+ 104. Kg1 Ra1+ 105. Kg2 Ra2+ 106. Kh3 Rxa4 107. Ne7+ Ke6 108. Nxg6
Ra3 109. Nf4+ Kf5 110. Nxh5 Rxf3 111. Ng7+ Kg6 112. Kg4 Re3 113. Nf5 Re4+ 114.
Bf4 Ra4 115. h5+ Kh7 116. g6+ Kg8 117. h6 Kh8 118. Kg5 {
Stahlberg would win in the last four rounds.} 1-0

[Event "Buenos Aires"]
[Site "Circulo de Ajedrez"]
[Date "1945.??.??"]
[Round "13"]
[White "Pelikan, Jorge"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E67"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1945.05.??"]
[SourceDate "1999.07.01"]

{When the last round began, Najdorf led half-a-point on Guimard.} 1. d4 Nf6 2.
Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. h3 c6 9. Be3 e4
10. Nd2 d5 11. Qb3 Nb6 12. cxd5 Nfxd5 $1 {Black sacrifices a pawn.} (12... cxd5
13. a4 a5 14. Rac1 {
slightly favours White (Esposito - Czerniak, Quilmes  1945).}) 13. Nxd5 Nxd5
14. Nxe4 Nxe3 15. fxe3 {The chances are about equal.} Qe7 16. a3 $6 Bf5 $6 (
16... Bxh3 $1 17. Bxh3 Qxe4 {regains the pawn and achieves an edge.}) 17. Nf2
Rad8 18. Rad1 Be6 19. Qc3 f5 20. b4 Bh6 {The attack in the centre begins.} 21.
Rd3 b5 $3 {He creates the outpost c4.} 22. Qxc6 $2 {
Pelikan falls into the trap.} (22. Qc5 $1 {(Najdorf)} Rf7 23. Qxe7 Rxe7 24.
Bxc6 Bc4 25. e4 {defends well.}) 22... Bc4 $1 23. Qc5 $5 Qg5 $5 24. Kh2 $2 {
He should have protected e3.} (24. Qe5 $1 Rfe8 $5 25. h4 $1 Qh5 26. Qxe8+ $1
Rxe8 27. Bf3 {makes a great escape.}) 24... Bxd3 25. Nxd3 Qxe3 26. d5 $2 (26.
Qxb5 Rxd4 27. Bf3 {offers more resistance (Najdorf).}) 26... Qxe2 27. Qxb5 f4
$1 28. gxf4 Bxf4+ 29. Kh1 Bg3 30. Rg1 Rf3 $1 31. Qa5 Rdf8 32. Nc1 Qd2 33. d6
Bxd6 34. Ne2 Rd3 35. Bf1 Qe3 {Najdorf won the brilliancy prize of 100 pesos
and the tournament. The final standings became: Najdorf 10/12 (800 pesos),
Guimard and Stahlberg 9 (575 pesos), Michel and Czerniak 81/2 (300 pesos),
Moderna and Pelikan 7 (125 pesos), Benko 5 (75 pesos), Rauch 41/2, Hand 4,
Lynch 31/2, de Ronde and Falcon 1.} 0-1

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "2"]
[White "Bauza, Lorenzo"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B55"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

{The ninth Mar del Plata tournament was played from 12 until 31 iii 1946. Main
sponsors were the lotteries and casinos. Nineteen men participated. Najdorf
dominated the event.} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6.
Nxc6 bxc6 7. c4 g6 8. O-O Bg7 9. Nc3 O-O 10. Qc2 Qa5 $5 11. Rb1 Ng4 $1 {
Black takes the initiative.} 12. h3 Ne5 13. Be2 Rb8 14. Bd2 f5 15. b4 $1 Qc7 ({
Not} 15... Rxb4 $2 16. Nd5 $1) 16. f4 Nf7 17. Be3 e5 18. Bd3 $2 ({Better is} 
18. fxe5 Nxe5 19. c5 $1 {and White has a plus.}) 18... exf4 19. Bxf4 g5 $1 {
The attack on the kingside starts.} 20. Bh2 $5 f4 $1 21. e5 $5 {
He makes a desperate attempt.} Nxe5 22. Bxh7+ Kh8 23. Be4 Be6 $6 24. h4 $6 d5
$5 25. Bd3 $5 Nxd3 26. Qxd3 Bf5 $1 27. Qf3 g4 $1 28. Bxf4 gxf3 29. Bxc7 Bxc3
30. Bxb8 Bd4+ 31. Kh2 Bxb1 32. Rxb1 f2 {Najdorf wins material.} 0-1

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "5"]
[White "Maderna, Carlos"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "D15"]
[Annotator "JvR"]
[PlyCount "178"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e4 b5 6. e5 Nd5 7. a4 Nxc3 $5 ({
Known is} 7... e6) 8. bxc3 e6 9. Be2 {White has positional compensation for
the pawn, because he can manoeuvre against weaknesses..} ({
The main line will become} 9. Ng5 $5 Be7 10. Qh5 Bxg5 11. Bxg5) 9... Be7 10.
Nd2 a6 11. Bf3 Ra7 $5 12. O-O Rc7 13. Ne4 O-O 14. Qe2 $5 Nd7 15. Ba3 Bxa3 16.
Rxa3 c5 17. axb5 axb5 18. Nd6 $5 b4 $1 {Black returns the pawn.} 19. cxb4 cxb4
$5 20. Ra4 b3 21. Nxc4 Bb7 22. Rb1 Bxf3 $6 (22... Rxc4 $1 23. Qxc4 Bxf3 24.
gxf3 Qg5+ 25. Kh1 Nb6 26. Qxb3 Nxa4 27. Qxa4 Qf4 {leads to equality.}) 23. Qxf3
Qh4 24. Qd3 Rfc8 $6 {Najdorf defends passively.} (24... f6 $1 25. g3 Qh6 {
counters on the f-file.}) 25. g3 Qg4 26. Rxb3 {White has gained a pawn.} g6 $2
{Square f6 becomes a weakness.} 27. Kg2 $1 Rd8 28. h3 Qh5 29. Nd6 Qg5 30. Qf3
Qe7 31. Rb7 Nf8 32. Raa7 Rdd7 33. Rxc7 Rxc7 34. Rxc7 $6 (34. Ra8 $1 f5 35. Qb3
{wins quickly.}) 34... Qxc7 35. Qf6 Qd7 36. h4 h5 37. Qf3 Qa7 38. Kh2 Qd7 39.
Qa8 Qc7 40. Qf3 Qe7 41. Qc6 Qa7 42. Kg2 Qe7 43. Ne4 Nh7 44. Qc8+ Nf8 45. Nf6+
Kg7 46. Qa8 Qb4 47. Qa7 Qb5 48. Qc7 Qa4 49. Qc3 Nh7 50. Ne4 Qa7 51. Nd6 Qa8+
52. Qf3 Qa7 53. Qf4 Qd7 54. Qc1 Nf8 55. Qg5 Nh7 56. Qf4 Nf8 57. f3 $1 {
White has material and positional advantages. He moves forwards at last.} Nh7
58. g4 hxg4 59. fxg4 g5 $5 60. hxg5 Qc6+ 61. Kg1 $1 Qd7 62. Kh2 Nf8 63. Qf6+
Kg8 64. Qf3 Qa7 65. Qb7 $6 {Maderna should postpone the exchange of queens.} ({
Better is} 65. Kg3 $1 Ng6 $1 66. Qb7 $1 Qxb7 {
(if Black checks, the white king will move through f2 and e3 to e4)} 67. Nxb7 {
and White keeps pawn g5.}) 65... Qxb7 66. Nxb7 Nh7 $1 67. g6 fxg6 68. Kg3 Ng5
69. Kf4 Nh3+ 70. Ke3 Kf7 71. Nd6+ Ke7 72. Ne4 g5 $1 {
He has to control square f4.} 73. Kd3 Kd7 74. Kc4 Kc7 $6 (74... Ke7 75. Nf6 Nf2
76. d5 exd5+ 77. Kxd5 {will be harder to win for White.}) 75. d5 $1 exd5+ 76.
Kxd5 Nf4+ $1 77. Kc4 Ne6 78. Nf6 Kd8 ({Or} 78... Kc6 79. Kd3 $1 Kc7 80. Ke4)
79. Kd5 Ke7 80. Ke4 Kf7 81. Nd5 $1 Kg6 82. Ne7+ Kf7 83. Nc6 Nf4 (83... Kg6 84.
Kd5 $1 {enters the black position from the other side.}) 84. Kf5 $1 Ne6 85. Nb4
Ke7 86. Nd3 Kf7 87. Ne1 Nd4+ 88. Kxg5 Ke6 89. Nd3 Nc6 {
Najdorf lost one game and drew two. He won the rest.} (89... Nc6 90. Kf4 $1 {
prepares a prudent advance of the pawns.}) 1-0

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "7"]
[White "Stahlberg, Gideon"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D34"]
[Annotator "JvR"]
[PlyCount "187"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

{Again Stahlberg was the main competitor of Najdorf.} 1. d4 d5 2. c4 e6 3. Nf3
c5 4. cxd5 exd5 5. g3 Nc6 6. Bg2 Nf6 7. O-O Be7 8. Nc3 Ne4 9. dxc5 Nxc3 10.
bxc3 Bxc5 11. Ne1 Be6 12. Nd3 Bd6 $5 (12... Qa5 {
occurred in Rubinstein - Leonhardt, San Sebastian 1912.}) 13. Rb1 Qd7 14. Qa4
Rb8 15. Bf4 O-O 16. Bxd6 Qxd6 {The chances are about equal.} 17. Rfd1 Rfd8 18.
Rd2 Rd7 19. Rbd1 Rbd8 20. Nf4 {Many pieces are aimed at d5.} Qe5 21. Qa3 b6 22.
Nd3 Qc7 23. Nb4 Nxb4 24. cxb4 d4 25. b5 Qc3 26. Qa4 Qc4 27. Qxc4 Bxc4 28. Bc6
Rd6 {Black can survive in the endgame.} 29. e3 d3 $1 30. Rc1 $1 Be6 31. f3 Kf8
32. Kf2 Bd7 33. Bxd7 R8xd7 34. e4 Rd4 $6 (34... f5 $1 35. Ke3 fxe4 36. fxe4 Rd4
37. Rc3 Rb4 {draws.}) 35. Ke3 Rb4 $5 36. Rxd3 {White has gained a pawn.} Ke7 $5
37. Rb3 $1 Ra4 38. a3 a6 39. bxa6 Rxa6 40. Rcc3 Rda7 41. h4 h5 $1 42. Kf4 Ra5
43. Rd3 $5 (43. Rxb6 Rxa3 44. Rxa3 Rxa3 {brings a theoretical draw.}) 43... g6
44. Rdc3 Kf8 45. Ke3 Ra4 46. Kd3 b5 $5 47. Kc2 Rb7 48. Rb4 Ra5 49. Rcb3 Ke7 50.
Kb2 Ke8 51. Rd4 Raa7 52. Rc3 Ra5 53. Rc5 Ra6 54. Rb4 Ra5 55. f4 Ke7 56. Rb3 Kf6
57. Rc6+ Kg7 58. e5 Ra4 59. Rb4 Rba7 60. Rxa4 $1 Rxa4 61. Rb6 Ra5 62. Rb8 {
Michel has become very passive in the rook ending.} Kh7 63. Kb3 Kg7 64. Rb6 Kf8
65. Rb7 Kg8 66. Rb8+ Kg7 67. Ka2 Kh7 68. Kb2 Kg7 69. Kb3 Kh7 70. Rb6 Kg7 71. e6
$5 Kf6 $5 72. exf7+ Kxf7 73. Rb7+ Kf6 74. Kb2 Ke6 75. Ka2 Kf6 76. Kb3 Ke6 77.
Rc7 Ra4 78. Rc5 Rd4 $1 {He counters timely.} (78... Ra5 $2 79. Rg5 Kf6 80. Kb2
$1 Kf7 81. f5 $1 gxf5 82. Rxf5+ Kg6 83. Rg5+ Kh6 84. Kb3 {
leads to a decisive zugzwang.}) 79. Rxb5 Rd3+ 80. Kb2 $1 Rxg3 81. a4 Rf3 82.
Rb4 $1 Kd5 $2 ({Correct is} 82... Rf2+ $1 83. Ka3 Rf3+ 84. Rb3 Rxf4 85. a5 Kd7
86. Rb4 Rf1 {and Black escapes.}) 83. a5 $1 Rf2+ 84. Ka3 $5 Rf3+ ({Or} 84...
Rf1 85. Kb2 Rf2+ 86. Kb3 $1) 85. Ka4 Kc6 86. a6 $1 Rf1 87. Ka5 $1 Ra1+ 88. Ra4
Rc1 {Exchange leads to a lost pawn ending.} 89. Kb4 $1 Rb1+ 90. Kc3 Rb8 91. Kd4
Kb5 92. Ra1 Rd8+ 93. Ke5 Kb6 94. a7 {
Michel would end as number three in the event.} 1-0

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "9"]
[White "Sanguinetti, Renato"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E68"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4
Re8 9. Be3 h6 $5 10. h3 b6 11. Qd2 Kh7 12. Rad1 Bb7 13. d5 a5 14. Qc2 Nc5 15.
b3 Bc8 $5 16. Nd2 Nh5 17. a3 Kh8 $5 {He could have played .. f5 directly.} 18.
b4 axb4 19. axb4 Na6 20. Qb3 f5 21. Ne2 $5 Bd7 22. Kh2 $6 ({Preferable is} 22.
exf5 gxf5 23. Bf3 Nf6 24. Rfe1) 22... Qf6 $6 (22... f4 $1 23. gxf4 exf4 24. Bd4
Bxd4 25. Nxd4 Qf6 {takes the initiative.}) 23. Bf3 Qf7 24. Rb1 Nf6 25. Qd3 $2 {
White allows a tactical trick.} ({Better is} 25. Bg2 g5 26. exf5 Bxf5 27. Rbe1)
25... g5 $1 26. exf5 e4 $1 {A semi-sacrifice leads to a material gain.} 27.
Nxe4 Bxf5 28. Nxd6 $1 Bxd3 29. Nxf7+ Kg8 30. Nxh6+ Bxh6 {
White has captured three pawns for a knight.} 31. Rbd1 $2 {
He misses a great opportunity.} (31. d6 $1 cxd6 32. Bxa8 Rxa8 33. Rfe1 Bxb1 34.
Rxb1 Nd7 35. h4 $1 {brings counter-play.}) 31... Nxb4 32. d6 c5 $5 33. d7 $5
Nxd7 34. Rxd3 Nxd3 35. Bxa8 Rxa8 36. h4 N7e5 37. Kg2 Nxc4 38. Bxg5 Bxg5 39.
hxg5 Ra2 40. Nc1 Rd2 41. Kf3 Nxc1 {
Najdorf had a lot of success in the King's Indian Defence.} 0-1

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "11"]
[White "Stahlberg, Gideon"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E14"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

{The main competitors met.} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Be7 5. Bd3 d5 6.
b3 O-O 7. O-O Nbd7 8. Bb2 Bb7 9. Nc3 Ne4 10. Qe2 a6 11. Rfd1 $5 Bd6 12. Ne5 Qh4
$1 {Najdorf wants the initiative.} 13. f4 Ndf6 14. cxd5 $5 exd5 15. Bxe4 dxe4
16. Rac1 b5 17. Qf2 Qh6 $5 {He wants to play for a win.} 18. Re1 Rad8 19. Qg3
$5 Nd7 20. Ne2 Nb6 21. Bc3 $6 (21. Ng4 Qg6 22. Ne5 {aims at a draw.}) 21... Nd5
22. Ba5 f6 23. Ng4 $6 (23. Nc4 $1 bxc4 $5 24. bxc4 Ne7 25. c5 {equalises.})
23... Qg6 24. Nc3 Nb4 25. Bxb4 Bxb4 26. f5 Qe8 $6 (26... Qh5 $1 {keeps an edge.
}) 27. Red1 Bd6 28. Qh4 Rf7 29. Nf2 Re7 30. Ne2 Qd7 31. g4 $5 Qe8 32. Nh3 c5 $2
{The road to victory begins by an error.} (32... Rc8 $1 33. Nhf4 c5 34. Ne6 c4
{brings chances for both sides.}) 33. Nhf4 $4 {The tables turn.} (33. g5 $1
cxd4 34. gxf6 gxf6 35. Kh1 $1 {starts a white attack.}) 33... cxd4 34. Ne6 $5 (
{Or} 34. exd4 Bxf4 35. Nxf4 e3 $1 36. g5 Qd7 {and Black wins.}) 34... Rxe6 $1
35. fxe6 d3 36. Nd4 Be5 37. Qf2 Bxd4 38. exd4 Qxe6 {
He has conquered the centre.} 39. Qf5 Qd6 40. d5 Bxd5 41. Rc8 Rxc8 42. Qxc8+
Kf7 43. Rc1 Qe6 44. Qc7+ Kg6 45. Qf4 e3 46. h4 h6 47. h5+ Kh7 48. Qd4 d2 {
Stahlberg became tired of Najdorf.} 0-1

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "12"]
[White "Najdorf, Miguel"]
[Black "Hounie Fleurquin, Carlos"]
[Result "1-0"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 c5 5. O-O c4 6. Be2 b5 7. Ne5 $5 ({
The positional move} 7. b3 {drew in Maroczy - Nimzowitsch, Gothenburg 1920.})
7... Nbd7 8. f4 Bb7 9. Nd2 Bd6 10. c3 O-O 11. Qc2 Qc7 12. Bf3 Nb6 13. e4 $5
Rac8 14. exd5 exd5 $5 15. g3 $5 Nfd7 16. Bg2 f6 17. Ng4 Rce8 18. Nf3 Re7 19.
Nh4 Rfe8 20. Qd1 Re6 21. Bh3 {No big events have taken place, so far.} Re2 $2 {
The rook moves to an odd place.} 22. Nf5 $5 R2e4 23. Bg2 $2 (23. Nf2 $1 Re2 24.
Bg4 R2e6 25. Nh6+ $1 gxh6 26. Bxe6+ Rxe6 27. Qg4+ Kf7 28. f5 $1 {
leads to a decisive attack for White.}) 23... R4e6 24. Ngh6+ $1 Kf8 25. Qg4 Nb8
26. Nxd6 Qxd6 27. Nf5 Qc7 28. Nh4 Qe7 29. b3 Re1 $2 {
Najdorf gets a second chance.} (29... Kg8 {defends correctly.}) 30. Nf5 $1 Bc8
({The pointe is} 30... Rxf1+ 31. Bxf1 $1 Qc7 32. Ba3+ Kg8 33. Nd6 Rf8 34. Qe6+
Kh8 35. Nxb7 {and White wins material.}) 31. Ba3 $1 Rxa1 32. Qxg7# 1-0

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "13"]
[White "Najdorf, Miguel"]
[Black "De Souza Mendes, Joao"]
[Result "1-0"]
[ECO "D66"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Nbd7 8. Rc1
c6 9. Bd3 dxc4 10. Bxc4 b5 11. Bd3 a6 12. O-O c5 13. a4 bxa4 14. Nxa4 cxd4 15.
Nxd4 Ne5 $6 {The queen's knight becomes vulnerable.} ({Known is} 15... Bb7 $1)
16. Bb1 Bb7 17. Nc5 Bd5 $6 (17... Bxc5 18. Rxc5 Ned7 19. Rc1 Qb6 {
almost equalises.}) 18. Qc2 {White threatens Bxf6 and Qh7+.} Re8 $2 (18... Neg4
$1 19. h3 Bxc5 20. Qxc5 Ne5 21. Bg3 Ng6 {defends well.}) 19. Bxf6 Bxf6 20. Rfd1
$6 Nd7 $2 (20... g6 $1 21. e4 Bg5 22. exd5 exd5 {offers more resistance.}) 21.
Qh7+ Kf8 22. Nf5 $1 g6 ({Or} 22... exf5 23. Rxd5 Nxc5 24. Rcxc5) 23. Nxh6 Bg7
24. Qg8+ {Najdorf met little opposition.} ({The game can be ended by} 24. Qg8+
Ke7 25. Qxf7+ Kd6 26. Ne4+ Ke5 27. f4#) 1-0

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "15"]
[White "Letelier Martner, Rene"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B85"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e6 7. Be3 a6 8. O-O
Be7 9. f4 Qc7 10. Qe1 O-O 11. Rd1 Bd7 12. g4 $6 {
White makes a premature advance.} ({Theory is} 12. Qg3) 12... Nxd4 13. Bxd4 Bc6
14. Bf3 e5 $1 15. Be3 exf4 16. Bxf4 {His pawn structure has been weakened.}
Qb6+ 17. Qe3 Qxb2 $1 {An exchange of queens brings no advantage.} 18. Bxd6 Bxd6
19. Rxd6 Rae8 $1 20. Qd4 $5 Rc8 $5 {He could have captured the c-pawn.} 21. Ne2
$2 {White worsens his case by each action.} ({Better is} 21. Rb1 $1 Qa3 22. Qb4
) 21... Qa3 $5 22. Rxf6 $6 {Desperation.} Rcd8 $5 23. Qf2 gxf6 24. Ng3 Qc3 25.
Nf5 Bd7 $6 (25... Rfe8 $1 {ends the game.}) 26. Ne7+ $1 Kh8 27. Nd5 Qe5 28. Bg2
$5 Be6 29. Qxf6+ Qxf6 30. Rxf6 Bxg4 31. Rb6 Rd7 32. e5 Rc8 33. Nf6 Rd1+ 34. Kf2
Rxc2+ 35. Kg3 Rg1 36. Kxg4 Rgxg2+ 37. Kf5 Rgf2+ 38. Ke4 Rb2 39. Rd6 Rfd2 40.
Nd5 Rxa2 41. Rd8+ Kg7 {Najdorf carried out a strong counteraction.} 0-1

[Event "Mar del Plata"]
[Site "9"]
[Date "1946.??.??"]
[Round "18"]
[White "Najdorf, Miguel"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "D30"]
[Annotator "JvR"]
[PlyCount "149"]
[EventDate "1946.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. g3 Nc6 6. Bg2 Nf6 7. O-O Ne4 8. Nc3
cxd4 $2 ({Usual is} 8... Be7) 9. Nxd4 Nxc3 10. bxc3 Be7 11. Qb3 $1 {
White pressures on d5.} Nxd4 $6 ({Preferable is} 11... O-O $1 12. Rd1 $1 Nxd4
13. cxd4 Be6 14. Qxb7 Bd6) 12. cxd4 Be6 13. Qxb7 {
White grabs a pawn. Black gets little compensation.} O-O 14. Bf4 Bd6 15. Bxd6
Qxd6 16. Qb2 $5 Rab8 17. Qd2 Qa3 18. Rab1 h6 19. h4 Rfc8 20. Bf3 Qa4 21. Rxb8
Rxb8 22. Rc1 Qa3 23. Rc2 Rb5 24. Kg2 {He improves his position slowly.} Rb4 25.
Rc5 $1 Rb2 26. Qa5 Qxa2 27. Qxa2 Rxa2 28. e3 $1 Kf8 29. Bxd5 Bxd5+ 30. Rxd5 {
White has reached a won rook ending.} Ke7 31. Kf3 a5 32. e4 a4 33. Ke3 $5 a3 $5
34. Ra5 Ra1 35. Kf4 Ra2 $5 36. f3 Rd2 $5 37. d5 $5 a2 38. Ke5 Rb2 39. h5 Kd7
40. g4 Kd8 41. f4 Kd7 42. Kf5 Rd2 43. Ke5 $6 Rb2 $6 (43... f6+ $1 44. Kf5 Rf2 {
offers more resistance.}) 44. g5 $1 hxg5 45. fxg5 Re2 46. Ra7+ Kc8 47. g6 fxg6
48. hxg6 Kb8 49. Ra3 Kc7 50. Kf5 Kd6 51. Ra6+ Kc5 52. d6 a1=Q 53. Rxa1 Kxd6 54.
Ra6+ $1 Ke7 55. Ra7+ Kd6 56. Rxg7 Rf2+ 57. Kg4 Rg2+ 58. Kf4 Rf2+ 59. Ke3 Rg2
60. Ra7 $2 {He makes a big mistake.} ({Right is} 60. Kf3 $1) 60... Ke5 $1 61.
Ra5+ Kf6 62. Ra6+ Ke5 $2 (62... Kg7 $1 63. e5 Rxg6 {draws.}) 63. Kf3 $1 {
Miguel utilises the second chance.} Rg1 64. Rb6 $1 Rh1 65. Kg4 Kxe4 66. Re6+
Kd5 67. Re8 Kd6 68. Kg5 Rg1+ 69. Kf6 Rf1+ 70. Kg7 Rg1 71. Kf7 Kd7 72. Re4 Rf1+
73. Kg8 Rg1 74. g7 Rg2 75. Rh4 {Najdorf drew with Pilnik in the last round.  
The final standings were: Najdorf 16/18 (1300 pesos), Stahlberg 13 (1000 pesos)
, Michel 11 (800 pesos), Guimard 101/2 (700 pesos), Jacobo Bolbochan, Corte,
Hounie Fleur and Luckis 10 (490 pesos), Pilnik 91/2 (380 pesos), Reinhardt 9
(360 pesos), Letelier Martner 81/2 (340 pesos), Iliesco, Maderna, Sanguinetti
and Souza Vera 8 (320 pesos), Rocas 61/2 (260 pesos), Garcia Versa 51/2 (220
pesos), Maccioni 5 (200 pesos), Bauza 41/2 (180 pesos).   Many chess players
could not leave Argentina after World War II broke out. The new tournaments
helped them in their survival, but they had to do other work as well.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "1"]
[White "Euwe, Max"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "E37"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

{The tenth tournament in Mar del Plata happened from 12 iii until 1 iv 1947. A
guest from overseas could participate, because World War II had ended. Euwe
made a tour in South America and took part in two Argentinian events.} 1. d4
Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 c5 8. dxc5 Nc6
9. cxd5 exd5 10. Nf3 Bf5 11. b4 O-O 12. Bb2 Ng3 {
This line leads to a substantial advantage for White.} 13. Qc3 d4 14. Nxd4 Nxd4
15. fxg3 {Najdorf did not know the refutation.} Nc2+ 16. Kf2 Qg5 17. h4 $5 (17.
Rc1 Rfe8 18. Rxc2 Bxc2 19. Qxc2 {occurred in Foltys - Opocensky, Prague 1941.})
17... Qh6 18. g4 $5 (18. Rc1 {would be fine too.}) 18... Be4 ({The pointe is} 
18... Qf4+ 19. Kg1 Qxg4 20. Rc1 Qg6 21. h5 {(Euwe).}) 19. g5 Qg6 20. Rd1 $1 f6
$5 21. Qb3+ $1 ({Not} 21. gxf6 $4 Rxf6+ 22. Kg1 Rxf1+ $1 23. Kxf1 Qxg2# {
(Euwe).}) 21... Kh8 22. gxf6 Rxf6+ $5 {Najdorf tries his last chance.} 23. Bxf6
Qxf6+ 24. Kg1 Rf8 25. Rh3 h6 26. Rf3 $5 Bxf3 27. exf3 {Max has two extra pawns.
} Nd4 28. Qd5 Nf5 29. Qxb7 Ne3 30. Re1 Qc3 31. Re2 Qd4 32. g3 $1 Re8 33. Qa6 $1
Rd8 34. Qe6 Nxf1+ 35. Kxf1 Qa1+ 36. Kg2 Qxa3 37. Qf7 Qxb4 38. Re8+ {
The former world champion had a great start.} (38. Re8+ Rxe8 39. Qxe8+ Kh7 40.
Qe4+ {wins easily (Euwe).}) 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "2"]
[White "Najdorf, Miguel"]
[Black "Cruz, Walter"]
[Result "1-0"]
[ECO "E01"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Bd6 5. c4 c6 6. d4 O-O 7. Qc2 Nbd7 8. Nbd2
Re8 9. Rd1 Qe7 $5 10. Nh4 Nf8 11. Ndf3 b6 12. b3 Bb7 13. Bb2 Ba3 $5 14. Bxa3
Qxa3 15. Ne5 Rac8 16. Nhf3 Qe7 $2 {Black is going to lose a pawn.} ({Correct is
} 16... N6d7 $1 17. Ng5 Nxe5 18. dxe5 Qe7 {(Ellerman).}) 17. Ng5 $1 c5 18.
Ngxf7 $1 cxd4 19. Rxd4 h6 (19... Qc7) 20. Qd2 $1 N8d7 21. Qe3 Nb8 22. g4 Rf8
23. g5 $1 Nfd7 24. gxh6 {
Najdorf compensated his loss in the first round quickly.} ({The pointe is} 24.
gxh6 Rxf7 25. h7+ Kxh7 26. Qh3+ Kg8 27. Ng6 {(Ellerman).}) 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "3"]
[White "Michel, Paul"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "C86"]
[Annotator "JvR"]
[PlyCount "110"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

{When Eliskases stayed in Sao Paolo, he became a bridge teacher. Later friends
hired him as a chess teacher and he was allowed to stay in Brazil. His work
for a 'Renner' department store began in 1947. He could travel from Porto
Alegro to a foreign tournament.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5.
O-O Be7 6. Qe2 b5 7. Bb3 O-O 8. c3 d5 9. d4 $5 (9. exd5 Nxd5 10. Nxe5 Nf4 11.
Qe4 Nxe5 12. Qxa8 $2 Qd3 13. Bd1 Bh3 $1 {(Roesch - Schlage, Hamburg 1910).})
9... Nxe4 10. dxe5 Na5 11. Bc2 f5 12. exf6 Bxf6 $1 (12... Nxf6 $6 13. Bg5 {
slightly favours White.}) 13. Bxe4 dxe4 14. Qxe4 Bb7 15. Qg4 Qd3 $1 {
Black controls the centre.} 16. Nbd2 Rae8 17. Qg3 Rf7 18. Nd4 $2 {
Michel counters in the wrong way.} ({The ingenious} 18. a4 $1 Rd7 19. axb5 Nb3
$1 20. Ne5 $1 Qxg3 21. hxg3 Rxd2 22. Bxd2 axb5 23. Ng4 Nxd2 24. Nxf6+ gxf6 25.
Rfe1 {almost equalises.}) 18... Qxg3 19. hxg3 b4 $1 20. N2b3 ({The pointe is} 
20. cxb4 Bxd4 21. bxa5 Re2 $1 {(Ellerman).}) 20... Nxb3 21. axb3 bxc3 22. bxc3
c5 23. Nc2 Bxc3 {
Black has regained the pawn and achieved a positional advantage.} 24. Ra4 Re2
25. Ne3 Bd4 26. Rc4 Bc6 27. Rc2 Rxc2 28. Nxc2 Bb5 29. Nxd4 $5 {
White gives an exchange.} (29. Rd1 Bxf2+ 30. Kh2 Rd7 {
and Black decides the ending.}) 29... Bxf1 30. Ne6 Bb5 31. Nxc5 Rc7 32. Be3 Kf7
33. f3 h6 34. Kf2 Ke7 35. Ke1 Rc8 36. g4 Kd6 37. Ne4+ Kd5 38. Kd2 {
White forestalls ..Rc2.} Bf1 $1 39. Ng3 Bxg2 40. Nf5 Rb8 $1 41. Nxg7 Rxb3 42.
Nh5 Bxf3 43. Bxh6 a5 $1 44. Nf4+ Kc4 45. g5 Be4 46. Bg7 Rg3 47. Bf6 a4 48. Ne2
Rd3+ 49. Ke1 a3 50. Nc1 Rh3 51. Kd2 Bh7 52. Ke2 Rh1 53. Kd2 Rh2+ 54. Kd1 Bg6
55. Be5 Bh5+ {Eliskases had defeated an old team mate.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "4"]
[White "Iliesco, Juan"]
[Black "Euwe, Max"]
[Result "0-1"]
[ECO "D02"]
[Annotator "JvR"]
[PlyCount "104"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. O-O c6 5. d4 Nbd7 6. Nh4 $5 Bg4 7. h3 Bh5 8.
c4 $5 e6 $5 {The offered pawn could be taken.} 9. cxd5 cxd5 10. Nc3 Bd6 11. Qb3
Qb6 12. Qxb6 Nxb6 13. e4 $6 ({Preferable is} 13. g4 $1 Bg6 14. g5) 13... Nxe4
14. Nxe4 dxe4 15. Bxe4 O-O-O 16. Be3 Be2 17. Rfc1+ Kb8 18. b3 f6 19. Rc2 Ba6
20. Ng2 g5 $1 {Euwe applies restriction.} 21. Ne1 $5 Nd5 22. Bxd5 $2 exd5 {
Black has achieved the two bishops.} 23. Rd1 Rhe8 24. Ng2 Rc8 25. Rdc1 Bd3 $5
26. Rxc8+ Rxc8 27. Ne1 Be4 28. Rd1 a5 29. f3 Bg6 30. Kf2 a4 $1 31. bxa4 Rc4 32.
Nd3 $6 ({Preferable is} 32. a5 $5 Ra4 33. Rd2) 32... Rc2+ $1 33. Kf1 {
If White does not retreat, he will lose a piece.} Bxg3 34. Nb4 Rh2 $2 {
Blunders are made before the time control.} (34... Rb2 $1 35. Nxd5 Bf5 36. Rd2
$6 Rb1+ $1 37. Kg2 Be1 38. Re2 Bd3 {gains material.}) 35. Nxd5 Bf5 36. Nxf6 $2
(36. Rd2 $1 Bxh3+ 37. Kg1 Rxd2 38. Bxd2 {draws.}) 36... Bxh3+ 37. Kg1 Rxa2 $2 (
37... Rg2+ $1 38. Kh1 Re2 {wins for Black.}) 38. Ng4 $2 ({Correct is} 38. Bxg5
$1 Rg2+ 39. Kh1 {and Black cannot play ..h5.}) 38... Rg2+ $1 39. Kh1 h5 $1 40.
Ne5 Re2 $1 41. Bxg5 Rh2+ $1 42. Kg1 Rg2+ 43. Kh1 Bxe5 44. dxe5 Rxg5 45. f4 Rg8
46. Rd6 Rf8 47. Kh2 Bc8 48. Kg3 h4+ 49. Kf3 Rh8 50. Kg2 h3+ 51. Kh2 Rg8 52. Rd2
Rg4 {Euwe had scored 31/2/4.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "5"]
[White "Maderna, Carlos"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "D30"]
[Annotator "JvR"]
[PlyCount "148"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Nbd7 5. e3 c6 6. Nbd2 Be7 7. Bd3 b6 $5 8.
O-O Bb7 9. cxd5 cxd5 10. Rc1 O-O 11. Qe2 a6 12. Rc2 Rc8 13. Rfc1 Rxc2 14. Rxc2
Qa8 $5 15. Ne5 Bd6 16. f4 Rc8 17. Ndf3 h6 18. Bh4 Rxc2 19. Qxc2 Qc8 20. Nxd7
Nxd7 21. Qxc8+ Bxc8 {The endgame is equal, but the players continue.} 22. Kf1
f6 23. h3 Kf7 24. Ke2 Nb8 $1 25. Be1 Nc6 26. Bc3 Nb4 27. Bb1 a5 28. Ne1 Ba6+
29. Kf3 Bc4 30. a3 Nc6 31. Bc2 e5 $1 {He takes the initiative.} 32. fxe5 fxe5
33. dxe5 Bxe5 34. Bxe5 Nxe5+ 35. Kf4 $6 ({Preferable is} 35. Kg3 $1 Kf6 36. b3
Ba6 37. h4) 35... Kf6 36. Nf3 Bf1 $1 37. Nxe5 g5+ 38. Kf3 Kxe5 {
Black controls more territory in the bishop ending.} 39. Kf2 Bb5 40. g3 d4 41.
exd4+ Kxd4 {The black king dominates the centre.} 42. h4 $5 gxh4 43. gxh4 Bd3
$1 44. Bd1 Ke4 {Pawn h4 has become a weakness.} 45. Bf3+ Kf4 46. Bh5 Bf5 47.
Be2 Bg4 48. Bb5 Bh5 49. Bd7 Bg6 {
Eliskases has achieved an edge in his favourite endgame, the bishop ending.}
50. Bh3 $2 {Maderna loses tempi.} ({Correct is} 50. b4 $1 axb4 51. axb4 {
(Stalicka)} Bh5 52. b5 Bg4 53. Bc6 Bf5 54. Ke2 Kg4 55. Ke3 Kxh4 56. Kf4 Bc2 57.
Ke5 {and the white king arrives on the queenside timely.}) 50... Bf5 $1 51. Bf1
Kg4 52. Ke3 Kxh4 53. Kf4 Bc2 54. b4 axb4 55. axb4 Bd1 56. Ke5 (56. Bg2 Be2 $1 {
leads to zugzwang.}) 56... Kg3 57. Kd6 h5 58. Kc7 h4 59. Kxb6 Bg4 $1 60. Kc7
Kf2 61. Bc4 h3 62. Bd5 Bf3 63. Bxf3 Kxf3 64. b5 h2 65. b6 h1=Q 66. b7 Qh7+ 67.
Kc8 Qg8+ 68. Kc7 Qf7+ 69. Kc8 Qf8+ 70. Kc7 Qc5+ 71. Kd7 Qb6 72. Kc8 Qc6+ 73.
Kb8 Ke4 74. Ka7 Qc7 {Eliskases showed accurate positional play.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "6"]
[White "Najdorf, Miguel"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "D26"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O b5 7. Bb3 Nbd7 8. Qe2
c5 9. Rd1 Be7 $5 ({Theory is} 9... Bb7) 10. e4 c4 11. Bc2 Bb7 12. Nc3 Qc7 13.
Bg5 b4 $1 14. Na4 O-O 15. Rac1 Rfe8 $6 (15... h6 $1 16. Bh4 Bd8 {defends well.}
) 16. Nd2 $5 (16. e5 $1 Nd5 17. Bxe7 Rxe7 18. Bb3 $1 {gains a pawn.}) 16...
Rac8 $2 ({Preferable is} 16... c3) 17. e5 $1 Nd5 18. Bxe7 Rxe7 19. Nxc4 $1 {
White has won a pawn.} Nf4 ({The pointe is} 19... Qxc4 20. Bxh7+ $1) 20. Qg4
Qc6 21. d5 $5 exd5 22. Na5 $2 {
The rest of the game will be chaos during time pressure.} (22. Ne3 $1 Ng6 23.
Bxg6 Qxc1 24. Nf5 $1 {wins quickly.}) 22... Qh6 $1 23. Nxb7 Rc4 $6 24. Bxh7+ $6
Kxh7 25. Rxc4 dxc4 26. Rxd7 $2 Rxe5 $2 (26... Rxd7 $1 27. Qxd7 Qg6 {
brings a mate attack (Stalicka).}) 27. h4 $6 (27. h3 $1 Nxh3+ $1 28. Qxh3 Rh5
29. Qxh5 Qxh5 30. g3 {offers more resistance.}) 27... Ne2+ 28. Kh2 Qc1 29. Qf3
Qg1+ 30. Kh3 Qh1+ 31. Kg4 Qc1 $4 {The tables turn.} ({Rossetto misses} 31...
f5+ $1 32. Kh5 Qc1 33. Rd6 Nf4+ 34. Kg5 Ne6+ 35. Kh5 Qh6# {(Euwe).}) 32. Nd6 $1
Qc2 33. Qxf7 Re4+ 34. Nxe4 Qxe4+ 35. f4 Qxg2+ 36. Kf5 Ng3+ 37. Ke5 Qe4+ 38. Kd6
Nf5+ 39. Kc5 Qxf4 {Najdorf stayed in the competition for the first place.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "7"]
[White "Euwe, Max"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "E11"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

{Euwe began the tournament by a score of 5/6.} 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4.
Bd2 Qe7 5. Bg2 O-O 6. Nf3 Bxd2+ 7. Qxd2 d5 8. O-O Nc6 $1 ({Known is} 8... Nbd7)
9. Ne5 Nxe5 10. dxe5 Nd7 11. Qc3 c6 12. Nd2 b6 13. cxd5 cxd5 14. e4 $1 Ba6 15.
exd5 $2 {Max makes an optimistic sacrifice.} ({Better is} 15. Rfc1 Rac8 16. Qd4
{(Euwe).}) 15... Rac8 $1 16. d6 $1 Qg5 17. Qa3 Bxf1 18. f4 Qh6 $1 19. Nxf1 g5
$1 20. Qxa7 $5 {White seems to have a sufficient compensation for the exchange.
} Rfd8 $1 21. Qa4 gxf4 22. gxf4 b5 $1 {Black plays ingeniously.} 23. Qxb5 $2 (
23. Qb4 $1 Qh4 $1 24. Re1 Rc4 25. Qd2 Qxf4 26. Qxf4 Rxf4 27. Bc6 {
keeps counter-play.}) 23... Qxf4 24. Re1 Rc2 25. Re2 Qd4+ 26. Re3 Kh8 $1 {
He prepares ..Rg8.} 27. Kh1 Qxb2 28. Qxb2 Rxb2 29. a4 Rc8 30. a5 Ra2 $1 31. a6
Rc1 32. Rb3 Nxe5 33. Rb7 Nf3 $1 {Black threatens ..Rxf1+ and ..Rxh2#.  Euwe
also lost in the hands of Hounie Fleurquin during the next round and did not
compete for the first place anymore.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "8"]
[White "Najdorf, Miguel"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "D65"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. e3 Be7 6. Nf3 O-O 7. Rc1 a6 8. cxd5
exd5 9. Bd3 c6 10. Qc2 Re8 11. O-O Nf8 12. h3 g6 13. Ne5 $5 (13. Bh6 {
was played in Saemisch - Bogoljubow, Moscow 1925.}) 13... N6d7 14. Bf4 Nxe5 15.
Bxe5 Bd6 16. Bxd6 Qxd6 17. Na4 Ne6 18. Nc5 Nxc5 19. Qxc5 Qf6 $5 20. b4 Bf5 21.
Bxf5 Qxf5 {The position has become equal.} 22. a4 g5 $6 {
Black makes a weakening move.} 23. Qb6 Re7 24. b5 $1 axb5 25. axb5 cxb5 26. Rc5
Kg7 27. Qxb5 {White will manoeuvre against isolated pawns.} Rd8 28. Qa5 Red7
29. Rfc1 g4 $6 30. hxg4 Qxg4 {All black pawns have become isolated.} 31. Rb5
Kh8 32. Qb6 $6 (32. g3 $1 {keeps the advantage.}) 32... Rd6 $1 33. Qc7 (33.
Qxb7 Rg8 34. g3 Qf3 35. Rc6 Rxg3+ {(Euwe)} 36. fxg3 Qxg3+ 37. Kf1 Qf3+ 38. Ke1
Qxe3+ 39. Kd1 Qg1+ 40. Kd2 Qg5+ {leads to perpetual check.}) 33... Rg8 34. g3
Qe6 $6 (34... Rf6 35. Rb6 Rf5 36. Rh6 Qf3 {continues the counteraction.}) 35.
Re1 b6 36. e4 $1 dxe4 $6 (36... f5 $1 37. Reb1 {(Euwe)} f4 $1 38. Rxb6 Qxe4 $1
39. Qxd6 Rxg3+ $1 40. fxg3 Qe3+ {draws.}) 37. Rxe4 $1 Qf6 $6 {
He should have exchanged rooks.} 38. d5 h5 $5 39. Kg2 Qg6 $2 ({Correct is} 
39... h4 $1 40. Qc4 hxg3 41. Rh4+ Kg7 42. fxg3 Kf8 $1 {and Black escapes.}) 40.
Rf4 Rg7 41. Rh4 $5 Rh7 {Pawn h5 gets overprotection.} 42. Rbb4 $1 Qf6 (42...
Rxd5 43. Rxb6 {opens the road to the black king.}) 43. Rhf4 $1 Qd8 44. Qc3+ Kg8
45. Rbc4 $1 {White is going to win material.} Qf8 46. Rc8 Rd8 47. Rfc4 $1 Rh6
48. Rxd8 Qxd8 49. Rc8 {Najdorf had defeated a main competitor.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "9"]
[White "Michel, Paul"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "44"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. f4 Be7 8. Bf3
Qc7 9. O-O Nc6 10. Kh1 Bd7 11. Nb3 Rc8 12. Qe1 $5 b5 13. a3 O-O 14. Be3 b4 $5
15. axb4 Nxb4 16. Qf2 {They are making standard  moves in the Sicilian Defence.
} Bc6 17. Nd4 Bb7 18. g4 $6 {Michel dreams about an attack on the king.} d5 $1
{Stahlberg counters in the centre.} 19. e5 Ne4 $1 20. Bxe4 dxe4 21. h4 $5 Qd8
$1 {Black sets a trap.} 22. g5 $4 ({Correct is} 22. Rfd1 $1 Bxh4 $6 23. Qh2 $1
Rxc3 $1 24. bxc3 Nd5 25. Ne2 {and White has an edge.}) 22... Qxd4 $1 {
Najdorf and Stahlberg competed for the lead.} ({The pointe is} 22... Qxd4 23.
Bxd4 e3+ 24. Qg2 Bxg2+ 25. Kxg2 Nxc2 26. Ra4 Nxd4 27. Rxd4 Rb8 {and Black wins.
}) 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "10"]
[White "Guimard, Carlos"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "D95"]
[Annotator "JvR"]
[PlyCount "146"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 d5 3. e3 g6 4. c4 c6 5. Nc3 Bg7 6. Qb3 O-O 7. cxd5 cxd5 8. Bd2
Nc6 9. Be2 b6 $5 10. O-O Ne4 $5 11. Rfc1 ({The pointe is} 11. Qxd5 $2 Nxc3 12.
Qxd8 Nxe2+ {(Stalicka).}) 11... Nxd2 12. Nxd2 e5 $5 13. Bb5 Na5 14. Qxd5 exd4
15. exd4 Bb7 $1 16. Qxd8 Rfxd8 17. Nf3 Bxf3 18. gxf3 Bxd4 $5 {
Pilnik has a positional advantage.} 19. Ba6 Rab8 20. Rab1 Bxc3 $6 21. Rxc3 b5
$1 22. Rbc1 $6 (22. Rc5 $1 Nc4 23. Rxb5 Rxb5 24. Bxb5 Nd2 25. Rc1 {draws.})
22... Rb6 $1 23. Rc8 Rxc8 24. Bxc8 Nc4 25. b3 Ne5 26. Kg2 Kf8 27. f4 $5 Nd3 28.
Rc7 Nxf4+ 29. Kf3 Rf6 30. Rxa7 Nd5+ $5 31. Kg3 Nc3 32. a4 $2 (32. f3 $1 {
equalises.}) 32... bxa4 $5 33. bxa4 Ne4+ 34. Kg2 Rxf2+ {
Black has gained a pawn in the endgame.} 35. Kg1 Rc2 36. Ra8 $5 Ke7 37. a5 f5
38. Bb7 $5 Nc5 39. Bg2 Ra2 40. Bf1 Nb3 $5 41. a6 Nd4 42. Bg2 Ne6 43. Ra7+ Kf6
44. Rxh7 $2 (44. Bd5 $1 Ra1+ 45. Kf2 {keeps the counter-play on the queenside.}
) 44... Rxa6 45. Rd7 Ra1+ 46. Bf1 Ng5 47. Rd6+ Ke5 $1 48. Rb6 ({Not} 48. Rxg6
$4 Nh3+ 49. Kg2 Nf4+ {(Stalicka).}) 48... Nh3+ 49. Kg2 Nf4+ 50. Kf2 Ra2+ 51.
Kg1 g5 52. Rb5+ Ke4 $5 53. Rb4+ Kf3 54. Rb3+ $6 (54. Rb5 $1 Ke4 55. Rb4+ Ke5
56. Rb5+ Nd5 $1 57. Bg2 Rd2 58. Ra5 {will be hard to win for Black.}) 54... Kg4
$1 55. Rg3+ Kh4 56. Rf3 Rd2 57. Ra3 g4 58. Re3 Rb2 59. Re8 Ng6 60. Re6 Kg5 61.
Re2 Rb1 62. Ra2 Ne5 63. Kf2 f4 64. Be2 Kh4 65. Ra5 Nf7 $2 ({Right is} 65... Ng6
) 66. Ra8 $2 ({Guimard misses the escape} 66. Bxg4 $1 Kxg4 67. h3+ $1 Kxh3 68.
Rf5) 66... Rb2 67. Ke1 f3 68. Bc4 Ne5 69. Rh8+ Kg5 70. Ba6 Kf4 71. Kd1 Rb6 72.
Bc8 Rd6+ 73. Ke1 Ke3 {Pilnik played a fine endgame.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "10"]
[White "Sanguinetti, Renato"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "E48"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nge2 dxc4 7. Bxc4 e5 8. a3
$5 (8. O-O exd4 9. Nxd4 {drew in Engels - Stahlberg, Dresden 1936.}) 8... Ba5 (
{Usual will become} 8... Bd6) 9. b4 exd4 $1 10. Qxd4 Qxd4 $5 11. Nxd4 Bb6 12.
Nf3 $5 a5 13. Bb2 axb4 14. axb4 Rxa1+ 15. Bxa1 Nc6 16. Na2 $2 ({Correct is} 16.
b5 Na5 17. Ba2) 16... Nxb4 $1 {Black gains a pawn.} 17. O-O ({The pointe is} 
17. Nxb4 Ba5 18. Bc3 Ne4 $1 {(Stalicka).}) 17... Nc6 18. Nc3 Na5 19. Ba2 c6 20.
Na4 Bc7 21. Bd4 b5 22. Nc5 $1 {White blockades the queenside.} Nd7 23. Rd1 Nb6
$6 (23... Nxc5 24. Bxc5 Rd8 {makes useful exchanges.}) 24. Be5 $1 Rd8 25. Ra1
Bxe5 26. Nxe5 Nbc4 27. Bxc4 bxc4 $1 28. f4 $2 {
Sanguinetti commits a tactical error.} ({Better is} 28. Kf1 Nb3 29. Nxb3 cxb3
30. Rb1 Be6 31. Nxc6 Rd2 32. Nd4 b2 33. Ke1 Ba2 34. Kxd2 Bxb1 35. Kc3 Be4 36.
Kxb2 Bxg2 {and equality.}) 28... Nb3 29. Nxc6 ({The pointe is} 29. Nxb3 cxb3
30. Rb1 Be6 31. Nxc6 Rd2 $1 32. Nd4 b2 {
and White cannot chase away the intruders.}) 29... Nxa1 $1 30. Nxd8 Nb3 31. Na4
Kf8 32. Nc3 ({Or} 32. Nc6 Bd7 {(Stalicka).}) 32... Na5 $1 33. Kf2 f5 34. Nb5 $1
Ke7 35. Nf7 $1 Kxf7 36. Nd6+ Ke6 37. Nxc8 {White has saved a piece.} c3 38. Ke2
Nc4 $1 39. Kd3 c2 $1 40. Kxc2 Nxe3+ 41. Kd3 Nxg2 42. Nb6 Nxf4+ {
Black has won two pawns.} 43. Kd4 g5 44. Na4 g4 45. Nc5+ Kf6 46. Ke3 {
Eliskases carried out a fine ending.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "10"]
[White "Stahlberg, Gideon"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "E11"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O 5. e3 d5 6. Bd3 dxc4 7. Bxc4 b6 $5
8. O-O Bb7 9. Qe2 Nbd7 10. Rd1 Ne4 $5 11. Bd3 Nxd2 $5 (11... f5 $1 {
fights for control over the centre.}) 12. Bxd2 Bxd2 13. Rxd2 Qf6 14. Rc2 c6 $6
(14... c5 $1 15. Bb5 Rad8 16. Bxd7 Rxd7 17. dxc5 Be4 18. Rc3 bxc5 19. Rxc5 Rfd8
{brings a sufficient compensation for the pawn.}) 15. Rac1 $6 (15. Be4 $1 Rac8
16. Rac1 {leads to the game.}) 15... e5 $6 ({Preferable is} 15... c5 $1 16. Bb5
Rad8 17. Bxd7 Rxd7 18. dxc5 bxc5 19. Rxc5 Bxf3 20. gxf3 e5 $1) 16. Be4 Rac8 17.
dxe5 Nxe5 18. Nxe5 Qxe5 19. Bxc6 Rxc6 20. Rxc6 Bxc6 21. Rxc6 {
White has won a pawn.} Qd5 22. Rc4 $1 g6 ({Or} 22... b5 $1 23. Rc1 a6 24. b3)
23. h4 Re8 24. Qc2 h5 25. a3 Qa5 26. Qc3 Qd5 $5 27. Qd4 Qb7 $5 28. Qf6 Qd7 29.
Qc3 Qd1+ 30. Kh2 Qd6+ 31. g3 Qd5 32. Rd4 Qb7 33. Qd3 Qf3 34. Rf4 Qb7 35. Qc4
Rd8 36. Rf6 Rd1 $2 ({Better is} 36... Qd5 37. Qf4 Rd7) 37. Rxg6+ $1 Kh7 38. Rc6
Rd2 39. Qe4+ $1 {Stahlberg led by half-a-point on Najdorf.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "11"]
[White "Najdorf, Miguel"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "D52"]
[Annotator "JvR"]
[PlyCount "127"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. Nf3 Nbd7 5. Bg5 c6 6. e3 Qa5 7. cxd5 exd5 8.
Bd3 Ne4 9. O-O Nxg5 10. Nxg5 Be7 11. Qh5 $5 {Najdorf likes to play this move.}
({Known is} 11. f4 {(Janowsky - Bogoljubow, New York 1924).}) 11... Bxg5 (11...
g6 $5 12. Qh6 Bf8 13. Qh4 h6 14. Nf3 Qc7 {
will be played in Casas - Letelier Martner, Mar del Plata 1958.}) 12. Qxg5 O-O
13. Rab1 $1 {White takes the initiative on both flanks.} Nf6 14. b4 Qd8 $5 15.
b5 h6 16. Qf4 Bd7 17. bxc6 Bxc6 18. Rfc1 a6 19. Ne2 Ne8 $6 ({More active is} 
19... Qe7 $1) 20. Ng3 Nd6 21. h4 Re8 $5 22. Nh5 Re6 23. Qg3 Ne8 24. Rc5 Rd6 25.
Bc2 Qe7 26. a4 Rad8 27. Rb6 {Najdorf applies encirclement.} Kf8 28. Rb4 Kg8 29.
Bd3 Kf8 30. a5 Ra8 $5 31. Qg4 Bd7 32. Qf4 Bc6 33. Ng3 $1 Rf6 34. Nf5 Qd7 35.
Qe5 Nd6 36. Nxd6 Qxd6 37. Rb6 Qe7 38. h5 Rd6 $5 {
Guimard could have exchanged the queens.} 39. Qf5 $1 Qf6 40. Qh7 Ke7 41. Be2 g5
$5 42. hxg6 $5 Qxg6 43. Bd3 Qxh7 44. Bxh7 {
White keeps pressure, despite the exchanges.} Kd7 45. Bf5+ Ke7 46. f3 Rg8 47.
Kf2 Rg5 $2 {He blunders: the rook should stay on the eighth rank.} 48. Bc8 $1
Rdg6 49. g4 h5 50. Bxb7 $1 Bxb7 51. Rxb7+ {Najdorf has gained a pawn.} Kf8 52.
Rcc7 Rf6 53. Rb6 Re6 54. Rxe6 fxe6 55. gxh5 Rxh5 56. Rc6 Ke7 57. Rxa6 Rh2+ 58.
Kg3 Ra2 59. Kf4 Kf6 60. Ra8 Ra4 61. a6 e5+ 62. Kg3 exd4 63. exd4 Kg7 64. a7 {
Stahlberg kept the lead.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "13"]
[White "Pilnik, Herman"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "138"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e6 7. O-O Be7 8.
Be3 a6 9. f4 Qc7 10. Qe1 Bd7 11. Rd1 Rc8 12. Kh1 O-O 13. Bf3 b5 14. Qg3 $6 ({
Known is} 14. Nb3) 14... b4 $1 15. Nce2 Nxd4 16. Bxd4 $6 (16. Nxd4 e5 17. fxe5
dxe5 18. Bh6 Ne8 19. Nb3 $1 {avoids the loss of a pawn.}) 16... Qxc2 $1 {
Black gains a pawn.} 17. e5 dxe5 18. Bxe5 Bb5 $5 19. Nd4 $1 Qg6 20. Qxg6 hxg6
21. Nxb5 axb5 22. g3 Rfd8 23. Rxd8+ Rxd8 24. Bxf6 Bxf6 {
White has compensation for the pawn in the endgame.} 25. Rd1 Rc8 $1 {Black can 
win another pawn if he exchanges the rooks, but the result will be a draw.} 26.
Be2 $5 ({Prudence shows} 26. Rd2 $1 g5 27. fxg5 Bxg5 28. Re2) 26... g5 $5 27.
fxg5 Bxg5 28. Bxb5 Rc2 29. Rb1 $5 {White has an inactive rook.} Be7 $1 30. Ba4
Rf2 31. Bb3 g5 32. Bc4 $5 Kg7 $5 33. a3 $2 {
He misses the chance to exchange the rooks.} (33. Rg1 $1 Rxb2 34. Rg2 Rb1+ 35.
Rg1 Rxg1+ 36. Kxg1 g4 37. Kg2 Kf6 38. h3 {
draws due to the bishops of a different colour.}) 33... bxa3 34. bxa3 Bxa3 35.
Rb7 Kf6 36. Ra7 Bb2 37. Rd7 Be5 38. Rd1 Ke7 39. Re1 Bd4 40. Rd1 Bc5 41. Rc1 g4
$1 42. Rf1 Rc2 43. Bb3 Rb2 44. Bd1 f5 45. h3 $2 {This pawn sacrifice fails.}
gxh3 46. g4 fxg4 47. Bxg4 Bd6 $1 48. Bf3 {White cannot regain a pawn.} ({
The pointe is} 48. Re1 $2 Rh2+ 49. Kg1 Rg2+ {(Stalicka).}) 48... Bf4 49. Be4 e5
50. Re1 Kf6 51. Bc6 Kg5 52. Be4 Kh4 53. Bc6 Rh2+ 54. Kg1 Kg3 55. Bb5 Rb2 56.
Bd3 Rg2+ 57. Kh1 Rd2 58. Bb5 Rh2+ 59. Kg1 Rb2 60. Bd3 Rb3 61. Be4 Be3+ 62. Kh1
Bd4 63. Rf1 Re3 64. Bc6 Re2 65. Rf3+ Kg4 66. Rf1 e4 $1 {
Black threatens ..Kg3 and mate.} 67. Bxe4 $5 Rxe4 68. Kh2 Re2+ 69. Kh1 Be3 {
Stahlberg led by half-a-point on Najdorf.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "14"]
[White "Euwe, Max"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "D66"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Bd3
dxc4 9. Bxc4 b5 10. Bd3 a6 11. e4 h6 $5 12. e5 $2 {
Euwe overestimates his chances.} (12. Bf4 $6 Bb7 13. e5 Nd5 14. Nxd5 cxd5 15.
O-O {will draw in Gligoric - Stahlberg, Split/Belgrade 1949.}) 12... hxg5 13.
exf6 Nxf6 (13... Bxf6 $5 14. h4 {leads to a white attack (Stalicka).}) 14. Nxg5
b4 15. Na4 Qa5 16. h4 $5 {Max wants to charge.} b3+ $1 17. Nc3 bxa2 18. Kf1 $2
({Correct is} 18. Ra1) 18... Rb8 $1 {Black will gain the b-pawn.} 19. Ra1 Rxb2
20. Nce4 Nxe4 21. Bxe4 Qd2 $1 22. Qxd2 Rxd2 23. Nf3 Rb2 24. Ne5 c5 25. Nc4 Rb4
26. Bd3 Rd8 27. Ne5 Bb7 28. Rxa2 Rbxd4 29. Rb2 Bf6 30. Nxf7 $5 Rxd3 31. Rxb7
R8d7 {Euwe lost in an embarrassing way.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "14"]
[White "Stahlberg, Gideon"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E95"]
[Annotator "JvR"]
[PlyCount "189"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. Re1
exd4 9. Nxd4 Re8 10. Bf1 c6 11. Bg5 h6 12. Bf4 Nc5 $1 {
Najdorf improves the King's Indian Defence.} ({Known is} 12... Qb6 $5 {
(Lundin - Boleslavsky, Groningen 1946).}) 13. Qc2 g5 14. Bg3 Nh5 15. Nf5 $5
Bxf5 16. exf5 Nxg3 17. hxg3 Qf6 18. Rxe8+ $6 (18. Be2 $1 Re5 19. Bg4 $1 {
consolidates the kingside.}) 18... Rxe8 19. Rd1 h5 20. g4 $6 {
White does not have to sacrifice a pawn.} hxg4 21. g3 Qe7 22. Qd2 a5 $1 23. Nb1
$6 (23. Qxd6 $5 Qxd6 24. Rxd6 Bxc3 25. bxc3 Kg7 {
leads to a better endgame for Black (Stalicka).}) 23... a4 $5 24. Na3 $5 Qf6 $1
25. Qxd6 Qxf5 26. Qd2 Bf6 $5 27. Nc2 Rd8 28. Qe2 Rxd1 29. Qxd1 Bxb2 30. Ne3 Qd7
31. Qe2 $5 a3 32. Nxg4 {Black has an extra pawn.} Kf8 33. Ne3 Ne4 34. Nc2 Nc3
35. Qe5 $5 Nxa2 36. Qxg5 Qe7 $6 (36... Nc1 $1 37. Qh6+ Ke8 38. c5 Qe6 {
gains a big advantage.}) 37. Qh6+ Ke8 38. Qf4 $1 Kf8 39. Qh6+ Bg7 40. Qf4 $5
Kg8 41. c5 $1 Nc3 ({The pointe is} 41... Qxc5 $2 42. Bc4 {(Stalicka).}) 42.
Nxa3 Ne4 43. Nc2 Nxc5 44. Ne3 Ne6 45. Nf5 $1 Qg5 46. Qxg5 Nxg5 {White has drawi
ng chances in the ending, due to the bishops of a different colour.} 47. Nd6 $5
Nf3+ 48. Kg2 Ne1+ 49. Kh3 b5 50. Nc8 $5 Bf6 $5 51. Na7 b4 $1 52. Nxc6 $2 (52.
Bc4 $1 c5 53. Nc6 {stops the pawns on the queenside.}) 52... b3 53. Bc4 b2 54.
Ba2 Nf3 55. g4 Ng5+ $1 56. Kg2 Ne4 57. Bb1 Nd2 58. Bf5 b1=Q 59. Bxb1 Nxb1 {
Black has gained a piece, but the win remains difficult.} 60. f4 $1 Bb2 61. g5
Bc1 62. Kf3 Nc3 63. Kg4 Nd5 64. f5 Ne3+ 65. Kf4 Kg7 66. Ke4 {
White cannot exchange the last black pawn.} (66. f6+ $5 Kh7 $1 67. Ne7 {
(Stalicka)} Ng2+ 68. Kg4 Nf4 69. Kf5 Bd2 $1 70. Ke4 Ne6 {wins for Black.})
66... Nc4 67. g6 $1 f6 68. Kd5 Ne3+ 69. Ke6 Nc2 70. Ke7 $2 {
The king should retreat.} Ba3+ 71. Ke6 Bb2 $2 ({Better is} 71... Bf8 $1 72. Kd5
Nb4+) 72. Ke7 $2 Ne3 $2 {Najdorf has missed two opportunities.} (72... Nd4 $1 {
ends the game.}) 73. Ke6 Ng2 74. Kd5 Nf4+ 75. Ke4 Nh5 76. Nd8 Kg8 77. Ne6 Ng7
78. Nc5 Kf8 79. Nd3 Bc3 80. Nf4 Bd2 81. Nd5 Bg5 82. Nc7 Ke7 83. Nb5 Bh6 84. Nd4
Kd6 $1 {The king moves in the right direction.} 85. Nb5+ Kd7 $5 86. Nc3 Ne8 87.
Nd5 Nd6+ 88. Kf3 Bg7 89. Kg4 Ne8 90. Kf4 Kc6 $1 91. Nc3 Kc5 92. Ke4 Nd6+ 93.
Kf4 Bh6+ 94. Kg4 Kd4 95. Na4 {White gave up the lengthy game, because he will
lose his pawns. Najdorf took a lead by half-a-point on Stahlberg.} 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "15"]
[White "Guimard, Carlos"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 b6 5. O-O Be7 6. Nbd2 Bb7 7. b3 O-O 8. Bb2
Nbd7 9. Qe2 a5 $5 ({Usual is} 9... c5) 10. a4 Ne4 11. Rad1 f5 12. Ne5 $6 ({
Stalicka prefers} 12. c4 $1) 12... Nxe5 13. dxe5 Nc5 $1 14. f4 Qe8 15. Bb5 $5
c6 $1 16. Bd3 Nxd3 17. cxd3 c5 18. Rf3 $6 {
White should defend the queenside instead.} c4 $1 19. Rh3 $2 (19. dxc4 $1 dxc4
20. Nxc4 Bxf3 21. Qxf3 {gains compensation for the exchange.}) 19... cxd3 20.
Qf3 $5 (20. Qxd3 Ba6 21. Qb1 Be2 22. Rc1 Bg4 23. Rg3 Bh4 {
costs material (Stalicka).}) 20... Rc8 21. Bd4 Bc5 22. Rh5 g6 23. Rh6 Rf7 24.
Qh3 Bf8 25. Rh4 Qc6 26. g4 Qc2 27. Qf1 Be7 28. Rh3 Bb4 29. gxf5 $5 {
Desperation.} Bxd2 30. fxe6 Re7 31. Rf3 Qxd1 32. Qxd1 Rc1 33. Rf1 Rxd1 34. Rxd1
Bb4 0-1

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "15"]
[White "Najdorf, Miguel"]
[Black "Bolbochan, Jacobo"]
[Result "1-0"]
[ECO "D68"]
[Annotator "JvR"]
[PlyCount "55"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 Nbd7 5. Bg5 Be7 6. e3 O-O 7. Rc1 c6 8. Bd3
dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. Qb1 exd4 14. exd4
Nb6 15. Bb3 Bd7 $6 {The black queen remains vulnerable.} ({Usual is} 15... Qf6)
16. Re1 $1 Qd6 $6 ({Preferable is} 16... Qf6 $1 17. Ne5 Bf5) 17. Ng5 $1 g6 $2 (
17... Qh6 18. f4 Nd5 {defends the kingside properly.}) 18. Rf3 $1 Bf5 (18...
Nd5 $5 19. Ne4 $1 Qc7 20. Qc1 $1 Qd8 21. Bxd5 cxd5 22. Nf6+ Kg7 23. Qg5 h6 24.
Qe5 {brings a decisive white attack.}) 19. Nxf7 $1 {
Najdorf wins by wonderful tactics.} Qxd4 (19... Rxf7 20. Bxf7+ Kxf7 21. g4 {
leads to the loss of material (Stalicka).}) 20. Nh6+ Kh8 21. Nxf5 gxf5 22. Re7
Nd5 23. Bxd5 Qxd5 24. Rd3 Qc5 25. Rdd7 Rfe8 26. Rxh7+ Kg8 27. Rhg7+ Kh8 28. Qd1
$1 {Najdorf kept the lead.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "16"]
[White "Euwe, Max"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "C82"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. c3 Bc5 10. Nbd2 O-O 11. Bc2 Bf5 12. Nb3 Bg4 13. Nxc5 Nxc5 14. Re1 Re8 $5
({Known is} 14... Bh5 {(Bronstein - Flohr, Moscow 1944).}) 15. Bf4 Bh5 16. Qd2
Bg6 17. Bxg6 hxg6 18. Rad1 Ne6 $6 ({Preferable is} 18... Ne7 $1 19. Bg5 c6 20.
Nd4 Qd7) 19. Ng5 d4 $2 {He does not have to give a pawn.} ({Better is} 19...
Rf8 $1 20. Nxe6 fxe6 21. Bg5 Ne7) 20. Nxe6 Rxe6 21. cxd4 Qd5 $1 {
Black blockades the centre.} 22. b3 Rd8 23. Be3 Rd7 24. f3 g5 $5 25. h3 Rg6 26.
Qc3 Nd8 27. Qc5 Ne6 28. Qxd5 Rxd5 29. Rd2 Kf8 30. Rc1 Ke7 31. Rc6 $1 a5 32.
Rdc2 $5 Kd7 33. Kf2 Rh6 34. Ke1 Rh8 35. Kd2 Rd8 36. Kd3 Ke8 37. Rxe6+ $5 (37.
Ke4 $1 Nxd4 $5 38. Bxd4 Rxd4+ 39. Kf5 R8d7 40. Kxg5 {wins easily.}) 37... fxe6
38. Rxc7 R8d7 39. Rxd7 Kxd7 $5 (39... Rxd7 $1 40. Bxg5 Rc7 41. Bd2 b4 {
offers more resistance.}) 40. Bxg5 Kc6 41. a3 $5 Rd7 42. Ke4 a4 43. b4 g6 (
43... Rc7 $5 44. f4 Kd7 45. f5 $1 exf5+ 46. Kxf5 Rc2 47. e6+ {
also wins for White.}) 44. f4 Rc7 45. g4 Kd7 46. f5 $1 gxf5+ 47. gxf5 exf5+ 48.
Kxf5 Rc3 49. e6+ $1 Kc8 ({Or} 49... Kd6 50. Bf4+ $1) 50. d5 Rxa3 51. d6 Rd3 52.
d7+ Kc7 53. Kg6 a3 54. Kf7 a2 55. Bf6 Rd6 56. Ke7 Rd1 57. Be5+ {
Euwe scored 3/4 against the top players in Mar del Plata.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "16"]
[White "Stahlberg, Gideon"]
[Black "Sanguinetti, Renato"]
[Result "1-0"]
[ECO "E95"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 O-O 5. e4 d6 6. Be2 Nbd7 7. O-O e5 8. Re1
Re8 9. Bf1 c6 10. d5 Qc7 $5 11. Bg5 h6 12. Be3 Kh7 $5 {
Black plays the King's Indian Defence quietly.} 13. h3 Nc5 14. Nd2 $5 a5 15. a3
$1 Nh5 $6 {The knight moves offside.} 16. Nb3 $6 (16. b4 $1 axb4 17. axb4 Rxa1
18. Qxa1 Na6 19. Qa4 {attacks on the queenside.}) 16... Na6 $5 17. Qd2 f5 $6
18. exf5 $1 gxf5 19. Na4 $5 c5 20. Qxa5 Qxa5 21. Nxa5 {White has won a pawn.}
Nb8 22. b4 Nd7 $5 23. Nc3 e4 24. Rac1 $6 (24. Nb5 $1 Bxa1 25. Rxa1 b6 26. Nxd6
Rf8 27. Nc6 {gains a decisive advantage.}) 24... Be5 25. Bd2 Rg8 26. Rb1 Bxc3
$2 {Black regains the pawn at a high price.} (26... Bf4 $1 27. Bxf4 Nxf4 {
defends well.}) 27. Bxc3 {The white bishop dominates the position.} b6 28. Nc6
Rxa3 29. Bb2 $1 Ra8 30. Ne7 Rf8 31. Ra1 $1 {He conquers the queenside.} Rb8 ({
Or} 31... Bb7 32. Rxa8 Bxa8 33. Ra1) 32. Ra7 Rb7 $2 33. Nxc8 $1 {Stahlberg had
equalised his score with Najdorf at the end of the penultimate round.} 1-0

[Event "Mar del Plata"]
[Site "10"]
[Date "1947.??.??"]
[Round "17"]
[White "Eliskases, Erich"]
[Black "Cruz, Walter"]
[Result "1-0"]
[ECO "D45"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1947.03.??"]
[SourceDate "1999.07.01"]

{Najdorf and Stahlberg played long games in the last round. Iliesco got an
easy win against Stahlberg, but his adversary escaped at the end. Najdorf
achieved little advantage versus Hounie Fleurquin at first but outwitted him
later. So Najdorf triumphed again.  Eliskases finished the event solidly.} 1.
Nf3 Nf6 2. b3 d5 3. Bb2 e6 4. e3 Bd6 5. c4 O-O 6. Nc3 c6 7. Qc2 Nbd7 8. Be2 a6
9. d4 Qe7 10. O-O b6 $5 (10... Re8 {happened in Nimzowitsch - Pirc, Bled 1931.}
) 11. e4 $1 {White takes the initiative.} dxe4 12. Nxe4 Nxe4 13. Qxe4 Bb7 14.
Rad1 Nf6 15. Qh4 Rfd8 16. Bd3 h6 17. Rfe1 Ne8 $6 ({Preferable is} 17... Ba3 18.
Ba1 a5) 18. Qh3 $1 Qc7 $6 {Cruz withdraws defenders.} 19. Ne5 c5 $2 {
He allows a decisive attack.} 20. d5 $1 Bc8 ({The pointe is} 20... exd5 21. Qf5
$1 {(Stalicka)} g6 $5 22. Nxg6 $1) 21. Qf3 $5 Bb7 22. Ng4 Qc8 $5 {
Black has no proper defence.} 23. Qh3 $5 Bf4 24. g3 Bg5 25. f4 f5 ({Or} 25...
Bf6 26. Nxf6+ Nxf6 27. Bxf6 gxf6 28. Qxh6 f5 29. dxe6) 26. fxg5 fxg4 27. Qh5
exd5 28. gxh6 d4 29. Re7 Nf6 30. Qf7+ {The final standings were: Najdorf 14/17,
Stahlberg 131/2, Eliskases 12, Pilnik 111/2, Euwe and Julio Bolbochan 101/2,
Rossetto 9, Jacobo Bolbochan, Guimard, Maderna and Marini 81/2, Michel and
Pizzi 61/2, Sanguinetti 6, Cruz 51/2, Luckis 5, Hounie Fleurquin 41/2, Iliesco
4.  Euwe scored a disappointing result. He was tired by the many simultaneous
displays.} 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "1"]
[White "Eliskases, Erich"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "A22"]
[Annotator "JvR"]
[PlyCount "93"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

{Six masters carried out double rounds in Buenos Aires and La Plata from 26 iv
until 6 v 1947. They played in chess clubs, such as Club Argentino de Ajedrez,
Jockey Club de la Plata, Boca Juniors and Club River Plate. I selected the
decided games from the event.} 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 e5 5. Bg2
Nxc3 6. bxc3 Be7 $5 ({Theory is} 6... c6) 7. Nf3 Nd7 $5 8. d4 exd4 9. cxd4 O-O
10. O-O c5 $6 11. Be3 Qa5 $6 12. Qc2 cxd4 13. Nxd4 Bf6 14. Rab1 $1 {
The development of the black queenside has become a problem.} Ne5 15. h3 Nc6 $4
16. Nxc6 bxc6 17. Qxc6 $1 ({Maybe Black expected} 17. Bxc6 $2 Bf5 $1 18. Qc5
Qxc5 19. Bxc5 Rac8) 17... Be6 ({The pointe is} 17... Bf5 18. Rb5 $1) 18. Qc5
Qxa2 19. Bxa8 Rxa8 20. Qxa7 $1 Qxa7 21. Bxa7 h5 22. Rb8+ Rxb8 23. Bxb8 Bxh3 24.
Rd1 {White has won an exchange.} Be6 25. f3 g6 26. Kf2 Kg7 27. Ba7 Bb3 28. Rd2
Be6 29. Bd4 Bxd4+ 30. Rxd4 Kf6 31. e4 Kg5 32. Rb4 Kf6 33. Ke3 Kg5 34. Rb5+ Kf6
35. Kf4 Bc4 36. Rb6+ Be6 37. e5+ Ke7 38. Rb7+ Kf8 39. Kg5 Kg7 40. Rb6 Bd5 41.
Rf6 Bb3 42. f4 Be6 43. f5 Bxf5 44. Rxf5 gxf5 45. Kxh5 Kf8 46. Kg5 Ke8 47. Kf6
1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "1"]
[White "Stahlberg, Gideon"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "E94"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. d5
a5 9. Ne1 Nc5 10. Bg5 $5 ({Known is} 10. Qc2) 10... h6 11. Bxf6 Qxf6 12. Nd3 {
The chances are about equal.} Qe7 $6 {He should exchange.} 13. Nxc5 dxc5 14.
Qd2 f5 15. Rad1 Ra6 16. Nb5 $1 {White charges in the centre.} fxe4 $6 (16...
Rd8 $1 {stops the advance.}) 17. d6 $1 cxd6 18. Nxd6 Kh7 19. Nxe4 Bf5 20. Bf3
a4 21. Qe3 Rb6 $6 {The black position becomes messy.} (21... b6 $1 {
consolidates the queenside.}) 22. Rd2 Bxe4 23. Bxe4 Rd8 24. Bd5 Qc7 25. Qe4 a3
$6 26. bxa3 Rf6 27. g3 Ra6 28. Rb1 b6 29. Rb3 $6 (29. h4 $1 h5 30. Bf7 $1 {
wins quickly.}) 29... Bf6 30. Rf3 Kg7 $2 31. Bf7 $1 Kxf7 32. Rxd8 Qxd8 33. Qb7+
Kg8 34. Qxa6 e4 35. Re3 Bd4 36. Rxe4 {Stahlberg defeated his great competitor.}
1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "2"]
[White "Pilnik, Herman"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D43"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c6 5. Bg5 h6 6. Bh4 dxc4 7. Bxf6 $5 ({
Theory is} 7. e4) 7... Qxf6 8. e3 b5 9. a4 Bb4 10. Be2 Nd7 11. O-O Bxc3 12.
bxc3 O-O 13. Nd2 a6 {Black has an extra pawn, but the chances are about equal.}
14. f4 $5 Nb6 $5 15. Bf3 Nxa4 16. Bxc6 $6 Ra7 17. Nxc4 Rc7 $5 18. Ne5 Qd8 $6 (
18... Nxc3 19. Qb3 Nd5 {gains a plus.}) 19. Bf3 $6 ({Preferable is} 19. Rxa4 $1
f6 $1 20. Ng6 Rxc6 21. Ra3) 19... Nxc3 20. Qd2 Nd5 $5 21. Rfc1 $5 Bb7 22. Rxc7
Qxc7 23. Bxd5 $2 {White opens his defence.} ({The prophylactic manoeuvre} 23.
Nd3 $1 Qb6 24. Nc5 {stops the attack on the queenside.}) 23... Bxd5 $5 {
Capture by the pawn would have been fine too.} 24. Rxa6 Rc8 $1 25. Nd3 Qc2 26.
Qxc2 Rxc2 {He has a won endgame.} 27. Rb6 $6 (27. g3 $1 Rg2+ 28. Kf1 Rxh2 29.
Nf2 $1 {offers more resistance.}) 27... Rxg2+ 28. Kf1 Kh8 $2 29. Nb4 Bf3 30. d5
$2 exd5 31. Rxb5 Rb2 32. Rb6 Rxh2 33. Nc6 Ra2 34. Nd4 Bg2+ 35. Kg1 Be4 36. Rb7
h5 37. Rxf7 h4 38. Ne6 Rg2+ 39. Kf1 h3 40. Nf8 Kg8 {Stahlberg won again.} 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "2"]
[White "Rossetto, Hector"]
[Black "Euwe, Max"]
[Result "1-0"]
[ECO "C53"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

{Again Euwe was the special guest.} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Bb6 5.
d4 Qe7 6. O-O Nf6 7. b4 d6 8. a4 a6 9. Ba3 Bg4 10. b5 Na5 11. Nbd2 $2 (11. Bd3
$1 {drew in Alexander - Michell, Hastings 1932.}) 11... Nxe4 $1 12. bxa6 $5 ({
The pointe is} 12. Nxe4 Nxc4) 12... Nxd2 13. axb7 $5 {
White makes a desperate action.} Nxf3+ 14. gxf3 Rb8 15. fxg4 Nxc4 {
Black has won a piece.} 16. a5 $5 Bxa5 $6 ({Better is} 16... Nxa5 $1 17. dxe5
O-O 18. exd6 Qf6) 17. Qa4+ Qd7 18. Qxc4 {White has regained the piece.} Qxg4+
19. Kh1 Qf3+ 20. Kg1 O-O $1 21. dxe5 $5 (21. Bxd6 cxd6 22. Rxa5 Rxb7 {
also wins for Black.}) 21... Rfe8 $1 22. Bxd6 $5 Re6 $1 {He threatens mate.}
23. Rfb1 Rg6+ 24. Kf1 Rg2 25. Qe2 Rg1+ $2 (25... Qh3 $1 {wins at once.}) 26.
Kxg1 Qxe2 27. Rxa5 Qg4+ 28. Kf1 $1 Qc4+ $5 29. Kg1 Qg4+ 30. Kf1 Qe4 $1 31. Rb4
Qh1+ 32. Ke2 cxd6 $4 ({Correct is} 32... h5 $1 33. Ra8 Rxa8 34. bxa8=Q+ Qxa8
35. Bxc7 Qa2+ {and Black has winning chances.}) 33. Ra8 $1 {
Suddenly the game is over.} ({Euwe notices} 33. Ra8 Rxa8 34. b8=Q+ $1 Rxb8 35.
Rxb8#) 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "3"]
[White "Eliskases, Erich"]
[Black "Euwe, Max"]
[Result "1-0"]
[ECO "A12"]
[Annotator "JvR"]
[PlyCount "135"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. c4 c6 2. Nf3 d5 3. b3 Bf5 4. Bb2 e6 5. g3 Nf6 6. Bg2 Nbd7 7. O-O h6 8. Nc3
Bh7 $5 {The bishop retreats before it is attacked by the e-pawn.} ({
An alternative is} 8... Be7 9. d3 O-O) 9. d3 Bc5 10. e4 $1 dxe4 11. dxe4 O-O
12. Qe2 ({Or} 12. e5 Ne4 $1) 12... Qe7 $2 {Max is going to suffer by restraint.
} (12... e5 $1 {closes the centre.}) 13. e5 $1 Ne8 {Black has a passive game.}
14. Rad1 Rd8 15. Ne4 Ba3 16. Bd4 Nb6 17. Ne1 Bxe4 $6 {
He exchanges a main defender.} 18. Bxe4 Nc7 19. Bb1 Bc5 20. Qe4 {
White controls the centre.} g6 21. Bxc5 $1 Qxc5 22. Nf3 Qe7 23. h4 h5 24. g4 $1
{The attack starts.} hxg4 25. Qxg4 Rxd1 26. Rxd1 Rd8 27. Re1 $1 Nd7 $6 (27...
Kf8 $1 28. Kg2 Nd7 29. Ng5 Kg8 30. Qg3 $1 Ne8 31. h5 $1 {
makes the decisive advance.}) 28. h5 $1 Nf8 29. Kg2 Ne8 30. Rh1 f5 $5 31. exf6
Qxf6 32. hxg6 {White has won a pawn.} Ng7 33. Qg5 Qxg5+ 34. Nxg5 Rd4 35. Nf7
Ne8 36. Kf3 Kg7 37. Ke3 c5 38. Ne5 Nd6 39. f4 Nc8 ({Or} 39... Nf5+ 40. Bxf5
exf5 41. Rh5 Nxg6 42. Rxf5) 40. b4 b6 41. Bd3 Rd6 42. bxc5 bxc5 43. Rb1 Rb6 44.
Rb5 Rxb5 45. cxb5 Nb6 46. Be4 Nfd7 47. Nxd7 Nxd7 48. Kd3 Nb6 49. Kc3 Nc8 50. a4
Nd6 51. Bd3 Kf6 52. a5 c4 53. Bxc4 Kxg6 54. Bd3+ Kf6 55. Kd4 Ke7 56. b6 axb6
57. axb6 Kd7 58. Kc5 Nb7+ 59. Kb5 Nd8 60. Ka6 $1 Kc6 61. Be4+ Kc5 62. Bh1 Kd4
63. Ka7 $1 e5 ({The pointe is} 63... Ke3 64. Kb8 Kxf4 65. Kc7) 64. f5 e4 65.
Kb8 e3 66. Bf3 Nc6+ 67. Kc7 Nb4 68. Kd6 {Euwe lost again.} 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "3"]
[White "Najdorf, Miguel"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D68"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Bd3
dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. Qb1 e4 14. Nd2 Nf6
15. b4 Bg4 $5 (15... a6 {happened in Najdorf - Sanguinetti, Mar del Plata 1945.
}) 16. Rfc1 Rac8 $6 ({Preferable is} 16... a6 $1 17. a4 Rad8 18. b5 axb5 19.
axb5 c5) 17. h3 Bh5 $2 (17... Bf5 $1 18. b5 Nd5 {defends the centre.}) 18. b5
$1 Bg6 19. Bb3 $1 Qd7 20. bxc6 bxc6 {Black has a horrible weakness.} 21. Qc2
Nd5 22. Bxd5 Qxd5 23. Rc5 Qe6 24. d5 $1 Qe7 25. dxc6 {
The extra pawn will decide the game.} f5 26. c7 Kh8 27. Qc3 f4 28. exf4 Rxf4
29. Qe3 Rf7 30. Nc4 $1 Rf6 $5 ({The pointe is} 30... Rxc7 31. Rxc7 Qxc7 32. Ne5
$1) 31. Ne5 Be8 32. Qxe4 Qe6 33. Qg4 Qa6 34. Ra5 Qb7 35. Rxa7 $1 Qxa7 36. Qxc8
Qxf2+ 37. Kh1 Rf8 38. Qe6 {Najdorf scored a positional win.} 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "3"]
[White "Stahlberg, Gideon"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "D90"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qa4+ c6 5. cxd5 Nxd5 6. Nf3 Bg7 7. e4 Nxc3 8.
bxc3 O-O 9. Ba3 b6 10. Qc2 $5 ({Known is} 10. Rd1) 10... Re8 $6 {
Black gets a crammed game.} ({Better is} 10... c5 $1 11. dxc5 $6 Qc7 $1) 11.
Rd1 Ba6 12. Bxa6 Nxa6 13. O-O Qc8 $5 14. Qb3 c5 15. Ng5 e6 16. e5 Qc6 17. Rfe1
c4 $6 {He misses a positional opportunity.} (17... Red8 $1 18. Ne4 Nc7 19. Nd6
cxd4 20. cxd4 Qd5 {frees the black position.}) 18. Qc2 Nc7 19. Qe2 a5 20. h4
Nd5 21. Qf3 $1 Ra7 22. h5 h6 $6 23. Ne4 g5 $2 (23... Qa4 $1 24. Bc1 Qxa2 25.
hxg6 fxg6 26. Qh3 Bf8 {brings a mutual confrontation.}) 24. Bc1 $6 f5 $2 (24...
b5 $1 25. Qg4 Kh7 26. f4 gxf4 27. Bxf4 b4 {defends and counters.}) 25. exf6 Rf7
$5 26. Qg3 $1 Bf8 27. f4 Bd6 28. Nxd6 Qxd6 29. Re5 $1 Nxf6 30. fxg5 Ne4 31. Qh4
Nxc3 32. Rde1 Nxa2 $5 33. g6 $1 Rd7 34. Bxh6 Qxd4+ 35. Qxd4 Rxd4 36. Rxe6 Rxe6
37. Rxe6 Rd8 38. Rf6 {
White threatens 39.g7 and 40.Rf8+.  Stahlberg won for the second time.} 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "5"]
[White "Euwe, Max"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Be7 8. f4
Qc7 9. a4 Nc6 10. Kh1 Bd7 11. Bf3 O-O 12. Nb3 Nb4 $5 13. e5 $6 {
Euwe plays too ambitiously.} ({Preferable is} 13. Be3 Rac8 14. a5) 13... Nfd5
$1 14. Nxd5 Nxd5 15. Qe2 $5 ({Slightly better is} 15. Re1 $1 dxe5 16. fxe5)
15... Nb6 $5 16. a5 Nc4 17. exd6 Nxd6 18. Rd1 Bb5 19. Qf2 Nf5 {
Black has an edge.} 20. Be3 $5 {Euwe sacrifices a pawn for counter-play.} (20.
c3 $6 Rad8 21. Be3 Rxd1+ 22. Bxd1 Nxe3 23. Qxe3 Rd8 {
brings an advantage for Stahlberg.}) 20... Nxe3 21. Qxe3 Qxc2 22. Nd4 Qc5 23.
Rac1 $1 Qb4 $1 24. Nxb5 $2 (24. Bxb7 $1 Rab8 25. Bc6 Bc5 26. Qc3 {
leads to the exchange of queens.}) 24... axb5 25. Bxb7 Rxa5 26. Qc3 Ra4 27. g3
Bf6 28. Qxb4 Rxb4 29. Rc2 Rb8 30. Bc6 h5 31. Rdd2 h4 32. Kg2 g6 33. Bf3 $5 Kg7
34. Be2 Rd8 35. Rxd8 Bxd8 36. Kh3 Rb3 37. Bd1 hxg3 38. Rd2 $2 {
He blunders a pawn.} (38. hxg3 Bf6 39. Rd2 Rxb2 40. Rxb2 Bxb2 41. g4 {
leads to the loss of a second pawn, but White can resist in the ending with
bishops of a different colour.}) 38... gxh2+ 39. Kxh2 Bc7 {
The former world champion lost for the third time.} 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "5"]
[White "Rossetto, Hector"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B26"]
[Annotator "JvR"]
[PlyCount "128"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 e6 6. d3 Nge7 7. O-O d6 8. Be3
Nd4 9. Qd2 Bd7 $5 10. Nd1 O-O 11. c3 Nxe2+ 12. Qxe2 Rc8 13. Qd2 Bb5 14. c4 Ba6
15. Nc3 Nc6 16. Bh6 Nd4 17. Bxg7 Kxg7 18. Ne2 Qf6 19. Nxd4 Qxd4 20. Rac1 b6 21.
Qc3 Bb7 22. Qxd4+ cxd4 23. f4 e5 24. b4 Rc7 25. fxe5 dxe5 {
Many exchanges have been made in the Closed Sicilian Defence.} 26. Rf2 Bc8 27.
Re1 Bd7 28. b5 Ra8 29. Ref1 Be6 30. Rb1 h6 31. a4 a5 32. Rbf1 Rb8 33. h4 g5 34.
Kh2 Rh8 35. Bh3 $6 ({More active is} 35. Bf3 $1 g4 36. Bd1 h5 37. Kg2) 35... g4
$1 {Black keeps the strong bishop.} 36. Bg2 h5 37. Kg1 Rh6 38. Rc1 Rf6 39. Rcf1
Rxf2 40. Kxf2 Kf8 41. Ke2 Ke7 42. Kd2 Rc8 43. Rf2 f6 44. Rf1 Rf8 45. Rf2 Kd6
46. Ke1 $6 (46. Kc2 $1 Kc5 47. Kb3 $1 {protects the queenside.}) 46... Kc5 $1
47. Rb2 $1 Rf7 48. Rb1 f5 49. Rb2 $5 (49. exf5 $2 Bxf5 50. Kd2 Bh7 51. Ke2 e4
$1 52. dxe4 Rf6 53. Rc1 Bg8 $1 {gives excellent winning chances for Black.})
49... Bc8 $6 (49... f4 $1 50. Kf2 f3 51. Bf1 $1 {
prevents a sacrifice on c4. Black cannot enter the position.}) 50. exf5 Bxf5
51. Rf2 $1 Bg6 52. Rxf7 Bxf7 53. Be4 Kb4 54. Kd2 $2 {
Rossetto errs in the bishop ending.} ({The subtle move} 54. Bc6 $1 {
draws, due to the potential threat c5.}) 54... Kxa4 55. Kc2 Kb4 56. Kb2 a4 57.
Bf5 Bxc4 $1 {Black sacrifices. Otherwise he cannot make progress.} 58. dxc4
Kxc4 59. Kc2 a3 60. Bd3+ $5 (60. Bg6 $1 Kb4 $1 {Zugzwang.} 61. Bf5 a2 $1 62.
Kb2 Kc4 63. Kxa2 Kc3 64. Kb1 Kd2 {also wins for Black.}) 60... Kd5 $1 61. Bg6
e4 $1 62. Bxh5 Ke6 63. Bxg4+ Kf6 64. h5 d3+ {The standings after one cycle
were: Stahlberg 41/2/5, Eliskases 31/2, Najdorf 3, Rossetto and Pilnik 11/2,
Euwe 1. Stahlberg made an incredible start in the elite event.} 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "6"]
[White "Rossetto, Hector"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. c3 Nbd7 5. Nbd2 Qc7 6. Bd3 e5 7. dxe5 Nxe5 8.
Nxe5 Qxe5 9. Nf3 Qc7 10. Qa4+ $6 ({More solid is} 10. b3 {
(Falcon - Maderna, Buenos Aires 1946).}) 10... Bd7 11. Bb5 Bd6 12. Bxd7+ Qxd7
13. Qxd7+ Kxd7 {Black has the better endgame.} 14. O-O $5 Ne4 15. Bd2 $6 (15.
b4 $1 Nxc3 16. bxc5 Bxc5 17. Bb2 Bb4 18. Bxc3 Bxc3 19. Rab1 b6 20. Rfd1 {
almost equalises.}) 15... a5 16. Rad1 a4 17. a3 $5 Kc6 18. Bc1 f5 19. Nd2 Rhe8
20. c4 $1 {White counters at last.} dxc4 21. Nxc4 Bc7 22. f3 $6 {
Pawn e3 becomes a weakness.} (22. Nd2 $1 Nd6 23. Nf3 Nc4 24. Rd3 Rad8 25. Rfd1
{reorganises the white defence.}) 22... Nf6 23. Rfe1 b5 24. Nd2 Rad8 25. Nf1 c4
$5 26. g3 $2 (26. Ng3 $1 g6 27. Ne2 Be5 28. Kf1 {offers more resistance.})
26... Nd7 $1 27. Kg2 Nc5 28. Rxd8 Bxd8 29. Bd2 Nd3 $1 {
Eliskases overwhelms his opponent with few means.} 30. Rb1 Bf6 $1 31. Bc3 b4 $1
32. axb4 Kb5 $5 33. f4 $5 a3 $1 ({The pointe is} 33... a3 34. Bxf6 gxf6 35.
bxa3 c3 $1 {and the c-pawn cannot be stopped.}) 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "7"]
[White "Eliskases, Erich"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E18"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. d4 O-O 6. O-O b6 7. cxd5 exd5 8. Nc3
Bb7 9. Ne5 Qc8 10. Bg5 Qe6 $5 11. Qb3 $1 Rd8 12. Nd3 $5 {
Eliskases manoeuvres quietly.} (12. e4 $1 dxe4 13. Qxe6 fxe6 14. Nxe4 Bxe4 15.
Bxf6 Bxg2 16. Bxe7 Bxf1 17. Bxd8 Nd7 $1 18. Nxd7 Rxd8 19. Ne5 {
slightly favours White.}) 12... Nc6 13. Nf4 Qf5 14. Bxf6 Bxf6 15. e3 Ne7 16. h4
{White threatens Bh3.} g5 $5 17. hxg5 Qxg5 18. Rfd1 Bg7 19. Rd2 c6 20. Qd1 Bc8
21. Qh5 h6 $1 {Najdorf plays for a win.} 22. Bf3 Bf5 23. Kg2 Ng6 24. Nce2 Rac8
25. Rh1 Rd6 26. Kf1 $5 Re8 27. Qh2 $5 Bc8 $1 28. Qg2 $2 {
His position becomes passive.} (28. Rc2 $1 Qf5 $5 29. Rc1 {
betters the position of a rook.}) 28... Qf5 $1 {Black threatens ..Qb1+.} 29.
Nd3 $5 Rf6 $1 30. Nef4 Nxf4 31. gxf4 Rg6 32. Qh2 Ba6 33. Be2 c5 $1 34. dxc5 d4
$1 {The attack becomes strong.} 35. Qh3 ({Najdorf mentions} 35. exd4 $2 Rxe2)
35... Qd5 36. Ne1 Qxa2 37. f5 $5 dxe3 $5 38. fxe3 Bc8 $1 39. e4 bxc5 40. Qh4
Rb6 $1 {The game is adjourned.} 41. Rd8 $1 {Eliskases expects to win.} Kf8 42.
Bb5 $1 {Najdorf experiences a surprise.} Rxb5 43. f6 $1 {
This advance has been prepared.} Qa6 $3 {
He finds a brilliant refutation at the board.} ({Eliskases expected} 43... Qxb2
$6 44. fxg7+ Qxg7 45. Rg1 Qh7 $2 ({Right is} 45... Bh3+ $1) 46. Rg8+ $1 Qxg8 $2
47. Qxh6+ Qg7 48. Rxe8+ {and White wins (Najdorf).}) 44. fxg7+ Kxg7 45. Nd3 ({
The pointe is} 45. Rxe8 Rxb2+ $1 46. Kg1 Qg6+ 47. Kf1 Ba6+ {(Najdorf)} 48. Nd3
Qg2+ 49. Ke1 Qe2#) 45... Rb6 $1 46. Rg1+ Kh7 47. Ke2 Rbe6 48. Rxe8 Rxe8 49. Ke3
Qd6 50. e5 Bf5 $1 51. Qc4 Bg6 52. Rf1 Kh8 53. Qc3 f6 54. Rf4 Bxd3 55. Qxd3
Rxe5+ 56. Re4 Qxd3+ 57. Kxd3 Rxe4 58. Kxe4 h5 {
Najdorf moved from third to second place.} 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "7"]
[White "Euwe, Max"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "C64"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Qf6 5. Nc3 Nge7 6. d3 h6 7. Be3 Bb6 8.
Bxc6 $5 dxc6 9. d4 Bg4 $6 {Rossetto overestimates his chances.} ({Preferable is
} 9... Ng6) 10. dxe5 Qe6 $2 ({Correct is} 10... Qg6 $1 11. Bxb6 axb6 12. Qd3
Qh5 {and Black regains the pawn.}) 11. Bxb6 axb6 12. Nd4 $1 Qg6 $6 {
Black has lost a pawn.} (12... Bxd1 $1 13. Nxe6 fxe6 14. Raxd1 g5 $1 {
brings a last chance in the endgame.}) (12... Qxe5 $2 13. Qxg4 Qxd4 14. Rad1 {
(Euwe)} f5 15. Qg3 {wins for White.}) 13. f3 Bh3 14. Qe2 O-O-O 15. Rad1 f6 16.
exf6 gxf6 17. Kh1 Bd7 18. Qf2 h5 19. Rd2 Rdg8 20. Rfd1 Kb8 21. b4 $1 h4 22. a4
Qh6 23. a5 $1 Bc8 24. axb6 cxb6 25. Na4 b5 26. Nb6 Qf4 27. Ra1 $1 {
White threatens 28.Ra8+ Kc7 29.Nxb5+ cxb5 30. Qc5+ Nc6 31.Nd5+ (Euwe).} Qe5 28.
f4 $1 Qxe4 29. Re2 Qh7 30. Nxb5 $1 cxb5 31. Qc5 Nc6 32. Qd6+ {
Max delivers mate in one.} 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "7"]
[White "Stahlberg, Gideon"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "E72"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. g3 O-O 6. Bg2 Nbd7 7. Nge2 e5 8. d5
a5 9. O-O Nc5 10. Be3 b6 11. f3 Ne8 $5 12. a3 $1 f5 13. b4 Nd7 $6 ({
Preferable is} 13... f4 $1 14. bxc5 fxe3 15. cxb6 cxb6) 14. Qd3 Qe7 15. Bh3 $6
(15. exf5 Rxf5 16. Bh3 {gains an edge.}) 15... axb4 $2 {
Pilnik commits the decisive error.} (15... fxe4 $1 16. Nxe4 Nc5 $1 17. bxc5
Bxh3 {equalises.}) 16. axb4 Rxa1 17. Rxa1 fxe4 18. Nxe4 $1 Nc5 $5 ({
The pointe is} 18... Rxf3 19. Be6+ Kh8 {(Euwe)} 20. Ra8 $1 Bb7 21. Ra7 Bc8 22.
Kg2 Rf8 23. Bg5 Bf6 24. Nxf6 Nexf6 25. Rxc7 {and Black suffocates.}) 19. bxc5
Bxh3 20. cxb6 cxb6 21. Bxb6 {Stahlberg has won a pawn.} Qf7 22. Ra3 Bg4 $5 23.
Kg2 $1 Qb7 24. fxg4 $1 Qxb6 25. Qb3 Qc7 26. g5 Qf7 27. Ra1 h6 28. g4 $5 hxg5
29. N2g3 Bf6 30. Rf1 Qd7 31. c5 $1 {White breaks the defence.} dxc5 $2 (31...
Bd8 $1 32. Rxf8+ Kxf8 33. Qf3+ Kg7 34. c6 Qa7 {offers more resistance.}) 32.
Nxc5 Qd8 33. d6+ Kh8 34. d7 Qa8+ 35. Qf3 Qa2+ 36. Rf2 {
Stahlberg kept on winning.} 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "8"]
[White "Euwe, Max"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "C10"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bd3 c5
8. dxc5 Bxc5 9. Bg5 Bd7 $5 ({Usual is} 9... O-O) 10. O-O Bc6 $5 11. Qe2 h6 12.
Bh4 Qd5 13. Rad1 $1 Qh5 $1 ({The greedy} 13... Qxa2 $2 14. Ne5 $1 Qxb2 15. Bc4
$1 {favours White.}) 14. Bxf6 gxf6 $6 (14... Bxf3 $1 15. Bb5+ Kf8 16. Bxg7+
Kxg7 17. Qxf3 Qxf3 18. gxf3 Kf6 {leads to equality.}) 15. Be4 $1 {
White achieves an advantage.} Rc8 16. Bxc6+ Rxc6 17. Rd3 O-O 18. Rfd1 $1 Rfc8
19. Qd2 b5 20. c3 e5 $6 21. Kh1 $1 {A trap is set.} Bb6 $2 {
Eliskases misses the tactics.} ({The first pointe is} 21... e4 $2 22. Rd5 {
(Euwe).}) ({Max prefers} 21... Kh7) 22. g4 $1 {
The second pointe becomes apparent.} Qg6 {The pawn should not be taken.} 23.
Nh4 Qg5 24. Nf5 $1 h5 $5 {Black has no serious defence.} 25. Ne7+ Kf8 26. Nxc8
Rxc8 27. Qxg5 fxg5 28. gxh5 Kg7 29. Rf3 e4 30. Rf5 b4 31. Rd7 Kh6 32. Rdxf7
Kxh5 33. Rg7 bxc3 34. Rfxg5+ Kh6 35. R5g6+ Kh5 36. Rg3 Kh6 37. bxc3 Bxf2 38.
Rg8 {Euwe recovered during the second cycle.} 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "8"]
[White "Pilnik, Herman"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B84"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Be7 8. f4
Qc7 9. Bf3 Nc6 10. Nb3 O-O 11. Qe1 b5 12. Be3 Bb7 13. Rd1 Nd7 $5 14. Qf2 Rab8
15. Ne2 Ba8 16. Ned4 Nxd4 17. Bxd4 e5 18. Be3 Nf6 19. fxe5 dxe5 20. Nc5 Rbc8
21. b4 a5 22. a3 Bc6 23. Qg3 Rfe8 24. Kh1 $2 (24. Rfe1 {
protects pawn e4 indirectly.}) 24... Bxc5 25. Bxc5 Nxe4 26. Bxe4 Bxe4 {
Black has won a pawn.} 27. Rd2 axb4 28. axb4 Rcd8 29. Rfd1 Rxd2 30. Rxd2 f5 31.
Qb3+ Qf7 32. Qxf7+ Kxf7 33. Rd7+ Kf6 34. Rd6+ Re6 $1 35. c3 Rxd6 36. Bxd6 g5 {
Black wins, despite the bishops of a different colours.} 37. Kg1 f4 38. Kf2 Bd5
39. Bc7 Kf5 40. Bd8 e4 41. Be7 e3+ 42. Kf1 g4 {
The central pawns cannot be stopped.} 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "8"]
[White "Rossetto, Hector"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 b6 5. O-O Bb7 6. b3 Be7 7. Bb2 O-O 8. Nbd2
a5 $5 ({Usual is} 8... Nbd7) 9. Qe2 Ne4 10. a3 Nd7 11. c4 f5 12. Rac1 Bd6 13.
Ne5 Bxe5 14. dxe5 Nxd2 15. Qxd2 Nc5 16. Qc3 $2 dxc4 $2 ({
Stahlberg misses the opportunity} 16... Qg5 $1 17. f4 Qxg2+ $5 18. Kxg2 d4+ 19.
Kh3 dxc3 20. Rxc3 Rfd8 {and Black attacks.}) 17. Bxc4 Qg5 18. f3 Rad8 19. Rce1
Bd5 20. Re2 Rf7 21. Qc2 Bxc4 22. Qxc4 Rd5 23. b4 axb4 24. axb4 Nb7 25. e4 fxe4
26. Qxe4 Qf4 27. Ra1 Qxe4 28. Rxe4 Rfd7 29. Ra8+ Nd8 30. Kf2 Kf7 31. Kg3 h6 32.
h4 Rd2 33. Rf4+ Kg6 34. Bc3 Rc2 35. Rg4+ Kh7 $1 36. Rc4 b5 37. Rc5 c6 38. h5 g6
39. hxg6+ Kxg6 40. Kh3 $6 Kf5 $1 41. g3 $2 {
White blunders after the time control has passed.} ({Correct is} 41. Ba1 $1
Rxc5 42. bxc5 Kf4 {and Black has little advantage.}) 41... Rd1 $1 {
He threatens mate.} 42. Ra1 Rxa1 43. Bxa1 Rxc5 44. bxc5 Nb7 {
Rossetto scored poorly during the second cycle.} (44... Nb7 45. Bd4 b4 $1 46.
Kh4 Kg6 47. Kg4 b3 48. Kf4 Nxc5 $1 {
wins the knight versus bishop ending easily.}) 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1947.??.??"]
[Round "9"]
[White "Rossetto, Hector"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1947.04.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 Nbd7 5. Nbd2 Qc7 6. Qa4 e6 7. Bd3 Bd6 8.
dxc5 Bxc5 9. O-O O-O 10. Qh4 Re8 $5 (10... Be7 $6 11. Bxh7+ Nxh7 12. Qxe7 Nhf6
{favoured White in Colle - Spielmann, Bled 1931.}) 11. e4 dxe4 12. Nxe4 Nxe4
13. Bxe4 Nf8 14. Re1 a5 15. Bf4 Qe7 16. Qg3 f6 17. Rad1 e5 18. Be3 Bxe3 19.
Rxe3 Be6 20. Nh4 Qf7 21. Qf3 Rad8 22. Red3 Rxd3 23. Qxd3 g6 24. Qb5 Bxa2 25.
Qxa5 f5 26. Qxa2 Qxa2 27. Bd5+ Qxd5 28. Rxd5 e4 29. g3 Re7 30. Kf1 Rd7 31. Rb5
Ne6 32. Ke2 Kf7 33. f3 Ng5 34. fxe4 Nxe4 35. Nf3 Re7 36. Kd3 Ke8 37. Kd4 Rd7+
38. Rd5 Rc7 39. c4 Ke7 40. b4 b6 {White has the pawn majority on the queenside
in the endgame and makes an effort to win.} 41. Ne5 Nd6 42. c5 bxc5+ 43. bxc5
$6 ({Correct is} 43. Rxc5 Rb7 44. Nd3 Nb5+ 45. Ke5 Nd6 {and Black draws.})
43... Nb5+ 44. Kc4 Na3+ 45. Kb4 Ke6 $1 46. Rd3 $1 Nc2+ $5 (46... Kxe5 47. Rxa3
Kd4 48. Ra5 {brings a white survival.}) 47. Kb3 $4 {
Rossetto misses a brilliant escape.} ({Right is} 47. Kc4 $3 Kxe5 48. Rc3 Na1
49. Ra3 $1 {drawn.}) 47... Kxe5 48. Kxc2 Rxc5+ {The final standings became:
Stahlberg 8/10, Najdorf 61/2, Eliskases 51/2, Euwe 41/2, Pilnik 31/2, Rossetto
2.  Euwe had a bad result. He continued the exhausting touring and met a
disaster in the world championship The Hague/Moscow 1948.  Najdorf and
Stahlberg tried to talk themselves into the world championship tournament but
were not allowed. They showed themselves as top ten players in the interzonal
Saltsjobaden 1948. The new star became Bronstein.} (48... Rxc5+ 49. Kb3 g5 50.
Rd7 f4 $1 51. Rxh7 fxg3 $1 52. hxg3 Ke4 53. Rf7 Rf5 {wins for Black.}) 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "1"]
[White "Najdorf, Miguel"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "D81"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

{The eleventh tournament in Mar del Plata happened from 13 until 31 iii 1948.
Special guests among the eighteen participants were Medina, O'Kelly, Szabo and
Denker.} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3 dxc4 5. Qxc4 Be6 6. Qb5+ Nc6 7.
Nf3 Rb8 ({The alternative is} 7... Nd5 $1 8. e4 Ndb4 9. Qa4 Bd7 {
(Yudovich - Belavenets, Tbilisi 1937).}) 8. e4 a6 9. Qd3 $1 {
Najdorf betters the theory and gains an advantage.} (9. Qa4 $6 b5 10. Qd1 $6 {
happened in Van Epen - Szabo, Baarn 1939.}) 9... Bg4 10. d5 Bxf3 11. gxf3 $1
Ne5 12. Qd1 Bg7 $2 ({Preferable is} 12... e6 $1 13. f4 Ned7 14. dxe6 fxe6 15.
e5 Nh5 16. Qg4 Ng7) 13. f4 $1 Ned7 14. e5 $1 Ng8 {
Szabo faces a positional disaster.} 15. Bh3 e6 $2 (15... c6 16. dxc6 bxc6 17.
O-O Nh6 {offers more resistance.}) 16. dxe6 fxe6 17. Be3 $1 (17. Bxe6 Nc5 {
liberates the black position (Euwe).}) 17... Nf8 18. Qb3 Qc8 19. Ne4 Ne7 20.
Rc1 {White threatens Nd6+} Nc6 21. O-O h6 22. Rfd1 Rh7 23. Nc5 Kf7 24. Bxe6+ $1
{Szabo experienced the harshness of the competition immediately.} ({
The pointe is} 24. Bxe6+ Nxe6 25. Rd7+ {(Euwe).}) 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "2"]
[White "O'Kelly de Galway, Alberic"]
[Black "Medina Garcia, Antonio"]
[Result "0-1"]
[ECO "C91"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d6 9. d4 Bg4 10. h3 Bxf3 11. gxf3 Na5 12. Bc2 Nh5 13. f4 Nxf4 14. Bxf4 exf4 {
The opening favours Black.} 15. Qg4 $5 Qc8 $1 16. Qf3 $2 (16. e5 $5 Qxg4+ 17.
hxg4 dxe5 18. Rxe5 {brings some action.}) 16... c5 $1 {
An irresistible attack begins.} 17. dxc5 Nc4 $5 18. Kg2 (18. cxd6 Bxd6 {
also brings a plus for Medina.}) 18... Qxc5 $1 19. Qxf4 ({Or} 19. b3 Qg5+ 20.
Qg4 f3+ $1 21. Kh2 Qxg4 22. hxg4 Ne5) 19... Bg5 $5 20. Qg3 Qe5 $6 (20... Nxb2 {
wins easily.}) 21. Qxe5 dxe5 22. b3 Nb6 23. a3 Rfd8 24. Ra2 Rd6 25. Bd1 Nd7 26.
b4 Nf8 27. Be2 Ng6 28. Kg1 Nf4 $1 29. Bf1 Rad8 30. a4 bxa4 31. Rxa4 Rd1 32.
Rxd1 Rxd1 33. Rxa6 h5 $1 {Black has a decisive attack.} 34. Na3 Nxh3+ 35. Kg2
Nf4+ 36. Kg1 h4 37. b5 h3 38. b6 Rxf1+ $1 {
The champion of Spain defeated the champ of Belgium.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "3"]
[White "Eliskases, Erich"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "A49"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 O-O 5. Bg2 d6 6. d4 Nbd7 7. O-O e5 8. dxe5
$1 {Eliskases starts a new aggressive line.} ({The quiet} 8. c4 {
occurred in Sultan Khan - Alexander, Hastings 1932.}) 8... Ng4 $1 9. Nbd2 (9.
c4 $1 {will become usual.}) 9... Ngxe5 10. Nxe5 Nxe5 11. Rb1 d5 12. h3 Qe7 13.
e4 dxe4 14. Nxe4 Bf5 15. Re1 Qb4 $6 16. Qc1 {Erich plays quietly.} Rfe8 17. Qf4
Qa5 18. a4 Nd3 $1 19. cxd3 Bxb2 20. b4 $1 Qe5 21. Qxe5 Bxe5 22. Nc5 $1 Rad8 23.
g4 $5 Bxd3 $4 {Najdorf blunders a piece.} ({Correct is} 23... Bc8 24. Bxb7 Bxb7
25. Nxb7 Rxd3 {and White has little advantage.}) 24. Rbd1 $1 {
Eliskases would produce a great score.} 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "3"]
[White "Rossetto, Hector"]
[Black "O'Kelly de Galway, Alberic"]
[Result "1-0"]
[ECO "A34"]
[Annotator "JvR"]
[PlyCount "117"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7 6. Nf3 Nc6 7. O-O e5 8. d3
f6 9. Be3 Qd7 $5 {
This move looks odd but Black will develop his queen's bishop elsewhere.} ({
Known is} 9... Be6) 10. Rc1 b6 11. Qa4 Bb7 12. Nh4 Nd8 $5 13. Qxd7+ Kxd7 14.
Bh3+ Nde6 15. f4 Bd6 16. Nf5 exf4 17. gxf4 Rhd8 $5 18. d4 $5 cxd4 19. Nxd4 Ke7
20. Ncb5 Nxb5 21. Nxb5 Bb8 22. Bg4 a6 $6 {Pawn b6 becomes vulnerable.} 23. Bxe6
Kxe6 24. Nc7+ Bxc7 25. Rxc7 Be4 26. Rfc1 $5 b5 $5 27. Rxg7 Rg8 28. Rcc7 Rxg7+
29. Rxg7 {White has won a pawn, but he can achieve little.} Rc8 30. Bd4 Rd8 31.
Bc3 Bg6 32. Kf2 Kf5 33. e3 Rd6 34. Rc7 Kg4 35. Bd4 Be4 36. a3 Rc6 $6 {
Black makes an unnecessary sacrifice.} ({Better is} 36... h5 $1 37. Rg7+ Kh3
38. Kg1 h4 {drawn.}) 37. Rxc6 Bxc6 38. Bxf6 {
White has two extra pawns in the ending with bishops of a different colour.}
Be4 39. Ke2 Kh3 40. Be5 Kxh2 $6 ({Preferable is} 40... h5 41. Kf2 a5 {
and the white pawns cannot advance.}) 41. f5+ $1 Kg2 42. f6 Bg6 43. e4 h5 44.
Ke3 h4 45. Kf4 h3 46. Kg5 Bf7 47. Kf5 Kf3 $2 {
O'Kelly blunders after several inaccuracies.} (47... Bb3 48. Kg6 Kf3 49. f7
Bxf7+ 50. Kxf7 Kxe4 51. Ke6 Kd3 {leads to an escape by Black.}) 48. Bh2 $1 Bb3
({Or} 48... Kg2 49. Bf4 $1 Kf3 50. e5 $1 Ba2 51. e6) 49. e5 $1 Bc2+ 50. Ke6 Kg2
51. Bf4 Kf3 52. Ke7 $1 Kxf4 53. f7 h2 54. f8=Q+ Kg3 55. Qg7+ Kh3 56. Qh6+ Kg3
57. Kd6 Kg2 58. Qd2+ Kg3 59. Qc3+ {Rossetto has won the ending.} 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "4"]
[White "O'Kelly de Galway, Alberic"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "B51"]
[Annotator "JvR"]
[PlyCount "165"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O a6 5. Bxc6+ bxc6 6. b3 $5 {
O'Kelly plays it cool.} Bg4 7. Bb2 e6 $6 (7... e5 $1 {will become usual.}) 8.
d3 Nf6 9. Nbd2 Be7 10. e5 $1 dxe5 11. Qe1 Bxf3 12. Nxf3 Nd7 13. Nxe5 Nxe5 14.
Bxe5 {Black has a weakness in his position.} O-O 15. Qe3 Qd5 16. Rae1 Rfe8 17.
Qg3 f6 18. Bc3 e5 19. Re4 Bd6 20. Qh3 Re7 21. Rfe1 Rae8 22. Qf5 Rf8 23. Ra4 Ra7
24. h4 g6 25. Qh3 f5 26. Qe3 f4 27. Qh3 Rf5 28. Bb2 Bf8 29. Rf1 Bd6 30. Re1 Bf8
31. Rae4 Bg7 32. h5 $1 Ra8 $2 ({The pointe is} 32... Rxh5 $2 33. Qc8+ Kf7 34.
Rxf4+ $1 exf4 35. Qe8#) ({Better is} 32... Bf6 33. hxg6 hxg6 34. Qg4 Kg7) 33.
hxg6 hxg6 34. Qf3 $2 {O'Kelly misses a chance.} ({A pawn wins} 34. g4 $1 fxg3
35. Qxg3 {because White attacks e5 and g6.}) 34... Rh5 35. Kf1 Rh1+ 36. Ke2
Rxe1+ 37. Kxe1 Rb8 38. Bc3 Rf8 39. Kd2 Rd8 40. Ra4 Ra8 41. Qxd5+ $5 {
Manoeuvring in the endgame follows.} cxd5 42. Ra5 Bh6 43. Kd1 d4 $1 44. Bb2 Bf8
45. Ke2 Kf7 46. Kf3 Ke6 47. Ke4 Kd6 $1 48. b4 $1 {White creates an entry.} cxb4
49. Rxe5 Rc8 50. Rd5+ Ke6 51. Ra5 Rxc2 52. Rxa6+ Bd6 53. Bxd4 {
O'Kelly has won a pawn.} Re2+ 54. Kf3 Rc2 55. Ke4 Re2+ 56. Kf3 Rc2 57. Ba7 Kd5
58. Ra5+ Ke6 59. d4 Kd7 60. Bb6 Rd2 61. d5 Ke7 $2 {
The king moves in the wrong direction.} (61... g5 $1 62. Kg4 $5 Kc8 $1 63. Kxg5
$5 Kb7 64. Ba7 Bc7 $1 65. Ra4 Rxd5+ {draws.}) 62. Ke4 Re2+ $5 63. Kf3 $5 Rd2
64. Ke4 Re2+ 65. Kd3 $1 Re5 66. Ra7+ Ke8 67. Kc4 Rg5 $6 (67... g5 $1 {
grabs the last chance.}) 68. Ra8+ Kf7 69. Kb5 $1 Rxd5+ 70. Kc6 Rd3 71. Rd8 $1
Ke6 72. Bc5 $1 Bxc5 73. Rxd3 Bxf2 74. Rd2 Be3 75. Rb2 g5 76. Rxb4 g4 77. Re4+
Kf5 78. Kd5 Bf2 79. Re7 $5 Bh4 80. Re5+ Kf6 81. Ke4 f3 82. gxf3 g3 83. Rf5+ {
Najdorf had lost again!} 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "6"]
[White "Sanguinetti, Renato"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "E29"]
[Annotator "JvR"]
[PlyCount "54"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Nf3 d6 8. Bd3
Nc6 9. e4 $5 {A new line of the Nimzo Indian Defence starts.} e5 10. d5 Ne7 11.
Nh4 Ng6 (11... Ne8 $5 {will become a novelty.}) 12. Nf5 Nf4 13. Ne3 $6 {
White retreats.} ({Preferable is} 13. O-O) 13... Qa5 14. Bb2 Ng4 $1 15. Nxg4 $2
{He misses a tactical point.} ({Correct is} 15. Bf1 $1 Nxe3 16. fxe3 Ng6 17.
Be2) 15... Bxg4 16. f3 Nxg2+ $1 17. Kf2 Bh3 18. Qc2 (18. Kg3 $5 Qd8 $5 19. Kxh3
Nf4+ 20. Kg3 Qg5+ 21. Kf2 Qg2+ 22. Ke3 Qxb2 {wins for Black.}) 18... Qd8 19.
Rag1 Qh4+ 20. Ke2 Nf4+ 21. Kd1 Qh5 22. Rg3 Bg2 $1 23. Rg1 Bxf3+ 24. Kc1 g6 25.
Rg5 Qh4 26. R5g3 Nxd3+ 27. Qxd3 Qf4+ {Szabo showed himself as an attacker.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "8"]
[White "Stahlberg, Gideon"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "D63"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. a3
Ne4 9. Bxe7 Qxe7 10. Bd3 Nxc3 11. Rxc3 dxc4 12. Bxc4 e5 13. O-O e4 14. Nd2 Nf6
15. Qb1 $5 Kh8 $5 16. b4 Be6 17. Bxe6 Qxe6 18. Rc5 Nd7 19. Rc3 f5 20. Qb3 $5
Qh6 $6 {Black spoils time. Exchange would have equalised.} 21. b5 $1 Rac8 22.
bxc6 Rxc6 23. Rxc6 Qxc6 24. Qc4 Rc8 25. Rc1 g6 $6 ({Immediate simplification by
} 25... Qxc4 $1 26. Rxc4 Nb6 27. Rxc8+ Nxc8 28. f3 exf3 29. gxf3 Kg8 {
almost equalises.}) 26. f3 $1 exf3 27. gxf3 Kg7 28. Kf2 Kf6 29. e4 $1 Qxc4 30.
Rxc4 Rxc4 31. Nxc4 {White rules the centre in the knight ending.} fxe4 $2 {
Rossetto loses his last grip on the centre.} (31... Ke6 $1 32. a4 b6) 32. fxe4
b5 33. Nd6 a6 34. Ke3 g5 $5 35. Ne8+ $1 Kf7 36. Nc7 Nb6 $5 {
Black seeks counter-play.} 37. d5 $1 Nc4+ 38. Kd4 Nxa3 39. e5 $1 {
White comes first.} Nc4 40. Nxa6 h5 41. Nc7 Nxe5 42. Kxe5 b4 43. Ne6 g4 44. d6
$1 Ke8 ({The pointe is} 44... b3 45. d7 b2 46. d8=Q b1=Q 47. Qf8+ Kg6 48. Qg7#)
45. Nc5 {Stahlberg and Eliskases competed for the first place.} 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "9"]
[White "O'Kelly de Galway, Alberic"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D26"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 a6 6. O-O b5 7. Bd3 c5 8. a4 $5
b4 9. Nbd2 Bb7 10. Qe2 Be7 11. dxc5 O-O 12. e4 Nfd7 $1 13. Nb3 Nc6 $2 (13...
Nxc5 14. Nxc5 Bxc5 {regains the pawn timely.}) 14. Be3 Na5 15. Nfd2 Ne5 16.
Nxa5 Qxa5 17. Rfc1 Nxd3 18. Qxd3 Qc7 19. Nc4 Rfd8 20. Qc2 b3 $5 21. Qb1 $5 Rab8
22. Rc3 Bf6 $6 (22... Bc6 $1 {blockades the extra pawn.}) 23. e5 $1 Be7 24. Nd6
$1 Bd5 25. Bh6 $1 {A great sacrifice is made!} gxh6 26. Rg3+ Bg5 27. h4 f6 $1 (
27... Qxc5 28. hxg5 h5 29. g6 $1 fxg6 30. Rxg6+ $1 hxg6 31. Qxg6+ {
leads to mate.}) 28. hxg5 $5 fxg5 29. Qc1 $5 Rd7 $5 30. Qe3 Rf8 31. Rc1 Rg7 $6
(31... Qc6 $1 {stops the passed pawn.}) 32. c6 $1 Rb8 33. Rc5 Rf8 34. a5 Kh8
35. Qe2 Qa7 36. Rgc3 Qc7 ({Or} 36... Rc7 37. Qh5 $1) 37. Qxa6 g4 38. Qb6 g3 39.
Rxg3 Rxg3 40. fxg3 Qg7 41. Rxd5 $1 {O'Kelly fought hard.} (41. Rxd5 exd5 42. c7
Qxg3 43. Nf7+ $1 {wins quickly.}) 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "10"]
[White "Denker, Arnold"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "E08"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Be7 5. g3 O-O 6. Bg2 Nbd7 7. b3 c6 8. O-O
b6 9. Qc2 Ba6 $5 10. Rd1 {White sacrifices a pawn.} Rc8 {
Black postpones the capture.} 11. e4 $1 dxc4 12. bxc4 $6 ({
An alternative becomes} 12. Qe2 $5 {(Tal - Saidy, Tallinn 1971).}) 12... Bxc4
13. h4 $6 (13. e5 Ne8 14. Ne4 {will be played.}) 13... h6 14. Bh3 b5 15. Nd2
Nb6 16. Nxc4 Nxc4 17. Ne2 Qb6 18. Nf4 $2 ({Play is created by} 18. e5 $1 Nd5
19. Bxh6 $1 Rfd8 $1 20. Bg5) 18... Rcd8 19. e5 Nd5 20. Nxe6 $5 {
A desperate action starts already.} fxe6 21. Bxe6+ Kh8 22. Bxh6 $1 Nc7 $6 (
22... Nxe5 $1 23. dxe5 Rxf2 $1 24. Qxf2 Bc5 {ends the game.}) 23. Bxc4 $6 (23.
Qg6 Nxe6 24. Qxe6 {brings turmoil.}) 23... gxh6 $1 24. Qg6 $5 c5 $1 25. e6 Rf6
$1 26. dxc5 Rxd1+ 27. Rxd1 Qxc5 28. Rd8+ $5 Bxd8 29. e7 Qxf2+ 30. Kh1 Qe1+ 31.
Kh2 Qd2+ {Black captures a queen on the next move.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "10"]
[White "Stahlberg, Gideon"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "E14"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 c5 6. O-O Be7 7. b3 O-O 8. Nc3 d5
9. Bb2 {A classical position has been reached.} Nbd7 10. Qe2 Ne4 11. Rfd1 cxd4
$5 12. exd4 Nxc3 13. Bxc3 Qc7 14. Rac1 dxc4 15. bxc4 {
White has the hanging pawns.} Rfe8 16. Bd2 $5 Rad8 17. Re1 Bf6 18. Be3 $2 ({
Better is} 18. Be4 $1 e5 19. Bxb7 Qxb7 20. Bc3 e4 21. Nd2) 18... e5 $1 19. dxe5
Nxe5 20. Nxe5 Bxe5 21. c5 $5 {Stahlberg tries a counteraction.} Bxh2+ 22. Kf1
$2 (22. Kh1 $1 {prevents an immediate decision.}) 22... Qc6 23. f3 Bg3 $5 24.
Be4 $6 (24. cxb6 Qf6 25. Bb5 {prolongs the game.}) 24... Rxe4 $1 25. fxe4 Bxe1
26. Kxe1 Qxe4 27. cxb6 axb6 28. Rc4 ({Or} 28. Bxb6 Qb4+ {(Euwe).}) 28... Qe6
29. Rd4 Rxd4 30. Bxd4 Qxe2+ 31. Kxe2 Bxg2 32. Bxb6 f6 33. a4 Kf7 34. a5 Bb7 35.
Ke3 g5 36. Bc7 Kg6 37. Bd6 h5 38. Be7 f5 39. Bd8 f4+ 40. Kf2 Kf5 {
Eliskases had defeated his main competitor.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "11"]
[White "Eliskases, Erich"]
[Black "Michel, Paul"]
[Result "1-0"]
[ECO "A49"]
[Annotator "JvR"]
[PlyCount "137"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 O-O 5. Bg2 d6 6. d4 Nbd7 7. O-O e5 8. dxe5
Ng4 9. Nbd2 Ngxe5 10. Nxe5 Nxe5 11. Qc1 d5 12. h3 $5 (12. Nf3 Nxf3+ 13. Bxf3 {
led to exchanges in Zita - Chekhover, Leningrad 1946.}) 12... Re8 13. Re1 Bf5
14. g4 Be6 15. f4 $5 Nc6 16. Bxg7 Kxg7 17. Qb2+ Qf6 18. Qxf6+ Kxf6 19. c3 Rad8
20. Rad1 Kg7 21. Nf3 f6 22. Kf2 Bf7 23. e3 Ne7 24. g5 Nc8 $5 25. gxf6+ Kxf6 26.
Ne5 c6 27. Rd2 Be6 28. Red1 Ke7 29. h4 Rf8 30. Bf3 Nd6 31. Rg1 Rg8 32. Rdd1 Bf5
33. c4 dxc4 34. bxc4 Ne4+ 35. Bxe4 Bxe4 36. Rd4 Bf5 $5 37. Kf3 $5 Rxd4 38. exd4
Kd6 39. a4 b6 40. Rg2 Kc7 {The chances in the endgame are about equal.} 41. h5
Rd8 $5 ({Preferable is} 41... Rg7 $1 42. Rh2 Be6) 42. Ke3 Re8 43. Kd2 a6 44.
hxg6 hxg6 45. Rh2 $1 Re7 46. Rh8 Rg7 47. Kc3 Be4 48. Rh4 Kd6 49. Rh8 Kc7 $1 50.
Rf8 $1 Rh7 $5 51. d5 $1 cxd5 52. Kd4 $1 Bc2 $6 ({Better is} 52... Bg2 $1 53.
cxd5 Rh1 54. Rf7+ Kc8) 53. cxd5 Bxa4 54. Nxg6 $5 Rh1 55. Rf7+ Kd8 $6 56. Ra7
Bc2 $2 57. Ne7 $2 (57. Ne5 $1 Rd1+ 58. Kc3 Be4 59. d6 $1 {ends the game.})
57... Ke8 58. d6 Kf7 $2 ({Correct is} 58... Rd1+ $1 59. Ke5 Re1+ 60. Kf6 Rd1 {
and Black escapes.}) 59. Nc8+ Kf6 60. Nxb6 Rd1+ 61. Kc5 Be4 62. Rxa6 Ke6 63. d7
Ke7 64. Ra3 Bf5 65. Re3+ Kf6 66. Nd5+ Rxd5+ 67. Kxd5 Bxd7 {
White has reached a theoretical win.} 68. Kd6 Bb5 69. Re6+ $1 {
Eliskases kept on scoring.} 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "11"]
[White "Medina Garcia, Antonio"]
[Black "Denker, Arnold"]
[Result "1-0"]
[ECO "B59"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nb3 h6 $2 8.
O-O a5 $6 {The pawn advances on the flank do not help the development.} 9. Be3
Be7 10. Nd2 d5 $1 11. exd5 Nxd5 12. Nxd5 Qxd5 13. Bc4 $1 Qd8 $6 ({Preferable is
} 13... Qd7 $1) 14. Qh5 g6 $6 (14... O-O $1 15. Bxh6 $1 Qd7 $1 {
leads to counter-play for a pawn.}) 15. Qf3 $1 Rh7 16. c3 h5 17. Qe2 Bf5 18.
Rad1 Qc7 19. Nf3 Bg4 $5 20. Bd5 $1 Kf8 21. Qb5 Ra6 $6 {
The counter on the queenside will not occur.} 22. Rd2 Bf6 23. Ng5 Bxg5 24. Bxg5
Kg7 25. Be3 f6 26. f4 exf4 27. Rxf4 Qe7 $6 ({Better is the retreat} 27... Ra8)
28. Re4 Ne5 29. Bd4 Kh6 30. Be3+ g5 31. h4 Bf5 32. hxg5+ fxg5 33. Bc5 Qd7 34.
Bf8+ Kg6 35. Qe2 Bg4 36. Rxg4 $1 Qxg4 37. Qxe5 Rd7 38. Qe8+ {
Medina humiliated Denker.} 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "11"]
[White "Najdorf, Miguel"]
[Black "Stahlberg, Gideon"]
[Result "1-0"]
[ECO "D47"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. Nc3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3
b4 9. Ne4 Be7 10. O-O O-O 11. Nxf6+ Nxf6 12. e4 c5 13. e5 $1 {
Najdorf delivers a fine novelty.} (13. dxc5 Nd7 14. Be3 Nxc5 {
drew in Carlsson - Stoltz, Stockholm 1938.}) 13... Nd5 $2 (13... Nd7 $1 14. Qc2
h6 {avoids a disaster (Dinstuhl - Fleck, Germany 2006).}) 14. Qc2 {
White attacks two pawns.} h6 15. Qe2 $1 (15. dxc5 $6 Bb7 16. c6 Rc8 {
encounters more resistance.}) 15... Bd7 $6 (15... f5 16. exf6 Nxf6 17. Rd1 Qc7
{avoids an immediate loss.}) 16. Bxh6 $1 c4 $5 ({The pointe is} 16... gxh6 $2
17. Qe4 f5 18. exf6 Nxf6 19. Qg6+ Kh8 20. Qxh6+ Kg8 21. Qg6+ Kh8 22. Ng5) 17.
Bb1 c3 18. Qe4 g6 19. Qg4 $1 Qe8 ({Or} 19... cxb2 $2 20. Bxg6 $1 bxa1=Q 21.
Bh7+ $1) 20. bxc3 Nxc3 21. Bc2 $5 {
Hereafter, White wins quietly by his material advantage.} Ba4 22. Bb3 a5 23. h4
Bxb3 24. axb3 Qb5 25. h5 Qd3 26. Bxf8 Kxf8 27. hxg6 Qxg6 28. Qxg6 fxg6 29. Rfe1
Bd8 30. Nd2 Nb5 31. Re4 Nc3 32. Rg4 Kg7 33. g3 Rb8 34. Kg2 Rc8 35. Ne4 Nd5 36.
Nc5 Rc6 37. Nb7 Be7 38. Rxa5 Rc2 39. Re4 g5 40. Nc5 Kf7 41. Ra6 Rb2 42. Nxe6
Rxb3 43. Nxg5+ Bxg5 44. e6+ Ke8 45. Ra8+ Ke7 46. Re5 {
Stahlberg resigned at last.} 1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "12"]
[White "Denker, Arnold"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "B18"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. f4 e6 8. Nf3
Nd7 $5 9. c3 Qc7 10. Ne5 Nxe5 11. fxe5 O-O-O $1 12. Qa4 $6 {
The queen moves offside.} ({Better is} 12. h5 Bh7 13. Bc4) 12... Kb8 13. h5 Bh7
14. Ne2 $6 (14. Be2 {develops a piece.}) 14... c5 $5 15. Be3 $5 Ne7 16. O-O-O
$2 (16. Rc1 Nd5 17. Bd2 {defends stubbornly.}) 16... Nd5 $1 17. Rh3 Be7 18. Nf4
$6 Nxe3 19. Rxe3 cxd4 20. Rxd4 Rxd4 21. Qxd4 Bc5 22. Qd2 Bxe3 23. Qxe3 {
Black has won an exchange.} Rd8 24. Bd3 Bxd3 25. Nxd3 Qc4 26. Ne1 Qxa2 27. Nc2
Qd5 28. Nd4 Qxg2 29. Qd3 Qg5+ 30. Kc2 Qf5 31. Qxf5 exf5 32. Nxf5 Rd5 33. Nxg7
Rxe5 34. Kd3 Kc7 {Denker showed little for his high appearance fee.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "12"]
[White "Stahlberg, Gideon"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "E17"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Qc2 c5 8. dxc5
bxc5 9. b3 Nc6 $5 10. Bb2 Nb4 11. Qc1 Ne4 $6 (11... d5 $1 {occupies the centre.
}) 12. Nc3 f5 13. Rd1 $1 Qc8 14. a3 Nc6 15. Nxe4 fxe4 16. Ng5 $1 Nd4 $6 (16...
Na5 $1 17. Qc3 Bf6 18. Qxa5 Bxg5 $1 {equalises.}) 17. Bxd4 cxd4 18. Nxe4 Rb8
19. b4 a5 20. b5 Bxe4 $6 (20... d6 $1 21. Rxd4 d5 $1 22. cxd5 exd5 {
offers a subtle resistance.}) 21. Bxe4 Qc5 22. Qb1 Kh8 $5 23. Qd3 Rf6 $2 {
Square f6 should remain open for the king's bishop.} ({Better is} 23... g6 24.
Rab1 Bf6) 24. Qxd4 Qxd4 25. Rxd4 Bc5 26. Rad1 $5 Rxf2 $5 (26... Bxd4 27. Rxd4
Rf7 {also favours White.}) 27. Kxf2 e5 28. e3 exd4 29. exd4 Bxa3 30. Ke3 g6 31.
Kd3 Kg7 32. Bd5 Be7 33. Ra1 Bd8 34. Kc3 h5 35. Kb3 h4 36. gxh4 Bxh4 37. Ka4 $5
Bf2 38. Rd1 Rh8 39. b6 Rxh2 40. Rd3 Bg1 41. b7 Rb2 42. Rd2 $1 Rb1 43. Be4 Ra1+
44. Kb3 {Szabo was a top player, but he had a difficult time in Mar del Plata.}
1-0

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "13"]
[White "O'Kelly de Galway, Alberic"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "B81"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. Bg2 a6 8. h4 g6
$5 (8... h5 9. g5 Ng4 {was played in O'Kelly - Stoltz, Groningen 1946.}) 9. g5
hxg5 10. hxg5 Rxh1+ 11. Bxh1 Nh7 $5 12. Qg4 $5 (12. f4 $1 e5 13. Nf3 {
gains an edge.}) 12... Bg7 13. Qh4 $5 ({Preferable is} 13. Nde2 $1 Nc6 14. Qh4)
13... Bxd4 14. Qxh7 Nd7 15. Bd2 Bxc3 16. Qg8+ Nf8 17. Bxc3 e5 $5 (17... Qxg5
18. Bg7 Qg1+ 19. Ke2 Qxa1 20. Qxf8+ Kd7 21. e5 $1 Qxh1 22. Qxd6+ Ke8 23. Qf8+ {
leads to perpetual check.}) 18. f4 $6 ({More solid is} 18. Bd2) 18... Bg4 19.
Qh8 $2 (19. Kd2 $1 exf4 20. Bg7 Qa5+ 21. c3 O-O-O 22. Kc2 {defends well.})
19... Qb6 $1 {A counteraction brings a quick win.} 20. Qh2 Qe3+ 21. Kf1 Bh3+
22. Bg2 Bxg2+ 23. Kxg2 $5 Qxe4+ 24. Kg1 Qxf4 25. Qxf4 exf4 26. Rd1 Ne6 27. Bf6
Rc8 28. Rxd6 Rxc2 29. Kf1 Rc6 30. Rd3 Rc7 31. Rd2 Rd7 32. Rh2 Rd5 $1 33. Rh7
Nc5 34. Rh8+ Kd7 35. Rb8 Ke6 36. b4 Ne4 37. Rxb7 f3 {
Stahlberg fought for the second place.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "15"]
[White "Bolbochan, Jacobo"]
[Black "Stahlberg, Gideon"]
[Result "0-1"]
[ECO "D44"]
[Annotator "JvR"]
[PlyCount "48"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5
9. Nxg5 hxg5 10. Bxg5 Nbd7 11. g3 Qa5 12. exf6 b4 13. Ne4 Ba6 {
Botvinnik made this line popular.} 14. Bg2 c3 15. b3 $5 ({Known is} 15. bxc3 $6
bxc3 {(Camara - Engels, Recife 1947).}) 15... O-O-O 16. Qc2 {
White has a hard defence.} c5 17. O-O-O cxd4 18. Rxd4 Bc5 19. Rd6 $2 {
White expects to make useful exchanges.} (19. Rdd1 $1 Ne5 20. Nxc5 Qxc5 21. Be3
Qa5 22. Be4 {resists stubbornly.}) 19... Bxd6 20. Nxd6+ Kc7 21. Nxf7 Qa3+ 22.
Kd1 Ne5+ $1 23. Nxd8 Rxd8+ 24. Ke1 Qb2 {Stahlberg had a winning streak.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "16"]
[White "Guimard, Carlos"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "A47"]
[Annotator "JvR"]
[PlyCount "120"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. c3 e6 6. O-O Be7 7. Bg5 O-O 8. Nbd2
cxd4 $5 9. cxd4 d5 10. Ne5 Nc6 11. Ndf3 Ne4 12. Bxe7 Qxe7 13. Qa4 Qb4 14. Qxb4
Nxb4 {The exchanges slightly favour Black.} 15. a3 $5 Nc2 $1 16. Rac1 Rac8 17.
Rfd1 f6 $5 18. Nd3 Rc4 19. e3 Rfc8 20. Rb1 $5 Nxa3 $2 21. bxa3 Nc3 22. Bh3 f5
$5 23. Ng5 $5 Nxb1 24. Rxb1 {White has gained a material advantage.} Rc3 25.
Nc5 $1 Ba8 26. Ngxe6 $4 (26. Ncxe6 {keeps both knights.}) 26... bxc5 27. Nxc5
g6 28. a4 Ra3 $5 29. Rb5 $5 Ra1+ 30. Bf1 $5 g5 $5 31. Kg2 f4 32. gxf4 gxf4 33.
exf4 Bc6 34. Ra5 Rc7 35. Bd3 Rg7+ 36. Kf3 Rh1 37. Bf5 Rxh2 38. Ra6 Be8 39. Rd6
Rgg2 40. Nd3 $6 ({Better is} 40. Be6+ $1 Kg7 41. Bxd5 Rxf2+ 42. Kg3) 40... Bxa4
41. Be6+ $6 Kf8 42. f5 Ke7 43. Ra6 ({The pointe is} 43. Rxd5 $4 Bc6) 43... Bb5
44. Rxa7+ Kd6 45. Nf4 Rxf2+ 46. Kg3 h5 47. Rb7 $2 (47. Ra8 $1 h4+ 48. Kg4 Rh1
49. Nxd5 {draws.}) 47... h4+ 48. Kg4 Bc6 49. Rh7 $2 (49. Rb6 $1 Rf1 50. Bxd5
Rxf4+ 51. Kxf4 Kxd5 52. f6 Be8 53. Rb7 {fights for the last chance.}) 49... Rh1
$1 50. Nh3 Rd2 51. Kxh4 Rxd4+ 52. Kg5 Re4 53. Rh6 d4 54. Bc4+ Kc5 55. f6 Bd7
56. f7 Rg4+ 57. Kf6 Kxc4 $1 58. f8=Q Rf1+ 59. Ke7 Re4+ 60. Re6 $5 Rxe6+ {
Guimard had a poor finish.} 0-1

[Event "Mar del Plata"]
[Site "11"]
[Date "1948.??.??"]
[Round "17"]
[White "Eliskases, Erich"]
[Black "De Freitas, Marcio"]
[Result "1-0"]
[ECO "A49"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1948.03.??"]
[SourceDate "1999.07.01"]

{Stahlberg had neared Eliskases by half-a-point, when the last round began.} 1.
Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. d4 Nbd7 7. O-O e5 8. dxe5
Ng4 9. e4 $5 ({Eliskases diverts from} 9. Nbd2) 9... Ngxe5 10. Nxe5 Nxe5 11.
Nc3 Bg4 12. f3 Bd7 13. Rb1 Rb8 $5 14. Qd2 Re8 $6 ({Preferable is} 14... f5 $1
15. exf5 Bxf5) 15. h3 $5 f6 $5 16. Kh2 Nf7 17. Nd5 c6 18. Ne3 Qe7 19. Rbe1 Rbd8
20. c4 $1 {White restraints the centre.} Bc8 21. Bd4 b6 22. a4 h5 $2 (22... Ne5
$1 23. Bc3 a5 24. Rd1 Bb7 {defends well.}) 23. a5 Qc7 24. axb6 axb6 25. f4 Nh6
26. Qb2 Rf8 27. b4 Bb7 28. b5 c5 29. Bc3 Rde8 30. Qd2 Ra8 31. Nd5 Qd8 32. Ra1
Kh7 33. Rxa8 Bxa8 34. Rd1 {White has been outplayed.} Bxd5 35. Qxd5 Nf7 36. Ra1
Qc7 $5 37. Ra6 $5 Rc8 38. h4 Nd8 39. Bh3 $1 Rb8 40. f5 gxf5 {Stahlberg lost.
Eliskases triumphed. The final standings became: Eliskases 13/17, Stahlberg
111/2, Medina 11, Najdorf and Rossetto 10, O'Kelly and Szabo 91/2, Maderna 9,
Pilnik 81/2, Jacobo Bolbochan, Luckis and Michel 8, Guimard 7, Castillo and De
Freitas 61/2, Denker and Sanguinetti 6, Olivera 5.} ({The pointe is} 40... gxf5
41. Bxf5+ Kh8 42. Bg6 {and pawn h5 falls.}) 1-0

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1948.??.??"]
[Round "?"]
[White "Guimard, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "D47"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1948.04.??"]
[SourceDate "1999.07.01"]

{Twelve men played the tournament Buenos Aires/La Plata 1949. The first round
started in the Jockey Club de la Plata on 27 iv 1948. Another race between
Najdorf and Stahlberg developed. The event ended on 11 v 1948.} 1. d4 d5 2. c4
e6 3. Nc3 c6 4. e3 Nf6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 b4 9. Nb1 Be7
10. O-O c5 11. Qe2 $5 ({Known is} 11. Nbd2) 11... O-O 12. Nbd2 Bb7 13. Nc4 Qc7
14. b3 cxd4 15. exd4 Nd5 16. Nfe5 Nc3 17. Qc2 Nf6 18. Be3 Qd8 19. a4 Qd5 20. f3
Qd8 21. Bf2 h6 22. Rfe1 Rc8 23. Qb2 Nfd5 24. Bf1 Re8 25. Nd3 Nf6 26. Nc5 Bd5
27. Ne5 Qb6 28. Ned3 a5 29. Nf4 Ba8 30. Bc4 Nfd5 31. Nfd3 Bd6 32. Ne4 Bb8 33.
Ne5 Qc7 34. Nc5 Qe7 35. Qc1 Nb6 36. Ba6 Rcd8 37. Bb5 Rf8 {
No dramatic events occurred during the long manoeuvres.} 38. Nc4 $6 {
The next exchange favours Black.} Nxc4 39. bxc4 $2 ({Better is} 39. Bxc4 Bd5
40. Bxd5 Rxd5 41. Ne4) 39... Qd6 40. h3 $2 {Guimard allows a quick finish.}
Qh2+ 41. Kf1 Bxf3 $1 {Najdorf strikes.} ({The pointe is} 41... Bxf3 42. gxf3
Qxh3+ 43. Kg1 Bh2+) 0-1

[Event "Buenos Aires/La Plata"]
[Site "?"]
[Date "1948.??.??"]
[Round "?"]
[White "Stahlberg, Gideon"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "E22"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1948.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. Qb3 c5 6. dxc5 Na6 $5 7. Bd2 Bxc5
8. g3 b6 9. Bg2 Bb7 10. O-O d5 11. cxd5 Nxd5 12. Rfd1 Qe7 13. Ne5 Rfd8 14. Nxd5
Bxd5 15. Bxd5 Rxd5 16. Bc3 Rad8 17. Nc6 Rxd1+ 18. Rxd1 Rxd1+ 19. Qxd1 Qe8 $1 {
The position is equal.} 20. Qa4 Nb4 $2 ({Correct is} 20... Nc7 21. Qg4 g6) 21.
Bxb4 Bxb4 22. Qb5 Qd7 23. Nxa7 $1 Qxa7 24. Qxb4 Qxa2 25. Qxb6 {
White has won a pawn.} Qb1+ 26. Kg2 Qe4+ 27. Kh3 $1 {
Black cannot deliver perpetual check.} f5 28. Qe3 Qd5 29. f3 Kf7 30. Qd3 Qb7
31. b3 g5 32. Qc4 h5 33. b4 g4+ 34. Kg2 Ke7 35. Qc5+ Kd7 36. Qd4+ $5 Kc6 37.
Qe5 Qd7 38. Qc5+ Kb7 39. b5 Qe8 40. Kf2 e5 41. Ke3 gxf3 42. Kxf3 Qe6 43. Kf2
Qe8 {The final standings were: Najdorf 9/11, Stahlberg 81/2, O'Kelly and
Michel 8, Guimard 61/2, Rossetto 6, Pilnik and Iliesco 51/2, Camara 4, Medina
31/2, Balado 1/9, Julio Bolbochan 1/2/5. Balado and Bolbochan withdrew during
the event.  It was Stahlberg's last Argentine tournament. He returned to
Sweden after a decade and remained in Europe. The rivals Gideon and Miguel
played the interzonal during the summer. They just qualified for the next
stage.} 1-0

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "1"]
[White "Pomar Salamanca, Arturo"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "C10"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

{The twelfth tournament in Mar del Plata happened from 14 iii until 5 iv 1949.
Special guests, among the eighteen participants, were Arturo Pomar and Edward
Lasker. Najdorf, Pilnik and Julio Bolbochan were absent. Gambling
organisations sponsored again. The event was played in the casino.} 1. e4 e6 2.
d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Be7 6. Bd3 Ngf6 7. Qe2 Nxe4 8. Bxe4 c5 9.
c3 Nf6 10. Bc2 cxd4 11. Nxd4 O-O $5 ({Known is} 11... Bd7) 12. Bf4 Bd7 13. O-O
Re8 $5 14. Be5 Qb6 15. f4 $5 ({Preferable is} 15. Rfe1 $1 Rac8 16. a4 a5 17.
Rad1) 15... g6 16. Kh1 Rac8 (16... Qxb2 $6 17. Rfb1 Qxc3 $6 18. Nxe6 $1 Qc6 19.
Nc7 {favours White.}) 17. Bb3 a5 18. Nf3 $6 {White should not retreat.} a4 $1
19. Bd4 Qa6 20. Qxa6 bxa6 21. Bc2 Bb5 22. Rfe1 $2 {
White is going to lose material.} ({Correct is} 22. Rf2 $1 Nd5 23. Ne5) 22...
Nd5 $1 23. g3 $6 (23. f5 $1 exf5 24. Rad1 a3 25. Bb3 Bc6 26. Bxd5 Bxd5 27. b3 {
brings compensation for the pawn.}) 23... a3 $1 24. Rab1 axb2 25. a4 $5 Bc6 26.
Kg1 $2 Nxc3 27. Ne5 Nxb1 28. Rxb1 Bxa4 29. Bxa4 Rc1+ 30. Kg2 Rxb1 31. Bxe8 Rg1+
32. Bxg1 b1=Q 33. Bxf7+ Kf8 34. Bxe6 Qe4+ 35. Kh3 Qh1 36. Bd4 Qf1+ 37. Kg4 h5#
{Pomar had a hard time in Mar del Plata.} 0-1

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "2"]
[White "Michel, Paul"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]
[ECO "C12"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4
g6 9. Bc1 c5 10. Bd3 Nxc3 $5 (10... cxd4 11. Ne2 Qa5 {
was played in Boleslavsky - Lisitsin, Moscow 1944.}) 11. dxc5 Qa5 12. Bd2 Qa4
$1 13. Qf3 $1 {An immediate exchange of queens favours Black.} Ne4 14. Bxe4
Qxe4+ $6 ({Better is} 14... dxe4 $1 15. Qb3 Qa6 {(Fier - Cubas, Santos 2006).})
15. Qxe4 dxe4 16. Ne2 $1 {White threatens to conquer e4.} Bd7 $1 17. Rb1 Bc6
18. Nd4 Na6 $6 (18... e3 $1 19. Bxe3 Bxg2 20. Rg1 Bd5 {almost equalises.}) 19.
Nxc6 bxc6 20. Be3 O-O-O 21. Rb3 $1 Rd5 $1 22. c4 Rd3 $2 {
Capture of e5 costs an exchange.} ({Correct is} 22... Rd7 $1 23. Ke2 Rhd8 $1
24. Rhb1 Rd3 $1) 23. Rxd3 exd3 24. Kd2 Kc7 ({Or} 24... Rd8 25. Kc3 h5 26. Rd1 {
and pawn d3 falls.}) 25. Rb1 Rb8 $5 (25... Rd8 26. Rb3 {also costs a pawn.})
26. Rxb8 Kxb8 27. Bxh6 Nxc5 28. Be3 Nd7 29. f4 Kb7 30. Kxd3 c5 31. h4 Kc6 32.
g4 Nf8 33. h5 Nh7 34. Bf2 g5 35. fxg5 Nxg5 36. Bh4 Nh7 37. Be7 {
Michel played adventurous chess.} 1-0

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "6"]
[White "Benko, Francisco"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "B72"]
[Annotator "JvR"]
[PlyCount "108"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nc6 7. Be2 Bg7 8. Nb3
a5 9. a4 O-O 10. Be3 Be6 11. Nd4 Nxd4 $5 12. Bxd4 Qc8 $5 13. O-O Bc4 14. Rf2
Re8 15. Qf1 Bxe2 16. Rxe2 Nd7 17. Bxg7 Kxg7 18. Rd2 Qc5+ 19. Qf2 Qxf2+ 20. Kxf2
Nc5 21. e5 dxe5 22. fxe5 Rac8 23. Rad1 Rc6 24. Rd8 Rxd8 25. Rxd8 b6 {
The chances after the exchanges are equal.} 26. Ke3 Na6 27. Rd2 $2 {
The white rook becomes passive.} (27. Rd7 $1 Nb4 28. Kd2 Kf8 29. Rd8+ Kg7 30.
Rd7 {leads to a repetition of moves.}) 27... Nb4 $1 {
Black has activates his knight.} 28. Kd4 Rc5 29. Ke4 e6 30. Kf4 $5 h6 31. h4
g5+ $1 32. hxg5 hxg5+ $6 (32... Rc4+ $1 33. Kg3 hxg5 {keeps more advantage.})
33. Kxg5 Rxe5+ 34. Kf4 Re1 35. Rd6 $6 (35. Nb5 $1 Rc1 36. Nd4 {
consolidates the white position.}) 35... Rc1 $1 36. Rxb6 Rxc2 37. Rb5 Rxg2 $5
38. Rxa5 Rxb2 {Black has won a pawn.} 39. Rg5+ Kf6 $5 40. Ne4+ $2 (40. Rb5 $1
Nd3+ 41. Ke4 Rxb5 42. axb5 Nc5+ 43. Kd4 Nd7 44. Ne4+ Ke7 45. Nd2 f6 46. Nc4 {
leads to a drawn knight ending.}) 40... Ke7 41. Ra5 Nd5+ 42. Ke5 f6+ $1 43. Kd4
Rb4+ 44. Kd3 Kf7 45. Nc5 $6 (45. Nd6+ $1 Kg6 46. Nc4 f5 47. Ra6 Kg5 $1 48. a5
$1 {fights for the last chance.}) 45... e5 $1 {
The connected pawns will advance by the support of the black pieces.} 46. Ra7+
Kg6 47. a5 Rd4+ 48. Ke2 Rc4 49. Nd7 e4 $1 50. Nf8+ Kf5 51. Rd7 Rc2+ 52. Ke1 Nf4
53. a6 e3 54. a7 Ra2 {Eliskases played a clever endgame.} 0-1

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "8"]
[White "Roux Cabral, Luis"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "A85"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 f5 2. d4 Nf6 3. c4 e6 4. Bg5 Be7 5. Nc3 d5 6. c5 $5 O-O 7. e3 c6 8. b4
Nbd7 9. Bf4 $5 Ne4 10. Nxe4 fxe4 11. Ne5 Bh4 $5 12. g3 $6 ({Preferable is} 12.
Nxd7 Bxd7 13. Be2 $1) 12... Nxe5 13. Bxe5 Bf6 14. Bd6 $1 Re8 15. Bg2 e5 $1 {
Black takes the initiative.} 16. dxe5 Bxe5 17. Bxe5 Rxe5 18. Qd4 Qe7 19. O-O
Bg4 $1 20. a4 Rf8 21. b5 h5 22. bxc6 bxc6 23. Rab1 Ref5 24. Rb2 h4 25. Rfb1 Qg5
26. a5 R5f6 27. a6 Qf5 28. Qd2 Bh3 29. Qe2 Bxg2 30. Kxg2 Qg5 $6 (30... d4 $1
31. exd4 Qd5 32. Kg1 Rxf2 33. Qxf2 Rxf2 34. Rxf2 e3 {continues the attack.})
31. Rb8 Rxb8 32. Rxb8+ Kh7 33. Rb7 Rf3 $5 34. Rxa7 $2 {White should defend.} ({
Correct is} 34. Qb2 Rf5 35. Qe2 $1 hxg3 36. hxg3) 34... Qh5 35. Qb2 $6 ({
The alternative is} 35. Kh1 $5 d4 $1 36. exd4 e3 37. fxe3 hxg3 38. Kg1 Qh3 $1
39. Qxf3 gxh2+ {and Black wins.}) 35... h3+ $1 36. Kf1 Rf7 $1 {
Eliskases delivers mate or gains a rook.} 0-1

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "10"]
[White "Rossetto, Hector"]
[Black "Pomar Salamanca, Arturo"]
[Result "1-0"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. Bd3 Nbd7 5. O-O e6 6. Nbd2 Bd6 7. Qe2 $5 Qc7 8.
e4 $1 dxe4 9. Nxe4 Nxe4 10. Qxe4 Nf6 11. Qh4 {White has the initiative.} b6 12.
a4 $5 Bb7 13. a5 c5 14. axb6 axb6 15. Bb5+ $6 ({Better is} 15. Bh6 $1 c4 16.
Be2 Rg8 17. Rxa8+ Bxa8 18. Ra1 Bb7 19. Bxg7 Rxg7 20. Qxf6 {
and White has an edge.}) 15... Ke7 $1 16. Rxa8 Rxa8 17. dxc5 Qxc5 {
Pomar has equalised.} 18. Bd3 Bxf3 19. gxf3 g5 $5 20. Qh6 ({The alternative is
} 20. Bxg5 $5 Rg8 21. f4 Bxf4 22. Qxf4 Rxg5+ 23. Kh1 Qc6+ 24. f3) 20... Qd5 $5
21. Bxg5 Qxf3 22. Re1 Ra4 $4 ({Correct is} 22... Bc5 23. Qxf6+ Qxf6 24. Bxf6+
Kxf6 25. Bxh7 Rh8 26. Be4 Bd6) 23. Be4 $1 Qg4+ ({A pointe is} 23... Rxe4 24.
Qxf6+ Qxf6 25. Bxf6+ Kxf6 26. Rxe4) 24. Kf1 Be5 25. f3 $1 {
Rossetto catches a queen.} Rxe4 26. fxg4 {Pomar lost again.} 1-0

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "14"]
[White "Rossetto, Hector"]
[Black "Luckis, Marcos"]
[Result "1-0"]
[ECO "C33"]
[Annotator "JvR"]
[PlyCount "23"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. f4 exf4 3. Qf3 {Rossetto plays a rare line of the King's Gambit.}
d5 4. exd5 Nf6 5. Bb5+ c6 6. dxc6 bxc6 7. d4 $5 ({Known is} 7. Ne2 {
(Reti - Illa, Buenos Aires 1924).}) 7... g5 $5 8. Nc3 Qb6 $6 (8... Bb4 $1 9.
Nge2 Bg4 10. Bxc6+ Kf8 $1 11. Bxa8 Bxf3 12. Bxf3 Kg7 {
leads to a spectacular game.}) 9. Qe2+ Be7 $6 (9... Kd8 $1 10. Bc4 Bb4 {
brings a great fight.}) 10. Bc4 $1 O-O $4 ({Better is} 10... Bg4 $1 11. Nf3
Bxf3 12. gxf3 Qxd4 13. Bd2 Nbd7 14. O-O-O $1 {
but White has the attack for a pawn.}) 11. Qxe7 Qxd4 12. Nge2 {
Rossetto led one-and-a-half points on Eliskases and Guimard.} (12. Nge2 Qxc4
13. Qxf6 {gains a piece.}) 1-0

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "15"]
[White "Lasker, Edward"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "C06"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 b6 7. Qe2 Nc6 $5 8.
Ndf3 $5 cxd4 9. Bb5 $5 Qc7 10. Nxd4 $6 {White sacrifices.} ({
More solid are the exchanges by} 10. Bxc6 Qxc6 11. Nxd4 Qc4 12. Qxc4 dxc4)
10... Ncxe5 $1 {Black grabs the pawn.} 11. f4 Nc4 12. Ngf3 Be7 13. O-O a6 $5
14. Ba4 $5 (14. Bc6 $1 Bb7 15. Bxb7 Qxb7 {equalises.}) 14... b5 15. Bc2 Nf6 16.
a4 b4 17. b3 Na5 18. f5 $5 {
Lasker strives for the initiative, but he will not achieve it.} e5 $5 19. Nxe5
O-O 20. Nd3 $6 ({Preferable is} 20. cxb4 Bxb4 21. Nef3) 20... bxc3 21. Bf4 Bd6
22. Qf2 Nc6 $5 23. Rad1 $5 Bb7 24. Nc5 $6 {White should exchange.} Ng4 $1 25.
Qg3 $2 {He blunders a piece.} (25. Bxd6 Qxd6 26. Qf4 Qxc5 27. Qxg4 {
offers more resistance.}) 25... Nxd4 $1 26. Qxg4 Bxf4 27. Nxb7 Be3+ 28. Kh1
Nxc2 29. f6 g6 30. Qe2 Qxb7 31. Qxc2 d4 {
Edward Lasker also had a hard time in Mar del Plata.} 0-1

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "16"]
[White "Letelier Martner, Rene"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "C04"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 Be7 7. Bb5 a6 8. Bxc6
bxc6 9. O-O c5 10. c4 $5 ({Letelier diverts from} 10. Na5 Nb8 11. dxc5 Bxc5)
10... dxc4 11. Na5 Nb6 $6 ({A fine alternative is} 11... O-O $1 12. Nc6 Qe8)
12. Nc6 Qd7 13. Nxe7 Qxe7 14. Bg5 Qd7 $6 {Black has a crammed position.} ({
Preferable is} 14... f6 $1 15. exf6 gxf6) 15. dxc5 Nd5 16. Rc1 h6 17. Bh4 g5 $6
(17... Qb5 18. Qd4 Rb8 19. Rc2 O-O {develops in the right way.}) 18. Bg3 a5 $5
19. Nd2 $1 h5 20. h4 $1 gxh4 $6 {The black game deteriorates.} 21. Bxh4 Rg8 22.
Rxc4 $5 {It looks like White blunders.} Ba6 $5 23. c6 $1 Qc8 24. Qxh5 Bxc4 25.
Qh7 $1 {But his play has a nice pointe.} Rf8 26. Nxc4 Ra6 27. Rd1 Rxc6 28. Ne3
$5 Qb7 $6 (28... Rc5 $5 29. Qe4 Rh8 30. Qg4 Qb7 31. Qg5 Kd7 32. Qf6 $1 {
brings a strong white attack.}) 29. Qg7 Qxb2 30. Qg5 f6 31. Qg6+ Rf7 32. exf6
Qb4 33. Nxd5 exd5 34. Rb1 $1 Rc1+ 35. Rxc1 Qxh4 36. Qg8+ {The top became at
the end of the penultimate round: Rossetto 13, Eliskases 12 and Guimard 11.}
1-0

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "17"]
[White "Czerniak, Moshe"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "B70"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 g6 7. Bg2 Bd7 8. O-O
Bg7 9. h3 $5 O-O 10. Nb3 $5 ({More solid is} 10. Nxc6 Bxc6 11. Be3) 10... Ne5
$1 11. Qe2 Qc8 12. f4 Nc4 13. Kh2 Re8 14. Nd2 $5 Be6 15. Re1 Nxd2 16. Bxd2 Nd7
17. Qf3 Qc6 18. Qf2 $5 Qb6 19. Qxb6 Nxb6 20. f5 $5 Bd7 $5 21. fxg6 hxg6 22. Nd5
Nxd5 $5 23. exd5 Rac8 24. c3 Be5 25. Re3 Kg7 26. Rf1 Rh8 $1 27. Ref3 $6 ({
Better is} 27. Re4 Bf5 28. Ra4 a6 29. Bf4) 27... f6 28. Bf4 $6 Rh5 $6 (28... g5
$1 29. Bxe5 dxe5 30. Re3 Rh6 31. Rh1 Bxh3 $1 {wins for Black.}) 29. Bxe5 dxe5
30. d6 $6 Rch8 $2 (30... Bg4 $1 31. R3f2 Bxh3 $1 32. Bxh3 Rch8 33. Kg2 Rxh3 34.
dxe7 Rh2+ 35. Kf3 Kf7 {decides the game.}) 31. dxe7 $1 Bxh3 $2 {
Rossetto expects to triumph.} ({Correct is} 31... f5) 32. e8=N+ $3 {
The tables turn by a forced underpromotion, a theme from endgame studies.} ({
Not} 32. e8=Q $2 Bxg2+ 33. Kxg2 Rh2+ 34. Kg1 Rh1+ 35. Kf2 Rxf1+ $1 36. Kxf1
Rxe8 {and Black wins the rook ending.}) 32... Rxe8 ({Or} 32... Kf7 33. Nxf6 $1
Bxg2+ 34. Kxg2 Rh2+ 35. Kg1 Rh1+ 36. Kf2 R8h2+ 37. Ke3) 33. Bxh3 f5 34. Kg2 e4
35. Re3 Reh8 36. g4 fxg4 37. Bxg4 Rh2+ 38. Kg3 Rxb2 39. a4 Rhh2 40. Rxe4 Rhg2+
41. Kf4 Rb6 42. Kg5 Rc6 43. Re7+ Kg8 44. Rd1 {
Czerniak was a brilliant fighter. He defeated the leader.} 1-0

[Event "Mar del Plata"]
[Site "12"]
[Date "1949.??.??"]
[Round "17"]
[White "Guimard, Carlos"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "E68"]
[Annotator "JvR"]
[PlyCount "123"]
[EventDate "1949.03.??"]
[SourceDate "1999.07.01"]

{The second place is at stake in this game.} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4.
e4 d6 5. g3 O-O 6. Bg2 e5 7. Nge2 Nbd7 8. O-O exd4 9. Nxd4 Re8 10. b3 Nc5 11.
f3 c6 12. Ba3 $5 ({An improvement will become} 12. Be3 $1 {
(Euwe - Van Scheltinga, Amsterdam 1950).}) 12... Qa5 $1 13. Bb2 Qb6 14. Kh1
Nfd7 15. Rb1 Ne5 16. Ba1 a5 17. h3 $5 Qc7 18. Nce2 a4 19. b4 Ncd7 20. Qc2 Nb6
21. Qc3 a3 22. c5 dxc5 23. bxc5 Na4 24. Qxa3 Bf8 25. f4 Nd7 26. f5 Ndxc5 27.
Qe3 Nb6 $6 {The knight has no sufficient protection on b6.} 28. fxg6 hxg6 29.
Nb5 $1 cxb5 30. Qc3 $1 {White threatens Qh8#.} Re5 $2 {
Black does not has to sacrifice an exchange.} ({Better is} 30... f6 $1 31. Rxf6
Qh7 32. Nf4 Bg7 33. Qxc5 Bxf6 34. Bxf6 Nd7 35. Qd5+ Qf7 {
and White has a positional edge.}) 31. Qxe5 Qxe5 32. Bxe5 Nc4 33. Bf4 Bd7 34.
Rbd1 $6 Bc6 $5 35. Nd4 Bxe4 36. Bxe4 Nxe4 37. Nxb5 Rxa2 38. Rd4 $2 (38. Ra1 $1
Rb2 39. Rfb1 {keeps an advantage.}) 38... Ned2 $2 ({The sacrifice} 38... Ne3 $1
39. Bxe3 Nxg3+ 40. Kg1 Ne2+ 41. Kh1 Ng3+ {leads to perpetual check.}) 39. Bxd2
Nxd2 40. Rf2 Bh6 {White is going to win the endgame.} 41. Rd8+ Kg7 42. Kg2 f5
43. Re2 f4 44. gxf4 Bxf4 45. Nd4 Kf7 46. Rd7+ Kf6 47. Nf3 Nxf3 48. Rxa2 Ne5 49.
Rxb7 g5 50. Rf2 Kf5 51. Rb8 Nd3 52. Rb5+ Ke4 53. Re2+ Kd4 54. Ra5 Ne5 55. Ra4+
Kd5 56. Ree4 Ng6 57. Rad4+ Kc5 58. Rd1 Bd6 59. Re8 Kc6 60. Kf3 Nf4 61. Kg4 Kd7
62. Re3 {Guimard shared the second and third prize.  The final standings were:
Rossetto 13/17, Eliskases and Guimard 12, Czerniak 111/2, Luckis 10, Jacobo
Bolbochan, Flores, Letelier Martner and Michel 91/2, Iliesco 9, Cruz, Lasker
and Martin 71/2, Maderna 61/2, Benko and Pomar 5, Roux Cabral 41/2, Corte 4.}
1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "1"]
[White "De Freitas, Marcio"]
[Black "Trifunovic, Petar"]
[Result "0-1"]
[ECO "A54"]
[Annotator "JvR"]
[PlyCount "126"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

{The thirteenth tournament in Mar del Plata occurred from 9 iii until 1 iv
1950. Eighteen men played in the Casino. The Yugoslavian participants,
Gligoric, Pirc and Trifunovic, met Julio Bolbochan, Guimard, Rossetto and
Pilnik before their confrontation in Dubrovnik 1950. A special guest was
Rossolimo from France. Najdorf stayed in Europe.} 1. d4 d6 2. c4 e5 3. Nf3 Nd7
4. Nc3 Ngf6 5. g3 c6 6. dxe5 dxe5 7. Bg2 Be7 8. O-O O-O 9. Qc2 Qc7 10. h3 $5
Re8 {They play a quiet game.} 11. Be3 Bc5 12. Ng5 h6 13. Nge4 Nxe4 14. Nxe4 Be7
$5 15. c5 Nf6 16. Nxf6+ Bxf6 17. Bd2 Be7 18. e4 $5 Be6 19. b4 Red8 20. Bc3 Rd7
21. Rfd1 $6 ({Preferable is} 21. f4 $1 f6 22. fxe5 fxe5 23. Kh2) 21... Rxd1+
22. Qxd1 $5 f6 23. Qc1 b6 24. Qe3 $5 Rd8 $5 25. Bf1 Bf8 26. Rc1 $6 bxc5 27.
bxc5 Qf7 $6 {Pawn a2 could be captured.} 28. Ba5 Rb8 29. a4 Qd7 30. Kh2 Be7 31.
Re1 Rb7 32. Rc1 Kh7 33. Be1 Rb2 34. Qc3 Qb7 35. Bc4 Bxc4 36. Qxc4 Qb3 37. Qxb3
Rxb3 {Black has an edge in the endgame.} 38. Rc4 Kg8 39. Kg2 Kf7 40. Ba5 Ke6
41. g4 Rb2 42. Bb4 g6 43. Ba3 Rb3 44. Bc1 h5 45. Be3 f5 $5 46. gxf5+ $2 (46.
exf5+ $1 gxf5 47. gxh5 f4 48. Bc1 Kd5 49. Rc2 Bxc5 50. Rb2 Rxb2 51. Bxb2 {
fights ingeniously.}) 46... gxf5 47. exf5+ Kxf5 48. Kf3 a6 49. Kg2 $5 Ke6 50.
Kf3 Kd5 $1 51. Rc1 Ra3 52. Rd1+ Ke6 53. Rg1 Rxa4 {He has won a pawn.} 54. Rg6+
$2 ({The active} 54. Rg8 $1 a5 55. Re8 Kd7 56. Rh8 Rc4 57. Rxh5 a4 58. Rxe5 a3
59. Bg5 $1 Bxc5 60. Re2 {gives survival chances.}) 54... Kd5 $1 55. Rh6 h4 56.
Rh8 Bxc5 57. Rd8+ Bd6 58. Bg5 Ke6 59. Rh8 a5 60. Rh6+ Kd5 61. Bxh4 Rf4+ 62. Ke2
a4 63. Rh8 a3 {Trifunovic increased his advantage in the endgame until it was
sufficient for a win.} 0-1

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "2"]
[White "Castillo, Manuel"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "B10"]
[Annotator "JvR"]
[PlyCount "140"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Bb5+ Nbd7 6. Nc3 g6 7. Nf3 Bg7 8.
d6 exd6 9. O-O O-O 10. d4 h6 11. Bf4 Nb6 12. Qd2 Kh7 $5 (12... a6 {
was played in Alekhine - Feigins, Kemeri 1937.}) 13. h3 Be6 14. Bh2 Nbd5 15.
Rfe1 Rc8 16. Bd3 Nxc3 $1 17. bxc3 Bd5 18. Re3 Re8 19. Rae1 Qd7 20. Nh4 $6 {
The knight becomes inactive.} Bc4 21. Rxe8 Nxe8 22. Bb1 $5 Nf6 23. g4 $6 {
White will be vulnerable on the long diagonal a8-h1.} Kg8 24. Bg3 Re8 25. Rxe8+
Qxe8 $1 {Black gives a pawn temporarily.} 26. Bxd6 Ne4 27. Bxe4 Qxe4 28. f3 $5
(28. a3 Bd5 29. f3 Qe6 30. Bg3 Qa6 {also conquers pawn a3.}) 28... Qb1+ 29. Kf2
Qxa2 30. Qxa2 Bxa2 {
Eliskases has the two bishops and a passed pawn in the endgame.} 31. Ke3 Bf8 $5
(31... a5 $1 32. Ng2 Bf8 $1 33. Bxf8 Kxf8 {gains a big advantage.}) 32. Bc7 Be7
$5 33. Ng2 Kf8 34. Kd3 Bd5 $1 35. Ke3 Ke8 36. Nf4 Bc4 37. Nd3 b5 38. Ne5 Bd5
39. Ba5 g5 $5 40. Nd3 Bd8 $1 {This move is made at last.} 41. Bb4 $5 ({
The exchange by} 41. Bxd8 Kxd8 42. Nb4 Bb7 43. Nc2 a5 {also favours Black.})
41... a5 42. Ba3 Be7 43. Nc5 f6 44. Kf2 (44. Ne4 $5 Kd7 $1 45. Bxe7 Kxe7 46.
Nd2 f5 $1 47. Kd3 a4 48. Kc2 a3 {wins for Black.}) 44... Kf7 45. Ke3 Bd6 46.
Kf2 Kg6 47. Ke3 f5 $1 48. Ke2 h5 {Black threatens 49...fxg4 50.fxg4 Bg2.} 49.
gxf5+ Kxf5 50. Bc1 Bf4 51. Bb2 Bg3 52. Ke3 h4 53. Ba3 Bf4+ 54. Ke2 Bc4+ 55. Kf2
Bg3+ 56. Kg2 Be1 57. Bb2 b4 58. cxb4 Bxb4 59. Bc1 $5 Bd5 $6 {
Black misses the direct decision.} (59... Bb5 $1 60. Ne4 Bc6 $1 61. Nxg5 Bd5 {
leads to a winning advance of the a-pawn.}) 60. Kf2 Bc6 61. Ke3 $6 {
White misses the best defence.} (61. Nd3 $1 Bd6 62. Kg2 $1 Bb5 63. Nc5 Bf4 64.
Ba3 {The a-pawn is stopped.} Bc4 65. Nb7 $5 ({or} 65. Kf2 Bg3+ 66. Kg2 Be1 67.
Ne4 Bd5 68. Nd6+ Ke6 69. Ne4 Bb4 $1 70. Bb2 Bc6 $1) 65... Bd5 $1 66. Nc5 Be3
67. Bb2 Bc6 68. Bc3 a4 69. Bb2 Bd2 70. d5 $1 Bxd5 $1 71. Nxa4 Kf4 {
will win for Black eventually.}) 61... a4 $1 62. Nd3 Bd6 $1 63. Ne5 Bd5 64. Bb2
a3 65. Bc3 a2 66. Kf2 Bxe5 67. dxe5 Be6 68. Ke3 Kg6 69. f4 gxf4+ 70. Kxf4 Bxh3
{Eliskases has two distant passed pawns. He won a fine ending.} 0-1

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "3"]
[White "Rossolimo, Nicolas"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "C04"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 Be7 7. Bf4 $5 ({
Theory is} 7. Bb5 $1) 7... b6 8. c3 Na5 $6 9. Nxa5 bxa5 10. Bd3 c5 11. O-O Qb6
12. Bg5 Ba6 $6 ({Preferable is} 12... Bxg5 $1 13. Nxg5 h6 14. Qh5 O-O 15. Bh7+
Kh8 16. Bd3 Kg8 17. Bh7+ {and a repetition of moves.}) 13. Bxe7 Kxe7 14. Bxa6
Qxa6 15. Qd2 Rhc8 16. Rac1 cxd4 17. cxd4 h6 18. Rc2 Nb6 19. Rfc1 Rxc2 20. Rxc2
Rc8 21. Rxc8 Nxc8 22. g3 Nb6 23. Qc3 Nd7 24. Nd2 $1 Qb5 $2 (24... a4 $1 {
stops the knight.}) 25. Nb3 $1 a4 26. Na5 Qb6 27. Kg2 f6 28. Qa3+ Ke8 29. exf6
gxf6 30. Qxa4 Qxb2 31. Nc6 $1 Qe2 $6 (31... Qb7 32. Nxa7 Kf7 33. Nb5 Qc6 {
offers more resistance.}) 32. Qb4 $1 Qe4+ 33. Kg1 $1 Qh7 34. Qb7 Nf8 35. Qc8+
Kf7 36. Qc7+ Kg8 37. Qxh7+ Nxh7 38. Nxa7 {
White has reached a won knight ending.} Ng5 39. Nb5 $5 Kf7 $5 40. a4 Ke7 41. a5
Kd7 42. a6 Kc6 43. f4 Nf7 44. Kf2 Nd8 45. Kf3 f5 46. Kg2 $1 Kb6 47. a7 Kb7 48.
Kh3 Nc6 49. Kh4 Nxa7 50. Nxa7 {
Rossolimo entered the hostile position with a queen and knight.} 1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "4"]
[White "Pilnik, Herman"]
[Black "Czerniak, Moshe"]
[Result "1/2-1/2"]
[ECO "E61"]
[Annotator "JvR"]
[PlyCount "382"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. Bf4 c5 $5 ({Theory is} 5... d6) 6.
e3 d6 7. Be2 Qb6 8. Qd2 Bf5 9. O-O Ne4 10. Qc1 $5 Nxc3 11. bxc3 Nc6 12. Bg3 Na5
13. d5 e5 14. Nd2 Rae8 15. e4 Bc8 16. Nb3 Nxb3 17. axb3 Qxb3 $6 18. Qd2 Qb6 19.
Rfb1 Qd8 20. Rxa7 f5 21. exf5 gxf5 22. f4 e4 23. Bh5 Re7 24. Bh4 Bf6 25. Bxf6
Rxf6 26. Ra8 Rf8 27. Qe3 Rg7 28. Be2 Qh4 29. g3 Qe7 30. Kf2 Qc7 31. Qc1 Qe7 32.
Rba1 Qc7 33. Ke3 Rg6 34. R1a2 Kh8 35. Rb2 Rfg8 36. Qe1 Qg7 37. Kd2 h5 $1 {
Black takes the initiative.} 38. Qf2 h4 39. Rb1 Qh6 40. Rg1 Qf8 41. Qe3 Qe7 42.
Bh5 R6g7 43. Be2 Qf7 44. Raa1 b5 $5 45. gxh4 $6 bxc4 46. Rg5 Qxd5+ 47. Ke1 Be6
48. Ra6 Rh7 49. Qg3 Rb8 50. Ra1 Qb7 51. Rg6 $2 Qe7 $2 {
He could have shortened the game.} (51... Bf7 $1 52. Rxd6 e3 $1 53. Rad1 Qh1+
54. Bf1 Re8 55. Rd8 e2 $1 {wins for Black.}) 52. Ra6 e3 53. Qxe3 Qxh4+ 54. Qg3
Qxg3+ 55. Rxg3 Rxh2 56. Rxd6 {Black has an extra pawn of little importance.}
Rb1+ 57. Rd1 Rb6 $5 ({The reported} 57... Rb3 {
seems a mistake in the notation to me.}) 58. Rg5 Rb2 59. Rh5+ Rxh5 60. Bxh5 Kg7
61. Rd6 Kf6 62. Be2 Ke7 63. Rd2 Rb3 64. Rc2 Rb1+ 65. Kd2 Rh1 66. Ra2 Rh4 67.
Ra7+ Kf6 68. Ke3 Rh3+ 69. Kd2 Bd5 70. Rc7 Ke6 71. Rxc5 Kd6 72. Ra5 Rg3 73. Ra6+
Kc5 74. Rf6 Be4 75. Rf8 Rg2 76. Rc8+ Kb5 $5 77. Ke3 Bd3 78. Bh5 Ka4 79. Rb8 Rg7
80. Be8+ Ka3 81. Bc6 Be4 82. Bb5 Rc7 $5 83. Kd4 $1 {
The initiative goes to White.} Bd3 84. Rb6 Rc8 85. Bc6 Rc7 86. Bd5 $1 Rc8 87.
Rb4 Rd8 88. Ke5 Rc8 89. Be6 Rc6 90. Bd7 Rh6 91. Be6 Rh3 92. Bxc4 Bc2 $1 93. Bd5
Rxc3 {Material equality has been restored.} 94. Rb6 Rc8 95. Bc6 Rd8 96. Bd5 Rc8
97. Rb7 Rc3 98. Rb8 Re3+ 99. Kf6 Rc3 100. Rb6 Rh3 101. Rb8 Re3 102. Rc8 Kb2
103. Rh8 Rc3 104. Rh2 Ka3 105. Be6 Rc5 106. Rh5 Rc6 107. Rh8 Kb4 108. Re8 Kc3
109. Kg5 $1 Kd4 110. Bxf5 {He has won a pawn.} Rc5 111. Rf8 Ba4 112. Kg4 Ke3
113. Kg3 Rc1 114. Bg4 Bc6 115. Kh4 Rc5 116. f5 Kf4 117. Rc8 Rc1 118. Bh3 Rc4
119. f6 Bd5 120. Rd8 Rd4 $6 121. Rd7 $1 Ke5+ 122. Kg5 Rb4 123. Re7+ Kd6 124.
Kg6 Rb3 125. Bg4 Rb4 126. Bf5 Rb2 127. Kg7 Rg2+ 128. Bg6 Be6 129. Ra7 $1 Bc4
130. Ra4 Bb3 131. Ra3 Bc4 132. Rc3 Bd5 133. Re3 Rg1 134. Rd3 Ke5 135. Re3+ Kd6
136. Ra3 Bc4 137. Ra4 Bd5 138. Ra6+ Ke5 139. Ra5 Kd6 140. f7 $5 Bxf7 141. Kxf7
{White has practical chances.} Rf1+ 142. Bf5 Rf2 143. Kf6 Rf1 144. Ra2 Re1 145.
Rd2+ Kc5 146. Be6 Rf1+ 147. Ke7 Re1 148. Rc2+ Kd4 149. Kd6 Kd3 150. Bf5+ Ke3
151. Ke5 Kf3+ 152. Kf6 Re8 153. Be6 Ke4 154. Rc4+ Kd3 155. Rh4 Rd8 156. Ke5 Kc3
157. Rc4+ Kd3 158. Ra4 Re8 159. Ra3+ Ke2 160. Kf5 Kd2 161. Rh3 Re7 162. Kf6 Re8
163. Ke5 Ke2 164. Kd5 Kf2 165. Bf5 Re3 166. Rh8 Re7 167. Kd4 Kf3 168. Rf8 Kg3
169. Be4 Ra7 170. Ke3 Ra3+ 171. Bd3 Rb3 172. Rg8+ Kh3 {
The black king has been driven to the border.} 173. Ke4 Kh2 174. Be2 Rg3 175.
Bg4 Ra3 176. Bf3 Ra4+ 177. Ke3 Rb4 178. Be4 Rb6 179. Kf4 Rf6+ $1 {
Czerniak pays attention.} (179... Rb3 $2 180. Rg7 Ra3 181. Rg2+ Kh3 182. Rg1 {
brings a theoretical win.}) 180. Bf5 Rf7 181. Rg5 Ra7 182. Rh5+ Kg2 183. Be4+
Kf2 184. Rh2+ Kg1 185. Rg2+ Kf1 186. Rd2 Kg1 $1 187. Kf3 Ra3+ $1 188. Bd3 Ra8
$1 189. Rg2+ Kh1 190. Be4 Rf8+ 191. Ke2 Re8 $1 {It is drawn by the
50-moves-rule. They had been playing for 23 hours. The number of moves was a
record in tournament chess. Pilnik would produce a draw of 150 moves in the
last round.} 1/2-1/2

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "5"]
[White "Sanguinetti, Renato"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "C71"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c4 Bd7 6. d4 Nxd4 7. Bxd7+ Qxd7 8.
Nxd4 exd4 9. Qxd4 Ne7 10. O-O Nc6 11. Qc3 f6 $5 {Black develops slowly.} (11...
Qg4 12. f3 Qg6 {occurred in Eliskases - Thomas, Hastings 1936.}) 12. Be3 Be7
13. Nd2 O-O 14. Rad1 f5 $1 15. c5 $5 Qe6 16. cxd6 Bxd6 17. Qc4 Rae8 18. exf5
Rxf5 19. Rfe1 $6 {The immediate exchange is preferable.} Qxc4 20. Nxc4 Bb4 $1
21. Bd2 Rxe1+ 22. Bxe1 Rc5 $1 {Black takes the initiative in the endgame.} 23.
b3 $6 (23. Ne3 $1 Bxe1 24. Rxe1 Nb4 25. a3 Nd3 26. Rb1 {brings the white rook
in a passive position, but his king will liberate him soon.}) 23... b5 24. Ne3
Bxe1 25. Rxe1 Nb4 26. Ra1 {
A freeing action for the white rook will become problematic.} Kf7 27. Kf1 Nc2
$1 28. Rd1 (28. Nxc2 $5 Rxc2 29. a4 $6 b4 $1 {also favours Black.}) 28... Nxe3+
29. fxe3 Rc2 30. b4 $6 (30. Rd7+ $1 Kf6 31. b4 $1 Rxa2 32. Rxc7 {
activates the white rook.}) 30... Ke6 $1 31. a4 Rc4 32. axb5 axb5 33. Rb1 Ke5
34. Ke2 Ke4 35. Kd2 g5 36. Rb2 h5 37. Rb1 $5 h4 $5 38. h3 $2 (38. Rb3 $1 Rc6
39. Ra3 g4 40. Ra8 Rc4 41. Rg8 Kf5 42. Rf8+ Ke5 43. Rh8 Rxb4 44. Rxh4 Rb2+ 45.
Kd3 Rxg2 46. Rh5+ {leads to an escape in the rook ending.}) 38... Rc6 $1 39.
Rb2 ({The alternative is} 39. Rb3 Ra6 $1 40. Ke2 Ra2+ 41. Kf1 Rd2) 39... Rd6+
40. Ke2 Rd3 41. Rc2 {Guimard recovered from his previous defeat.} (41. Rc2
Rxe3+ 42. Kf2 Rb3 43. Rxc7 Rb2+ 44. Kg1 Rxb4 {
wins for Black, although the rook stands before the passed pawn.}) 0-1

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "6"]
[White "Bolbochan, Julio"]
[Black "Sanguinetti, Renato"]
[Result "1-0"]
[ECO "E01"]
[Annotator "JvR"]
[PlyCount "69"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 b6 5. Nc3 Bb7 6. cxd5 exd5 7. Bg5 Be7 8. Qb3
$5 (8. Bxf6 Bxf6 9. Nh3 {was played in Van Bardeleben - Fritz, Breslau 1889.})
8... Ne4 $5 9. Bxe7 Qxe7 10. Nf3 c6 $5 11. Ne5 $5 Nd6 12. O-O O-O 13. Rfe1 f6
$6 14. Nd3 $1 {White pressures on the centre.} Qf7 15. a4 $6 (15. e4 $1 dxe4
16. Qxf7+ Kxf7 17. Nxe4 Rd8 18. Nxd6+ Rxd6 19. Re4 {preserves an edge.}) 15...
Nd7 16. Qb4 Nc4 17. a5 Rab8 $2 {
Black fails to stop the attack on the queenside.} (17... Nb8 $1 18. axb6 Na6 $1
19. Qb3 axb6 {equalises.}) 18. axb6 a5 $5 19. Qa4 Ndxb6 20. Qc2 Ra8 21. Nc5 f5
22. N3a4 Nxa4 23. Rxa4 Ba6 $5 24. b3 Nd6 25. Rxa5 {White grabs a pawn.} Bb5 (
25... Bd3 $5 26. Nxd3 $1 Rxa5 27. Qxc6 Ne4 28. b4 {also favours White.}) 26.
Rxa8 Rxa8 27. e3 Qa7 (27... Ne4) 28. Bf1 Qa5 $5 29. Rc1 $1 Rc8 30. Bxb5 cxb5
31. Qd1 $1 Ra8 $2 (31... Qa7 {offers more resistance.}) 32. Qf3 $1 Qa3 33.
Qxd5+ Kh8 34. Rc2 Ne4 35. Nxe4 {Julio Bolbochan attacked well.} 1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "8"]
[White "Gligoric, Svetozar"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "E69"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. e4
exd4 9. Nxd4 Nc5 10. h3 c6 11. Be3 Re8 12. Qc2 Qe7 13. Rae1 $5 a5 14. Nb3 Na6
$5 15. a3 $5 Nc7 16. Nd4 Ne6 17. Nf3 $5 Nc7 18. Nd2 Be6 {
So far, the players have made hesitant moves.} 19. f4 $1 d5 $2 (19... b5 {
counters on the queenside.}) 20. cxd5 cxd5 21. e5 $1 {
Gligoric attacks in the centre.} Nd7 22. g4 $1 f5 23. exf6 $5 (23. gxf5 $1 Bxf5
24. Qb3 Be6 25. Nxd5 {grabs a pawn.}) 23... Bxf6 24. Nf3 Qg7 25. g5 Bxc3 26.
bxc3 Bf5 27. Qd2 Be4 $6 28. Bd4 $6 (28. Nh2 $1 {
lets a knight invade the kingside.}) 28... Qf7 $6 29. c4 $1 dxc4 30. Ba1 $1
Bxf3 31. Qc3 $5 {He threatens mate in one.} Kf8 $1 32. Bxf3 Ne6 $6 33. Bd5 Ndc5
34. f5 $1 gxf5 35. Qh8+ Ke7 36. Qe5 Kd7 ({The pointe is} 36... Kf8 37. Rxf5)
37. Rxf5 Qe7 38. Bxc4 Kc8 39. Bxe6+ Nxe6 40. Rc1+ Kd8 41. Qd5+ {
Gligoric led in the tournament.} 1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "9"]
[White "Czerniak, Moshe"]
[Black "Luckis, Marcos"]
[Result "1-0"]
[ECO "D01"]
[Annotator "JvR"]
[PlyCount "109"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Bf5 4. f3 {Czerniak plays a rare attacking opening.}
c6 5. Qd2 Nbd7 6. O-O-O h6 7. Bh4 $5 g5 $5 8. Bf2 h5 $6 {
The kingside becomes vulnerable.} 9. Re1 ({Not} 9. Qxg5 $4 Bh6) 9... e6 10. e4
$1 Bg6 11. Bd3 Qa5 $2 {Black blunders.} ({Better is} 11... dxe4 12. Nxe4 Nxe4
13. fxe4 Qb6) 12. exd5 Bxd3 $5 13. dxe6 $1 Bc4 $5 14. exd7+ Kxd7 {
White has won a pawn.} 15. Ne4 $6 {It will be hard for White to win a won game.
} (15. d5 $1 Bxd5 16. Bd4 $1 {wins at once.}) 15... Qxd2+ 16. Kxd2 Nd5 17. b3
Ba6 18. c3 b6 $5 19. Ne2 $1 Be7 20. c4 Nc7 21. N2g3 Bb4+ 22. Nc3 b5 23. a3 $5
Bxa3 24. Ra1 Bb4 25. Kd3 Bc8 26. Nge4 bxc4+ $6 27. bxc4 Ne6 28. Be3 Nf4+ 29.
Bxf4 gxf4 30. Ne2 f5 31. Nf2 c5 32. d5 a5 33. Nxf4 Kd6 34. Nd1 Bd7 35. Nc3 a4
36. Rhe1 Rh6 37. Re2 a3 38. Nb1 Ba4 $2 39. Nxa3 Bxa3 40. Rea2 $1 {
Black missed this point.} Ke5 41. Ne6 Rxe6 42. Re2+ $5 Kf4 43. g3+ $2 Kxf3 44.
Rf1+ Kg4 45. Rf4+ Kg5 46. Rxe6 h4 $1 47. Rxh4 Rb8 48. Rhh6 Kg4 $2 (48... Rb3+
$1 49. Ke2 Rb2+ {offers more resistance.}) 49. Rb6 $1 Rxb6 50. Rxb6 Bc1 51. Ra6
Be8 52. Ra8 Bg6 53. Rg8 Kh5 54. d6 f4+ 55. Rxg6 $1 {Czerniak came from
Palestine in 1939, left Argentina in 1950 and settled in the new state of
Israel.} 1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "10"]
[White "Gligoric, Svetozar"]
[Black "Martin, Pedro"]
[Result "1-0"]
[ECO "E25"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 Nxd5 8.
dxc5 Qa5 9. e4 {They play an interesting line of the Nimzo-Indian Defence.} Nf6
$5 ({Known is} 9... Ne7) 10. Be3 Qxc3+ $6 ({Theory will become} 10... O-O $5
11. Qb3 Nfd7 {(Szabo - Fuderer, Zagreb 1964).}) 11. Kf2 $1 O-O 12. Ne2 Qa5 13.
Qd2 Qxd2 14. Bxd2 {White has a positional advantage by his bishops.} Nc6 $2 ({
Better is} 14... Nfd7 $1 15. Rc1 b6 16. Be3 Bb7 {
and Black fights back on the queenside.}) 15. Be3 Rd8 16. Nc3 Bd7 17. Be2 Ne5
18. Rhd1 Bc6 19. Nb5 $1 Bxb5 20. Bxb5 h6 21. Bf4 Ned7 $6 (21... Nc6 $1 {
offers more resistance.}) 22. Bd6 $1 a6 23. Be2 $2 (23. Ba4 $1 Rdc8 24. Rdc1 {
continues the restriction of the queenside.}) 23... Rac8 24. Rdc1 Rc6 25. a4 $5
Rdc8 $1 26. Rab1 Nxc5 27. Bxc5 Rxc5 28. Rxc5 Rxc5 29. Rxb7 Ra5 {
Black has almost equalised.} 30. Bd1 Kf8 31. Ke3 Ke8 32. Ra7 Nd7 33. Kd4 e5+ $2
(33... Ne5 $1 34. Ra8+ Ke7 35. f4 Nd7 36. Ra7 g5 {
carries out a stubborn defence.}) 34. Kc3 Rc5+ 35. Kb4 a5+ $6 (35... Rc1 36.
Bb3 Rb1 $1 {protects pawn a6 indirectly.}) 36. Rxa5 Rc1 37. Rd5 Kd8 38. a5 Kc7
39. Ba4 Nb8 40. Rxe5 Rb1+ 41. Kc3 {The leader scored well.} 1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "13"]
[White "Rossetto, Hector"]
[Black "Maderna, Carlos"]
[Result "1-0"]
[ECO "D19"]
[Annotator "JvR"]
[PlyCount "121"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O
O-O 9. Qe2 Bg4 10. Rd1 Nbd7 11. h3 Bxf3 12. Qxf3 e5 13. d5 Bxc3 14. dxc6 e4 15.
Qf5 Qa5 $2 {Maderna misses the right solution.} (15... Be5 $1 16. cxd7 Qc7 {
drew in Reshevsky - Smyslov, Moscow 1948.}) 16. Qxa5 Bxa5 17. cxd7 {
White has a threatening extra pawn.} Rfd8 18. b4 $1 Bc7 $5 ({The alternative is
} 18... Bxb4 19. Rb1 a5 20. Bb5 Kf8 21. Bb2 Ke7 22. Bxf6+ $1 Kxf6 23. g4 $1)
19. Bb2 Nxd7 20. Bd5 $5 Nf6 21. Bxf6 gxf6 22. Bxe4 Bd6 (22... Rxd1+ $5 23. Rxd1
Rd8 24. Rxd8+ Bxd8 25. Bxb7 {nets two extra pawns for White.}) 23. b5 Rab8 24.
Rd5 Be5 25. Rad1 Rxd5 26. Rxd5 Re8 27. Kf1 Re7 28. Ke2 b6 29. Kd3 h6 30. f4 Bb2
31. g4 Rc7 32. Rd8+ Kg7 33. Bc6 Re7 34. Kd2 Ba3 35. e4 Bb4+ 36. Kd3 Ba3 37. Ke3
Bc1+ 38. Kf3 Ba3 39. h4 Bb4 40. Rd4 Bc5 41. Rd5 Bb4 42. g5 $5 fxg5 43. hxg5 Rc7
$5 44. gxh6+ Kxh6 45. e5 Kg7 46. f5 f6 47. e6 $1 Kf8 48. Rd4 Bc5 49. Rd3 Ke7
50. Ke4 Bb4 51. Kd5 Kf8 52. Kc4 Be7 53. Rd7 Rxd7 54. Bxd7 Ba3 55. Kd5 Ke7 56.
Kc6 Kd8 57. Kb7 Bb4 58. Kxa7 Kc7 59. Be8 Ba5 60. Bh5 $1 {White threatens e7.}
Bb4 61. a5 $1 {Rossetto creates two passed pawns.} 1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "14"]
[White "Maderna, Carlos"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "E17"]
[Annotator "JvR"]
[PlyCount "176"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. d4 e6 2. c4 Nf6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. Qc2 b6 7. cxd5 exd5 8. O-O
Bb7 9. Bf4 $5 c6 10. Ne5 Nfd7 11. Nd3 Bf6 12. Be3 Re8 13. Nc3 Nf8 14. Nf4 Ne6
15. Rad1 Nd7 16. Nxe6 fxe6 17. f4 b5 18. Bf2 b4 19. Na4 Ba6 20. Rfe1 Bb5 21. e4
g6 22. Nc5 Nxc5 23. dxc5 Qa5 24. e5 Bg7 25. b3 Qc7 26. Bd4 a5 27. Bh3 a4 28.
Ra1 axb3 29. axb3 Ra3 $5 30. Bb2 Qa5 $6 31. Qd2 $6 {
He should accept the sacrifice.} (31. Bxa3 bxa3 32. Qa2 Bf8 33. Rec1 $1 {
favours White.}) 31... Ra2 32. Qe3 Bf8 33. Bd4 Ra3 34. Kh1 Qa6 35. Qd2 Bd3 36.
Qxb4 Be4+ 37. Bg2 Rxa1 38. Bxa1 Bxg2+ 39. Kxg2 Qa2+ 40. Kh3 Qc2 41. Qa4 $2 ({
Better is} 41. Bd4 Ra8 42. Rf1 $1) 41... Qxc5 42. Bd4 $5 Qc2 43. Be3 Rd8 44.
Qa7 $5 Qf5+ 45. Kg2 Qe4+ 46. Kh3 d4 $1 47. Bf2 Qd5 48. Qb7 d3 49. Ra1 Qd7 $2 (
49... Rd7 $1 50. Qc8 d2 {wins for Black.}) 50. Qb6 $6 (50. Qxd7 Rxd7 51. Rd1 d2
52. Kg2 $1 Rd3 53. Kf1 {leads to exchange of the d- and b-pawns and equality.})
50... Qc8 51. Be3 Rd7 52. Rd1 Rd5 53. b4 Qd7 54. Bc5 $2 (54. Bd2 {
stops the passed pawn.}) 54... Bxc5 55. bxc5 d2 56. Qb8+ Kg7 57. Qb4 Rd4 58.
Qa5 Kh6 59. Qc3 Rd3 60. Qc4 Rd4 61. Qc3 Qd5 62. Qe3 Rd3 63. Qe2 {
White suffers from restraint.} Kg7 64. Qg4 Qd7 65. Qg5 Qf7 $1 66. Kg2 h6 67.
Qh4 Rd4 68. Kg1 g5 69. Qg4 Qd7 70. Qf3 Rd3 71. Qe4 Rd4 72. Qe2 Rd3 73. Qg4 $5 {
Desperation.} ({Or} 73. Qe4 Rd4 74. Qg2 gxf4 75. gxf4+ Kf7 $1 76. Qf3 Qd5 77.
Qxd5 Rxd5 {and Black wins the rook ending.}) 73... Qd4+ 74. Kg2 Qd5+ 75. Kh3
Rd4 76. Qh5 gxf4 77. Qh4 $5 Qd8 $5 78. Qg4+ Qg5 79. Qxe6 f3 80. g4 h5 81. Qf6+
Qxf6 82. exf6+ Kxf6 83. gxh5 Kg5 84. Kg3 Rd3 85. Kf2 Kxh5 86. Kg3 Kg5 87. h3
Kf5 88. h4 Ke4 {Guimard showed his positional expertise. Gligoric led one
point on Guimard and Rossetto.} 0-1

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "15"]
[White "Pilnik, Herman"]
[Black "Trifunovic, Petar"]
[Result "1-0"]
[ECO "C18"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. h4 Qa5 $5 (
7... Nbc6 8. h5 Qa5 9. Bd2 Qa4 {drew in Pilnik - Olivera, Mar del Plata 1948.})
8. Bd2 Nbc6 9. a4 Bd7 10. h5 Qc7 11. Nf3 f6 $6 {
Black allows a charge on the kingside.} ({Better is} 11... h6 $1 12. Bd3 O-O-O
{(Lank - Petric, Slovakia 2004).}) 12. h6 $1 fxe5 13. hxg7 Rg8 14. Rxh7 O-O-O
$6 (14... exd4 15. cxd4 cxd4 16. c3 dxc3 17. Bxc3 e5 {counters in the centre.})
15. dxc5 Nf5 16. Ng5 $5 e4 $2 (16... Rxg7 17. Rxg7 Nxg7 18. Nf7 Rf8 19. Nd6+
Kb8 {defends well.}) 17. Qc1 $1 Rxg7 18. Rxg7 Nxg7 19. Nf7 Rg8 20. Nd6+ Kb8 21.
Rb1 Bc8 22. Ba6 Na5 23. Bf4 $1 Nh5 24. Bxb7 $2 (24. Be5 $1 Ka8 25. Qh6 {
ends the game.}) 24... Bxb7 25. Nxb7 Nxf4 26. Nd6+ Ka8 27. Qxf4 Qxc5 28. Nb5
Rc8 29. Qf7 a6 $6 (29... Nb7 $1 30. Kf1 a6 31. Nd4 Nd8 {offers more resistance.
}) 30. Qxe6 Rc6 31. Qe8+ Rc8 32. Qe6 Rc6 33. Qd7 axb5 34. Qd8+ Ka7 35. Qxa5+
Ra6 36. Qxb5 Qxb5 37. Rxb5 Rxa4 38. Rxd5 Ra1+ 39. Kd2 Rg1 40. g3 Kb6 41. Re5
Rf1 {The solid Trifunovic encountered three defeats in Mar del Plata.} 1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "15"]
[White "Rossetto, Hector"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "D93"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

{If Rossetto wins, he will share the lead.} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3
Bg7 5. Bf4 O-O 6. e3 c5 7. dxc5 Qa5 8. Qa4 Qxc5 9. Qb5 Qxb5 10. Nxb5 Na6 11.
Rd1 Be6 12. Nfd4 Bd7 13. Be5 Rfd8 $5 {Gligoric diverts from a historical game.}
(13... Rfc8 $5 {was played in Levenfish - Botvinnik, Moscow 1937 (11).}) 14.
Be2 $6 (14. Nc3 $1 dxc4 15. Bxc4 {keeps the equality.}) 14... dxc4 15. Bxc4 Nc5
$6 (15... Rac8 $1 16. Na3 Nb4 {takes the initiative.}) 16. O-O Na4 17. Nf3 a6
$5 18. Nc7 Rac8 19. b3 $5 Nb6 20. Nd5 $2 ({Better is} 20. Rd4 $1 Nxc4 21. Rxc4)
20... Nfxd5 21. Bxd5 Bb5 $1 {Black wins an exchange.} 22. Bxb7 Bxf1 23. Rxd8+
$5 ({Or} 23. Rxf1 Rc2 $1) 23... Rxd8 24. Kxf1 Bxe5 $5 25. Nxe5 a5 26. Nc6 Rd1+
27. Ke2 Rb1 $1 {
He will capture a pawn on the queenside and threaten the other one.} 28. Nxa5
Rb2+ 29. Kf3 Rxa2 30. Nc6 Kf8 31. b4 Nc4 $1 32. b5 Nd6 33. Ba6 Rb2 34. Na7 {
White has saved the b-pawn, but he defends the kingside poorly.} f5 $1 35. h3
e5 36. g4 Ne4 37. gxf5 gxf5 38. Kg2 Rxf2+ 39. Kg1 Rb2 40. Nc6 f4 41. Nxe5 fxe3
42. b6 Nc5 43. Bc4 Kg7 44. Ng4 e2 {Gligoric increased his lead.} 0-1

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "16"]
[White "Luckis, Marcos"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "A43"]
[Annotator "JvR"]
[PlyCount "110"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. d4 c5 2. d5 g6 3. g3 d6 4. Bg2 Bg7 5. Nf3 e5 6. Nc3 Ne7 7. e4 $5 (7. O-O O-O
8. Nd2 {happened in Jacobo Bolbochan - Grau, Buenos Aires 1936.}) 7... Nd7 8.
Be3 Nf6 9. h3 b5 $1 10. Nd2 ({The pointe is} 10. Nxb5 $2 Qa5+ $1 11. Nc3 Nxe4)
10... Bd7 11. a4 b4 12. Ne2 O-O 13. Nc4 Ne8 14. f4 $5 exf4 15. Bxf4 (15. gxf4
$2 Nc8 16. c3 Nb6 {leads to a black counter.}) 15... Bc8 16. Ra2 Ba6 17. Ne3 $6
(17. b3 {protects the central area.}) 17... Nf6 $5 18. g4 Qb8 19. Bg5 $5 Qe8 $5
20. e5 $1 {White wants to force a decision.} Nd7 $1 (20... dxe5 $4 21. O-O $1
Nd7 22. d6 {wins for White.}) 21. e6 Ne5 22. O-O Rb8 23. Rf2 Nc8 24. Nf4 $5 {
He sacrifices a piece.} f6 25. Bh4 g5 26. Nh5 gxh4 27. Nf5 {
A great position compensates the bishop.} Rb7 28. Ra1 $5 Qg6 29. Nxh4 Qg5 30.
Nf5 Kh8 31. Be4 Bh6 32. h4 $2 {Black gets a pawn and will exchange.} (32. Rg2
$1 Ng6 $1 33. Qe1 Nf4 34. h4 Nxg2 35. hxg5 Nxe1 36. gxh6 Nxc2 37. Bxc2 {
continues a great battle.}) 32... Qxg4+ 33. Qxg4 Nxg4 34. Rg2 Be3+ $1 35. Kh1
Nf2+ 36. Kh2 Nxe4 37. Nxe3 Ne7 38. Rag1 f5 39. Nf4 Nf6 40. Rg7 Nfxd5 $1 41. Rf7
$5 ({The pointe is} 41. Nfxd5 $2 Nxd5 42. Rxb7 Bxb7 43. Nxd5 Bxd5) 41... Rg8 $1
{He returns a piece for additional exchanges.} 42. Nexd5 Nxd5 43. Nxd5 Rxg1 44.
Kxg1 Rxf7 45. exf7 Kg7 46. Nf6 h6 47. Ng8 Kxf7 48. Nxh6+ Kg6 49. Ng8 Bb7 {
Black has an extra pawn and imprisons the knight.} 50. Kf2 a5 51. Ke3 Kf7 52.
Nh6+ Ke6 53. Kf4 Be4 54. c3 d5 55. h5 d4 {Rossetto restarted winning games.}
0-1

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "17"]
[White "Bolbochan, Julio"]
[Black "Gligoric, Svetozar"]
[Result "1-0"]
[ECO "C08"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

{Gligoric led by one-and-a-half point on Guimard and Rossetto, when the last
round began.} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Bd7 6. Qe2+ Qe7
7. Bxd7+ Nxd7 8. dxc5 Nxc5 9. Nb3 Qxe2+ 10. Nxe2 Nxb3 11. axb3 Bc5 12. Bd2 Ne7
13. Bc3 Nc6 14. O-O $5 (14. O-O-O Bxf2 15. Bxg7 Rg8 16. Bh6 Rxg2 17. Rxd5 {
drew in Euwe - Botvinnik, Moscow 1948.}) 14... d4 15. Bd2 O-O 16. Nf4 Rac8 17.
Nd3 Bb6 18. Rfe1 Rfe8 19. Rxe8+ Rxe8 20. Kf1 f6 21. Re1 Rxe1+ 22. Kxe1 {
The players continue in a drawn ending.} Kf7 23. Ke2 g6 24. h3 f5 25. Ne1 Ke6
26. Nf3 Bd8 27. Bg5 Bc7 28. Bh6 Kd5 29. g3 Bd8 30. Bf8 Bf6 31. Kd3 b5 32. b4 a6
33. b3 h5 34. h4 Be5 35. Bc5 Bg7 36. Nxd4 Bxd4 37. c4+ bxc4+ 38. bxc4+ Ke6 39.
Bxd4 Nxb4+ 40. Kc3 Nc6 {Little is going on.} 41. Be3 Ke5 42. f3 Ke6 43. f4 Kd6
44. Bc1 Nb8 $5 (44... Ke6 {draws easily.}) 45. Ba3+ Kc6 46. Kd4 Nd7 47. Bb4 {
Black cannot stop the white king.} Nf6 48. Ke5 Ne4 49. Ke6 Nxg3 50. Kf6 Kd7 $2
{He misses the fine defence.} ({Right is} 50... Ne2 $1 51. Kxg6 Nxf4+ 52. Kxf5
a5 $1 53. Bxa5 Ng2 54. Kg5 Nxh4 55. Kxh4 Kc5 {and Black captures the last pawn.
}) 51. Kxg6 Ke6 52. Be1 Ne2 53. Kg5 {It is zugzwang.} Nc1 54. Kxh5 Nd3 55. Bd2
Nb2 56. Kg6 $1 Nxc4 57. h5 $1 {Gligoric won the tournament but lost one game.}
({The pointe is} 57. h5 Nxd2 58. h6 Nc4 59. h7 {and Black misses one tempo.})
1-0

[Event "Mar del Plata"]
[Site "13"]
[Date "1950.??.??"]
[Round "17"]
[White "Pirc, Vasja"]
[Black "Rossolimo, Nicolas"]
[Result "1-0"]
[ECO "E68"]
[Annotator "JvR"]
[PlyCount "145"]
[EventDate "1950.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nbd7 7. Nc3 e5 8. e4
Re8 9. d5 Nc5 10. Ne1 a5 11. h3 Nfd7 $5 ({Usual was} 11... Rf8) 12. Be3 f5 13.
exf5 gxf5 14. Nd3 Nxd3 15. Qxd3 Rf8 $5 16. f4 $5 e4 $1 17. Qd2 Nc5 18. Bd4 Rf7
19. Kh2 Bd7 20. Rg1 {White wants to prepare a kingside attack.} Qf8 21. Bf1
Bxd4 22. Qxd4 Qh6 23. Nd1 Rg7 24. Ne3 $1 Kf7 25. Be2 Rag8 {
Black has plans on the kingside too.} 26. Raf1 Rf8 $5 27. b3 Kg8 28. Qc3 b6 29.
a3 Be8 $2 {He overestimates his chances.} (29... Qf6 {
strives for the exchange of queens and equality.}) 30. b4 $5 axb4 31. axb4 Nd7
$5 32. g4 $1 {White attacks on all fronts.} fxg4 33. Bxg4 Qf6 34. Qxf6 Nxf6 35.
Nf5 $1 Nxg4+ 36. hxg4 $1 {The exchanges have strengthened the white position.}
Rd7 37. Nd4 Re7 $5 (37... Bf7 38. Ne6 $1 Bxe6 39. dxe6 Re7 40. f5 {
wins for White.}) 38. Ne6 Rff7 39. Re1 Rxe6 $5 {
He delivers a desperate sacrifice, because he has been outplayed.} 40. dxe6
Rxf4 41. Rgf1 Rxf1 42. Rxf1 e3 43. e7 e2 44. Re1 b5 45. c5 dxc5 46. bxc5 Kf7
47. Rxe2 b4 48. Kg3 b3 49. Re3 b2 50. Rb3 Kxe7 51. Rxb2 Kd7 52. Re2 Bg6 53. Kf4
Kc6 54. Re5 Kb5 55. Kg5 Bc2 56. Kf6 Bb1 57. g5 Bd3 58. Re3 Bg6 59. Rc3 Kc6 60.
Ke5 Bb1 61. Kd4 Bg6 62. Rf3 Bb1 63. Rf1 Bg6 64. Kc4 Bc2 65. Rf6+ Kb7 66. Kd4
Bb1 67. Rf1 Bg6 68. Kd5 Bc2 69. Rf3 Bd1 70. Rh3 Bc2 71. Rh2 Bb3+ 72. Kd4 Bg8
73. Rh6 $1 {Black resigned at last.  The final standings became: Gligoric 111/
2/17, Guimard and Rossetto 11, Julio Bolbochan and Pirc 101/2, Eliskases and
Pilnik 10, Rossolimo 91/2, Czerniak, Michel and Trifunovic 9, Martin 81/2,
Maderna 7, Marini 61/2, Castillo and De Freitas 51/2, Luckis 41/2, Sanguinetti
4. Gligoric was the first outsider, who won in Mar del Plata. Later, the
Yugoslavs won before the Argentines in Dubrovnik 1950.} 1-0

[Event "Mar del Plata/Buenos Aires"]
[Site "14 (zt)"]
[Date "1951.??.??"]
[Round "6"]
[White "Maderna, Carlos"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "E03"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1951.03.??"]
[SourceDate "1999.07.01"]

{The fourteenth tournament in Mar del Plata was a zonal event for South
America. The vent was finished in Buenos Aires. 23 participants from Argentina,
Brasil, Chile, Peru and Uruguay played from 16 iii until 19 iv 1951. Three
places in the interzonal tournament were at stake.} 1. d4 Nf6 2. c4 e6 3. g3 d5
4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 b5 8. Bg2 Bb7 9. a4 {
Castling would be safe.} c5 10. axb5 axb5 11. Rxa8 Qxa8 12. Nbd2 $5 cxd4 $1 {
Black has an advantage.} 13. Qd3 Bc5 14. Qxb5 O-O 15. O-O Bd5 16. Ne1 Bxg2 17.
Nxg2 e5 {He occupies the centre.} 18. Nf3 Qd5 19. Nfe1 $5 Rb8 20. Qa4 e4 $1 21.
Nf4 Qf5 22. h4 $5 {White can do little.} h6 $1 23. Kg2 g5 $6 ({Preferable is} 
23... Ne5 $1) 24. hxg5 hxg5 25. Nh3 g4 26. Nf4 Nb6 $5 27. Qb5 Qc8 28. Rh1 Nbd5
29. Qc4 Qf5 30. Rh6 $2 (30. b3 $1 Rd8 31. Nxd5 Nxd5 32. Rf1 {prolongs the game.
}) 30... Rc8 31. Nxd5 $6 Nxd5 32. Qa6 d3 33. f4 gxf3+ 34. exf3 exf3+ 35. Nxf3
Re8 {The attack in the centre has been directed on the king.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "14 (zt)"]
[Date "1951.??.??"]
[Round "15"]
[White "De Souza Mendes, Joao"]
[Black "Maderna, Carlos"]
[Result "0-1"]
[ECO "C86"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1951.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Be7 7. O-O O-O 8. a4
Rb8 9. axb5 axb5 10. Nc3 d6 11. Nd5 $5 (11. Nxb5 Bg4 12. Qc4 {
grabbed a pawn in Jacobsen - Skifters, Copenhagen 1922.}) 11... Nxd5 12. exd5
$5 Nd4 13. Nxd4 exd4 14. Qd3 $5 {
White blocks the development of his queen's bishop.} Bf6 15. c3 g6 $5 16. cxd4
$5 {He has a triple pawn in the centre.} Re8 17. Ra7 $6 Bg4 18. Bd1 Bf5 19. Qc3
Re4 $1 {Black takes the initiative.} 20. Qxc7 Qe8 $1 21. d3 (21. Qxd6 $5 Re1
22. Ra3 Rxf1+ 23. Kxf1 Be7 24. Qe5 Bxa3 25. bxa3 {also favours Black.}) 21...
Re1 22. Be3 $2 (22. Bd2 $1 Rxf1+ 23. Kxf1 Rc8 24. Qa5 Bxd3+ 25. Kg1 Bxd4 26.
Ra6 {tries to survive.}) 22... Rxf1+ 23. Kxf1 Bxd3+ 24. Kg1 $5 Bxd4 $1 25. Ra3
$6 (25. Qxb8 Qxb8 26. Bxd4 Qe8 27. h3 {brings the last chance.}) 25... Bxe3 26.
Rxd3 Bd2 27. g3 Rc8 $1 28. Qxd6 Qe1+ 29. Kg2 Qxd1 30. Qd7 Rc1 31. Qxb5 Qh1+ 32.
Kh3 Qf1+ 33. Kh4 g5+ 34. Kg4 h5+ $1 35. Kf5 Qxf2+ 36. Ke5 Bf4+ 37. Kf5 Bxg3+ {
Maderna scored reasonably well.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "14 (zt)"]
[Date "1951.??.??"]
[Round "16"]
[White "Eliskases, Erich"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "C10"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1951.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Be7 6. Bd3 Ngf6 7. Qe2 Nxe4 8.
Qxe4 $5 c5 9. O-O cxd4 10. Rd1 $5 (10. Qxd4 $1 O-O 11. Qe4 Nf6 12. Qh4 {
takes the initiative.}) 10... Nc5 11. Bb5+ Bd7 12. Bxd7+ Qxd7 13. Qg4 $5 {
Eliskases keeps the game going.} Bf6 14. Nxd4 O-O 15. Be3 Rfc8 $5 16. c4 Qe7
17. Rac1 Nd7 $6 {He should not retreat.} ({Better is} 17... a5 18. Rc2 Na6 19.
Nb5 Rd8) 18. b3 a6 19. Qe4 Nc5 20. Qf3 g6 $6 ({Preferable is} 20... Rd8 $5) 21.
Ne2 a5 22. Rd2 b6 23. Rcd1 Bg7 24. Nd4 $5 Qf6 25. Qxf6 Bxf6 26. Nb5 Rd8 27. f3
Rxd2 28. Rxd2 {White has an edge in the endgame.} Be7 $6 ({The natural move is
} 28... Rd8 $1) 29. Kf2 Rc8 30. Ke2 Kf8 31. Bh6+ Kg8 $5 (31... Ke8 $6 32. Nd6+
Bxd6 33. Rxd6 Nd7 34. Bg5 {favours White.}) 32. Bf4 Rd8 33. Bc7 Rxd2+ 34. Kxd2
Nd7 35. Nd6 Bg5+ 36. Kc2 Be3 37. Nc8 Kf8 $5 38. a3 $1 Bg1 $2 (38... Bc5 $1 39.
Kc3 $1 Bxa3 40. Nxb6 Bb4+ 41. Kc2 Nc5 {blockades the queenside completely.})
39. b4 $1 axb4 40. axb4 e5 $5 41. h3 $5 f5 42. c5 $1 bxc5 43. b5 $1 c4 44. b6
Kf7 45. b7 e4 $5 46. fxe4 fxe4 47. Nb6 $1 Bxb6 48. Bxb6 Ke6 49. Bc7 e3 50. b8=Q
Nxb8 51. Bxb8 Kf5 52. Kc3 Ke4 53. Kxc4 e2 54. Bg3 g5 55. Kc3 Ke3 56. Be1 h5 57.
Kc2 {Eliskases won many games.} 1-0

[Event "Mar del Plata/Buenos Aires"]
[Site "14 (zt)"]
[Date "1951.??.??"]
[Round "18"]
[White "Bolbochan, Julio"]
[Black "Bauza, Lorenzo"]
[Result "1-0"]
[ECO "E11"]
[Annotator "JvR"]
[PlyCount "61"]
[EventDate "1951.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Bd2 Qe7 5. g3 Ne4 6. Bg2 O-O 7. O-O Nxd2 8.
Nbxd2 c6 9. c5 $5 ({Known is} 9. e4) 9... b6 10. Nc4 $1 bxc5 $6 ({Better is} 
10... Ba6 $1 11. cxb6 $1 d5 12. bxa7 Rxa7 13. Ne3 Nd7 {
and Black has an excellent compensation for the pawn.}) 11. a3 $1 Ba6 $1 12.
axb4 Bxc4 13. bxc5 Na6 14. Nd2 Bb5 15. Ne4 Nc7 16. Nd6 {
White has a superior game.} Rfb8 17. Qd2 Ne8 18. Ne4 f5 19. Nc3 Nf6 20. Rfe1
Bc4 21. Ra4 Bb3 22. Ra3 e5 $5 ({More solid is} 22... Rb7) 23. e4 $1 exd4 24.
Qxd4 fxe4 $2 {Opening of the position helps the white attack.} (24... a5 25. e5
Bf7 {defends well.}) 25. Nxe4 Nxe4 26. Rxe4 Be6 27. Bh3 Rb5 28. b4 Rab8 $6 ({
Correct is} 28... a6) 29. Rxa7 Rxb4 30. Bxe6+ Qxe6 31. Qxg7+ $3 {
Julio Bolbochan and Eliskases were in a race for the first place.} ({
The pointe is} 31. Qxg7+ Kxg7 32. Rxe6 R8b7 33. Rxb7 Rxb7 34. Rd6 {
and White has a won rook ending.}) 1-0

[Event "Mar del Plata/Buenos Aires"]
[Site "14 (zt)"]
[Date "1951.??.??"]
[Round "23"]
[White "Reinhardt, Enrique"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "B07"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1951.03.??"]
[SourceDate "1999.07.01"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 Bg7 5. Bc4 $5 ({Usual is} 5. Be3) 5... Nbd7
6. Be3 a6 7. a4 O-O 8. Nge2 c5 9. O-O Nb6 $5 10. Ba2 cxd4 11. Bxd4 e5 12. Bf2
Be6 13. Bxe6 fxe6 14. a5 Nc4 15. Na4 $1 {White threatens to win a knight.} Bh6
$1 16. Qd3 d5 $1 17. Nb6 Nxb6 18. Bxb6 Qc8 $5 19. c3 Qc6 20. exd5 exd5 21. Rad1
Rae8 {The chances are about equal.} 22. f4 e4 $6 {He weakens the centre.} 23.
Qh3 $1 Bg7 24. f5 Qc4 25. Nf4 $1 gxf5 26. Qxf5 e3 27. Rfe1 $5 e2 $1 28. Rd4 Qb3
29. Ne6 Qxb2 30. Nxf8 $2 {White spoils his game.} (30. Rd3 $1 Rf7 31. Nxg7 Nd7
32. Qxf7+ Kxf7 33. Nxe8 Nxb6 34. Kf2 $1 {gains an advantage.}) 30... Qxc3 31.
Qb1 Bxf8 32. Rd3 $2 {The tables turn.} ({Better is} 32. Rf4 $1 Re6 33. Rf3 Bc5+
34. Kh1 Qb4 35. Rb3 Ne4 36. Rxb4 Nf2+ 37. Kg1 Nh3+ {
and Black delivers perpetual check.}) 32... Bc5+ $1 33. Kh1 $2 {
He misses his last chance.} (33. Bxc5 Qxc5+ 34. Kh1 Ne4 35. Rxe2 Nf2+ 36. Rxf2
Qxf2 37. Rd1 Re2 38. Rg1 {defends well.}) 33... Qxe1+ $1 34. Qxe1 Bb4 $1 35.
Qg3+ (35. Rg3+ Kf7 $1 36. Qxb4 e1=Q+ 37. Qxe1 Rxe1+ 38. Bg1 d4 {
leads to a won ending for Black.}) 35... Kh8 {He is going to win material. 
The final standings became: Julio Bolbochan and Eliskases 19/22, Maderna 15,
Flores 141/2, Guimard 14, Jacobo Bolbochan and Wexler 13, Letelier 121/2,
Marini and Rossetto 12, Esposito and Martin 11, Reinhardt 101/2, Liebstein,
Luckis and Mangini 91/2, Sumar 81/2, Schroeder 8, Bauza 7, Pinzon Solis and
Souza Mendes 61/2, Vasconcellos 6, Dantas 51/2. The Argentines Julio Bolbochan,
Eliskases and Maderna qualified for the interzonal tournament. Eliskases
played Saltsjobaden 1952 completely. Julio Bolbochan withdrew after two rounds
due to illness. Maderna did not participate at all. Pilnik took part on a spot
for North Americans. Noone made it to the next round.} 0-1

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "2"]
[White "Pinzon Solis, Felipe"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "C56"]
[Annotator "JvR"]
[PlyCount "120"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

{The fifteenth tournament in Mar del Plata was played in the Casino from 16
iii until 6 iv 1952. Trifunovic was the special guest among the eighteen
participants.} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Bc5 6. e5 Ng4
7. Bxf7+ $5 {White delivers a temporary sacrifice.} (7. c3 d5 8. exd6 {
was played in Euwe - Bergsma, Amsterdam 1925.}) 7... Kxf7 8. Ng5+ Kg8 9. Qxg4
h6 10. Qf3 hxg5 11. Qd5+ Kh7 12. Qxc5 Re8 $1 13. f4 gxf4 14. Bxf4 Qe7 15. Qd5
Qe6 16. Qe4+ Qg6 17. Nd2 Qxe4 18. Nxe4 Nxe5 {
Black grabs a pawn, when the endgame starts.} 19. Ng5+ Kg6 20. Bxe5 $6 (20.
Rad1 c5 21. Rde1 $1 d6 22. Ne4 {equalises.}) 20... Rxe5 21. Nf3 Re4 22. Rae1 $5
Rxe1 23. Nxe1 $2 (23. Rxe1 c5 24. Re8 {brings counter-play for the pawn.})
23... b6 24. Nd3 Ba6 25. Ne5+ Kh7 26. Rf7 Re8 27. Nf3 Bb5 28. Rf5 c5 29. Nxd4
cxd4 $2 (29... Bc4 $1 30. Nf3 Re2 {keeps the advantage.}) 30. Rxb5 {
The rook ending is drawn if White plays accurately.} Re2 31. Rd5 Rxc2 32. Rxd7
Rxb2 33. Rxa7 d3 34. Rd7 d2 35. Kf1 Rxa2 36. g3 $2 b5 $2 (36... Ra1+ 37. Ke2
d1=Q+ 38. Rxd1 Rxd1 39. Kxd1 Kg6 {leads to a won pawn ending.}) 37. Ke2 d1=Q+
38. Kxd1 Rxh2 39. Rd5 Rb2 40. Kc1 $1 Rb3 41. Kc2 Rxg3 42. Rxb5 Re3 43. Rb6 g6
44. Kd2 Re5 45. Rb3 Kh6 46. Rg3 $2 {He misses the theoretical draw.} ({Right is
} 46. Rh3+ $1 Kg5 47. Rh1 $1) 46... Kh5 47. Rg2 g5 48. Kd3 Kh4 49. Kd4 Re1 50.
Kd3 g4 51. Rh2+ Kg3 52. Rh8 Kg2 53. Rg8 g3 54. Rg7 Kh2 55. Rh7+ Kg1 56. Rg7 g2
57. Rg8 Re5 58. Rh8 Kf2 59. Rf8+ Kg3 60. Rg8+ Kf3 {Julio won in the end.} 0-1

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "3"]
[White "Rossetto, Hector"]
[Black "Cuellar Gacharna, Miguel"]
[Result "0-1"]
[ECO "C30"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

{South American players from outside of Argentina often took part in Mar del
Plata. Normally, they did not make the difference. Cuellar from Columbia
competed with the best.} 1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. Bc4 Nf6 5. d3 Nc6 6.
c3 O-O 7. b4 Bb6 8. Qb3 $6 (8. a4 a6 9. fxe5 dxe5 10. Bg5 {
occurred in Blackburne - Schlechter, Leipzig 1894.}) 8... a5 $5 {
Black has an advantage.} 9. b5 a4 10. Qc2 Na5 $1 11. fxe5 ({The pointe is} 11.
Qxa4 $2 d5 $1 12. exd5 exf4 13. d4 Re8+ 14. Kd1 Nxc4 $1 15. Qxc4 Qxd5 {
and White has been outplayed.}) 11... Ng4 $1 12. Bg5 ({Or} 12. exd6 Nxc4 13.
dxc4 Re8 $1) 12... Qe8 13. Nbd2 (13. exd6 Nxc4 14. dxc4 f6 15. Bc1 Bf5 $1 {
wins for Black.}) 13... h6 $1 14. Bf4 dxe5 15. h3 Nf2 16. Nxe5 Nxh1 17. d4 Nxc4
18. Ndxc4 f6 $1 19. Nxb6 cxb6 20. Nc4 Bf5 $5 21. Nd6 Bxe4 $1 22. Nxe8 (22. Nxe4
f5 23. Bd6 fxe4 24. Bxf8 Qxf8 25. O-O-O Nf2 $1 {ends the game.}) 22... Bxc2 23.
Nc7 Rac8 24. Kd2 Be4 25. Rxh1 Rf7 26. Re1 f5 27. c4 Rfxc7 28. Bxc7 Rxc7 {
Black has conquered a bishop.} 0-1

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "4"]
[White "Budowski, Gerardo"]
[Black "Trifunovic, Petar"]
[Result "0-1"]
[ECO "D98"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Bg4 8.
Be3 Nfd7 9. Rd1 Nc6 10. Be2 Bxf3 11. gxf3 Nb6 12. Qd3 e6 $5 ({Theory is} 12...
e5) 13. h4 e5 $5 {He changes his mind.} 14. d5 $1 Nd4 15. Bxd4 $6 {
White wants to gain a pawn.} ({Better is} 15. h5) 15... exd4 16. Nb5 Na4 17.
Rd2 $6 ({The pointe shows} 17. Qa3 $5 Nxb2 $1 18. Qxb2 d3) 17... c6 18. dxc6 $6
(18. Nxd4 $1 Qb6 19. Qc4 Nxb2 20. Qc3 {defends well.}) 18... bxc6 {
The c-file has been opened.} 19. Nxd4 Qb6 $1 {
Black has a decisive attack in the centre for the pawn.} 20. Qb3 (20. Qc4 $2
Nxb2 21. Qc3 {is refuted by} Rab8 $1) 20... Bxd4 21. Qxa4 Bxf2+ $1 22. Kf1 Rad8
23. Rxd8 Rxd8 24. Qb3 Rd2 $1 25. Qxb6 Bxb6 26. b3 Rxa2 {
Black has won a pawn in the endgame.} 27. f4 Rb2 28. Rh3 Bd4 29. Ke1 h5 30. f5
Kg7 31. fxg6 fxg6 32. Kd1 Bf6 33. Ke1 a5 34. Kf1 Ra2 35. Rd3 $6 (35. Ke1 $5 a4
$1 36. bxa4 Rxa4 37. Bd3 c5 {also wins for Black.}) 35... Bxh4 36. Rc3 Rb2 37.
Bd1 $6 (37. e5 Rb1+ 38. Kg2 Be7 39. Rf3 {prolongs the game.}) 37... Rf2+ 38.
Kg1 Rd2 39. Bc2 c5 $1 40. Kf1 Bf2 41. Rc4 Bd4 42. Ke1 Rg2 43. Bd1 h4 44. Rc2 h3
$1 {Trifunovic demonstrated a fine technique.} 0-1

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "6"]
[White "Michel, Paul"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "B08"]
[Annotator "JvR"]
[PlyCount "130"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. h3 O-O 6. Be3 Nbd7 7. Qd2 c6 8. Bh6
Qa5 $5 (8... e5 9. O-O-O Qa5 {drew in Tartakower - Ivkov, Bled 1950.}) 9. Bxg7
Kxg7 10. Be2 e5 11. O-O Re8 $5 12. dxe5 dxe5 13. a3 Qb6 14. Na4 Qc7 15. Qe3 Nf8
$5 16. Nc3 Ne6 17. Bc4 Nf4 18. Rfe1 h6 19. Bf1 Ne6 20. Rad1 b6 21. Qd2 Rd8 22.
Qe3 Bb7 23. Bc4 Nf4 {Long manoeuvres are followed by exchanges.} 24. Rxd8 Rxd8
25. Rd1 Rxd1+ 26. Nxd1 Qd6 27. Nc3 Bc8 28. Bf1 $5 Ne6 29. Qd3 Nd4 $1 {
Black has the initiative.} 30. Nxd4 Qxd4 31. Be2 $5 Bb7 32. Kf1 Ne8 33. f3 Nc7
34. Qxd4 exd4 35. Nd1 Kf6 36. Nf2 Ke7 37. Ke1 Ne6 38. Kd2 g5 39. g3 c5 40. Bc4
{White has restored his position.} Ng7 41. Nd3 $2 {
Michel blunders after the time control.} ({Better is} 41. h4 $1 f5 42. hxg5
hxg5 43. Bd3 $1 {and he stabilises the centre.}) 41... f5 $1 {
Black is going to win a pawn.} 42. Nf2 ({The pointe is} 42. exf5 $2 Nxf5 43. g4
Nd6 $1) 42... Nh5 43. g4 fxe4 44. Nxe4 ({Or} 44. gxh5 e3+ 45. Ke2 exf2 46. Kxf2
Kf6 {and Black wins the bishop ending.}) ({The alternative} 44. fxe4 Nf6 45.
Bd3 Kd6 46. Ke2 Ke5 47. Kf3 a5 48. b3 Bc6 49. a4 Bb7 {leads to zugzwang.})
44... Bxe4 $5 45. fxe4 Nf4 46. e5 Ng6 $1 47. e6 Nf4 48. c3 dxc3+ 49. bxc3 Nxh3
50. Ke3 Nf4 51. Ke4 Kf6 52. a4 Nxe6 53. Kd5 Nf4+ 54. Kc6 Ke5 55. Kb7 Kd6 56.
Kxa7 Kc7 57. Ka6 h5 58. gxh5 Nxh5 59. Kb5 Nf6 60. a5 bxa5 61. Kxc5 Ne4+ $1 62.
Kd4 Nd2 63. Be2 a4 64. c4 a3 65. Kc3 a2 $1 {Rossetto played a fine ending.} (
65... a2 66. Kb2 Nb3 $1 67. Kxa2 Nc1+ {gains a piece.}) 0-1

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "9"]
[White "Bolbochan, Julio"]
[Black "German, Eugenio"]
[Result "1-0"]
[ECO "D46"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 c6 3. c4 e6 4. Nc3 Nf6 5. e3 Nbd7 6. Bd3 Bb4 7. a3 Ba5 8. O-O
O-O 9. Qc2 Qe7 10. Bd2 dxc4 11. Bxc4 e5 12. Ba2 Bb6 13. Rae1 a5 $5 (13... g6 $6
{lost in Najdorf - Pilnik, Mar del Plata 1948.}) 14. Ne4 Nxe4 15. Qxe4 Bc7 16.
Bc3 Re8 17. h3 Bd6 $5 18. Rd1 Nf6 19. Qh4 exd4 20. Bxd4 Ne4 21. Qxe7 Rxe7 22.
Bb1 $1 {White has an edge.} f5 23. Nd2 $5 Nxd2 24. Rxd2 Bc7 $2 ({Better is} 
24... Be6 $1 25. Bxg7 Bxa3 26. Bf6 Bb4 27. Bxe7 Bxd2 {and equality.}) 25. Bc5
$5 Rd7 26. Ba2+ Kh8 27. Rfd1 Rxd2 28. Rxd2 {
The black pieces are restricted in the endgame.} h6 29. f3 a4 30. e4 fxe4 31.
fxe4 Ra5 $6 (31... Kh7 $1 32. Bd6 Bb6+ 33. Kf1 Be3 34. Rd3 Bg5 {
liberates one bishop.}) 32. Bd4 $6 Rg5 $6 33. Kf1 $2 (33. e5 $1 Rf5 34. e6 Bd6
35. Bb6 Be7 36. Bd8 {wins for White.}) 33... Rg6 34. Rf2 Be6 35. Rf8+ Kh7 36.
Bb1 Bc4+ $2 (36... Rg5 $1 37. Re8 Be5 $1 {
blocks the advance of the passed pawn.}) 37. Kf2 $5 Bg3+ 38. Kf3 Bd6 39. Rd8
Be7 40. Rd7 Re6 41. e5+ Kg8 42. Bf5 Kf7 43. Bxe6+ Kxe6 44. Rc7 {
Julio scored many points.} 1-0

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "12"]
[White "Rossetto, Hector"]
[Black "Ader Hausman, Walter"]
[Result "1-0"]
[ECO "D46"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 dxc4 8.
Bxc4 O-O 9. O-O e5 10. Bd2 $5 ({Usual was} 10. Rd1) 10... Qe7 11. dxe5 $6 ({
Theory will become} 11. Bb3 $5) 11... Nxe5 12. Nxe5 Qxe5 13. f4 Qh5 $1 14. Rae1
{White wants to conquer the centre.} Re8 $5 ({Even better is} 14... Bf5 $1 15.
Bd3 Bxd3 16. Qxd3 Rad8 $1) 15. Bd3 Bd7 16. Ne4 Nxe4 17. Bxe4 Re7 18. b4 Rae8
19. Bd3 f5 {Black controls the e-file.} 20. Rf3 Bc7 21. Kh1 Qf7 22. a4 a6 23.
Bc3 Be6 24. Rg3 g6 $1 25. Bb2 Bb3 $6 (25... h6 26. Qc3 Kh7 {defends well.}) 26.
Qc3 $1 Kf8 27. Rf3 $6 (27. Bxf5 $1 Qxf5 28. Qxb3 Bxf4 29. Rf1 Rxe3 30. Qd1 Re2
31. Rgf3 g5 32. Qd4 {stages a strong attack.}) 27... Bd5 28. Rff1 Rxe3 $1 29.
Qh8+ Qg8 30. Qf6+ Qf7 31. Qh8+ Qg8 32. Qf6+ Bf7 $2 {
Black should accept a repetition.} 33. Rxe3 Rxe3 34. Bc4 $2 (34. Qd4 $1 Re7 35.
b5 $1 {wins for White.}) 34... Re4 $2 (34... Ke8 $1 35. Bxf7+ Qxf7 36. Qh8+ Qf8
37. Qxh7 Qf7 38. Qh8+ Qf8 39. Qh7 {leads to another perpetual.}) 35. Rd1 $1
Rxc4 36. Rd8+ $1 Bxd8 37. Qxd8+ Be8 38. Qd6+ {
Rossetto delivers mate on the next move.} 1-0

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "14"]
[White "Michel, Paul"]
[Black "Budowski, Gerardo"]
[Result "1-0"]
[ECO "C11"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 Nc6 7. f4 Qb6 8. a3 a5
9. b3 $5 ({Known is} 9. Nf3 $1 a4 10. g3) 9... Be7 10. Nf3 f6 11. g3 cxd4 12.
cxd4 fxe5 13. fxe5 O-O 14. Bg2 Rf7 15. h4 h6 16. Ra2 Nf8 17. O-O Bd7 18. Kh2 a4
$6 {Black exposes a pawn.} ({Preferable is} 18... Rc8) 19. b4 $1 Nd8 $6 (19...
Bd8 $1 20. Rc2 Ne7 {reorganises the defence.}) 20. Nc3 $1 Bb5 $5 21. Nxb5 Qxb5
22. Rc2 $1 {White dominates the queenside.} Nc6 23. Be3 Na7 24. Nd2 Rc8 25.
Rxf7 Kxf7 26. Bf1 $1 Qd7 27. Nb1 Kg8 28. Bd3 Rb8 $5 29. Qg4 Kh8 30. Qh5 Rc8 31.
Rf2 Qe8 32. Qd1 $5 Rc7 33. Qd2 Bd8 $5 34. Nc3 Kg8 35. Rf3 Qh5 36. Qf2 $1 {
Pieces are aimed towards the king.} Qe8 $2 37. Rxf8+ $1 {
Michel attacked on two flanks.} ({The pointe is} 37. Rxf8+ Qxf8 38. Bh7+) 1-0

[Event "Mar del Plata"]
[Site "15"]
[Date "1952.??.??"]
[Round "17"]
[White "Gentil, Luiz Jr"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "D58"]
[Annotator "JvR"]
[PlyCount "152"]
[EventDate "1952.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 b6 8. cxd5
exd5 9. Bd3 Be6 10. O-O Nbd7 11. Rc1 c5 12. dxc5 $5 (12. Bb1 {
drew in Colle - Tartakower, Amsterdam 1926.}) 12... bxc5 13. Qe2 Rb8 14. h3 Rb4
15. Rfd1 Qa5 16. Bb1 Rfb8 17. b3 Bf8 18. Bg3 Re8 19. Qd2 Qa6 20. Ne5 d4 $1 21.
Nxd7 $6 ({Better is} 21. exd4 $1 cxd4 22. Ne4) 21... Bxd7 22. exd4 cxd4 23. Na4
Bxa4 24. bxa4 Rxa4 {Black grabs a pawn.} 25. Re1 Rxe1+ 26. Qxe1 Rc4 27. Rd1 Qc6
28. Be5 Bc5 29. Qd2 Nd7 30. Bg3 Rc3 31. Qf4 Bb6 32. Kh2 Nf8 33. Qb8 Qc8 34.
Qxc8 Rxc8 {The white pieces stop the extra pawn in the endgame.} 35. Kg1 Ne6
36. Kf1 g6 37. f3 Kf8 38. Bf2 Ke7 39. g3 Rc3 40. Ke2 h5 41. h4 Kd6 42. Be1 Re3+
43. Kf2 Bc5 44. Bd2 Ra3 45. Bc1 Ra5 46. Ke2 Bb4 47. Bb2 Bc5 48. Rd2 Ra4 49. Bc2
$2 {White gives up the two bishops.} ({Preferable is} 49. f4 $5 Ra5 50. Kf3 {
and the game lingers on.}) 49... Rxa2 50. Bb3 Ra5 51. Bxe6 Kxe6 52. Bxd4 Bd6 {
Black has a won endgame after the exchanges.} 53. Bf2 Re5+ 54. Kf1 a5 55. Ra2
Bb4 56. Bd4 Rd5 57. Be3 Kd6 58. Ke2 Kc6 59. Rc2+ Kb7 $5 {Black takes his time.}
60. Rc4 Rd7 61. g4 Rd5 62. Rf4 f5 63. gxh5 gxh5 64. Rc4 Be7 65. Bf2 Rb5 66. Rf4
$6 Bd6 $1 67. Rc4 Rb2+ 68. Kf1 Rb4 $1 69. Rc2 $5 {
Exchange brings a won bishop ending.} a4 70. Rd2 a3 $1 71. Rxd6 a2 72. Rd7+ Kc6
73. Ra7 Rb1+ 74. Kg2 a1=Q 75. Rxa1 Rxa1 76. Kg3 Ra4 {Rossetto won the last two
games and joined the lead.  The final standings became: Julio Bolbochan and
Rossetto 111/2/17, Cuellar Gachama and Trifunovic 11, Michel 101/2, Jacobo
Bolbochan 10, German and Reinhardt 91/2, Ader and Budowski 81/2, Letelier,
Luckis and Wexler 8, Maderna 71/2, Garcia Vera 6, Pinzon Solis 51/2, Puiggros
5, Gentil 31/2.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "2"]
[White "Medina Garcia, Antonio"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "C07"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

{The sixteenth tournament in Mar del Plata was played from 15 iii until 7 iv
1953. Twenty men battled at the Casino. Special guests were Gligoric and
Trifunovic from Yugoslavia, Medina from Spain, Ojanen from Finland and H.
Steiner from the USA. The best Argentinians participated. It was the usual
formulae for international events in those days: A handful of foreigners
competed with local heroes, but the locals had a better chance than in
Beverwijk and Hastings.} 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5
6. Bc4 Qd6 7. O-O Nf6 8. Nb3 Nc6 9. Qe2 {Usual is the capture of d4.} Be7 $5
10. Rd1 $2 (10. Bg5 $5 O-O 11. Rfe1 {
will draw in Zapata - Dolmatov, Tilburg 1993.}) 10... e5 $1 {
Eliskases gains a strong position in the centre.} 11. Bb5 Bg4 12. Na5 (12. Qxe5
$5 Qxe5 13. Nxe5 Bxd1 14. Nxc6 a6 15. Nxe7+ axb5 16. Nf5 Bxc2 17. Nxg7+ Kf8 18.
Nxd4 Kxg7 19. Nxc2 {also favours Black.}) 12... O-O $1 13. Nxb7 Qc7 14. Qc4 $6
(14. Bxc6 Qxc6 15. Nxe5 $5 Bxe2 16. Nxc6 Bxd1 17. Nxe7+ Kh8 {costs an exchange.
}) 14... Bxf3 15. gxf3 Rac8 16. Bxc6 Qxc6 17. Qxc6 Rxc6 18. c3 $5 dxc3 19. bxc3
Rb8 20. Na5 Rxc3 {Eliskases has kept his extra pawn in a won endgame.} 21. Be3
a6 22. Rab1 Rxb1 23. Rxb1 h6 24. Rb8+ Kh7 25. Rb7 Nd5 26. Nb3 f5 27. Rd7 Rd3
28. Bd2 Bg5 29. Bxg5 Rd1+ 30. Kg2 hxg5 {Black threatens mate in two.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "3"]
[White "Najdorf, Miguel"]
[Black "Steiner, Herman"]
[Result "1-0"]
[ECO "D30"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. g3 Bd6 5. Bg2 Nd7 6. Qc2 Ne7 $5 ({Usual is} 6...
Ngf6) 7. e4 $5 dxc4 8. e5 $5 Bb4+ 9. Bd2 Bxd2+ 10. Nbxd2 O-O ({
The alternative is} 10... b5 $1 11. O-O f6) 11. Nxc4 Nb6 12. O-O Nf5 $5 13.
Rfd1 Nd5 $5 14. Ncd2 Qe7 15. Ne4 Rd8 16. a3 Bd7 17. Bh3 b6 18. Rac1 Kh8 19. Re1
Rg8 20. Nd6 $5 Nh6 $6 ({Better is} 20... Nxd6 21. exd6 Qf6 ({not} 21... Qxd6 $4
22. Ng5 $1)) 21. Qd2 Raf8 22. Bg2 f5 23. Qg5 $1 Nf7 24. Qxe7 Nxe7 25. Nd2 Nd8
26. b4 $1 {The attack has switched from the kingside to the queenside, a great
strategic decision by Najdorf.} g5 27. a4 Rg7 28. b5 h5 29. Rc2 Rfg8 30. Rec1
$1 {Capture on c6 threatens.} cxb5 31. axb5 Nf7 32. Rc7 Nxd6 33. exd6 Nd5 34.
Bxd5 exd5 35. Rxa7 Bxb5 36. Rxg7 Kxg7 37. Rb1 Be2 38. Rxb6 {
White has won a pawn.} f4 39. Kg2 $6 Rd8 $2 (39... Kf6 $1 40. Nb3 f3+ 41. Kg1
Bd3 42. d7+ Ke7 43. Nc5 Bf5 {offers more resistance.}) 40. gxf4 gxf4 41. Nb3
Kf6 42. f3 Ra8 43. Nc5 h4 44. d7+ Kf5 45. Rd6 Bc4 46. d8=Q Ra2+ 47. Kg1 Ra1+
48. Kf2 Rf1+ 49. Kg2 h3+ 50. Kxh3 Rxf3+ 51. Kh4 {
Steiner had a hard time in Mar del Plata.} 1-0

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "4"]
[White "Carvalho, Flavio"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "E67"]
[Annotator "JvR"]
[PlyCount "100"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 Nbd7 7. O-O e5 8. h3
c6 9. dxe5 dxe5 10. Be3 Qe7 11. Qb3 Nh5 12. Ne4 $6 ({Known is} 12. Rfd1) 12...
f5 $1 13. c5+ Kh8 14. Bg5 Nhf6 15. Nxf6 Nxf6 16. Qe3 e4 $1 17. Nd2 Be6 18. Rfd1
$6 Rfe8 $5 19. Nb3 Qf8 $1 20. Nd4 $5 Bf7 $5 (20... Qxc5 $1 {grabs a pawn.}) 21.
Qa3 Nd5 22. e3 h6 23. Bf4 Nxf4 24. gxf4 Red8 {Black has a positional advantage.
} 25. b4 Bd5 26. Rab1 Qf7 27. Rd2 g5 28. Rbd1 gxf4 29. exf4 Rg8 30. Qe3 $6 Qg6
$6 (30... Bxd4 31. Rxd4 Qg7 $1 {wins at once.}) 31. Ne2 Bf6 32. Ng3 h5 33. h4
$5 Bxh4 34. Kh2 Bxg3+ 35. fxg3 Rg7 36. Bh3 Rag8 37. Rg1 Qf6 38. Rdg2 Be6 39. a3
Bc4 40. Rc1 Bd3 41. Rcg1 Rd8 42. Rd2 Rgd7 43. Rgd1 Rd5 44. Rc1 Kg7 45. Kg1 Kg6
46. Kf2 R8d7 47. Bg2 a5 48. Ke1 axb4 49. axb4 Rd4 50. Rb2 Rc4 {
Gligoric and Najdorf competed for the first place.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "6"]
[White "Ojanen, Kaarle"]
[Black "Trifunovic, Petar"]
[Result "0-1"]
[ECO "E51"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. a3 Bxc3+ 7. bxc3 c5 8.
cxd5 Nxd5 $6 {Black loses control over the centre.} ({Theory is} 8... exd5) 9.
c4 Nf6 10. Qc2 cxd4 11. exd4 Bd7 12. Be2 b5 $5 13. c5 $1 ({The pointe is} 13.
cxb5 $6 Bxb5 $1) 13... Bc6 14. O-O Be4 15. Qc3 $6 (15. Qb2 $1 Nc6 16. Bg5 {
keeps an edge.}) 15... Nc6 16. Be3 Nd5 $1 {Black blockades two pawns.} 17. Qc1
Rb8 18. Ne5 Qc7 19. Nxc6 Qxc6 20. Qd2 $2 {Ojanen misses a 'petite combinaison.'
} ({Better is} 20. f3 Bf5 21. Bf2) 20... Bxg2 $1 21. Rfe1 (21. Kxg2 Nf4+ $5 22.
Kg3 Qg2+ $1 23. Kxf4 f6 {leads to mate in three.}) 21... Ne7 $5 22. Bf4 Rb7 $5
23. Bd6 Bd5 24. Qc3 Rc8 25. Bxe7 Rxe7 26. Reb1 $2 e5 $1 27. Bxb5 Qg6+ 28. Qg3
Qe4 $1 29. f3 Qxd4+ 30. Qf2 Qxf2+ 31. Kxf2 Rxc5 32. Bd3 g6 {
Trifunovic has won two pawns.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "6"]
[White "Steiner, Herman"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "E81"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 c5 7. d5 e6 8. Qd2 exd5
$5 9. Nxd5 Be6 10. Nc3 $5 ({Theory will become} 10. Ne2 $1) 10... Nc6 11. Rd1
a6 12. Qf4 (12. Qxd6 $5 Qxd6 13. Rxd6 Nd7 14. Kf2 {brings about equality.})
12... Ne5 13. Qh4 $2 ({Correct is the passive} 13. Qd2 Qa5 14. b3) 13... Re8 $5
14. Nh3 $6 h6 $5 {Pawn c4 could be captured as well.} 15. Bxh6 Nxe4 $1 16. Qxd8
Rexd8 17. Bxg7 $5 Nxc3 18. Bxe5 Nxd1 19. Bf6 Ne3 20. Bxd8 Rxd8 21. b3 Bxh3 22.
gxh3 {Black has advantages in the endgame.} d5 $1 23. cxd5 Rxd5 24. Be2 Nf5 $5
(24... Ng2+ $1 25. Kf2 Rd2 $1 {wins more quickly.}) 25. Bc4 Rd6 $5 26. Ke2 b5
27. Bd3 Nd4+ 28. Ke3 f5 29. Rc1 $5 Re6+ $6 30. Kf2 Rc6 {
The black rook has become passively.} 31. h4 Kf7 32. Ke3 $5 Kf6 33. Rg1 Ne6 $1
34. f4 $2 (34. a4 $1 Nd4 35. h5 {counters desperately.}) 34... Rd6 $1 35. Be2
Rd4 36. h5 (36. Rf1 Re4+ 37. Kd2 Nxf4 {also loses a pawn.}) 36... Re4+ 37. Kd2
Nxf4 38. Bf3 Rd4+ 39. Ke3 Nxh5 40. Rc1 f4+ $1 41. Ke2 c4 42. bxc4 bxc4 43. Bb7
a5 44. Ba6 Rd3 45. Rxc4 Rh3 46. Ra4 Rxh2+ 47. Kf3 Rh3+ 48. Kf2 Kg5 49. Bb7 Kh4
50. Rxa5 g5 51. Be4 Re3 52. Ra4 Nf6 53. Bf3 Ng4+ 54. Bxg4 Kxg4 55. Ra8 Rh3 56.
a4 Rh2+ 57. Kg1 Ra2 58. Ra5 Kh4 {Julio competed well.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "8"]
[White "Cuellar Gacharna, Miguel"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D75"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Bg7 6. Nf3 O-O 7. O-O c5 8.
dxc5 Nc6 9. Nbd2 Ndb4 10. a3 Na6 11. Rb1 Nxc5 12. b4 Ne6 13. Bb2 Ncd4 14. e3 $5
(14. Nxd4 Nxd4 15. Nb3 {led to a white plus in Trifunovic - Puc, Belgrade 1948.
}) 14... Nb5 $5 (14... Nxf3+ 15. Nxf3 Bxb2 16. Rxb2 a5 {makes useful exchanges.
}) 15. Qb3 Bxb2 16. Rxb2 a5 $5 17. a4 $5 Nd6 18. Nc4 axb4 19. Qxb4 Nxc4 20.
Qxc4 Qa5 $5 ({Preferable is} 20... Qd6 21. Rc1 Ra5) 21. Ra1 Bd7 $6 {
There is no need to sacrifice a pawn.} 22. Rxb7 Nc5 $2 (22... Rfc8 $1 23. Qh4
Bc6 24. Rb2 Qf5 {brings compensation.}) 23. Rbb1 $1 Rab8 24. Ne5 Rxb1+ $5 25.
Rxb1 Bxa4 $5 {Black hopes to regain matter.} 26. Ra1 Qb5 27. Rxa4 $1 Qxa4 28.
Qxc5 {But White still has a material plus.} Qd1+ 29. Bf1 e6 30. Qc7 Qd8 31. Qc4
Qd1 32. e4 Qa1 33. Qc7 Qa8 34. Nd7 Qd8 $5 35. Qd6 $1 Re8 36. Bb5 $1 Kg7 37.
Qe5+ Kh6 ({Or} 37... f6 38. Nxf6 Qxf6 39. Qxf6+ Kxf6 40. Bxe8) 38. Nf6 Qd1+ 39.
Kg2 Rd8 40. h3 g5 41. Ng4+ {Cuellar fought hard for the win.} 1-0

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "8"]
[White "Najdorf, Miguel"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "C04"]
[Annotator "JvR"]
[PlyCount "127"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Bb5 a6 7. Bxc6 bxc6 8. c4
dxc4 9. O-O $5 (9. Nxc4 Nb6 10. Nxb6 cxb6 {
was played in Gligoric - Szabo, Saltsjobaden 1948.}) 9... Be7 $2 (9... Nb6 $1 {
hinders the capture of pawn c4.}) 10. Nxc4 Nb6 11. Na5 $1 Qd5 12. Bd2 {
White has a great positional advantage.} Nc4 13. Nxc4 Qxc4 14. Bg5 Bxg5 $6 (
14... f6 $1 15. Bf4 O-O {offers more resistance.}) 15. Nxg5 h6 16. b3 $5 Qd5
17. Nf3 c5 18. Rc1 cxd4 19. Qxd4 Bb7 $5 {Black sacrifices a pawn.} (19... Qxd4
20. Nxd4 Ra7 21. Nc6 Rb7 22. Na5 Ra7 23. Rc4 {brings a great endgame for White.
}) 20. Rxc7 O-O 21. Qxd5 Bxd5 22. Nd4 a5 23. a3 Rfb8 24. Rb1 Be4 25. Re1 Rc8
26. Rxc8+ Rxc8 27. f3 Bd5 28. Kf2 Rc3 29. Ke2 $1 Rc7 {The rook has to return.}
30. Kd2 Rb7 31. Kc3 f6 32. exf6 gxf6 33. f4 $1 Kf7 34. g3 h5 35. Re3 Rb8 $5 36.
Kb2 Rb7 37. Rc3 e5 $5 {He seeks counter-play.} 38. fxe5 fxe5 39. Nc6 $2 {
The minor pieces should not be exchanged.} (39. Rc5 $1 Rd7 40. Nc2 Kf6 41. Rxa5
{leads to a won ending.}) 39... Bxc6 40. Rxc6 e4 $1 {Black counters timely.}
41. Rc4 Re7 $1 42. Kc2 e3 43. Kd1 e2+ 44. Ke1 Re3 45. Rh4 Kg6 46. g4 $5 Kg5 $1
47. Rxh5+ Kxg4 48. Rxa5 Rxb3 49. Kxe2 Rh3 $1 50. Kf2 Rxh2+ 51. Ke3 Rc2 52. Kd3
Rc1 $2 {He misses a theoretical draw.} ({Correct is} 52... Rf2 $1 53. a4 Rf4
54. Ra8 Kg5 55. a5 Kg6 56. a6 Kg7 57. a7 Ra4 {and Black escapes.}) 53. a4 $1
Kf4 54. Rd5 Ra1 55. a5 Rc1 56. Kd4 Ra1 57. Kc4 Ke4 58. Rh5 {
Guimard cannot stop the passed pawn.} Ra2 59. Kb5 Rg2 60. a6 Rg7 61. Rh6 Kd5
62. Kb6 Rg1 63. a7 Rg8 64. Rh7 {Najdorf won a difficult rook ending.} 1-0

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "9"]
[White "Shocron, Ruben"]
[Black "Cuellar Gacharna, Miguel"]
[Result "0-1"]
[ECO "C53"]
[Annotator "JvR"]
[PlyCount "120"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Bb6 5. a4 $5 (5. d4 $1 Qe7 6. d5 {
occurred in Horowitz - Bledow, Berlin 1837.}) 5... Nf6 6. d3 d6 7. Na3 Ne7 $5
8. Ba2 $5 c6 9. Nc4 Bc7 10. O-O Ng6 11. Re1 O-O 12. Bd2 Bg4 13. Ne3 Be6 14. Nf5
Qd7 15. Ng3 d5 16. Ng5 h6 17. Nxe6 fxe6 18. f3 Bb6+ 19. Kh1 Rad8 20. exd5 exd5
21. Qc2 Bf2 22. Re2 Bxg3 23. hxg3 Nh5 $1 24. Be1 Qd6 25. Kh2 Ne7 26. Bf2 Nf5
27. Rae1 e4 $1 {The black attack starts.} 28. dxe4 Nhxg3 29. exf5 $5 {
White makes an effort to win.} (29. Bxg3 Qxg3+ 30. Kh1 Qh4+ 31. Kg1 Ng3 32. Re3
Qh1+ 33. Kf2 Qh4 {draws.}) 29... Nxe2+ 30. g3 $1 Nf4 $1 31. gxf4 Qxf4+ 32. Kg2
Rxf5 33. Qe4 $1 Rg5+ 34. Kf1 Qh2 35. Qe6+ Kh8 36. Bb1 $5 Rf8 37. Qe3 Qh5 $5 38.
f4 Rg4 39. Qd3 Kg8 40. Qh7+ Kf7 41. Re5 Qh3+ 42. Ke1 Rxf4 $5 (42... Qh1+ 43.
Ke2 Rxf4 44. Qg6+ {leads to perpetual check.}) 43. Qg6+ $5 Kg8 44. Qh7+ Kf7 45.
Bg6+ $1 Kf6 46. Bd4 $2 (46. Re2 $1 {gains an advantage.}) 46... Qh4+ 47. Ke2
Qg4+ 48. Ke3 c5 $1 49. Bxc5 Rc8 $6 (49... Rf1 $1 50. Be7+ $1 Kxe5 51. Qxg7+ Ke6
52. Bf7+ R8xf7 53. Qxg4+ Kxe7 {brings a better endgame for Black.}) 50. Bd4
Qf3+ 51. Kd2 Rxd4+ 52. cxd4 Qf2+ 53. Re2 Qf4+ 54. Kd3 $4 {Shocron blunders.} (
54. Re3 $1 Qf2+ 55. Re2 Qf4+ 56. Re3 {draws.}) 54... Rc1 $1 55. Bh5 Rd1+ 56.
Kc3 Qxd4+ 57. Kc2 Rg1 58. Re8 Qc4+ 59. Kd2 Qc1+ 60. Ke2 Qe1+ {
Cuellar won a great battle.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "10"]
[White "Maderna, Carlos"]
[Black "Letelier Martner, Rene"]
[Result "0-1"]
[ECO "B93"]
[Annotator "JvR"]
[PlyCount "122"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Nc6 7. Be3 e5 $5 8.
Nf3 Ng4 9. Bg1 exf4 10. Nd5 Ne3 $1 11. Nxe3 fxe3 12. Bxe3 Qe7 $5 13. Bc4 Be6
14. Bxe6 Qxe6 15. Ng5 $5 {White wants to attack.} Qe5 16. O-O f6 17. Nh3 Qxe4
$5 {Black accepts the challenge.} 18. Re1 Ne5 19. Nf4 Kf7 20. c3 Qc4 $5 21. Nd5
{The extra pawn is blockaded.} Re8 22. Rf1 Be7 23. Rf4 Qc8 24. Qb3 Qe6 25. Raf1
$5 {He wants to attack.} (25. Qxb7 Rb8 26. Qxe7+ Qxe7 27. Nxe7 Kxe7 28. b3 {
brings about equality.}) 25... b5 $1 26. Qd1 Ng6 27. Qh5 Bd8 28. Bd4 Qe2 $6 (
28... Kg8 $1 29. Rg4 Qf7 {defends more accurately.}) 29. Nxf6 $2 {
The exchange of queens favours Black.} (29. R4f3 $1 Qc4 30. b3 Qc6 31. Rf5 {
keeps the initiative.}) 29... Qxh5 30. Nxh5+ Nxf4 31. Rxf4+ Bf6 32. Nxg7 $6 (
32. Nxf6 $1 gxf6 33. Rxf6+ Ke7 34. Rh6 Rhf8 35. Rxh7+ {
gives a defendable endgame.}) 32... Re5 $1 33. Nf5 Re6 34. Bxf6 $5 Rxf6 35.
Nxd6+ Ke6 36. Rd4 $2 (36. Rxf6+ Kxf6 37. Kf2 Rd8 38. Ne4+ Ke5 39. Ke3 Rd1 40.
Nf2 {leads to a hard struggle for White.}) 36... Rhf8 $1 {
The black counteraction decides the game.} 37. h3 Rf1+ 38. Kh2 R8f2 39. Ne4
Rxb2 40. Nc5+ Kf7 41. Rd7+ Kg8 42. Nxa6 Rff2 43. Kg3 Rxg2+ 44. Kf4 Rxa2 45. Nb4
Raf2+ 46. Ke5 Rg3 47. Nd5 Rxh3 48. Rb7 Rh5+ 49. Ke4 Rh4+ 50. Ke5 Rf7 51. Rxb5
Kg7 52. Rc5 h5 53. c4 Rg4 54. Rc8 h4 55. Nc7 h3 56. Ne8+ Kh7 57. Ke6 Rf8 58.
Rc7+ Kh6 59. Nf6 Rxf6+ $1 60. Kxf6 h2 61. Rc8 Rg7 $1 {
Letelier countered magnificently.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "11"]
[White "Eliskases, Erich"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B93"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. Bd3
Be7 9. O-O O-O 10. Kh1 b5 11. a3 $5 Bb7 12. Nh4 g6 13. Nf3 $1 Nh5 $5 14. fxe5
dxe5 15. Bh6 Re8 16. a4 b4 17. Bc4 $4 {Eliskases hopes to win.} ({Correct is} 
17. Nd5 $1 Bxd5 18. exd5 Ndf6 19. Nxe5 Qxd5 20. Nc4 {and equality.}) 17... bxc3
$1 18. Ng5 Bxg5 19. Rxf7 Bxh6 $1 {But Najdorf refutes the tactics.} 20. Rxd7+
Kh8 21. Rxd8 Raxd8 22. Qb1 Bxe4 23. bxc3 Rd2 24. Bf1 Ba8 25. Qb6 Nf4 26. Qf6+
Bg7 27. Qxa6 Nxg2 $1 28. Bxg2 Bxg2+ 29. Kg1 Ba8 30. Qf1 Rf8 31. Qh3 Bh6 $1 {
Black is going to mate soon.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "12"]
[White "Najdorf, Miguel"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "E99"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

{Gligoric leads half-a-point on Najdorf.} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4
d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 {This opening has been called the
Mar del Plata Variation. The position was known but the moves were played in
this order for the first time. It became a popular line of the King's Indian
Defence.} 9. Ne1 Nd7 10. Nd3 $5 {A new move is played.} (10. Be3 f5 11. f3 {
occurred in Taimanov - Aronin, Moscow 1952.}) 10... f5 11. f3 f4 12. Bd2 Nf6
13. b4 g5 14. c5 h5 15. Nf2 Ng6 16. Rc1 Rf7 17. cxd6 cxd6 18. a4 Bf8 19. a5 Rg7
$1 {The players advance on the flanks in a closed position.} 20. h3 $6 {
White slightly weakens his kingside.} ({A novelty will become} 20. Nb5 $5)
20... Nh8 $5 21. Nb5 g4 $1 {The charge on the king begins.} 22. fxg4 hxg4 23.
hxg4 a6 24. Na3 Bd7 25. Nc4 $1 Rc8 26. Nb6 Rxc1 27. Bxc1 Be8 28. Ba3 $2 {
Najdorf loses time.} (28. Qc2 Nf7 29. Qc8 {brings the exchange of queens.})
28... Nf7 $1 29. Qc2 Nh6 30. g5 $6 (30. Qc8 $1 Qxc8 31. Nxc8 Nhxg4 32. Nxg4
Nxg4 33. Bxg4 Rxg4 34. b5 $1 Bxb5 35. Rf3 Rg6 36. Kf2 {defends well.}) 30...
Rxg5 31. Rc1 $5 Rg3 $1 32. Bb2 Nfg4 33. Nxg4 Nxg4 34. Bxg4 Rxg4 35. Qf2 Bg6 36.
Rc4 Qe7 37. Bc3 Qh7 $1 {He attacks on the open h-file.} 38. Qe2 Rh4 39. Kf2 f3
$1 40. Qe3 Rf4 41. gxf3 Qh2+ 42. Ke1 Qh1+ 43. Ke2 Bh5 44. Kd2 Rxf3 45. Qg5+ Bg7
46. Kc2 Rf2+ 47. Bd2 Qd1+ 48. Kc3 Qa1+ {
Gligoric played a model game. His lead increased to one-and-a-half points.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "13"]
[White "Gligoric, Svetozar"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "E16"]
[Annotator "JvR"]
[PlyCount "163"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 e6 2. Nf3 Nf6 3. c4 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Be7 7. Nc3 O-O 8. O-O
d5 9. cxd5 exd5 10. Qb3 Nbd7 11. Rad1 $5 Re8 $2 (11... c6 12. Ne5 $6 Nxe5 13.
dxe5 Nd7 14. f4 f5) 12. Ne5 $1 c6 {Pawn d5 gets protection.} 13. e4 $1 {
White takes the initiative.} Nxe5 14. dxe5 Nxe4 15. Nxe4 dxe4 16. Bc3 $1 Qc8
17. Bxe4 Bf8 $1 {Black prevents e6!} 18. Qc2 Qh3 19. Rd2 Rad8 20. Rfd1 Rxd2 21.
Qxd2 g6 $6 {Suffocation follows.} (21... Re7 22. Qd8 c5 23. Bxb7 Rxb7 {
only loses the control over the open file.}) 22. Qd7 Qxd7 23. Rxd7 Re7 24. Rd8
$1 c5 $6 (24... Rc7 25. a4 Bc8 26. f4 Be6 {occupies the important square e6.})
25. Bxb7 Rxb7 26. f4 {Black suffers from a restriction of his kingside.} h5 27.
h3 Kg7 28. g4 hxg4 29. hxg4 {He threatens f5.} Be7 30. e6+ f6 31. Re8 $1 {
The restraint has worsened.} g5 32. f5 $5 b5 33. b3 b4 34. Be1 a5 35. Rc8 a4
36. Bf2 $5 axb3 37. axb3 Rb5 38. Kg2 Ra5 39. Kf3 {
Black may liberate himself at the cost of material.} Ra3 40. Bxc5 Rxb3+ 41. Ke4
Rc3 42. Rc7 Rxc5 43. Rxe7+ Kf8 44. Rf7+ Ke8 45. Rxf6 b3 46. Rh6 b2 47. Rh8+ $1
Ke7 48. Rb8 Rc2 49. Rb7+ Kd6 50. e7 Re2+ 51. Kd4 Rxe7 52. Rb6+ $1 Kc7 53. Rxb2
{He is going to win a second pawn.} Re1 54. Kd5 Kd8 55. Rb8+ Ke7 56. Rg8 Ra1
57. Rxg5 Ra4 58. Rg7+ Kf6 59. Rg6+ Kf7 60. Ke5 Rb4 61. Rf6+ Kg7 62. g5 Rb5+ 63.
Kf4 Rb4+ 64. Kg3 Rb3+ 65. Kg4 Rb4+ 66. Kh5 Rb1 67. Rd6 Rh1+ 68. Kg4 Rg1+ 69.
Kf4 Rf1+ 70. Ke5 Re1+ 71. Kd5 Rd1+ 72. Kc6 Rc1+ 73. Kd7 Rf1 74. f6+ Kf7 75. g6+
$4 {White misses a simple win in the rook ending.} Kxg6 76. Ke7 Kh7 $4 {
He should move his rook on the f-file.} (76... Rf2 77. f7+ Kg7 {draws.}) 77.
Rd8 Re1+ 78. Kf8 Ra1 79. f7 Rb1 80. Ke8 Re1+ 81. Kd7 Rd1+ 82. Kc7 1-0

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "15"]
[White "Gligoric, Svetozar"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "E95"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nbd7 8. Re1
Re8 9. Bf1 c6 10. d5 c5 11. g3 Rf8 $5 {Black develops slowly.} 12. Nh4 Ne8 13.
a3 h6 14. b4 Kh7 15. Qc2 b6 16. Bd2 Bf6 {It still goes quietly.} 17. Ng2 Ba6
18. Ne3 Nc7 19. Reb1 Qe7 20. a4 $5 (20. b5 Bb7 21. a4 {keeps more advantage.})
20... cxb4 21. Rxb4 Bb7 22. a5 Na6 23. Rbb1 Nac5 24. Nb5 bxa5 25. Bxa5 a6 26.
Nc3 Bg5 27. Na4 Nxa4 28. Rxb7 $2 ({Preferable is} 28. Rxa4 Nc5 29. Raa1) 28...
Nac5 $1 29. Rbb1 Bxe3 30. fxe3 Rfb8 {Julio counters on the queenside.} 31. Bg2
Kg7 32. h4 Rxb1+ 33. Rxb1 Rb8 34. Rxb8 Nxb8 {
The knights are superior to the bishops.} 35. Bb4 $5 Qc7 $1 36. Qa2 h5 $5 37.
Qa3 Nbd7 38. Bf3 $5 Qb6 $1 39. g4 $5 {Desperation.} (39. Qa5 Qxa5 40. Bxa5 Nf6
{loses a pawn.}) 39... hxg4 40. Bxg4 Nf6 41. Bf3 Nd3 $1 42. Bd2 $5 Qb1+ 43. Kg2
Nc5 $1 44. Qb4 Qc2 45. Qc3 Qa2 46. Qa5 $5 Qxc4 47. h5 Nb3 48. Qd8 Nxd2 {
Gligoric kept the lead, despite another loss against Julio Bolbochan..} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "16"]
[White "Eliskases, Erich"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "E99"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5
Ne7 9. Ne1 Nd7 10. Be3 ({Najdorf played} 10. Nd3 {in round 12.}) 10... f5 11.
f3 f4 12. Bf2 g5 13. Nd3 Nf6 14. c5 Ng6 $5 15. Rc1 Rf7 16. Qb3 (16. cxd6 cxd6
17. Nb5 g4 {will draw in Najdorf - Trifunovic (same round).}) 16... g4 $1 17.
fxg4 $5 Nxg4 18. Bxg4 Bxg4 19. Qxb7 {Eliskases has bitten the bait.} f3 $1 20.
Be3 $6 ({Preferable is} 20. g3 $1 Bh3 21. Rfd1 Nf4 $1 22. Qa6) 20... Nf4 21.
Bxf4 exf4 $6 (21... fxg2 $1 22. Kxg2 exf4 {opens the kingside for an attack.})
22. gxf3 Bh3 23. Kh1 $1 {He prevents a mate charge.} Bxf1 24. Rxf1 Bd4 25. e5
$2 {The tables turn.} (25. Qc6 $1 Rb8 26. cxd6 cxd6 27. Nb5 {
charges the centre.}) 25... dxe5 $1 26. Ne2 Rb8 $1 27. Qc6 Qf6 $5 28. Nxd4 exd4
29. d6 $6 {White should exchange the queens.} cxd6 30. Qd5 Kh8 $5 31. cxd6 Rg7
32. d7 $5 Rd8 $5 33. Ne5 $2 (33. Qe5 $1 Qe7 $1 34. Qxe7 Rxe7 35. Nc5 a5 {
also wins for Black.}) 33... Rdxd7 $1 34. Nxd7 Qg6 $1 35. Qa8+ Rg8 36. Qxg8+
Qxg8 37. b3 Qg5 38. Re1 d3 39. Ne5 d2 $1 40. Nf7+ Kg7 41. Rd1 Qh4 42. Kg2 Qe1
$1 {Gligoric won again in the Mar del Plata Variation.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "17"]
[White "Trifunovic, Petar"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "C73"]
[Annotator "JvR"]
[PlyCount "45"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. Bxc6+ bxc6 6. d4 f6 7. Be3 Ne7 8.
Nc3 Rb8 9. Qd3 $5 ({Known is} 9. Qd2) 9... Ng6 $5 ({Not} 9... Rxb2 $6 10. dxe5
fxe5 11. Nxe5 $1 dxe5 $2 12. Qxd8+ Kxd8 13. O-O-O+ $1) ({The alternative is} 
9... exd4 $1 10. Nxd4 c5 11. Nb3 {(Matulovic - Shahar, Netanya 1961).} Ng6) 10.
O-O-O $1 Be7 11. h4 Bd7 $5 12. h5 Nf8 13. Nh4 $5 Qc8 14. Nf5 $1 Bxf5 15. exf5
d5 16. f3 Qb7 17. b3 c5 $4 {Guimard miscalculates.} ({Correct is} 17... h6 $1
18. Ne2 Nd7 {and Black has equalised.}) 18. dxe5 $1 d4 19. h6 $1 Rg8 ({Or} 
19... g6 20. exf6 Bxf6 21. Bf4 dxc3 22. Rhe1+) 20. Qc4 $1 Qb4 21. Qxg8 Qxc3 22.
Kb1 dxe3 23. e6 {Black will be mated soon.} 1-0

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "18"]
[White "Eliskases, Erich"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "B91"]
[Annotator "JvR"]
[PlyCount "110"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. a4
Nc6 9. Bg2 O-O 10. O-O Nb4 11. h3 Be6 $1 (11... Qc7 12. Be3 b6 {
drew in Panov - Rovner, Leningrad 1952.}) 12. f4 Qc8 $5 13. f5 Bc4 $1 {
Pilnik has gained an edge.} 14. g4 h6 15. g5 hxg5 16. Bxg5 Rd8 $1 {
Black prepares an advance in the centre.} 17. Qd2 $2 (17. Kh1 $1 {
prevents ..d5.}) 17... d5 $1 18. exd5 ({The pointe is} 18. Bxf6 Qc5+ 19. Kh1
Bxf6 20. exd5 Nxd5 {and Black has an advantage.}) 18... Nfxd5 19. Nxd5 Bxd5 $2
({Correct is} 19... Nxd5 20. Bxe7 Nxe7) 20. Qc3 $2 {
Both players commit a blunder.} (20. Bxe7 $1 Bxg2 21. Qg5 $1 Bxf1 $2 22. f6 g6
23. Qh6 Bxe2 24. Qg7# {ends the game.}) 20... Bxg2 21. Kxg2 Nd5 22. Qxc8 Raxc8
23. Bxe7 Nxe7 {Black is going to win material in the endgame.} 24. Ng3 ({Or} 
24. c3 Rd2 25. Rf2 Rxb2) 24... Rxc2+ 25. Rf2 Rdd2 26. Rxd2 Rxd2+ 27. Kf3 Rxb2
28. Rd1 Rb3+ 29. Kg2 f6 30. Rd7 Kf8 31. h4 Ke8 32. Rc7 Kd8 33. Rc4 Nd5 34. Kf2
Nf4 35. Ne4 b5 36. axb5 axb5 37. Rc6 b4 38. Ra6 Ra3 39. Rb6 Kc7 $1 40. Rb5 Nd3+
41. Ke2 Kc6 42. Rb8 Nf4+ 43. Kd2 Ra2+ 44. Kd1 Nd5 45. h5 Rh2 46. Rc8+ Kd7 47.
Rb8 Nc3+ 48. Nxc3 bxc3 49. Rb7+ Kd6 50. Rxg7 e4 51. Rg3 c2+ 52. Kc1 Ke5 53. Rc3
Kxf5 54. Rxc2 Rxc2+ 55. Kxc2 Kg5 {Eliskases resigned at last.} 0-1

[Event "Mar del Plata"]
[Site "16"]
[Date "1953.??.??"]
[Round "19"]
[White "Carvalho, Flavio"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "C10"]
[Annotator "JvR"]
[PlyCount "110"]
[EventDate "1953.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 b6 7. Bb5+ c6 8.
Bd3 Bb7 9. Qe2 $5 (9. Be3 {drew in Steiner - Kmoch, Bad Niendorf 1927.}) 9...
Nd7 10. O-O Qc7 11. Bd2 Bd6 12. a4 Nf8 $5 13. a5 $1 Ng6 14. axb6 axb6 15. Rxa8+
Bxa8 16. Ra1 O-O 17. Bxg6 hxg6 18. Bh6 Re8 $5 {The chances are equal.} 19. Qe4
$6 {White will have no success in the attack.} Bb7 20. Qh4 Be7 21. Bf4 Qd7 22.
c3 $2 ({Preferable is} 22. Be3 $1 c5 23. dxc5 Bxf3 24. gxf3 bxc5 25. b3) 22...
c5 $1 23. Be3 Qb5 $1 24. dxc5 $5 (24. Rb1 Qe2 25. dxc5 bxc5 26. Qa4 Rd8 27. Ne1
{defends stubbornly.}) 24... Qxb2 $1 25. Re1 Bxf3 26. gxf3 bxc5 {
Guimard has conquered a pawn.} 27. Qc4 Qb7 28. Kg2 Kg7 29. Qe4 Rb8 30. Rd1 g5
31. c4 Qxe4 32. fxe4 Rb4 $1 33. Rc1 Kg6 {He is going to win the endgame.} 34.
f3 Rb2+ 35. Bf2 f5 36. h3 $5 Bd6 $5 37. Rd1 Bf4 38. exf5+ Kxf5 39. Kf1 Rb3 40.
Kg2 Rb2 41. Kf1 Rc2 42. Bxc5 Rxc4 43. Bf2 Rc3 44. Kg2 Rc2 45. Rd3 e5 $5 46. Kf1
Ra2 47. Rb3 Bd2 48. Rb7 f6 49. Rb6 Bc3 50. Rd6 e4 $1 51. Rc6 Be5 52. fxe4+ Kxe4
53. h4 $5 Kf3 $1 54. Be1 gxh4 55. Bxh4 Rh2 $1 {Black delivers mate or gains a
bishop. Guimard ended an uneven tournament well.   The final standings became:
Gligoric 16/19, Najdorf 141/2, Julio Bolbochan 131/2, Trifunovic 13, Cuellar
Gacharna 121/2, Letelier Martner and Pilnik 111/2, Eliskases  11, Rossetto 101/
2, Guimard 10, Jacobo Bolbochan and Ojanen 91/2, Shocron 9, H.Steiner 81/2,
Maderna and Medina Garcia 71/2, Wexler 61/2, Jauregui Andrade 3, Burgalat and
Carvalho 21/2. Gligoric won Mar del Plata for the second time.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "1"]
[White "Salomon, J."]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "B92"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

{The seventeenth tournament in Mar del Plata was finished in Buenos Aires. It
was the South American zonal event for 1954. 22 men from Argentina, Bolivia,
Brasil, Chile, Paraguay, Peru and Uruguay played in April and May.   The great
talent was the Argentine Oscar Panno. He had become World Junior and Argentine
champion in 1953.} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2
e5 7. Nb3 Be7 8. Bg5 Nbd7 $5 ({Known is} 8... Nxe4 $6 9. Nxe4 Bxg5 10. Nxd6+
Ke7 11. Nxc8+ Qxc8 {and White has an advantage.}) 9. O-O O-O 10. Qd3 Qc7 $5 11.
Bxf6 $2 Nxf6 {Black got a plus.} 12. Rfd1 b5 $1 13. Nd5 $5 Nxd5 14. Qxd5 (14.
exd5 Bd7 {also favours Black.}) 14... Bb7 15. Qd3 Rad8 $1 {
White cannot prevent the liberating move.} 16. c3 d5 $1 17. exd5 Bxd5 18. Qe3
f5 19. Kh1 $2 h6 $5 {Panno plays quietly.} 20. f3 Kh8 21. Rd3 $6 e4 $1 22. fxe4
fxe4 23. Rdd1 Bg5 24. Qg1 e3 $1 25. Rf1 Qb7 26. Nd4 Bh4 27. Rxf8+ Rxf8 28. Bf3
Rxf3 $1 29. Nxf3 Bxf3 30. Qxe3 ({The pointe is} 30. gxf3 Qxf3+ 31. Qg2 Qxg2+
32. Kxg2 e2) 30... Bxg2+ 31. Kg1 Bd5 32. Rd1 Qf7 33. Rxd5 Qxd5 34. b3 Bf6 {
Panno made a fine start.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "4"]
[White "Guimard, Carlos"]
[Black "Benko, Francisco"]
[Result "1-0"]
[ECO "A48"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 c5 4. e3 Bg7 5. Be2 O-O 6. Nbd2 $5 cxd4 7. exd4 d6
8. O-O b6 $5 9. Re1 Bb7 10. c3 Na6 11. a4 Nc7 12. h3 Ne6 13. Bh2 Bh6 14. Bf1
Qc7 15. Nc4 Nd5 16. Ne3 Rac8 17. Ng4 Bg7 18. Qd2 Nf6 19. Nxf6+ Bxf6 20. Qe3 a5
21. Nd2 Bd5 22. Ne4 Bg7 23. Ng5 Nxg5 24. Qxg5 Be6 25. Qd2 Rce8 $5 (25... Qb7 $1
{prevents the next move.}) 26. d5 $1 Bd7 27. Bf4 Bc8 28. Re4 f5 $5 29. Rc4 Qd8
30. Bh6 $1 {Guimard takes the initiative.} Rf7 31. Bxg7 Rxg7 32. b4 $5 Bd7 33.
Rd4 Qc7 34. Rb1 Ra8 35. bxa5 bxa5 36. Bb5 Rb8 37. c4 Bc8 38. c5 $5 Qxc5 $1 ({
Not} 38... dxc5 $2 39. d6 $1 exd6 40. Rxd6) 39. Rc1 Qb6 40. Rdc4 Qd8 41. Rc7
Bb7 $2 ({Right is} 41... e5 $1 42. Qxa5 Rxc7 43. Rxc7 Bb7 $1 {
and the chances are equal.}) 42. Qxa5 $6 (42. Bd7 $1 h5 43. Qxa5 {
wins immediately.}) 42... Bxd5 $6 (42... Ra8 $1 43. Qb4 Bxd5 44. Bd7 Kf7 $1 45.
Qd4 Ba2 {delivers a stubborn defence.}) 43. Ba6 $1 Be6 44. Rc8 $1 {
Guimard gains material.} 1-0

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "5"]
[White "Maderna, Carlos"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "E60"]
[Annotator "JvR"]
[PlyCount "176"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nbd7 7. Qc2 e5 8. Rd1
Re8 9. h3 $5 ({Theory is} 9. Nc3) 9... c6 10. e4 exd4 11. Nxd4 Nc5 12. Nc3 Qe7
13. Re1 Nfd7 14. Be3 Ne5 15. b3 Ned3 16. Red1 Nb4 17. Qd2 a5 18. Rab1 Nba6 19.
Nde2 f5 20. Bg5 Qf7 21. f3 fxe4 22. fxe4 Be5 23. Rf1 Qc7 24. Rf2 Ne6 25. Be3
Nac5 26. Rbf1 Rf8 27. Rxf8+ Nxf8 28. Bd4 Nfe6 29. Bxe5 dxe5 30. Nd1 Qd8 31. Qe3
Nd4 32. Kh2 Be6 33. Nf2 Qd6 34. Rd1 Rd8 35. Qg5 Rf8 36. Qe3 Rd8 37. Ng1 Qe7 38.
Nf3 Nxf3+ 39. Bxf3 Rxd1 40. Bxd1 Qd6 41. Bg4 Bf7 42. Kg2 Qd4 43. Qxd4 exd4 44.
Bd1 b5 45. cxb5 cxb5 46. Kf3 Kg7 47. Kf4 Kf6 48. e5+ Ke7 49. h4 Bd5 50. Kg5
Ne4+ 51. Nxe4 Bxe4 52. Kf4 Bd3 53. a3 b4 54. axb4 axb4 {
The chances in the bishop ending are almost equal.} 55. Bf3 Ke6 56. Bg4+ $2 {
Maderna makes the decisive error.} (56. Be4 $1 Be2 57. Bb7 Bf1 58. Bc8+ Kd5 59.
Bb7+ {forces a draw.}) 56... Bf5 $1 57. Be2 d3 58. Bf3 d2 59. Bd1 h6 60. Ke3
Kxe5 61. Kxd2 Kd4 62. Be2 (62. g4 $5 Be4 63. g5 h5 $1 {also wins for Black.})
62... Be6 63. Bd3 g5 64. hxg5 hxg5 65. Bc2 Bf7 66. Bd1 Ke4 $1 67. Bc2+ Kd4 $5 {
Black postpones the right move.} 68. Bd1 Bd5 69. Bc2 Be6 70. Bd1 Ke4 71. Bc2+
Kf3 $1 {Pilnik goes the right way.} 72. Bd1+ Kxg3 73. Ke3 Kg2 74. Bf3+ (74. Kd4
Kf2 75. Kc5 Ke1 $1 76. Bh5 Bxb3 77. Kxb4 Bd1 $1 {leads to a theoretical win.})
74... Kg1 75. Bd1 Kf1 76. Be2+ Ke1 77. Bc4 Bf5 $5 {
Exchange brings a difficult win for practical play.} 78. Be2 Bc2 79. Bc4 g4 80.
Be6 g3 $1 81. Kf3 Kd2 82. Kxg3 Kc3 83. Kf2 Bxb3 84. Bd7 Bc4 85. Ke3 $5 b3 86.
Bf5 b2 87. Be4 Bb3 88. Bb1 Bc2 {The last pawn will queen soon.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "7"]
[White "Eliskases, Erich"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "A34"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. Nc3 Nf6 3. e4 c5 4. Nf3 Nc6 5. d4 d5 $5 ({Theory is} 5... cxd4 6.
Nxd4 Bb4 7. Nxc6 bxc6 {(Nimzowitsch - Perlis, Barmen 1905).}) 6. cxd5 exd5 7.
exd5 Nxd5 8. Bb5 $1 a6 $6 ({Preferable is} 8... Qe7+ $1 9. Ne2 Qd6 $1 10. O-O
Be7) 9. Bxc6+ bxc6 10. O-O Nxc3 $5 11. bxc3 Be7 $6 (11... Be6 $1 12. Qa4 Be7 $1
13. Qxc6+ Bd7 14. Qe4 O-O {gives a pawn for the development.}) 12. Ne5 $1 Qd5
13. Ba3 O-O $5 14. Re1 $1 {Black will lose the pawn anyway.} Bf6 $5 (14... Re8
15. c4 Qe6 16. Bxc5 Bxc5 17. dxc5 {leads to positional problems for Black.})
15. Bxc5 Rd8 16. Qa4 $1 Bf5 17. c4 $1 Qe6 18. Nxc6 {
White has conquered the centre.} Qd7 19. Rad1 Bc2 20. Qxc2 Qxc6 21. Re3 Rac8
22. Qe2 h6 23. g3 Qa4 24. Ra3 Qc6 25. h4 Re8 26. Re3 Red8 27. Rd2 Qa4 28. Ra3
Qc6 29. Kh2 Re8 30. Qf3 Qe6 31. Rc2 Qe1 32. Re3 Rxe3 33. Qxe3 Qb1 34. Qc1 Qb7
35. Re2 Qf3 36. Qe3 Qc6 37. Qe4 Qa4 38. Qc2 Qc6 39. Qf5 Rd8 40. Qe4 Qa4 41. Qd3
Qc6 42. Re4 Rc8 43. a3 a5 44. Rf4 g5 45. hxg5 hxg5 46. Rf5 Kg7 47. Qf3 Rh8+ 48.
Kg2 Qe6 $1 49. Qd5 $1 Qe1 50. Rxg5+ $1 {He refutes the black counteraction.}
Bxg5 51. Qxg5+ Kh7 52. Qh5+ Kg8 53. Qg4+ Kh7 54. d5 $1 Re8 55. d6 Re6 56. Bd4
f6 57. d7 {
Eliskases did not lose a game in the zonal tournament, but made too many draws.
} 1-0

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "7"]
[White "Rossetto, Hector"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "B30"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. e5 Nd5 5. Nc3 $5 (5. O-O {
drew in Thomas - Tyler, Hastings 1937.}) 5... e6 6. O-O Be7 7. d4 Nxc3 8. bxc3
O-O 9. Qe2 d5 10. exd6 Qxd6 $5 11. Rd1 $5 cxd4 12. cxd4 b6 13. a4 Qc7 14. Qe4
Bb7 15. Bf4 $2 ({Better is} 15. Bd3 $1 g6 {and now} 16. Bf4) 15... Nb4 $1 {
Black shows tactical wit.} 16. Qe5 $6 (16. Qxh7+ $1 Kxh7 17. Bxc7 Rac8 18. Bf4
Bxf3 19. gxf3 Nxc2 20. Rab1 {avoids the loss  of a pawn.}) 16... Qxe5 $6 {
He could have captured pawn c2.} 17. dxe5 Rfd8 $5 {He does not take c2 again.}
18. c3 Nd5 19. Bd2 Rac8 20. c4 $2 (20. Rdc1 $1 Bc5 21. Bg5 {defends well.})
20... Nb4 $1 21. Bxb4 Bxb4 {Black threatens ..a6. White has to give a pawn.}
22. Bd7 Rxc4 23. h3 Kf8 24. Bb5 Rcc8 25. Rac1 Rxc1 26. Rxc1 Bc5 27. Kf1 Ke7 28.
Ke2 f6 29. Bd3 h6 30. a5 f5 31. h4 g6 32. Nd2 Rc8 33. axb6 Bxb6 34. Rb1 Bd5 35.
g4 $5 fxg4 36. Bxg6 Rf8 37. Ne4 Bxe4 38. Bxe4 Rxf2+ 39. Kd3 Rh2 40. Rh1 Rxh1
41. Bxh1 h5 {Panno has two distant passed pawns and wins easily, despite the
bishops of a different colour.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "12"]
[White "Perez Alcocer, Jose"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "C00"]
[Annotator "JvR"]
[PlyCount "132"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. d3 Nc6 3. Nf3 Nf6 4. g3 d5 5. Nbd2 e6 6. Bg2 Be7 7. O-O O-O 8. c3
b6 9. Qa4 $5 ({Known is} 9. Re1) 9... Qd7 10. Re1 Rd8 11. Nf1 dxe4 12. dxe4 Ne5
$1 13. Qxd7 Nfxd7 $1 {Black has a positional plus.} 14. Rd1 Ba6 15. Ne1 c4 $1 {
He creates an outpost on d3.} 16. h3 $6 {Perez spoils time.} Nc5 17. Be3 Na4 $1
18. Rxd8+ Rxd8 19. Rb1 {White defends passively.} Bc5 20. f4 $5 Nd3 $1 21. Nxd3
cxd3 22. Bxc5 bxc5 23. Ne3 d2 $1 24. Bf1 Bb7 25. Bg2 c4 $2 (25... Rd3 $1 26.
Kf2 f5 27. Bf1 Rd8 {keeps the advantage.}) 26. Kf2 Nc5 27. e5 $2 {
He misses the draw.} ({Right is} 27. Rd1 $1 Nd3+ 28. Ke2 Nc1+ 29. Kf2 Nd3+ {
and perpetual check.}) 27... Nd3+ 28. Kf1 Bxg2+ 29. Kxg2 Nc1 30. Nd1 {
The rook cannot go to d1.} g5 31. b4 cxb3 $2 {He should not open the a-file.}
32. axb3 gxf4 33. gxf4 Rd3 34. Ra1 $1 {White uses the opportunity to counter.}
Ne2 35. Rxa7 Nxf4+ 36. Kf2 Nxh3+ 37. Kf1 Nf4 38. Kf2 Nh3+ 39. Ke2 Nf4+ 40. Kf2
Rh3 41. Rd7 Ng6 42. Kg2 $5 Rh5 $5 43. Rxd2 Nxe5 44. Kg3 Kf8 45. Ne3 Ke7 46. Rd1
f5 47. Ng2 Rg5+ 48. Kf2 h5 49. Nf4 $2 {
He misses the last chance to advance on the queenside.} h4 50. Rh1 Rg3 $1 51.
Rxh4 Rxc3 52. Rh7+ Kd6 53. Rh3 Ng4+ 54. Ke2 Rc2+ 55. Kd1 Ra2 56. Ke1 e5 57.
Rd3+ Ke7 58. Nd5+ Ke6 59. Nc7+ Kf6 60. Rd6+ Kg5 61. Ne6+ Kh4 $1 62. Rd3 f4 63.
Rf3 Nh2 64. Rf2 Ra1+ 65. Kd2 Kg3 66. Re2 Ra2+ {Six Argentinians contested the
four qualification places: Panno, Najdorf, Pilnik, Guimard, Eliskases and
Rossetto.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "14"]
[White "Panno, Oscar"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "D46"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

{The young and the old star meet.} 1. c4 e6 2. Nf3 d5 3. d4 c6 4. Nc3 Nf6 5. e3
Nbd7 6. Bd3 Bb4 7. a3 Ba5 8. O-O O-O 9. Qc2 Bc7 10. Bd2 a6 11. Rfe1 $5 {
Black has a crammed position.} e5 $2 {Najdorf makes the wrong liberating move.}
({Better is} 11... dxc4 $1 12. Bxc4 b5 13. Bd3 c5) 12. cxd5 cxd5 13. e4 $1 exd4
$5 (13... dxe4 14. Nxe4 Nxe4 15. Bxe4 Nf6 16. Bg5 $1 {also wins for White.})
14. Nxd5 Nxd5 15. exd5 Nf6 16. Bg5 $1 {White threatens Bxh7+.} Qd6 17. Bxf6
gxf6 18. Re4 $6 (18. Bxh7+ $1 Kg7 19. Rad1 {
combines a material gain with a continuation of the attack.}) 18... Bf5 19.
Rxd4 {White's extra pawn is blockaded.} Bg6 20. Rd1 Rfe8 21. h4 Bb6 22. Bxg6
hxg6 23. Rc4 Re7 24. Re4 Rae8 25. Rxe7 Rxe7 26. Kf1 Kg7 27. g3 a5 28. Kg2 Bc5
29. h5 $1 b6 30. hxg6 fxg6 31. Qc4 Re8 32. Rh1 $1 Rh8 33. Rxh8 Kxh8 34. a4 Qd7
35. Qe4 Kg7 36. b3 Kf7 37. Qd3 Qg4 38. Qc4 Qf5 39. g4 $1 Qb1 $2 (39... Qd7 40.
Nd2 Kf8 {proceeds the passive defence.}) 40. d6+ $1 Kg7 {
Panno showed his extra class.} ({The pointe is} 40... Kg7 41. d7 Qd1 42. Qd4 $1
Bxd4 43. d8=Q {and White wins a piece.}) 1-0

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "19"]
[White "Najdorf, Miguel"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "E07"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

{Panno, Najdorf, Pilnik and Eliskases occupied the qualification places, when
the round began.} 1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. d4 Nbd7
7. Nc3 c6 8. b3 b6 9. Bb2 Bb7 10. e3 Rc8 11. Qe2 Qc7 12. Rac1 Qb8 13. Ne5 $5 (
13. Rfd1 Rfd8 14. Ne5 {was played in Najdorf - Foltys, Amsterdam 1950.}) 13...
Nxe5 14. dxe5 Nd7 15. f4 Ba6 16. Rfd1 Nc5 17. Bf1 dxc4 18. bxc4 Rfd8 19. Rd4
Rc7 $5 20. Rcd1 Rcd7 21. Ne4 Qc7 22. Nd6 Nb7 23. Nxf7 $5 {
Najdorf starts a great adventure.} (23. Nb5 Bxb5 24. cxb5 Bc5 {
leads to equality.}) 23... Rxd4 24. exd4 Kxf7 25. Qh5+ Kg8 26. Bd3 g6 $1 27.
Bxg6 $1 Bf8 $1 (27... hxg6 $6 28. Qxg6+ Kf8 29. f5 $1 {
brings a strong attack for two pieces.}) 28. Be4 $5 Qf7 $5 29. Qe2 Rd7 $5 ({
More solid is} 29... Na5 $1) 30. f5 $5 Nd8 $2 ({Better is} 30... exf5 31. Bd3
Qe6 32. Rf1 Rf7 {and Black defends his kingside well.}) 31. Rf1 Qe8 32. Rf4 Bh6
33. Rh4 $6 Qf8 $2 (33... Bg5 $1 34. Rg4 Rg7 35. f6 h5 $1 36. fxg7 hxg4 37. Qxg4
Be3+ 38. Kh1 Qf7 {gains an edge.}) 34. fxe6 Nxe6 35. Qg4+ Kh8 $2 (35... Ng5 $1
36. Qxd7 Bc8 37. Ba3 $1 Bxd7 38. Bxf8 Bxf8 39. d5 Nxe4 40. Rxe4 Ba3 {
offers a stubborn resistance.}) 36. Qxe6 Be3+ 37. Kg2 Rf7 38. Qg6 Rf2+ 39. Kh3
{Najdorf won another great attacking game. The top six became: Panno 161/2/19,
Najdorf 15, Pilnik, Eliskases and Guimard 141/2, Rossetto 131/2.} 1-0

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "20"]
[White "Bauza, Lorenzo"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "D05"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

1. d4 e6 2. Nf3 Nf6 3. e3 c5 4. Bd3 Nc6 5. O-O d5 6. b3 Qc7 7. a3 $5 e5 8. dxe5
Nxe5 9. Nxe5 Qxe5 10. Ra2 $5 Bd6 11. f4 Qe7 12. Bb5+ $6 ({Preferable is} 12. c4
$1 dxc4 13. bxc4) 12... Kf8 $1 {
Guimard makes a sharp move, because he has to play for a win.} 13. Nc3 a6 14.
Be2 d4 $1 15. exd4 cxd4 16. Na4 $1 b5 $6 17. Nb2 $6 (17. Nb6 $1 Bc5 $5 18. Bf3
Bxb6 19. Bxa8 Ng4 {leads to a hard fight.}) 17... h5 $5 18. a4 Nd5 19. Bf3 $6 (
{Correct is} 19. Bd2 $1 {and Black cannot start an attack.}) 19... Nc3 $1 20.
Qd3 $2 (20. Qd2 {protects f4.}) 20... Nxa2 21. Bxa8 Nxc1 22. Rxc1 Bxf4 {
He has won a pawn.} 23. Rf1 Be3+ $5 24. Kh1 Rh6 $5 25. axb5 Rf6 26. Rxf6 $5
Qxf6 27. Bf3 Bf5 28. Qc4 axb5 29. Qxb5 g5 30. Nd3 g4 31. Be2 Kg7 32. Qa5 h4 $1
33. Qe5 Qxe5 34. Nxe5 Bxc2 35. Nxg4 Bf4 $1 {Black threatens ..d3.} 36. Nf2 Bxb3
37. Nd3 Be3 38. h3 f5 39. g3 $5 hxg3 40. Kg2 f4 {Guimard would win his last
eight games! The top became at the end of the penultimate round: Panno 17,
Najdorf 16, Pilnik and Guimard 151/2, Eliskases 15, Rossetto 14.} 0-1

[Event "Mar del Plata/Buenos Aires"]
[Site "17 (zt)"]
[Date "1954.??.??"]
[Round "21"]
[White "Pilnik, Herman"]
[Black "Castillo Larenas, Mariano"]
[Result "1-0"]
[ECO "A21"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1954.04.??"]
[SourceDate "1999.07.01"]

{Najdorf, Guimard and Eliskases won in the last round. A spectacle became the
game by Pilnik.} 1. c4 e5 2. Nc3 Nc6 3. g3 d6 4. Bg2 f5 5. d3 Nf6 6. Nf3 Be7 7.
O-O O-O 8. Nd5 Nxd5 9. cxd5 Nb8 10. Bd2 c5 11. b4 $5 (11. dxc6 Nxc6 12. Ne1 $6
{was played in Kasparian - Goglidze, Moscow 1931.}) 11... cxb4 12. Bxb4 Na6 13.
Ba3 Rb8 14. Rc1 b5 15. Bb2 Bf6 16. Nd2 Nc5 17. Nb3 Na4 $1 18. Ba1 Bd7 19. Qd2
b4 $1 {Black has the initiative on the queenside.} 20. Rc2 Qb6 21. Rfc1 Rfc8
22. Rc4 a5 23. e3 Rxc4 24. Rxc4 Bb5 25. Rc1 Nc5 $5 26. Nxc5 dxc5 27. e4 fxe4
28. Bxe4 Bd7 29. Qe3 Rc8 30. Qf3 a4 31. Qh5 $1 {White counters on the kingside.
} h6 32. Qg6 {The chances are about equal.} Qd6 33. d4 $2 c4 $1 {
This attack could become winning.} 34. Qh7+ $5 Kf8 35. dxe5 Bxe5 36. Bxe5 Qxe5
37. Re1 $5 {If Castillo prevails, Eliskases qualifies.} c3 $2 (37... b3 $1 38.
axb3 cxb3 39. d6 Bh3 $1 {wins for Black.}) 38. Re3 $1 b3 {Black overstepped
the time limit and Pilnik went to the next round.   The final standings became:
Panno 171/2/21, Najdorf 17, Pilnik and Guimard 161/2, Eliskases 16, Rossetto
15, Sanguinetti, Wexler and Dodero 111/2, Shocron 10, Schroeder and Maderna 91/
2, Cruz 9, Benko and Castillo Larenas 81/2, Bauza and De Souza Mendez 71/2,
Perez Alcocer 7, Humarez Estrada 61/2, Estrada Degrandi and Salomon 5,
Jauregal Andrade 41/2.   Panno, Najdorf, Pilnik and Guimard qualified. All
four participated in the interzonal Goteborg 1955. Panno and Pilnik went on to
Amsterdam 1956. Smyslov became the challenger, eventually.} (38... b3 $1 39.
axb3 axb3 40. d6 $1 Bg4 41. Bg6 Qd5 42. Re4 Qd1+ 43. Kg2 Qf3+ 44. Kg1 Qd1+ {
leads to perpetual check.}) 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "1"]
[White "Ivkov, Borislav"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D53"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

{Tournament eighteen in Mar del Plata happened from 3 until 30 iii 1955.
Sixteen men played in Hotel Provincial (next to the Casino Central). The five
Europeans were: Ivkov and Gligoric (Yugoslavia), Pachman (Czechoslovakia),
Szabo (Hungary) and Toran (Spain). Ivkov was the young talent.} 1. d4 Nf6 2.
Nf3 d5 3. c4 e6 4. Nc3 Be7 5. Bg5 h6 6. Bh4 dxc4 7. e3 a6 8. a4 c5 $5 9. Bxc4
Nc6 10. O-O cxd4 11. exd4 O-O 12. Re1 Bd7 13. Qe2 Nd5 14. Bxe7 Nxc3 $6 ({
More solid is} 14... Ncxe7 $1 15. Nxd5 Nxd5 16. Bxd5 exd5) 15. bxc3 Nxe7 16.
Ne5 Nd5 17. Qf3 Be8 $5 18. Reb1 $5 b5 $6 ({Preferable is} 18... b6 $1 19. Bxd5
exd5) 19. axb5 axb5 20. Bxd5 exd5 {Black has the bad bishop.} 21. Nd3 Rc8 22.
Nb4 Bd7 $1 23. Re1 Be6 24. h3 Rc4 25. Re5 Qd6 26. Rae1 Rd8 27. R1e3 Ra8 28.
Nxd5 Bxd5 $2 (28... Ra1+ $1 29. Kh2 b4 $1 30. Qf4 bxc3 31. Rxc3 Rxc3 32. Nxc3
f6 33. Re4 Qxf4+ 34. Rxf4 Rc1 35. Rf3 Bc4 {
leads to sufficient compensation for the pawn.}) 29. Qxd5 Qxd5 30. Rxd5 b4 31.
cxb4 Rxb4 32. Rd7 $1 Ra6 $5 33. Rf3 $1 Rf6 34. Rd8+ Kh7 35. Rxf6 gxf6 36. Kh2 {
Ivkov has material and positional advantages in the rook ending.} Rb3 37. f3
Kg6 38. Kg3 Kf5 39. Rd5+ Ke6 40. Rh5 $1 Rd3 41. d5+ $1 Rxd5 42. Rxd5 {
White wins the pawn ending.} 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "2"]
[White "Najdorf, Miguel"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "A07"]
[Annotator "JvR"]
[PlyCount "140"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O c6 6. d3 d5 7. Nbd2 Re8 8. e4
$5 dxe4 9. dxe4 Nfd7 10. Nb3 a5 11. Qe2 a4 12. Nbd4 e5 13. Nc2 Nc5 14. Rd1 Nbd7
15. Bd2 Qc7 16. Bc3 Nf6 17. Nfe1 Bg4 18. f3 Be6 19. Ne3 Nfd7 20. Kh1 Bh6 21.
N1c2 f6 22. Qf1 Bg7 23. Bh3 Nf8 24. Bxe6+ Nfxe6 25. Rd2 Rad8 26. Rad1 h5 27. h4
Bh6 28. Kg2 Kf7 29. Qe2 Qb6 30. Rxd8 Rxd8 31. Rxd8 Qxd8 32. Qd1 Nd4 {
Black has the initiative.} 33. Nf1 Nce6 34. Nb4 $5 Qa8 35. a3 Qa7 36. Nd2 Qc5
37. Nd3 Qa7 38. Nb4 Ke7 39. Nb1 Kf7 40. Bd2 Bxd2 41. Qxd2 $6 ({Preferable is} 
41. Nxd2 Nc5 42. Nf1 Qa5 43. Ne3) 41... Qc5 42. Qd3 Qe7 $6 (42... g5 $1 43.
hxg5 h4 $1 {attacks.}) 43. Qe3 Qc5 44. Nd2 Kg7 45. Qd3 Qb6 46. Qe3 c5 47. Nd3
Nb3 48. Nf2 Nc1 49. Nd1 Nd4 50. Nf1 Nce2 51. Qd3 g5 $1 52. hxg5 fxg5 53. Nfe3
h4 $1 54. Nf5+ Kg6 55. Nxd4 Nxd4 56. Qe3 Qe6 $1 {
Panno exerts a lot of pressure in the queen plus knight ending.} 57. gxh4 $2 {
Najdorf makes a careless exchange.} ({The pointe is} 57. Qd3 $2 h3+ $1 58. Kh2
g4 59. fxg4 Qxg4 60. Kh1 Nf3 61. Qd6+ Kh5 62. Qf8 Ng5 63. Qh8+ Kg6 64. Qe8+ Kf6
65. Qd8+ Kg7 {and Black wins.}) (57. Nf2 $1 Qxc4 58. Ng4 Qc2+ 59. Kh3 hxg3 60.
Nxe5+ Kh5 61. Qg1 $1 Qxb2 62. Qxg3 {fights for survival.}) 57... gxh4 58. Nf2
Kh5 $1 59. Nh1 $6 (59. f4 $5 Qxc4 60. fxe5 Qg8+ $1 61. Kh2 Qg5 62. Qxg5+ Kxg5 {
leads to a won knight ending for Black.}) 59... Qxc4 60. f4 Qg8+ 61. Kf2 exf4
62. Qxf4 Qg1+ $1 63. Kxg1 Ne2+ 64. Kf2 Nxf4 65. Ke3 Kg5 66. Nf2 h3 67. Kf3 h2
68. Kg3 Nd3 69. Nh3+ Kf6 70. Kxh2 Ke5 {
Panno is going to capture pawns on the queenside.} 0-1

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "3"]
[White "Ivkov, Borislav"]
[Black "Bauza, Lorenzo"]
[Result "1-0"]
[ECO "B21"]
[Annotator "JvR"]
[PlyCount "37"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 Nd7 $5 ({Theory is} 5... Nc6
6. Bc4 e6) 6. Bc4 e6 7. Bf4 e5 $4 {Black allows a devastating attack.} (7...
Qb6 8. O-O Ngf6 {defends well.}) 8. Qb3 $1 d5 $5 ({The pointe is} 8... exf4 9.
Bxf7+ Ke7 10. Qe6#) 9. Bxd5 Nc5 10. Bxf7+ Ke7 11. Bg5+ Nf6 12. Nd5+ $1 (12. Qc4
{would be fine, but Ivkov finds a nice finish.}) 12... Kxf7 13. Nxe5+ Ke8 ({Or
} 13... Kg8 14. Ne7#) 14. Nxf6+ $1 Qxf6 15. Qb5+ $1 Bd7 16. Nxd7 Nd3+ (16...
Qxg5 17. Nxc5+ Kf7 18. Qxb7+ {brings a winning attack.}) 17. Qxd3 Qxg5 18. Nxf8
Rxf8 19. O-O {Ivkov won in the style of the old Calabrians.} 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "4"]
[White "Pachman, Ludek"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B24"]
[Annotator "JvR"]
[PlyCount "38"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nc3 d6 3. d3 Nc6 4. g3 Nf6 5. Bg2 Bg4 6. Nge2 Nd4 7. O-O Nf3+ $1 (
7... Bf3 8. Be3 e5 $6 9. Bxf3 Nxf3+ 10. Kg2 Nd4 11. Bg5 $1 {
favoured White in Illgen - Osterwald, Bielefeld 1950.}) 8. Kh1 $2 ({Better is} 
8. Bxf3 $1 Bxf3 9. d4 e5 10. Qd3) 8... h5 $1 9. h3 e5 $1 {Najdorf attacks.} 10.
Nd5 $6 ({The pointe is} 10. hxg4 $2 hxg4+ 11. Bh3 Rxh3+ 12. Kg2 Rh2#) (10. Be3
$1 Qd7 $5 11. Nc1 h4 12. Bxf3 hxg3 13. Kg2 Bxh3+ 14. Kg1 Bxf1 15. Kxf1 {
defends courageously.}) 10... Nxd5 11. exd5 Qd7 12. Nc3 $5 Qf5 $1 13. Be3 h4 $1
14. Ne4 (14. hxg4 hxg3+ 15. Bh3 Qxg4 {mates quickly.}) 14... Be7 15. c4 $5 hxg3
$1 16. fxg3 Rxh3+ $1 17. Bxh3 Qh5 $1 18. Qa4+ Kf8 19. Rxf3 Qxh3+ {
Najdorf crushed another victim.} 0-1

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "4"]
[White "Wexler, Bernardo"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "E53"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nbd7 8. a3
Ba5 9. Qc2 a6 10. Rd1 $5 cxd4 11. exd4 dxc4 12. Bxc4 b5 13. Ba2 $6 Qc7 $1 14.
b4 Bb6 15. Bb2 Bb7 16. Qe2 Qf4 $1 {Szabo takes the initiative.} 17. Rd3 $6 (17.
Qd2 Qxd2 18. Rxd2 {almost equalises.}) 17... Rae8 18. Re1 e5 $1 19. Bc1 $1 ({
Not} 19. dxe5 $2 Nxe5 20. Nxe5 Rxe5 21. Qxe5 $2 Qxf2+ 22. Kh1 Bxg2#) 19... Qf5
20. Qd1 $2 {Szabo gets the chance to start a violent action.} (20. Re3 $1 Bxd4
21. Bb1 $1 Qg4 22. h3 Bxf3 23. Rxf3 Qh4 24. Bd2 {defends well.}) 20... exd4 21.
Ne2 Ne5 $1 22. Nxe5 Rxe5 23. Rf1 Rd8 24. Bb1 Qg4 25. f3 Qe6 26. Ng3 Re8 27. Bd2
h5 28. f4 Qc6 29. Rdf3 d3+ 30. Kh1 Rd5 31. Re1 h4 32. Nf1 Ng4 $1 33. Ne3 Nxe3
34. Bxe3 Bxe3 {Szabo scored his fourth win.} (34... Bxe3 35. Rexe3 Rxe3 36.
Rxe3 Rc5 $1 37. Re8+ Qxe8 38. bxc5 Qe2 {ends the game.}) 0-1

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "5"]
[White "Ivkov, Borislav"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]
[ECO "C90"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. Nf1 Bd7 13. Ne3 Rfc8 $2 {
He defends poorly.} ({Known is} 13... Rad8) 14. dxe5 dxe5 15. Nd5 $1 Qd6 $5 (
15... Nxd5 $6 16. exd5 f6 17. Nh4 $1 g6 18. Bxg6 $1 hxg6 19. Nxg6 {
wins for White.}) 16. Nxf6+ gxf6 {White has forced a weakening.} 17. Qe2 b4 $2
{Black neglects the kingside.} (17... Bg4 $1 {prevents the next move.}) 18. Nh4
$1 Kh8 19. Qh5 $1 Rg8 20. Nf5 Bxf5 21. exf5 Rad8 22. Re4 $1 {
He threatens Qxh7+! and mate in three.} Rg7 23. Bh6 Rdg8 24. Bxg7+ Rxg7 25. Rd1
Qc6 26. Rg4 {Ivkov started by five wins.} 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "5"]
[White "Najdorf, Miguel"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D54"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Rc1 h6 7. Bh4 b6 8. cxd5
Nxd5 9. Nxd5 exd5 10. Bxe7 Qxe7 11. Be2 Qb4+ 12. Qd2 Qxd2+ 13. Kxd2 c6 14. Nf3
{White has the better endgame.} Bb7 $5 (14... Bg4 {
was played in Petrosian - Beilin, Moscow 1950.}) 15. Ne5 $1 Rc8 16. b4 a5 $2 {
Black allows a direct attack.} ({Preferable is} 16... b5) 17. b5 $1 c5 18. a4
$5 (18. dxc5 $1 bxc5 19. Bh5 g6 20. Bf3 {gains a great positional advantage.})
18... Re8 19. Bg4 Rxe5 $5 {Desperation.} (19... c4 $5 20. Rhe1 f6 21. Ng6 Kf7
22. Bh5 Rd8 23. e4 $1 {also wins for White.}) 20. dxe5 Kf8 21. f4 Ke7 22. Rhd1
Nd7 23. Ke2 Rd8 24. Rd2 Nf8 25. Rcd1 Ne6 26. Bf3 Nc7 27. h4 g5 28. hxg5 hxg5
29. f5 Rh8 30. g4 f6 31. e6 Kd6 32. Rh1 Rxh1 33. Bxh1 c4 34. Bxd5 $1 c3 $5 35.
Bxb7+ $5 cxd2 36. Kxd2 Ke7 37. Bc6 Kd6 38. Kd3 Ke7 39. Kd4 Kd6 40. e4 {
Pilnik has been outmanoeuvred.} 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "6"]
[White "Gligoric, Svetozar"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "D25"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 g6 5. Bxc4 Bg7 6. O-O O-O 7. Nc3 Nfd7 8.
Be2 $5 Nc6 $6 {Rossetto weakens his centre.} ({Slightly better is} 8... Nb6 $5
{(Gligoric - Westerinen, Havana 1967).}) 9. e4 $1 (9. d5 $5 Nce5 10. Nxe5 Nxe5
11. f4 Nd7 12. e4 {will be played in Reinhardt - Rossetto, Buenos Aires 1955.})
9... Nb6 10. d5 Ne5 11. Nxe5 Bxe5 12. a4 a5 13. Bh6 Re8 14. f4 Bh8 15. f5 $1
Nd7 $5 16. Qe1 c6 17. Qf2 Bf6 $5 18. Be3 Rf8 $5 19. Rac1 Bg7 $5 20. Qg3 $5 Be5
21. Qh3 Nf6 $1 22. Rfd1 Qe8 $6 {He makes a simple oversight.} ({More useful is
} 22... Bd7) 23. Bh6 cxd5 $2 {Black panics.} (23... Bd7 24. dxc6 Bxc6 25. Bxf8
Qxf8 {defends properly.}) 24. Nxd5 Nxe4 25. Bb5 $5 Qd8 $2 26. Qh4 $1 Nf6 27.
Nxf6+ Bxf6 28. Rxd8 Rxd8 29. Bg5 Bxb2 30. fxg6 hxg6 31. Rf1 Be6 32. Bxe7 Rd2
33. Bg5 Rd4 34. Qf2 Rd5 35. Qxb2 Rxg5 36. Qf6 Rd5 37. Qe7 Rc8 38. Be8 {
Gligoric attacks the king.} 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "9"]
[White "Pilnik, Herman"]
[Black "Dodero, Emilio"]
[Result "1-0"]
[ECO "C02"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 a5 7. Bd3 f5 $5 ({
Theory is} 7... Bd7) 8. exf6 $5 Nxf6 9. O-O cxd4 $6 10. cxd4 $1 {
The queen's knight and bishop will be able to develop well.} Be7 11. Nc3 O-O
12. Bg5 $1 Kh8 ({Not} 12... Qxb2 $4 13. Na4) 13. Bc2 Bd7 14. Re1 Qc7 $5 15. Bh4
$5 Ng8 $5 16. Bg3 $5 Qd8 $5 {Both sides have made a number of passive moves.}
17. Qd3 g6 18. Ne2 Qe8 19. Nf4 $1 Qf7 20. Qe3 Bf6 21. h4 {
Troops take positions for the attack on the king.} Nxd4 $2 {
The attempt to liberate his game fails.} 22. Nxd4 e5 23. Nxg6+ $1 hxg6 24. Bxe5
{White has gained a pawn.} Rae8 25. Nf3 Qg7 26. Qd4 Rc8 27. Bd3 Bxe5 28. Nxe5
Bf5 29. Bxf5 Rxf5 30. Nxg6+ Kh7 31. Qxg7+ Kxg7 32. Ne7 Nxe7 33. Rxe7+ Kg6 34.
Rae1 d4 35. Rxb7 Rd8 36. g4 Rf6 37. Ree7 Rfd6 38. Rf7 d3 39. f4 $1 d2 40. h5+ {
Pilnik mates on the next move.  Najdorf and Szabo led half-a-point before
Ivkov and Panno.} 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "10"]
[White "Rossetto, Hector"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "D38"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Bg5 Bb4+ 5. Nc3 h6 6. Bd2 c5 $5 7. e3 O-O 8.
cxd5 exd5 9. a3 Bxc3 10. Bxc3 Ne4 11. Bd3 Nc6 12. Qc2 Re8 13. dxc5 Nxc3 14.
Qxc3 d4 $1 15. Qd2 Bg4 $1 {Black has the initiative.} 16. Be2 $2 (16. O-O-O $1
Qc7 17. Bb5 dxe3 18. fxe3 {defends well.}) 16... dxe3 17. Qxd8 Raxd8 18. O-O $2
{The king should remain in the centre.} ({Better is} 18. Rd1 $1 Rxd1+ 19. Kxd1
Rd8+ 20. Ke1 {and White might survive.}) 18... Bxf3 19. gxf3 ({Or} 19. Bxf3 e2
$1 20. Rfe1 Nd4) 19... Rd2 20. Bb5 e2 $1 21. Rfe1 Rxb2 22. Bxc6 bxc6 23. Rac1
Rd8 24. Kg2 Rd4 25. f4 Rxf4 26. Rc3 Rf5 27. Re3 Rxc5 28. Re8+ Kh7 29. R1xe2
Rxe2 30. Rxe2 {Black has two extra pawns in the rook ending.} Kg6 31. Re7 Ra5
32. Rc7 Ra6 33. f3 Kf6 34. Kg3 h5 35. h4 g6 36. Kf4 Kg7 37. Kg3 Kf6 38. Kf4 Kg7
39. Kg3 Rxa3 40. Rxc6 a5 41. Ra6 a4 (41... a4 42. Kg2 Ra1 43. Rb6 a3 44. Ra6 a2
45. Kh2 Kf8 46. Ra7 Ke8 47. Kg2 Kd8 48. Kh2 Kc8 49. Kg2 Kb8 {
leads to a lengthy win by Black.}) 0-1

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "11"]
[White "Toran Albero, Roman"]
[Black "Idigoras Guisasola, Gregorio"]
[Result "1-0"]
[ECO "E81"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Bg5 c5 7. d5 Re8 8. Qd2 a6
9. g4 $5 {Toran has great plans.} ({Usual is} 9. Nge2) 9... b5 $6 ({
Preferable is} 9... Nbd7 $1 10. h4 h5 $1 11. Bxf6 $6 Nxf6 $1) 10. cxb5 axb5 11.
Bxb5 Bd7 12. Bc4 Bc8 $5 13. h4 $1 {He begins a strong attack.} Ba6 $5 ({
The pointe is} 13... h5 $6 14. Bxf6 $1 Bxf6 $6 15. gxh5 gxh5 16. Nge2 {
and White wins.}) 14. Bxa6 Rxa6 $5 15. h5 $1 Nbd7 16. hxg6 fxg6 17. Qh2 $5 Nf8
$5 {Black remains passively.} 18. Nge2 Ra7 19. Rd1 Rb7 20. Rd2 Qa5 21. Bh6 $1
e6 $6 (21... Bxh6 $1 22. Qxh6 Reb8 23. b3 c4 {starts a counteraction.}) 22.
Bxg7 Kxg7 23. O-O $6 {Pawn d6 could be captured.} exd5 24. exd5 Re5 25. Nf4
Rbe7 $2 (25... c4 $1 {prevents the next move.}) 26. Nd3 $1 Re3 27. Qxd6 c4 28.
Nf4 g5 29. Ne6+ Kf7 30. Nxg5+ Kg7 31. Ne6+ Kf7 32. Nxf8 Qa7 33. Kg2 Nxd5 34.
Qxd5+ Kxf8 35. Ne4 Qc7 36. Qd8+ {Ivkov and Najdorf joined the lead.} 1-0

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "13"]
[White "Panno, Oscar"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "A38"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c5 7. d3 Nc6 8. Rb1
$5 d5 9. cxd5 Nxd5 10. Bd2 b6 11. Qa4 Bb7 12. Qh4 Nd4 13. Nxd4 cxd4 14. Ne4 Nf6
15. Bg5 Bd5 16. a3 Re8 17. Rbc1 Qd7 18. Qf4 $5 Nxe4 19. dxe4 $1 e5 $1 20. Qf3
Be6 21. Qd3 b5 22. Bd2 a5 $1 23. Rfd1 a4 24. Bb4 Bb3 {
Black has the initiative on the queenside.} 25. Re1 Rac8 26. Qd2 Rc4 27. Bf1 $6
{White hesitates.} Rec8 28. e3 $5 Rc2 $1 29. Rxc2 Rxc2 30. Qd3 Rxb2 31. Qxb5
Qxb5 32. Bxb5 Bc2 $5 (32... Bf8 $1 33. Bxf8 Kxf8 34. exd4 exd4 {
leads to a hopeless endgame for White.}) 33. Re2 Rb1+ 34. Kg2 Bxe4+ 35. f3 Bd5
36. exd4 Rb3 $2 (36... Rxb4 $1 37. axb4 a3 {wins for Black.}) 37. Rc2 h5 38.
Bxa4 $2 {Probably the players lacked time.} (38. dxe5 $1 Rxf3 $5 39. Rc5 Bb7
40. Bc6 {draws.}) 38... Rxf3 39. Rc5 Rxa3+ $1 40. Rxd5 Rxa4 41. Bc5 exd4 {
Black has gained material.} 42. Rd8+ Kh7 43. Rd7 Kg8 44. Rd8+ Kh7 45. Rd7 Rc4
$1 46. Ba7 g5 $1 {He returns one pawn for the attack.} 47. Rxf7 Kg6 48. Rd7 Be5
49. Kf3 Kf5 50. Rf7+ Ke6 51. Rh7 Rc3+ 52. Kg2 ({The pointe is} 52. Ke4 $4 Re3#)
52... Rc2+ 53. Kh1 Ra2 54. Bb6 Kf5 55. h3 d3 56. Be3 Re2 57. Rf7+ Ke6 {
Ivkov defeated an important opponent..He took the lead on Najdorf.} 0-1

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "14"]
[White "Rossetto, Hector"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "D32"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. e3 d5 5. Nc3 Nc6 6. cxd5 exd5 7. Be2 Bd6 8.
dxc5 Bxc5 9. O-O O-O 10. b3 Be6 11. Bb2 Qe7 12. Nb5 Ne4 $5 {
Najdorf makes an offensive move in a quiet opening.} 13. Rc1 Rac8 14. Nbd4 Bd6
15. Nxc6 bxc6 16. Rc2 f5 17. Nd4 $6 ({More active is} 17. Ba6 Rc7 18. Ne5 $1)
17... Bd7 $1 18. g3 $5 Kh8 19. Ba6 Rc7 20. Nf3 Qe6 21. Qa1 Be8 22. Be2 $5 c5
23. Be5 Re7 24. Bxd6 Qxd6 25. Qd1 Bc6 26. Nd2 d4 $5 {The attack begins.} 27.
exd4 Ng5 $5 28. h4 $4 (28. Bf3 $1 Nxf3+ 29. Nxf3 Qd5 30. Rc3 {
defends the kingside properly.}) 28... Re3 $3 {
He overwhelms the opposition brilliantly.} 29. Kh2 ({The first pointe is} 29.
fxe3 Qxg3#) 29... f4 $1 30. f3 ({The second point is} 30. fxe3 fxg3+ 31. Kg1
Nh3#) 30... fxg3+ 31. Kg2 Qe6 $1 32. hxg5 Rxe2+ 33. Kxg3 Qd6+ 34. f4 Rg2+ 35.
Kh3 Qe6+ 36. f5 Rxf5 37. Re1 Rf3+ $1 {Black delivers mate in two.   Ivkov
defeated Toran and kept his small lead on Najdorf at the end of the
penultimate round.} 0-1

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "15"]
[White "Najdorf, Miguel"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "E96"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nbd7 8. Re1
c6 9. Bf1 Re8 10. Rb1 a5 {
This position occurred in Golombek - Ivkov, Opatija 1953.} 11. b3 Ng4 {
Although Ivkov only needs a draw, he has chosen an exciting opening.} 12. Bg5
$5 (12. h3 $6 exd4 13. Nxd4 Nxf2 $1 14. Kxf2 Qf6+ {
was played in Baranov - Lilienthal, Moscow 1953.}) 12... f6 13. Bc1 $5 exd4 14.
Nxd4 f5 15. h3 $1 Qb6 $6 (15... Nxf2 $1 16. Kxf2 Qb6 {leads to the game.}) 16.
Nce2 $6 ({Preferable is} 16. exf5 Rxe1 17. Qxe1 Qxd4 18. hxg4) 16... Nxf2 $1
17. Kxf2 Rxe4 18. Bb2 Nc5 19. Kg1 (19. Qd2 $1 a4 $1 20. b4 Qxb4 $1 21. Qxb4
Nd3+ 22. Kg1 Nxb4 {brings complications.}) 19... Ne6 $1 {
Black regains material.} 20. Kh1 Nxd4 21. Nxd4 Rxd4 22. Bxd4 Qxd4 23. Qxd4 Bxd4
24. Rbd1 $5 c5 25. Re8+ Kf7 26. Rde1 Be5 27. Rd8 $1 b6 $5 {
Black can force a perpetual, when he wishes.} 28. Bd3 h5 29. Bc2 Ke7 30. Rh8
Kf7 31. Rd8 Ke7 32. Rh8 Kf7 {
The game ended by a repetition of moves. Ivkov had won the tournament.} 1/2-1/2

[Event "Mar del Plata"]
[Site "18"]
[Date "1955.??.??"]
[Round "15"]
[White "Panno, Oscar"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "A96"]
[Annotator "JvR"]
[PlyCount "190"]
[EventDate "1955.03.??"]
[SourceDate "1999.07.01"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nf3 Be7 5. O-O O-O 6. c4 d6 7. b3 Ne4 8. Bb2
Bf6 9. Nc3 $5 Nc6 10. Rc1 Nxc3 $5 11. Bxc3 Qe7 12. b4 Bd7 13. b5 Nd8 14. Qb3
Nf7 15. Nd2 c6 16. e4 e5 17. dxe5 Nxe5 18. Rfe1 $5 Qf7 19. Bb4 c5 20. Ba3 $2 ({
Correct is} 20. exf5 Bxf5 21. Ba3) 20... f4 $1 21. gxf4 Bg5 $1 {
He attacks successfully.} 22. fxg5 Qxf2+ 23. Kh1 Qxd2 24. Rcd1 Qf4 $5 {
He should capture g5.} 25. Bc1 Qh4 26. Qg3 Qxg3 27. hxg3 Be6 28. Rxd6 Bxc4 29.
Be3 b6 30. a4 Rad8 31. Rxd8 Rxd8 32. Ra1 Be2 33. a5 Bxb5 34. axb6 axb6 35. Rb1
$5 Be2 $5 36. Rxb6 $5 Rd1+ 37. Bg1 c4 38. Re6 $2 c3 $2 (38... Nf3 $1 39. Bxf3
Bxf3+ 40. Kh2 Bg4 $1 {ends the game.}) 39. Rxe5 c2 40. Rc5 c1=Q 41. Rxc1 Rxc1 {
Black has gained an exchange for a pawn.} 42. Kh2 Bf1 43. Bf2 Rc2 44. Kg1 Bd3
$5 45. e5 Kf7 46. Be3 Ke6 47. Bf4 g6 48. Bh3+ Kd5 49. Bg4 Be2 50. Bd7 Bf3 51.
Kf1 Be4 52. Bg4 Bd3+ 53. Kg1 Ke4 54. Bd1 Rb2 55. Bg4 Bb5 56. Be6 Rc2 57. Bg8
Re2 58. Kf1 Bd3 59. Be6 Kd4 60. Kg1 Rb2 61. Bh3 Bf5 62. Bg2 Be4 63. Bh3 Bf3 64.
Bc8 Bc6 65. Bh3 Rb3 66. Kf2 Rc3 67. Bf1 Bd5 68. Bh3 Kd3 $5 69. Bf1+ $5 Ke4 70.
Bg2+ Kd4 {He makes no progress.} 71. Bh3 Ra3 72. Bf1 $6 (72. e6 $1 {
counters timely.}) 72... Rf3+ 73. Kg1 Rxf4 $1 74. gxf4 Ke3 $1 {
Pachman has winning chances in the bishop ending.} 75. Bh3 Kxf4 76. Kf2 Bc6 77.
Bc8 Kxg5 78. Ke3 h5 79. Kd4 Ba4 80. Ke3 Bc2 81. Kf3 $6 (81. Be6 $1 Bf5 82. Bc4
{controls square e6.}) 81... Bf5 $1 82. Bb7 Bg4+ 83. Ke3 Be6 $1 84. Be4 Kh6 $1
{A long encircling manoeuvre is going to bring the victory.} 85. Kf3 g5 86. Bc6
h4 87. Be4 Kg7 88. Bc6 Kf7 89. Be4 Ke7 90. Bd3 Kd7 91. Be4 Kc7 92. Ke3 Kb6 93.
Ba8 Kc5 $1 94. Be4 h3 95. Kf2 Bd5 $1 {Panno lost twice during the last rounds.
Final standings: Ivkov 111/2/15, Najdorf 11, Gligoric 10, Pachman and Szabo 91/
2, Panno 9, Pilnik 81/2, Toran Albero 8, Wexler 71/2, Rossetto 7, Flores
Alvarez 6, Letelier Martner 5, Bauza, Dodero and Idigoras Guisasola 41/2, De
Greiff 4.} 0-1

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "1"]
[White "Benko, Francisco"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "A01"]
[Annotator "JvR"]
[PlyCount "58"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

{The European participants of Mar del Plata moved to Buenos Aires. Donner,
Trifunovic, Bisguier and ten South Americans joined them. They would play the
"Presidente Peron" tournament from 17 iv until 12 v 1955. It was the
fifty-years-jubilee (Bodas de Oro) of the Club Argentino de Ajedrez.} 1. c4 Nf6
2. b3 e5 3. Bb2 Nc6 4. Nf3 $5 e4 $1 5. Nd4 (5. Ng5 $6 h6 6. Nh3 d5 {
favours Black.}) 5... Bc5 6. e3 (6. Nxc6 $5 dxc6 7. e3 {
will win for Black in Larsen - Spassky, Belgrade 1970.}) 6... Bxd4 7. exd4 d5
$1 {Black has gained an edge.} 8. d3 O-O 9. dxe4 Bg4 $1 {Rossetto sets a trap.}
10. f3 $2 ({Correct is} 10. Be2 Bxe2 11. Qxe2 Nxe4 12. O-O {
and Black has a plus.}) 10... Nxe4 $1 11. fxg4 Qh4+ 12. g3 Nxg3 $6 (12... Qf6
$1 13. Qe2 Rae8 {wins immediately.}) 13. hxg3 $1 Qxh1 14. Nd2 $6 (14. Kd2 Qh2+
15. Kc1 {tries to escape from the catastrophe.}) 14... Rae8+ $1 15. Kf2 f5 $1
16. g5 f4 $5 17. Bg2 $5 (17. Nf3 $1 fxg3+ 18. Kxg3 Re3 19. Bg2 Qh5 {
also wins for Black.}) 17... Qh2 $1 18. gxf4 Rxf4+ 19. Nf3 Ref8 20. Qe2 Rxf3+
21. Qxf3 Qh4+ 22. Ke2 Rxf3 23. Bxf3 Qh2+ 24. Kd3 Qxb2 25. Bxd5+ Kh8 26. Rf1
Nb4+ 27. Ke3 Nxd5+ 28. cxd5 Kg8 29. Rf2 Qc1+ {
Rossetto and Pilnik competed with the best Europeans in the absence of Najdorf.
} 0-1

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "2"]
[White "Lipiniks, Leonardo"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "C68"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Bg4 7. Bg5 $5 ({
The oldest move is} 7. Be3 {(Von Minckwitz - Von Schmidt, Leipzig 1866).}) 7...
f6 8. Be3 Bxf3 9. gxf3 Qxd4 10. Bxd4 Bd6 11. Nd2 Ne7 12. h4 h5 13. O-O-O Rd8
14. Nc4 Kf7 15. e5 $6 {The next exchanges lead to problems for White.} fxe5 16.
Nxe5+ $6 (16. Bxe5 Nf5 17. Rhg1 Be7 18. Ne3 Rxd1+ 19. Kxd1 {almost equalises.})
16... Bxe5 17. Bxe5 Rxd1+ 18. Rxd1 Nf5 $1 19. Bxc7 Nxh4 20. Bg3 $5 Nf5 $5 21.
Rd7+ Ke6 22. Rxb7 h4 23. Bh2 Nd4 24. Rxg7 Nxf3 25. Bc7 h3 26. Rg6+ Kd5 $5 27.
Rd6+ Kc5 28. Rd1 h2 29. Bd6+ Kb5 30. Rh1 Kc4 31. Bg3 Kd4 32. Kd1 Ke4 33. Ke2 $2
({Better is} 33. c4 Kf5 34. b4 Kg4 35. Ke2 Re8+ 36. Kd3 {
White draws if he succeeds to exchange all pawns.}) 33... Rd8 $1 34. Kf1 ({Or} 
34. Bxh2 Rd2+ $1 35. Kf1 Rd1+ 36. Kg2 Nh4+) 34... Rd1+ {
Ivkov had won his second game.} 0-1

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "2"]
[White "Panno, Oscar"]
[Black "Toran Albero, Roman"]
[Result "1-0"]
[ECO "D53"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 h6 6. Bh4 dxc4 7. e3 a6 8. a4 c5
9. Bxc4 cxd4 $5 10. exd4 O-O 11. O-O Nc6 12. Re1 Nd5 13. Bg3 Nxc3 $6 {
Black strengthens the white centre.} ({Preferable is} 13... Qa5 $1) 14. bxc3
Bd6 15. Bd3 Bxg3 16. hxg3 Qa5 17. Qb3 Rd8 18. Ne5 Bd7 19. Nc4 Qc7 20. Nb6 Rab8
21. a5 {Panno has restricted the queenside.} Ne7 22. c4 Be8 23. d5 $1 {
White conquers the centre.} exd5 24. cxd5 Qd6 25. Rac1 Bd7 $5 26. Re3 Nf5 27.
Bxf5 $5 Bxf5 28. Rce1 Bd7 29. Qc3 Re8 $6 {Exchange helps the opponent.} 30.
Rxe8+ Bxe8 $1 31. Nc8 $1 Qd7 32. Rc1 f6 33. d6 Bf7 34. Qc7 $1 Qxc7 35. Rxc7 Be6
36. d7 $1 {He will win a piece.} Bxd7 37. Ne7+ Kf7 38. Rxd7 Ke6 39. Rc7 Kd6 40.
Rc8 Rxc8 41. Nxc8+ Kc5 $5 ({Or} 41... Kd7 42. Nb6+ Kc6 43. Nc4 Kb5 (43... Kc5
44. Ne3) 44. Nd6+) 42. Kf1 $1 Kb4 43. Nd6 Kxa5 44. Nxb7+ Kb6 {
Panno played a great positional game.} 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "3"]
[White "Ivkov, Borislav"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "D55"]
[Annotator "JvR"]
[PlyCount "61"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bxf6 Bxf6 8. Qc2
c5 9. O-O-O $5 {Ivkov makes a risky move.} ({Theory is} 9. dxc5 Qa5 10. Be2)
9... Nc6 10. h4 $6 cxd4 $1 11. exd4 Qc7 {Black has gained a plus.} 12. Kb1 Rd8
13. c5 b6 14. Nb5 Qb8 15. Nd6 bxc5 16. dxc5 Qb4 $1 17. a3 $6 Qa5 18. g4 Rb8 $1
{The black attack is more dangerous.} 19. Nb5 g6 $6 ({Correct is} 19... Rxb5
20. Bxb5 Qxb5 21. g5 Be7 22. gxh6 gxh6 23. Rhg1+ Kf8 {
and Black has a big advantage.}) 20. g5 $1 hxg5 21. h5 $5 gxh5 22. Rxh5 Rxb5 $5
23. Bxb5 Qxb5 24. Nxg5 Bxg5 25. Rxg5+ Kf8 26. f4 d4 27. Qh7 Qe2 $4 {
Guimard misses a mate charge.} (27... Ke7 $1 28. Qh4 Kd7 $1 {keeps an edge.})
28. Rg8+ Ke7 29. Qh4+ Kd7 30. Rxd8+ Kc7 $5 31. R1xd4 {
Ivkov and Pilnik had won three games.} 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "4"]
[White "Pachman, Ludek"]
[Black "Donner, Jan Hein"]
[Result "1-0"]
[ECO "D35"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. cxd5 exd5 5. d4 Ne4 6. Qc2 $5 ({Known is} 6.
Qb3) 6... Nxc3 7. bxc3 Nc6 8. g3 $5 Bd6 9. Bg2 Ne7 10. O-O O-O 11. c4 c6 12.
Ne5 Re8 13. cxd5 Nxd5 14. Nc4 Bf8 15. a3 Nb6 16. Nxb6 Qxb6 17. Rd1 Qb5 18. e4
Qh5 19. f3 Bh3 20. Bh1 $5 Be6 21. Rb1 Re7 22. a4 Rd7 23. Be3 Qa5 24. f4 Re8 $5
{Does Donner make a silly mistake?} 25. f5 $2 Bxf5 $1 26. Bd2 $5 {Jan Hein was
plagued by disasters in short games regularly. This time he resigned in a won
position.} (26. Bd2 {does not catch a queen!} Qd5 $1 27. exd5 ({or} 27. exf5
Qxd4+ 28. Kf1 Bc5 $1) 27... Bxc2 28. Re1 Rc8 29. Rb2 Bxa4 $1 30. Ra1 b5 31.
dxc6 Rxd4 32. Be3 Bc5 $1 {gains material.}) 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "5"]
[White "Donner, Jan Hein"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "E67"]
[Annotator "JvR"]
[PlyCount "94"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nbd7 7. Qc2 e5 8. Rd1
Re8 9. Nc3 c6 10. b3 e4 11. Ng5 e3 12. fxe3 Nf8 13. e4 Qe7 14. e3 {
White has an edge.} Bh6 $5 (14... h6 {
was played in Donner - Kluger, Amsterdam 1954.}) 15. Nf3 Nxe4 16. Nxe4 $6 Qxe4
$6 (16... Bf5 $1 {equalises.}) 17. Qxe4 Rxe4 {Black has regained the pawn.} 18.
Ng5 $1 Re7 $5 19. Ne4 $1 Bh3 $5 20. Nxd6 Bxg2 21. Kxg2 Bxe3 22. Re1 Re6 23.
Bxe3 Rxd6 {Donner has achieved a positional plus.} 24. Rad1 Rad8 25. Rd2 a6 26.
Red1 Ne6 27. g4 f6 28. h4 Kf7 29. Kf3 h5 $5 30. gxh5 gxh5 31. d5 cxd5 32. Rxd5
Rxd5 33. cxd5 Nf8 34. Bf2 Ng6 35. Bg3 f5 $5 36. Ke3 f4+ $2 (36... Re8+ $1 37.
Kd4 Re2 $1 38. Rf1 Kf6 {defends well.}) 37. Bxf4 Re8+ 38. Kd4 $1 Nxh4 ({
The pointe is} 38... Nxf4 $2 39. Rf1) 39. Kc5 $1 {
The king will attack defenceless pawns.} Ng2 40. Bc7 $1 Ke7 41. Kb6 Ne3 42. Rd3
Kd7 43. Bf4 Nf5 $5 44. Kxb7 Re4 45. Bc7 Rb4+ $6 (45... h4 $5 46. Bb6 Rg4 {
fights for the last chance.}) 46. Bb6 h4 47. Kxa6 Rg4 {
Donner will advance on the queenside victoriously.} 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "6"]
[White "Szabo, Laszlo"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "E80"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 e5 6. d5 c5 7. Bg5 Na6 8. Bd3 $5
Nc7 9. Nge2 Bd7 10. a3 h6 11. Be3 O-O 12. b4 b6 13. O-O Kh8 $5 {
Black plays passively.} 14. Rb1 Ng8 $6 15. Qd2 Ne8 $5 {The knights retreat.}
16. Rb3 f5 $1 17. f4 g5 $1 18. g3 $6 (18. fxe5 $1 f4 19. Bxf4 $1 gxf4 20. e6
Bc8 21. Nxf4 Qg5 22. e5 $1 {charges in the centre for little material.}) 18...
fxe4 19. Nxe4 Bh3 20. Rf2 Nef6 21. fxg5 Ng4 $2 (21... Nxe4 22. Bxe4 Rxf2 23.
Bxf2 Qxg5 24. Qxg5 hxg5 {makes useful exchanges.}) 22. N2c3 $1 {
White sacrifices for an attack.} Qd7 23. Nb5 $5 Nxf2 24. Bxf2 Rf3 $2 (24...
hxg5 25. Qxg5 Nh6 26. Nbxd6 cxb4 27. axb4 Qg4 {offers more resistance.}) 25.
Nbxd6 Raf8 $5 26. bxc5 bxc5 27. Rb7 Qd8 28. g6 Ne7 29. Nf7+ R8xf7 30. gxf7 {
Szabo and Ivkov were competing for a top position.} 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "7"]
[White "Ivkov, Borislav"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "C66"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. d5 Ne7 7. Bxd7+ $5 Qxd7
8. Re1 h6 $5 9. c4 Ng6 10. Qb3 c5 11. Nc3 Be7 12. Qa4 Qxa4 13. Nxa4 Kd7 $1 14.
a3 Rhc8 15. g3 Rab8 {Black has achieved equality.} 16. Nd2 Bd8 17. b4 b5 $1 18.
Nb2 cxb4 19. axb4 Bb6 20. h3 Rb7 21. cxb5 Bd4 22. Ra6 Rxb5 23. Nbc4 Ne8 24. Bb2
Bxb2 25. Rxa7+ Kd8 26. Nxb2 Rxb4 27. Nbc4 Rcxc4 $1 28. Nxc4 Rxc4 29. Rxf7 Rc7
30. Rxc7 Nxc7 31. Rb1 {White has the initiative in the endgame.} Ne7 $5 (31...
Nf8 $1 32. Rb8+ Ke7 33. Rb7 Kd8 34. f4 Nd7 {creates an excellent defence line.}
) 32. f3 Kd7 33. Kf2 Ng8 $5 ({Preferable is} 33... g5 $1) 34. f4 $1 Nf6 35. Kf3
Ke7 36. Rb7 Nfe8 $5 37. Rb6 $5 Nf6 $4 {Sanguineti blunders.} (37... exf4 38.
gxf4 g5 39. fxg5 hxg5 {about levels.}) 38. fxe5 dxe5 39. d6+ Kd7 40. dxc7 {
Ivkov, Pilnik and Gligoric shared the lead by 51/2/7.} 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "8"]
[White "Gligoric, Svetozar"]
[Black "Bisguier, Arthur"]
[Result "0-1"]
[ECO "E52"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 b6 7. O-O Bb7 8. Bd2
Be7 9. Qe2 Ne4 $5 10. Rfd1 a6 11. Be1 Nd7 12. Ne5 f5 13. cxd5 exd5 14. f3 Nxc3
15. Bxc3 Qe8 $5 16. b4 Bd6 $6 ({Preferable is} 16... c5 $1 17. dxc5 bxc5 18.
bxc5 Nxc5) 17. f4 $1 c5 $5 18. bxc5 bxc5 19. Rab1 Ra7 20. Qf3 Qe6 21. Qh3 $6 (
21. Nxd7 Qxd7 22. dxc5 Bxc5 23. Be5 {keeps a plus.}) 21... c4 $1 22. Bc2 g6 23.
Qh4 Bc8 24. Qe1 $5 Rb7 25. Rxb7 Bxb7 26. Rb1 Rb8 27. h3 Bc8 28. Rxb8 Bxb8 29.
Ba5 Ba7 $5 30. Qb4 $5 Nxe5 31. fxe5 f4 $1 32. Qe1 Qe7 33. exf4 $2 ({Better is} 
33. Bb4 Qf7 34. Qf2) 33... Bxd4+ 34. Kh1 Bc5 $1 35. Qg3 d4 $1 {
Black counters in the centre.} 36. Be4 Qf7 37. Qf3 d3 $2 ({Right is} 37... Be6)
38. Bc3 $2 (38. Bd5 $1 Be6 39. Bxe6 Qxe6 40. Qa8+ Kg7 41. Qb7+ Qf7 42. Qe4 $1 {
defends properly.}) 38... Be6 $1 39. g4 Qd7 40. f5 $5 {The last try.} d2 $1 41.
Qd1 gxf5 42. Bc2 Qd5+ 43. Kh2 Bd4 44. Bxd4 Qxd4 {Gligoric lost the lead.} 0-1

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "10"]
[White "Szabo, Laszlo"]
[Black "Bisguier, Arthur"]
[Result "1-0"]
[ECO "D46"]
[Annotator "JvR"]
[PlyCount "45"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 Bd6 7. e4 dxe4 8. Nxe4
Nxe4 9. Bxe4 Nf6 10. Bc2 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 O-O 13. Ne5 $5 Qc7 14.
O-O-O $5 {Szabo makes sharp moves.} c5 $6 (14... b5 $1 15. c5 Nd5 {
counters in the centre.}) 15. Qe3 b6 16. dxc5 bxc5 $2 (16... Qxc5 17. Qxc5 bxc5
{brings a difficult endgame for Black.}) 17. g4 $1 Rb8 18. Rhg1 Qb6 19. b3 Rb7
$5 {He has no satisfactory defence.} 20. g5 Ne8 21. Bxh7+ $1 {
An elementary sacrifice decides the game.} Kxh7 22. Qh3+ Kg8 23. Rg4 $1 {
White threatens mate in two.  Ivkov had scored 8/10 and led by one point on
Szabo and Pilnik.} 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "12"]
[White "Ivkov, Borislav"]
[Black "Toran Albero, Roman"]
[Result "1-0"]
[ECO "C66"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 7. dxe5 dxe5 8.
Bg5 $5 O-O 9. Re1 h6 10. Bh4 Bd6 $5 11. Nd5 $1 {White has the initiative.} Kh7
$2 {Toran defends passively. He misses a spectacular escape.} ({Right is} 11...
g5 $1 12. Nxg5 $5 (12. Bg3 Re8 13. c4 {gains a positional plus.}) 12... Nxd5 $1
13. exd5 hxg5 14. dxc6 bxc6 15. Bd3 gxh4 16. Qh5 Kg7 17. Qh7+ Kf6 18. Qxh4+ Kg7
{and White delivers perpetual check.}) 12. Bxf6 $1 gxf6 13. Nh4 Be6 14. c3 f5
$6 {The attempt to liberate the position by a pawn sacrifice fails.} 15. Nxf5
Bxf5 16. exf5 Qh4 17. Re4 $1 Qd8 18. f6 Rg8 19. Bd3 Rg6 20. Qh5 Qd7 21. Rh4 Bf8
22. Be4 Rd8 23. Rg4 Kh8 24. Rxg6 fxg6 25. Qxg6 {White threatens f7 and mate.}
1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "12"]
[White "Reinhardt, Enrique"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "B58"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

{Heinrich Reinhardt had been the reserve player of the German team in 1939. He
stayed in Argentina.} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6.
Be2 e5 7. Nxc6 bxc6 8. O-O Be7 9. f4 O-O 10. Qd3 Nd7 11. Qg3 $5 ({
The alternative is} 11. f5) 11... Bh4 12. Qf3 exf4 13. Bxf4 Ne5 14. Qe3 Ng6 15.
Rad1 Nxf4 16. Qxf4 Qb6+ 17. Kh1 Be7 {Black has the two bishops.} 18. e5 $5 d5
$1 19. b3 Qb4 20. Qd2 Qh4 21. Na4 $6 Qe4 $1 {He threatens pawn e5.} 22. c4 $1
Qxe5 $1 {Black has to play carefully.} (22... dxc4 $2 23. Bxc4 Qxe5 $2 24. Rxf7
$1 Rxf7 25. Qd8+ $1 Bf8 26. Bxf7+ Kxf7 27. Rf1+ Kg6 28. Qxf8 {favours White.})
23. cxd5 Bd6 24. g3 Bh3 25. Rf2 Rad8 26. Bf3 $6 ({Better is} 26. dxc6 Bc7 27.
Qc2 Rxd1+ 28. Qxd1) 26... Bc7 $6 27. Kg1 $6 {
Capture of a central pawn would be preferable for the third time.} cxd5 {
Black gains a pawn.} 28. Re2 ({The pointe is} 28. Bxd5 $2 Be6) 28... Qf6 29.
Qc3 $2 (29. Rf2 Qe7 30. b4 {defends properly.}) 29... Bb6+ $1 {
Knight a4 is overburdoned.} 30. Kh1 d4 31. Qd3 Bf5 32. Qd2 d3 33. Ree1 Bd4 34.
Bg2 Rfe8 35. Rf1 Re2 36. Qf4 Bg6 37. Qc7 Qd6 38. Qb7 h6 39. Rf4 d2 $1 {
Ivkov led by one point on Pilnik.} 0-1

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "14"]
[White "Trifunovic, Petar"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "C85"]
[Annotator "JvR"]
[PlyCount "118"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Bxc6 dxc6 7. Qe1 Nd7 8.
d4 exd4 9. Nxd4 O-O 10. Nc3 Ne5 11. Nf5 $5 (11. Nde2 {
had no success in Schmid - Penrose, Amsterdam 1954.}) 11... Bb4 12. a3 Ba5 13.
b4 $6 ({Preferable is} 13. Ng3 Be6 14. b4 Bb6 15. Be3) 13... Bb6 14. Na4 Bxf5
15. Nxb6 $2 (15. exf5 Re8 16. Qe4 {avoids the loss of a pawn.}) 15... cxb6 16.
exf5 Qf6 17. Bf4 $5 (17. Be3 $6 b5 18. Bd4 Nf3+ $1 19. gxf3 Qxd4 {
leads to a horrible pawn structure for White.}) 17... Rfe8 18. Qc3 Qxf5 19.
Bxe5 Qxe5 20. Qxe5 Rxe5 21. Rfd1 f6 22. Rd7 Rae8 $1 23. Kf1 R8e7 24. Rxe7 Rxe7
{Black has an extra pawn in the rook ending.} 25. Rd1 Kf7 26. Rd8 Ke6 27. Ke2
Rd7 28. Re8+ Kd6 29. Rc8 b5 30. Kd3 Re7 31. Rd8+ Kc7 {
The king supports his queenside.} 32. Rh8 h6 33. Rg8 Kb6 34. Ra8 Kc7 35. Rg8 b6
$1 36. Kd2 a5 37. Kd3 c5 38. c3 {Black cannot create a passed pawn.} a4 $1 {
A3 becomes vulnerable.} 39. Kd2 $6 {White does not advance on the kingside.}
Kc6 40. Rb8 Re5 41. Rc8+ $6 (41. Rg8 $1 Rd5+ 42. Kc2 $1 Rg5 43. g3 Rf5 44. f4
g5 45. fxg5 hxg5 46. h4 {offers more resistance.}) 41... Kd5 $1 {
Black threatens ..Kc4.} 42. Kd3 Re1 $1 43. Rd8+ Kc6 44. Rc8+ Kb7 45. Rg8 Ra1
46. Rxg7+ Ka6 47. bxc5 ({The alternative is} 47. Rf7 Rxa3 48. bxc5 b4 49. Kc4
b5+ 50. Kxb4 Rb3# {(Ivkov).}) 47... bxc5 48. Rf7 Rxa3 49. Rxf6+ Kb7 50. Kc2
Ra2+ 51. Kb1 Re2 52. Rxh6 Rxf2 53. Rg6 Rf4 54. Kc2 b4 55. cxb4 cxb4 56. Kd3 a3
57. Re6 b3 58. Kc3 b2 59. Re1 Rb4 $1 {
Gligoric defeated his comrade in an excellent way.} 0-1

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "15"]
[White "Gligoric, Svetozar"]
[Black "Pachman, Ludek"]
[Result "1-0"]
[ECO "D86"]
[Annotator "JvR"]
[PlyCount "45"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8.
Ne2 b6 9. O-O Bb7 10. f3 c5 11. Be3 cxd4 12. cxd4 Nc6 13. Rc1 e6 $6 (13... Na5
14. Bd3 Qd7 {drew in Uhlmann - Pachman, Prague 1954.}) 14. d5 $1 exd5 15. Bxd5
Na5 16. Nf4 $1 {White rules the centre.} Rc8 17. Rxc8 Qxc8 18. Bd4 Bxd4+ 19.
Qxd4 Nc6 20. Qb2 Ne7 21. Rc1 Qb8 $4 (21... Qd7 $1 22. Bb3 Qd6 {
defends properly.}) 22. Ne6 $1 Bxd5 {Pachman puts an end to his agony.} (22...
fxe6 23. Bxe6+ Rf7 24. Qf6 Qf8 25. Rc7 $1 {wins for White.}) 23. Qg7# {
Ivkov (12/15) led before Gligoric (11).} 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "17"]
[White "Gligoric, Svetozar"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "D47"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3
Bb7 9. a3 a6 $5 10. b4 Bd6 11. O-O O-O 12. Ne4 Nxe4 13. Bxe4 a5 14. Rb1 Qe7 15.
Bd2 Rfd8 16. Qc2 h6 17. Rfc1 Nf6 18. Bd3 axb4 19. axb4 Ra4 20. Qb3 Nd5 $6 {
Black gains a pawn at a high cost.} 21. e4 $1 Nxb4 22. e5 $1 Bc5 $2 (22... Nxd3
23. exd6 Qxd6 24. Qxd3 e5 $1 {brings compensation for the piece.}) 23. Bf1 $6 (
{Better is} 23. Be2 $1 Bxd4 24. Bxb4 c5 25. Be1) 23... Bxd4 24. Bxb4 c5 25. Ba3
$2 (25. Be1 $1 Bxf3 $1 26. Qxf3 b4 27. Qe4 {keeps an advantage.}) 25... Bd5 $1
26. Qxa4 $1 bxa4 27. Nxd4 {
White has a rook, bishop and knight for a queen and two pawns.} Qg5 28. Rxc5
Qd2 $6 (28... Bxg2 $1 29. Bxg2 Rxd4 {equalises.}) 29. Nb5 Be4 30. Rbc1 Bd3 31.
Nd6 Bxf1 32. Rxf1 Qd3 33. Bc1 Rb8 34. Ra5 Rb4 $2 {
The rook should not leave the eighth rank.} 35. h3 $1 f6 $2 {
He weakens the seventh rank too.} 36. Ra8+ $1 {The attack decides quickly.} Kh7
37. exf6 $1 gxf6 38. Ra7+ Kg6 ({Or} 38... Kg8 39. Ne8 Qg6 40. Rg7+) 39. Ne8 Rb8
$5 40. Rg7+ Kf5 41. g4+ $1 {Gligoric neared the leader.} (41. g4+ Ke4 42. f3+
Ke5 43. f4+ Ke4 44. Nxf6+ Kd4 45. Rd7+ {wins the queen.}) 1-0

[Event "Buenos Aires"]
[Site "Club Argentino de Ajedrez"]
[Date "1955.??.??"]
[Round "17"]
[White "Pilnik, Herman"]
[Black "Trifunovic, Petar"]
[Result "1-0"]
[ECO "C84"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1955.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a4
Bd7 9. c3 Na5 10. Bc2 c5 11. d4 $5 Nc6 12. dxe5 dxe5 13. Qe2 O-O 14. Rd1 Qc7
15. Nbd2 Na5 16. Nf1 c4 17. axb5 axb5 18. Bg5 $1 {
White develops his pieces slowly and efficiently.} Bc6 19. Ne3 Ne8 $2 {
Trifunovic lacks his usual solidity.} (19... Rfd8 20. Nf5 Rxd1+ 21. Rxd1 Nb7 {
reorganises the black pieces.}) 20. Nd5 $1 Bxd5 21. Bxe7 $1 Qxe7 22. Rxd5 {
He attacks two pawns.} Nc7 23. Rxe5 Nc6 $1 24. Rxa8 $1 Nxe5 25. Rxf8+ Kxf8 26.
Nd4 b4 $2 {A second pawn is going to fall.} 27. f4 $1 Ng6 28. Qxc4 Nxf4 29. Nf5
$1 Qd8 30. Qxb4+ Kg8 31. Qd6 Qxd6 32. Nxd6 Kf8 33. Kf2 Ke7 34. Nf5+ Kf6 35. Ne3
Nb5 36. Nd5+ Ke5 37. Nxf4 Kxf4 38. Bd3 Nd6 39. g3+ Ke5 40. Ke3 Ne8 {The final s
tandings became: Ivkov 13/17, Gligoric 121/2, Pilnik 12, Szabo 111/2, Rossetto,
Pachman and Bisguier 10, Panno 91/2, Donner 9, Trifunovic, Guimard, Martin and
Toran Albero 8, R.Sanguineti 71/2, Esposito 7, Lipiniks 4, Reinhardt 3, F.
Benko 2. Borislav Ivkov had won two Argentine tournaments in a row.} 1-0

[Event "Mar del Plata"]
[Site "19"]
[Date "1956.??.??"]
[Round "1"]
[White "Toth, Vince"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E30"]
[Annotator "JvR"]
[PlyCount "42"]
[EventDate "1956.03.??"]
[SourceDate "1999.07.01"]

{Only South Americans participated in the nineteenth Mar del Plata tournament.
Seventeen men played from 12 iii until 2 iv 1956.} 1. d4 Nf6 2. c4 e6 3. Nc3
Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 exd5 7. cxd5 d6 8. f3 O-O 9. e4 Nbd7 10. Nh3 $5 {
The opening favours Black.} Ne5 11. Nf2 Ng6 12. Bg3 Nh5 13. Nd3 $6 ({
Slightly better is} 13. Qd2) 13... Nxg3 14. hxg3 f5 $1 15. exf5 Bxc3+ 16. bxc3
Bxf5 17. Be2 $2 (17. Qd2 {avoids a disaster.}) 17... Qg5 $1 18. Kf2 Rae8 $1 19.
Qc1 $5 (19. f4 $5 Bxd3 $1 20. Qxd3 Rxf4+ $1 21. gxf4 Nxf4 {wins for Black.})
19... Rxe2+ $1 20. Kxe2 Re8+ 21. Kf2 Bxd3 {Najdorf has gained material.} 0-1

[Event "Mar del Plata"]
[Site "19"]
[Date "1956.??.??"]
[Round "6"]
[White "Rossetto, Hector"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "B86"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1956.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. a3 Be7 8. O-O
O-O $5 9. Kh1 b5 10. Ba2 Bb7 11. Qe2 Nc6 12. Nxc6 Bxc6 13. f4 Kh8 14. Bd2 a5
15. e5 $1 {White takes the initiative.} Ne8 16. Nxb5 dxe5 17. Bc3 $5 ({
Preferable is} 17. c4 $1 Nd6 18. Bc3 exf4 19. Rxf4) 17... Qb6 $5 18. a4 exf4
19. Rxf4 Bf6 20. Bxf6 $5 (20. Raf1 $1 Bxc3 21. Rxf7 Rxf7 22. Rxf7 Nd6 23. Nxd6
Qxb2 24. Qf1 Qa1 {leads to equality.}) 20... Nxf6 21. Bc4 Rad8 22. Raf1 Qc5 23.
Bd3 Qg5 $1 {Black prepares an attack.} 24. Nc3 h6 25. Kg1 Rd7 26. h3 Rfd8 27.
Qf2 $2 ({Correct is} 27. Rc4 $1 Bb7 28. Qf2 Rd4 29. h4 Qg4 30. Be2 Qg6 31. Bd3)
27... Rd4 $1 28. Rxd4 (28. h4 Rxf4 29. hxg5 Rxf2 30. Rxf2 hxg5 {costs a pawn.})
28... Rxd4 29. Qe2 ({The pointe is} 29. Qxd4 Qxg2#) 29... Rh4 30. Bb5 Bb7 31.
Ba6 $5 Bxa6 32. Qxa6 Rxh3 $1 33. Qa8+ Kh7 34. Ne4 Qe3+ 35. Nf2 Rg3 36. Qxa5 Qf3
$1 {Julio Bolbochan and Najdorf were competing for the first place.} 0-1

[Event "Mar del Plata"]
[Site "19"]
[Date "1956.??.??"]
[Round "9"]
[White "Najdorf, Miguel"]
[Black "Idigoras Guisasola, Gregorio"]
[Result "1-0"]
[ECO "E81"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1956.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Be3 Nbd7 7. Qd2 c5 8. d5
Re8 9. Nh3 $5 Qa5 10. Nf2 Ne5 11. Be2 a6 12. O-O Rb8 13. a3 Qc7 14. Bh6 Bh8 $5
15. f4 $1 Neg4 $2 ({Correct is} 15... Ned7 {
and White has a positional advantage.}) 16. Bxg4 Nxg4 17. Nxg4 Bxg4 18. f5 $1 {
White has cut off a bishop.} Bd4+ 19. Kh1 gxf5 20. h3 f6 $5 (20... Bh5 21. Qg5+
$1 Bg6 22. exf5 {also costs a piece.}) 21. hxg4 fxg4 22. Ne2 Be5 23. Nf4 Bxf4
24. Rxf4 Qd7 25. Qe2 {Najdorf led the event.} 1-0

[Event "Mar del Plata"]
[Site "19"]
[Date "1956.??.??"]
[Round "12"]
[White "Sanguineti, Raul"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "A26"]
[Annotator "JvR"]
[PlyCount "115"]
[EventDate "1956.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 e5 7. d3 h6 8. Bd2
Nc6 9. Rb1 a5 $5 (9... Be6 {
occurred in Blackburne - Znosko Borovsky, Oostende 1907.}) 10. a3 Be6 11. b4
axb4 12. axb4 e4 13. Ne1 exd3 14. exd3 d5 15. c5 Re8 16. b5 Nd4 17. Nc2 Bg4 18.
f3 Nxc2 19. Qxc2 Be6 20. Ne2 Nd7 21. Bc3 Bxc3 22. Qxc3 Qf6 23. Rfc1 Ra2 24.
Qxf6 Nxf6 25. Bf1 Rea8 26. Nc3 R2a3 27. d4 Bf5 28. Rb2 g5 29. h3 Kf8 30. Kf2 b6
31. g4 Bg6 32. Rd2 Rb3 33. Be2 Raa3 34. cxb6 $5 {
The game takes an interesting turn.} Rxc3 $5 {Najdorf accepts the challenge.}
35. Rxc3 Rxc3 36. b7 Nd7 37. Ra2 Rc2 38. Ra8+ Ke7 39. Ke3 Rc3+ $2 (39... c6 $1
40. f4 gxf4+ 41. Kxf4 cxb5 42. Bxb5 Rf2+ 43. Kg3 Rb2 44. Re8+ Kd6 45. Bxd7 Rxb7
{draws.}) 40. Kd2 Rc2+ 41. Kd1 $1 c6 $6 42. b6 $2 (42. Rc8 $1 cxb5 43. Rxc2
Bxc2+ 44. Kxc2 Nb8 45. Bxb5 {wins for White.}) 42... Rb2 43. b8=Q Nxb8 44. Rxb8
Rb1+ 45. Kd2 Rb2+ 46. Kc3 Rxe2 47. Re8+ $5 Kxe8 48. b7 Re3+ 49. Kb4 Rxf3 50.
b8=Q+ Kd7 51. Qb7+ Kd6 52. Qc8 Rxh3 53. Qd8+ Ke6 54. Kc5 $1 {
White has a queen for a rook, bishop and three pawns.} Rc3+ $2 ({Correct is} 
54... f6 $1 55. Qd6+ Kf7 56. Kxc6 Be4 {and Black survives.}) 55. Kb6 f6 56. Qf8
$2 ({Victory brings} 56. Qg8+ $1 Bf7 57. Qf8 $1 Bg6 58. Kc7 $1 f5 59. Kd8 fxg4
60. Qe7+ Kf5 61. Qe5#) 56... Re3 $2 (56... h5 $1 57. Qg8+ Bf7 58. Qc8+ Ke7 59.
Kc7 Be8 60. gxh5 Bxh5 61. Qd7+ Kf8 62. Qh7 {leads to equality.}) 57. Kc7 $1 Re4
58. Kd8 $2 {
Najdorf resigned in a better position. He kept the lead, despite this loss.} ({
White missed the win by} 58. Qg8+ $1 Bf7 (58... Ke7 59. Qxg6 Ke6 60. Qe8#) 59.
Qd8 Rxg4 60. Qd7#) ({The game could be continued by} 58. Kd8 Rxg4 $1 59. Qe7+ {
(the desirable 59.Qc8+ would be against the rules)} Kf5 60. Qd7+ Kf4 61. Qxc6
Be4 62. Qxf6+ Ke3 63. Qxh6 Kxd4 {
and Najdorf would have been able to torture his opponent for a long time.}) 1-0

[Event "Mar del Plata"]
[Site "19"]
[Date "1956.??.??"]
[Round "13"]
[White "Najdorf, Miguel"]
[Black "Reinhardt, Enrique"]
[Result "1-0"]
[ECO "E40"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1956.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 5. Bd3 e5 6. Nge2 d5 {
Reinhardt chooses an enterprising line of the Nimzo-Indian.} 7. cxd5 Nxd5 8.
O-O exd4 9. exd4 O-O 10. a3 Be7 11. Bc2 $5 (11. Qc2 {
drew in Sajtar - Stoltz, Bucharest 1953.}) 11... Bg4 12. Qd3 g6 13. Ng3 Bf6 14.
Be3 $5 Bg7 15. Rfe1 $5 Nb6 $6 (15... Bxd4 $1 16. Bxd4 Nf4 17. Qe3 Qxd4 18. Be4
Qxe3 19. fxe3 Nh5 20. Nxh5 Bxh5 21. Bxc6 bxc6 {brings equality.}) 16. h3 Be6
17. Rad1 Bc4 18. Qd2 Re8 19. Nge4 Nd5 $2 ({Better is} 19... f5 $1 20. d5 Ne7
21. d6 fxe4 22. Bxb6 axb6 23. Rxe4 Nf5 24. Rxc4 Nxd6) 20. Bg5 $1 Qd7 (20... f6
21. Nxd5 Bxd5 22. Nxf6+ Bxf6 23. Rxe8+ Qxe8 24. Bxf6 {costs a pawn.}) 21. Nc5
Rxe1+ 22. Rxe1 Qc8 23. Be4 $1 Nb6 $6 (23... Nxc3 24. Qxc3 Bb5 {
loses no material.}) 24. b3 $1 f6 $5 25. Bxf6 Bxf6 26. Bxc6 bxc6 27. bxc4 Qf8 (
{The pointe is} 27... Nxc4 $2 28. Qa2 $1) 28. N5e4 Bg7 29. c5 Nd5 30. Nxd5 cxd5
31. Ng5 Bh6 32. Qa2 c6 33. Nf3 Re8 34. Qb1 Rb8 35. Qc2 Bf4 36. Qa4 Qc8 37. Qxa7
Ra8 38. Qe7 Rxa3 39. Qf6 Bh6 40. Re7 Ra1+ 41. Kh2 Qf8 42. Qe6+ Kh8 43. Re8 {
Najdorf increased his lead on Julio Bolbochan to one point.} 1-0

[Event "Mar del Plata"]
[Site "19"]
[Date "1956.??.??"]
[Round "16"]
[White "Eliskases, Erich"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "E60"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1956.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 O-O 5. g3 d6 6. d4 e5 7. dxe5 Ng4 8. Bg2 {
Eliskases plays his favourite opening.} Nxe5 9. Nc3 $5 (9. Nxe5 dxe5 10. O-O {
drew in Flohr - Borisenko, Moscow 1955.}) 9... Na6 10. O-O Nc5 11. Qd2 Be6 12.
Rad1 Qc8 $2 ({Better is} 12... Nxf3+ 13. Bxf3 Re8) 13. Nxe5 Bxe5 ({Not} 13...
dxe5 $2 14. Ba3 $1) 14. f4 Bg7 15. e4 Re8 16. f5 $1 {
White decides the game by a pawn sacrifice.} gxf5 17. exf5 Bxf5 18. Nd5 $1 Bg6
19. Bxg7 Kxg7 20. Qc3+ Re5 21. Rfe1 $6 (21. Rde1 $1 f6 22. Nxf6 {
wins immediately.}) 21... f6 22. Nxf6 $1 {
Pawn f6 can be taken without a rook on f1.} Qf5 ({The pointe is} 22... Kxf6 23.
Rxe5 dxe5 24. Rf1+ Bf5 25. g4) 23. Nd5 Rf8 24. Rxe5 dxe5 $5 ({Or} 24... Qxe5
25. Qxe5+ dxe5 26. Nxc7) 25. Rf1 Qh5 26. Nf4 $1 Qg5 27. b4 Na4 28. Ne6+ Kh6 29.
Rxf8 Nxc3 30. Nxg5 Kxg5 31. h4+ Kg4 32. Kh2 {He threatens Bh3#.} e4 33. a3 Ne2
34. Bh3+ Kh5 35. Rf6 Nd4 36. Rf4 b6 37. Bg4+ Kh6 38. h5 Bxh5 39. Bxh5 Kxh5 40.
Rxe4 {Eliskases attacked in an elegant way.} 1-0

[Event "Mar del Plata"]
[Site "19"]
[Date "1956.??.??"]
[Round "16"]
[White "Maderna, Carlos"]
[Black "Bolbochan, Julio"]
[Result "0-1"]
[ECO "B22"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1956.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Nc3 dxe5 8.
Bb5 $5 {White sacrifices a pawn.} ({Theory is} 8. dxe5 Nxc3 9. Qxd8+ Kxd8 10.
bxc3) 8... exd4 (8... Nxc3 $1 9. bxc3 exd4 10. Nxd4 Qc7 {
gains a plus for Black.}) 9. Qxd4 Nxc3 10. Qxc3 Qb6 11. a4 a6 12. Be3 Qc7 13.
O-O e6 (13... axb5 $5 14. axb5 Rxa1 15. Rxa1 f6 16. bxc6 Qxc6 17. Qa5 {
brings about equality.}) 14. Rfd1 $5 axb5 15. axb5 Rxa1 16. Rxa1 Bd6 $5 17.
bxc6 $2 (17. Qxg7 $1 Be5 18. Nxe5 Qxe5 19. Bh6 $1 Qxg7 20. Bxg7 Rg8 21. bxc6
Rxg7 22. Ra8 bxc6 23. Rxc8+ Kd7 {levels the game.}) 17... O-O 18. Bd4 f6 19.
cxb7 Qxb7 20. Ra7 Qe4 $1 {Black charges in the centre.} 21. Nd2 Qe2 22. Qe3 Qh5
23. h3 Bb8 24. Ra1 Qd5 25. Bc3 Bb7 26. Nf3 e5 27. Ra5 Qd7 28. Ne1 h6 29. Qe2 e4
30. Qc4+ Kh7 31. Qe2 Qf7 32. Nc2 f5 33. Ne3 Qg6 $6 (33... f4 $1 34. Rf5 Qg8 35.
Rxf8 Qxf8 {continues the attack.}) 34. Be5 $2 (34. Qb5 $1 Bc6 35. Qc5 Bd6 36.
Qc4 {offers more resistance.}) 34... Bxe5 35. Rxe5 f4 $1 36. Ng4 e3 $1 37. fxe3
$2 f3 $1 38. gxf3 Bxf3 39. Qc4 {Julio Bolbochan equalised with Najdorf in the
penultimate round. Both players won their last game.   The final standings
became: Julio Bolbochan and Najdorf 121/2/16, Sanguineti and Eliskases 11,
Jacobo Bolbochan 10, Behrensen, Idigoras  Guisasola and Redolfi 91/2, Pelikan
81/2, Shocron 8, Maderna and Wexler 71/2, Toth and Rossetto 6, Reinhardt 41/2,
Olivera 21/2, Gondim 0.} 0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "1"]
[White "Kotov, Alexander"]
[Black "Esposito, Alfredo"]
[Result "1-0"]
[ECO "A16"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

{Soviet chess slowly opened up after World War II. The 'Russians', Keres and
Kotov, were allowed to partake in the twentieth Mar del Plata event. Eighteen
men played from 15 iii until 8 iv 1957.} 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2
O-O 5. e4 c5 6. a3 $6 {Kotov develops quietly.} Nc6 7. Rb1 d6 8. b4 Ne8 $6 (
8... cxb4 9. axb4 a5 {gains a plus.}) 9. Nge2 Nc7 10. O-O Ne6 11. d3 Rb8 12.
Nd5 b6 13. Be3 Bd7 14. Qd2 Ned4 15. Nxd4 Nxd4 16. Bh6 Bh3 $5 17. Bxg7 Kxg7 18.
f4 Bxg2 19. Qxg2 e6 20. Ne3 f5 21. Rf2 Qd7 22. Ra2 Rbe8 23. a4 $6 Rb8 $6 {
Black remains too passive for the second time.} (23... cxb4 $1 24. Rxb4 fxe4
25. dxe4 e5 {takes the initiative.}) 24. b5 e5 25. Nd5 fxe4 26. dxe4 Rf7 27. a5
$1 bxa5 28. Rxa5 Qg4 29. h3 Qf3 30. Rba1 Rbb7 31. R1a3 Qd1+ 32. Kh2 Qb1 $5 (
32... Nc2 33. Ra2 Nb4 $1 {equalises.}) 33. Ra6 Rbd7 34. h4 h5 35. Re3 Qc1 36.
Rc3 Qd1 $6 (36... Qe1 37. Re3 Qc1 {leads to a repetition.}) 37. Raa3 Qe2 $2 (
37... Qg4 $1 {keeps the active queen.}) 38. Qxe2 Nxe2 39. Re3 Nd4 40. Ra6 $5
Ne6 $4 {Esposito blunders before the time control.} ({Correct is} 40... Nc2 $1)
41. fxe5 Rf2+ 42. Kg1 Rc2 43. Rxd6 Rc1+ 44. Kg2 Rc2+ 45. Kh3 Rf7 46. Rxe6 Rff2
47. g4 Rh2+ 48. Kg3 Rhg2+ 49. Kf4 Rxg4+ 50. Kf3 Rcg2 51. Re2 {
Comrade Kotov scored his first win.} 1-0

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "2"]
[White "Keres, Paul"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "C19"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

{Keres returned to Argentina after eighteen years. He competed with Najdorf
again.} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3
Nbc6 8. a4 Qc7 9. Qd2 b6 $5 ({Usual was} 9... f6) 10. Bd3 Bd7 11. O-O c4 12.
Be2 Nf5 $5 13. Ba3 $1 {Keres takes the initiative.} h5 14. Rfe1 f6 15. Bf1
O-O-O $1 16. g3 Kb7 17. Bh3 Rde8 18. Re2 Ka8 $5 19. Rae1 Qc8 $1 {
Eliskases defends himself solidly.} 20. Bxf5 exf5 21. Nh4 fxe5 22. dxe5 Be6 23.
Ng6 $5 Rh6 24. Nf4 Qd7 25. Rd1 Rd8 $2 {Black should sacrifice a pawn.} (25...
h4 $1 26. Nxd5 hxg3 27. fxg3 Bxd5 28. Qxd5 Qxd5 29. Rxd5 Rhe6 {
blockades the extra pawn.}) 26. Bd6 Bf7 27. h4 $1 Rxd6 $5 {Desperation.} (27...
Kb7 $6 28. Qe3 Re8 29. Qf3 Ne7 30. a5 {attacks over a broad front.}) 28. exd6
Qxd6 29. Qe3 Qa3 $5 30. Qf3 $5 g6 31. Nxd5 Kb7 32. Re7+ $1 Nxe7 33. Nxe7+ Ka6 (
{The pointe is} 33... Kc7 34. Qc6+ Kb8 35. Rxd8#) 34. Rxd8 Qxe7 35. Rd1 Qe6 36.
a5 Be8 37. axb6 Bc6 38. Ra1+ Kxb6 39. Qf4 Qe4 40. Qb8+ Bb7 41. Qd6+ {
Keres had defeated a strong opponent.} 1-0

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "3"]
[White "Lombardy, William"]
[Black "Mangini, Jose"]
[Result "1-0"]
[ECO "E52"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

{Lombardy was the American world champion of the youth.} 1. d4 Nf6 2. c4 e6 3.
Nc3 Bb4 4. e3 d5 5. Nf3 O-O 6. Bd3 b6 7. O-O Bb7 8. a3 Bxc3 9. bxc3 Nbd7 10.
cxd5 exd5 11. Nd2 $5 ({Theory is} 11. c4) 11... c5 12. Bb2 c4 $5 13. Bc2 b5 $6
14. a4 $1 {White counters on the queenside.} a6 15. Re1 Re8 16. f3 $1 Qc7 17.
Ba3 Nb6 18. axb5 axb5 19. Nf1 $5 {He postpones the advance in the centre.} Ra6
20. Bb4 Rxa1 21. Qxa1 Bc6 22. Ng3 $1 g6 23. Qc1 Qb7 24. e4 $1 {
This move seems to cost a pawn.} dxe4 25. Nf5 $1 {
William follows up with another sacrifice.} exf3 $2 ({Not} 25... gxf5 $2 26.
Qg5+) ({Correct is} 25... Qd7 $1 26. fxe4 Nxe4 27. Bxe4 Bxe4 28. Ne7+ Rxe7 29.
Bxe7 Qxe7 30. Qf4 f5 31. Qb8+ Kf7 32. Qxb6 {and White has little advantage.})
26. Rxe8+ Nxe8 27. Qh6 $1 {He threatens Qf8#.} Nd7 28. Ne7+ Kh8 29. Bxg6 $1 f2+
({The pointe is} 29... fxg6 30. Nxg6+ Kg8 31. Ne7+ Kh8 32. Nxc6) 30. Kxf2 Nef6
31. Bf5 Bxg2 32. Qf4 $2 (32. d5 $1 Be4 33. Bc5 $1 Bxf5 34. Bd4 $1 {
wins for White.}) 32... Nh5 $2 {Black misses the opportunity.} (32... Bh1 33.
Bh3 Qb8 {defends well.}) 33. Qg4 $1 Ndf6 34. Qxg2 Qa7 35. Qf3 Qa1 36. Kg2 Qc1
37. Bd6 Qd2+ 38. Kh3 b4 39. cxb4 {The young talent showed attacking wit.} 1-0

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "6"]
[White "Wexler, Bernardo"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E69"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O e5 7. d4 Nbd7 8. h3
c6 9. e4 Qb6 10. Re1 $5 exd4 11. Qxd4 Nc5 $1 {White cannot pick up a pawn.} 12.
Qd2 ({Avoids} 12. Qxd6 $2 Rd8 13. Qe7 Rd7 14. Qe5 Nd3) 12... Be6 13. Bf1 d5 $1
14. cxd5 cxd5 15. exd5 Rad8 $1 16. Qc2 $2 ({The courageous} 16. dxe6 $1 Rxd2
17. exf7+ Rxf7 18. Bxd2 $1 {gains sufficient material for a queen.}) 16... Nxd5
17. Nxd5 Bxd5 18. Be3 Qxb2 19. Qxc5 Bxf3 20. Qxa7 Ra8 21. Qc5 $5 Rfc8 22. Qe7
Bf6 23. Qd6 Be5 24. Qe7 Re8 $5 25. Qh4 Bd5 26. a4 Bf6 27. Qf4 Be5 28. Qh4 Bc3
29. Reb1 $2 {White is going to lose an exchange.} (29. Red1 $1 Qxa1 30. Rxa1
Bxa1 31. Qb4 {defends well.}) 29... Qc2 $1 30. Rc1 Qf5 $1 31. Qf4 ({
The pointe is} 31. Rxc3 Qf3 $1) 31... Qxf4 32. Bxf4 Bxa1 33. Rxa1 Bc6 34. a5
Rad8 35. Rc1 Re6 36. Bc4 Re4 37. Be3 $2 Rxc4 $1 {Najdorf was very productive.}
0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "7"]
[White "Kotov, Alexander"]
[Black "Sanguineti, Raul"]
[Result "0-1"]
[ECO "E16"]
[Annotator "JvR"]
[PlyCount "140"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

{Keres, Kotov, Lombardy, Najdorf and Panno competed for the first place during
the beginning of the event.} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+
6. Bd2 Be7 7. Nc3 d5 8. Ne5 O-O 9. O-O c6 10. Bf4 Nfd7 11. cxd5 $5 cxd5 12. Ng4
f5 13. Ne5 Nxe5 14. Bxe5 Nc6 15. Bf4 Rc8 16. Rc1 a6 17. h4 Na5 18. b3 b5 19.
Nb1 Qb6 20. Qd2 Nc6 21. e3 Na7 22. Rxc8 Rxc8 23. Rc1 b4 24. Rxc8+ Bxc8 25. Qc2
Bd7 26. Bf1 Qb7 27. Qc7 Qxc7 28. Bxc7 {The chances in the endgame are equal.}
Bb5 29. Bb6 Bxf1 30. Kxf1 Nb5 31. Ke2 Kf7 32. Kd3 Ke8 33. Nd2 Nc3 34. Kc2 Kd7
35. Ba5 Nxa2 36. Nb1 Kc6 37. Kb2 Kb5 38. Bc7 Nc3 39. Nxc3+ bxc3+ 40. Kxc3 {
White has to be careful in the bishop ending.} Bb4+ 41. Kc2 Be1 42. f3 $2 {
The protection of the pawns e3 and g3 is weakened.} ({Correct is} 42. Kd1 $3
Bxf2 $5 43. Ke2 Bg1 44. Bd6 {and Black cannot breach the fortress.}) 42... g6
43. Bd6 Bb4 44. Bf4 $5 ({The exchange} 44. Bxb4 Kxb4 45. Kb2 h6 $1 46. Kc2 Ka3
47. Kc3 g5 48. hxg5 hxg5 49. Kc2 g4 50. f4 Ka2 51. Kc3 Kb1 $1 {
brings a won pawn ending.}) 44... Be7 45. Kc3 Bd8 46. Kc2 Kb4 47. Bd6+ Ka5 48.
Bf4 Kb5 49. Kc3 Be7 50. Be5 g5 $1 51. h5 g4 $1 52. fxg4 ({Avoids} 52. f4 $2 Bh4
$1) 52... fxg4 53. Bf4 Bf8 $1 54. Kc2 Kb4 55. Kb2 Be7 56. Kc2 Ka3 $1 57. Kc3
Ka2 58. Kc2 Bf8 {It is zugzwang.} 59. e4 $5 {Kotov makes a desperate move.} (
59. Bg5 Bd6 $1 60. Bf4 Bxf4 61. exf4 h6 62. Kc3 Ka3 63. Kc2 Kb4 64. Kb2 a5 $1
65. Kc2 a4 {wins for Black because pawn d4 will fall, eventually.}) 59... dxe4
60. Kc3 a5 61. Kc2 Bb4 62. Be3 Bd6 63. Bf2 Bc7 64. Kc3 e3 65. Bxe3 Bxg3 66. Bd2
Bd6 67. Kc4 g3 68. d5 exd5+ 69. Kxd5 Bb4 70. Bf4 g2 {
Kotov was out of the race for the top.} 0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "7"]
[White "Lombardy, William"]
[Black "Keres, Paul"]
[Result "0-1"]
[ECO "E45"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ba6 6. a3 Be7 7. Nf4 d5 8. cxd5
Bxf1 9. dxe6 Ba6 10. exf7+ Kxf7 11. e4 $5 {
White has sacrificed a bishop for two pawns.} ({The alternative is} 11. Qb3+
Ke8 12. Ne6 Qd7 {(Lipiniks - Pachman, Buenos Aires 1955).}) 11... c5 $5 (11...
Bc4 $1 12. e5 Nc6 $1 13. Be3 Re8 $1 {
stops the white attack at the cost of a piece.}) 12. Be3 $6 (12. e5 $1 Qxd4 13.
e6+ $1 Kf8 14. Qf3 Nc6 15. Qxc6 Rc8 16. Qf3 {slightly favours White.}) 12...
Nc6 13. Qb3+ c4 14. Qd1 $5 Bd6 15. e5 Nxe5 $1 {
Keres returns the extra  material.} 16. dxe5 Bxe5 17. Nfd5 $2 ({Better is} 17.
Qa4 Qc8 18. O-O) 17... Re8 18. Nxf6 Qxf6 $5 19. O-O Bb7 20. Qg4 Qe6 21. Qxe6+
Rxe6 {He has a positional advantage due to the two bishops and pawn majority
on the queenside.} 22. Rad1 Bc6 23. Bd4 Bc7 24. f3 b5 25. Rfe1 Rxe1+ 26. Rxe1
a5 27. Ne4 h6 28. Bf2 Re8 29. Bd4 b4 30. axb4 axb4 31. Bc5 $5 Bxe4 32. fxe4 Be5
$5 33. Rc1 $5 c3 $1 34. bxc3 Bxc3 35. Rf1+ Ke6 36. Rb1 Rb8 37. Kf2 b3 38. Ke2 (
{Or} 38. Ke3 b2 39. Bd4 Bxd4+ 40. Kxd4 Rb7 41. e5 h5 42. Ke4 Rb4+ {
and Black wins the rook ending.}) 38... b2 39. Kd3 Be5 40. g3 Rd8+ 41. Ke3 {
Lombardy was out of the race for the first place.} 0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "8"]
[White "Cuellar Gacharna, Miguel"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B91"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 Be7 8. Bg2
Be6 9. O-O O-O 10. a4 a5 11. b3 Na6 12. Bg5 $5 ({Known is} 12. h3 $6) 12... Nd7
13. Bxe7 Qxe7 14. Nb5 Ndc5 15. c4 $5 (15. Qxd6 $5 Qxd6 16. Nxd6 Nb4 17. Rac1
Rad8 18. Rfd1 b6 $1 {slightly favours Black.}) 15... Nb4 16. Nec3 Rad8 17. Re1
Qg5 18. Rb1 $5 f5 $1 19. Nc7 f4 20. Nxe6 Nxe6 21. Nd5 fxg3 22. hxg3 Nd4 23. Ne3
$6 ({Correct is} 23. f4 $1 Qh6 $1 ({not} 23... Qxg3 $4 24. Re3 $1) 24. Nxb4
axb4 25. Rb2 {and White defends properly.}) 23... g6 24. Rb2 Rd7 25. Nf1 $6
Rdf7 26. Nh2 $6 {White plays passively.} h5 $1 27. Rf1 Kg7 $5 28. Kh1 $2 {
The lamb will be slaughtered.} (28. Rd2 $1 h4 29. gxh4 Qxh4 30. Rxd4 $1 exd4
31. Qxd4+ Qf6 32. Qxf6+ Kxf6 33. Rd1 Ke6 34. f3 {offers a stubborn resistance.}
) 28... h4 $1 29. f4 $5 Qh6 $5 30. Ng4 Qh5 31. f5 $5 hxg3+ 32. Kg1 gxf5 33.
exf5 Rxf5 34. Rxf5 Rxf5 35. Bh1 Nbc2 36. Rxc2 Nxc2 37. Be4 (37. Qxc2 Rf1+ $5
38. Kxf1 Qxh1+ 39. Ke2 Qg2+ 40. Kd1 Qxc2+ 41. Kxc2 g2 {wins nicely.}) 37... Ne3
$1 {Najdorf got the chance to show his attacking ability.} 0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "10"]
[White "Lombardy, William"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "E63"]
[Annotator "JvR"]
[PlyCount "170"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nc6 7. Nc3 a6 {
He plays the Panno Variation with ..a6.} 8. b3 Bg4 9. Be3 $5 Qd7 10. Qd2 Rab8
11. Rac1 Rfc8 12. Rfd1 Bxf3 13. exf3 e6 14. d5 Ne7 15. dxe6 fxe6 16. Ne4 Nf5
17. Ba7 Ra8 18. Be3 Qe7 19. Bg5 Qf7 20. Bxf6 Bxf6 21. f4 Be7 22. Re1 Re8 23. c5
d5 24. Ng5 $1 Bxg5 25. fxg5 Rad8 26. Re5 Ne7 27. f4 Nc6 28. Re3 e5 $1 29. fxe5
Rxe5 30. Rf3 Qe7 31. Rf6 d4 $1 32. Qd3 Rxg5 33. Qc4+ Kg7 34. Re6 Qf7 35. Rce1
Rd7 36. Bxc6 bxc6 37. Rxc6 $2 (37. Re7 $1 Rxe7 38. Qxd4+ Kh6 39. Qh4+ Kg7 40.
Qd4+ {leads to perpetual check.}) 37... Qxc4 38. bxc4 d3 $1 39. Rd1 d2 40. Kf2
$2 a5 $2 (40... Rf5+ 41. Ke2 Re5+ 42. Kf2 Rf7+ {wins for Black.}) 41. Re6 Rxc5
42. Re2 Rxc4 43. Rdxd2 Rxd2 44. Rxd2 {
Panno has an extra pawn in the rook ending.} Kf6 45. Ke3 Ke5 46. Rd7 h5 $1 47.
Kd3 Rc5 $5 48. Rf7 Ke6 49. Rf4 Rg5 50. Kc4 $2 Rg4 $1 51. a4 $1 Rg5 $2 {
He hesitates.} (51... Ke5 $1 52. Kb5 Rxf4 53. gxf4+ Kd4 $1 {wins for Black.})
52. Rf2 Kd7 53. Rf6 Kc8 54. Rf7 Kb7 55. Rf6 c6 56. Rf8 Kc7 57. Rg8 Kd6 58. Rd8+
Ke5 59. Kc5 Rg4 60. Kxc6 Rxa4 61. Rd5+ Kf6 62. Kb5 $2 ({Better is} 62. Rd6+ $1
Kg7 63. Rd3) 62... Ra2 $1 63. h4 Ra3 $1 64. Rd6+ Kg7 65. Rd7+ Kh6 66. Rd1 Rxg3
67. Kxa5 Rb3 (67... Rg4 $1 68. Rh1 g5 $1 {wins at once.}) 68. Ka4 Rh3 $5 69.
Rd4 Rg3 70. Kb4 Kg7 $1 71. Kc5 Kf6 72. Kd5 Kf5 73. Rd1 Rg4 74. Rf1+ Rf4 75. Rh1
g5 $1 {Oscar applies the right plan.} 76. hxg5 Kxg5 77. Ke5 h4 78. Rg1+ Rg4 79.
Rh1 Rg2 80. Ke4 Kg4 81. Ra1 h3 82. Ra8 Re2+ 83. Kd3 Re5 84. Rh8 Rh5 85. Rg8+
Kh4 {Panno, Najdorf and Keres were fighting at the top.} 0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "11"]
[White "Panno, Oscar"]
[Black "Kotov, Alexander"]
[Result "0-1"]
[ECO "D29"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3
Bb7 9. Rd1 Nbd7 10. Nc3 cxd4 $6 11. exd4 b4 $2 ({Correct is} 11... Bd6 12. d5
e5) 12. d5 $1 (12. Ne5 $5 Qb6 13. Na4 Qb5 14. Bc4 Qxa4 15. b3 Qa5 16. Nxf7 $1 {
should have won in Lukacs - Onischuk, Budapest 1993.}) 12... bxc3 13. dxe6 fxe6
14. Ne5 $2 {Panno blockades the pawn that he should conquer.} ({
He misses the win} 14. Ng5 $1 c2 15. Rd3 $1 Qb6 16. Nxe6) 14... Qb6 $5 15. Ba4
$5 O-O-O 16. Nf7 Bc5 17. Nxh8 Rxh8 18. bxc3 Rd8 {Black has escaped.} 19. Bf4 $6
({Better is} 19. Bg5 $1) 19... Nd5 $1 20. Bd2 e5 $6 21. c4 $1 Nc7 22. Be3 Bxe3
23. fxe3 Qg6 24. Rab1 $5 Be4 $5 25. Rb2 $2 {White is even going to lose.} (25.
Qd2 $1 Bxb1 26. Bxd7+ Rxd7 27. Qxd7+ Kb7 28. Rd2 Qb6 29. c5 {
attacks the black king.}) 25... Nc5 $1 26. Rxd8+ Kxd8 27. Rb8+ Ke7 28. Bd1 Nd7
29. Rb2 Ne6 30. Qf2 Nec5 31. Be2 Nf6 32. h3 h6 33. Kh2 Bc6 34. Rb6 Nfd7 35. Rb2
e4 36. Bg4 $2 Qd6+ 37. Qg3 Ne5 $1 38. Be2 g5 39. Kh1 Ncd3 $1 40. Rb1 Nxc4 41.
Qg4 $2 {Panno would also be defeated by Keres and was out of the race for the
first place.} 0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "11"]
[White "Rossetto, Hector"]
[Black "Keres, Paul"]
[Result "0-1"]
[ECO "C46"]
[Annotator "JvR"]
[PlyCount "44"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 g6 4. d4 exd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Be2 O-O 8.
Qd2 $5 ({Theory is} 8. O-O {(Wittek - Steinitz, Wien 1882).}) 8... Re8 $1 9. f3
d5 $1 10. Nxc6 bxc6 11. exd5 $2 ({Better is} 11. O-O dxe4 12. Qxd8 Rxd8 13.
fxe4) 11... Nxd5 12. Nxd5 cxd5 $6 (12... Qxd5 $1 13. Qxd5 cxd5 14. Kf2 Bxb2 {
gains a pawn.}) 13. c3 $2 (13. Rd1 Bxb2 14. Kf2 Bb7 15. c3 {
achieves some counter-play.}) 13... c5 $2 (13... Ba6 $1 14. Bxa6 Bh6 $1 {
wins the game.}) 14. O-O $6 d4 $6 15. Bf2 Qa5 $6 16. Rfc1 $6 (16. b4 $1 dxc3
17. Qd5 $1 Qd8 $1 18. Qxa8 Rxe2 19. Rae1 Rxe1 20. Rxe1 cxb4 {
leads to great complications.}) 16... Bf5 17. Bc4 Rad8 18. Qg5 $6 (18. Bh4 $5
dxc3 19. Bxd8 cxd2 20. Bxa5 dxc1=Q+ 21. Rxc1 Bxb2 {costs a pawn.}) 18... dxc3
19. bxc3 Bxc3 20. Rxc3 Qxc3 21. Rc1 Qb2 22. Be1 h6 $1 {
Keres and Najdorf stayed in the race for the first prize.} ({The pointe is} 
22... h6 23. Qxh6 Rxe1+ $1 24. Rxe1 Qd4+ 25. Qe3 Qxc4) 0-1

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "12"]
[White "Keres, Paul"]
[Black "Cuellar Gacharna, Miguel"]
[Result "1-0"]
[ECO "B66"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8.
O-O-O h6 9. Bf4 Bd7 10. Nxc6 Bxc6 11. f3 d5 12. Qe1 Be7 13. exd5 exd5 14. Ne2
O-O 15. Nd4 Bd6 16. Qd2 Bxf4 $5 (16... Re8 17. g4 Bxf4 18. Qxf4 Qa5 {
occurred in Keres - Wexler, round 8.}) 17. Qxf4 Nh5 18. Qd2 Qg5 19. g3 Qxd2+
20. Kxd2 $1 Bd7 21. Bd3 Rfe8 22. Rhe1 Kf8 23. Kc3 $1 {
Keres has a positional plus, due to the strong blockader.} Rec8+ $6 {
Exchange would be wiser.} 24. Kb3 Nf6 25. h4 Ng8 $6 26. Re5 $6 Rc5 $6 (26...
Ne7 $1 27. c3 f6 {chases back the intruder.}) 27. Rde1 $1 Rac8 $6 28. c3 Ra5 $6
29. a3 $1 Rac5 $6 {Black makes a number of useless moves.} 30. g4 $1 a5 31. g5
hxg5 $6 {The open h-file will help White.} 32. hxg5 g6 $5 33. f4 $1 {
The restraint increases.} Re8 $2 ({No material loses} 33... Kg7 $1 34. f5 Bxf5
35. Nxf5+ gxf5 36. Rxf5 R8c7) 34. Rxe8+ Bxe8 35. Bxg6 $1 {White wins a pawn.}
a4+ 36. Kc2 Ne7 37. Bd3 Nc6 38. Kd2 Na5 39. f5 Nc4+ 40. Kc1 Bd7 41. f6 $1 Rc8
42. Rh1 $1 {
The tournament hall until round thirteen was Hotel Provincial in Mar del Plata.
} ({The pointe is} 42. Rh1 Kg8 43. Bh7+ Kf8 44. Bf5 $1 {and White wins a piece.
}) 1-0

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "15"]
[White "Najdorf, Miguel"]
[Black "Kotov, Alexander"]
[Result "1-0"]
[ECO "E55"]
[Annotator "JvR"]
[PlyCount "55"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

{The event continued at the Club Argentino de Ajedrez (Buenos Aires) in round
fourteen. Najdorf and Keres led by half-a-point on Kotov, when the fifteenth
round began.} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 d5 6. Bd3 c5 7.
O-O dxc4 8. Bxc4 Nbd7 9. Qe2 a6 10. a4 $5 ({An alternative is} 10. a3 Ba5 11.
dxc5 Bxc3 12. c6 {(Unzicker - Rabar, Opatija 1953).}) 10... Nb6 11. Bb3 cxd4
12. exd4 Bd7 13. Rd1 Rc8 14. Rd3 $5 {Najdorf wants the initiative.} Nbd5 15.
Nxd5 Nxd5 16. Qe4 $1 Bc6 17. Ne5 Nf6 $5 18. Qh4 Bd5 $2 {
Kotov loses a decisive tempo.} (18... Ne4 $1 {(Najdorf)} 19. Qxd8 Rfxd8 20.
Nxc6 Rxc6 {keeps the equality.}) 19. Bg5 $1 {The attack begins.} Be7 $6 ({
Better is} 19... Bxb3 20. Rxb3 Be7 21. Rxb7 h6 22. Bxh6 $1 gxh6 23. Qxh6 Nh7
24. Rb3 Bg5 25. Rg3 Qxd4 26. Rxg5+ Nxg5 27. Qxg5+ {but White has the advantage.
}) 20. Rh3 $1 Re8 21. Bd1 $5 (21. Bc2 $3 {(threatens Bxh7+)} Rxc2 22. Bxf6 Bxf6
23. Qxh7+ Kf8 24. Qxc2 {wins for White.}) 21... Qa5 $6 (21... Kf8 $1 22. Qf4
Kg8 $1 23. Be2 $1 Qc7 24. Bd3 Bd8 {offers more resistance.}) 22. Bh5 $1 Red8 ({
Or} 22... Rf8 23. Bxf6 Bxf6 24. Bxf7+ $1 Rxf7 25. Qxh7+) 23. Bxf7+ Kf8 (23...
Kh8 24. Ng6#) 24. Bh6 $1 Ne8 25. Qf4 $1 Bf6 26. Bxg7+ $1 Ke7 27. Bxe8 Bxg7 28.
Rxh7 {Najdorf crushed a main competitor and took the sole lead, because Keres
drew against an outsider.} 1-0

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "16"]
[White "Panno, Oscar"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "C00"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 Be7 5. Bg2 O-O 6. Ngf3 c6 7. O-O b5 8. Re1
Bb7 $5 ({Eliskases had played} 8... Nfd7 {in round 12.}) 9. e5 Nfd7 10. Nf1 Re8
$5 11. h4 Nf8 $5 {
Eliskases strengthens the defence before he advances on the queenside.} 12.
N1h2 c5 13. Ng4 Nc6 14. h5 Rc8 15. h6 g6 {White cannot reach g7.} 16. a4 b4 17.
Be3 Nd7 18. Qc1 Ba6 19. Qd2 Na5 20. Bg5 c4 21. Bxe7 Qxe7 22. Nd4 Rb8 $2 {
Black awaits a passive defence.} (22... cxd3 23. cxd3 Qc5 $1 24. Qe3 Nc6 25.
Nxc6 Qxe3 26. Nxe3 Rxc6 {makes useful exchanges.}) 23. dxc4 $1 Nxc4 24. Qf4 $1
Bb7 25. b3 Na5 26. Bf1 a6 27. Bd3 Rec8 28. Re3 Nc6 29. Nf3 Rc7 30. Ng5 Rbc8 31.
Rae1 Nd8 32. R3e2 Rc3 33. Kh2 R8c7 34. Kg1 Bc8 35. Rd2 R3c6 36. Nf3 Rb6 37. Qe3
Rb8 38. Bf1 Rc3 39. Bd3 Nc6 40. Qf4 Bb7 {They have reached the time control.}
41. Ng5 $1 {Panno wants to win. He prepares a sacrifice on g6.} Bc8 $6 ({Not} 
41... Rf8 $2 42. Nf6+ Nxf6 43. exf6 Qd8 44. Bxg6 $1 hxg6 45. h7+ Kh8 46. Ne4 $1
{and White wins.}) (41... Re8 $1 {utilizes the queen's rook for the defence.})
42. Bf1 $5 {Another threat is made.} Ra8 $2 {Eliskases misses the pointe.} ({
Correct is} 42... Rc5 $1 43. Re3 Ra8 44. Rf3 Nd8 45. c4 $1 bxc3 46. Rc2 {
and White charges.}) 43. Rxd5 $1 exd5 44. e6 $1 fxe6 45. Rxe6 Qf8 46. Qxf8+
Kxf8 47. Nxh7+ Kg8 48. Ng5 Bb7 49. Rxg6+ Kf8 ({Or} 49... Kh8 50. Nf7+ Kh7 51.
Rg7#) 50. h7 {The standings at the top at the end of the penultimate round
were: Keres and Najdorf 14/16, Kotov 13 and Panno 12.} 1-0

[Event "Mar del Plata"]
[Site "20"]
[Date "1957.??.??"]
[Round "17"]
[White "Najdorf, Miguel"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "E90"]
[Annotator "JvR"]
[PlyCount "128"]
[EventDate "1957.03.??"]
[SourceDate "1999.07.01"]

{Najdorf had a hard opponent in the last round.} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
4. e4 d6 5. Nf3 O-O 6. Bg5 c5 7. d5 e6 $5 {
They play a rare line of the King's Indian Defence.} 8. Nd2 ({
The alternative will become} 8. Be2 $5) 8... h6 9. Bh4 a6 10. a4 Nbd7 11. Be2
Re8 12. f4 Qb6 13. Ra3 $5 e5 14. f5 $1 gxf5 15. exf5 e4 $1 {
Panno creates an opening in his crammed position.} 16. a5 Qc7 17. Qc2 e3 $1 18.
Nde4 Nxe4 19. Nxe4 Bxb2 20. Rxe3 $1 Qxa5+ 21. Kf1 $5 {Najdorf wants to attack.}
Bd4 $5 22. Rg3+ Kf8 23. Nxd6 Qa1+ 24. Bd1 $5 Re3 $5 25. Rxe3 Bxe3 {
White has a positional advantage.} 26. g4 Qe5 27. Ne4 b5 28. Kg2 bxc4 29. Re1
Rb8 $1 30. Bg3 Bf4 {Black defends well.} 31. Nxc5 $6 ({Better is} 31. Nc3)
31... Qxd5+ 32. Bf3 Qd2+ $2 (32... Qd4 $1 33. Re4 Rb2 34. Nxd7+ Bxd7 35. Rxd4
Rxc2+ {gains an edge.}) 33. Qxd2 Bxd2 34. Bd6+ Kg7 35. Re2 c3 36. Bxb8 Nxb8 37.
Re8 $2 {Najdorf fails.} (37. Nb3 {ends the game.}) 37... c2 $1 38. Nb3 $2 {
The tables turn.} (38. Nd3 $1 Bd7 39. Rxb8 Bb5 40. Rxb5 axb5 41. Bd5 {draws.})
38... Bd7 39. Rxb8 Ba4 40. Nxd2 ({Or} 40. Be4 Bxb3 41. Rb6 h5 $1) 40... c1=Q {
Keres had won quickly. So Najdorf would not triumph in the event.} 41. Ne4 Qc2+
42. Kh3 Bc6 43. Ng3 Qc3 44. Bxc6 Qxc6 45. Nh5+ Kh7 46. Rf8 Qf3+ 47. Kh4 Qf2+
48. Kh3 Qe3+ 49. Kg2 Qe7 50. Re8 Qd6 51. h4 a5 52. Kh3 Qd3+ 53. Kg2 Qc2+ 54.
Kg3 Qc3+ 55. Kf4 Qd4+ 56. Kg3 Qd6+ 57. Kh3 f6 $6 {
Black could advance his a-pawn.} 58. Re6 Qd3+ 59. Kg2 a4 60. Re7+ $6 (60. Nxf6+
Kg7 $1 61. Nh5+ Kf7 62. Rf6+ Ke7 63. Re6+ Kd8 $1 {also wins for Black.}) 60...
Kg8 61. Rd7 Qc2+ 62. Kf3 Qc6+ 63. Kf2 a3 $1 64. g5 hxg5 {The final standings
became: Keres 15/17, Najdorf 14, Kotov and Panno 13, Lombardy 111/2,
Sanguineti 101/2, Cuellar Gacharna 81/2, Casas, Eliskases and Rossetto 8,
Esposito 71/2, Albert 6, Ader Hauman, Behrensen, Incutto and Wexler 51/2,
Mangini and Rubio Aguado 4. Paul Keres produced by an incredible score.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "1"]
[White "Sanguineti, Raul"]
[Black "Sumar, Julio"]
[Result "1-0"]
[ECO "B63"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

{The twenty-first tournament in Mar del Plata was played from 11 until 31 iii
1958. Larsen and Lombardy were the special guests among the sixteen
participants. The contemplation time was 40 moves in 21/2 hours.} 1. e4 c5 2.
Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Bd7 8. Ndb5 Qa5 9.
Bxf6 gxf6 10. Nxd6+ Bxd6 11. Qxd6 {The opening favours White.} Rd8 $5 (11...
Nb4 {occurred in Michel - Pinzon Solis, Mar del Plata 1952.}) 12. Qf4 $5 ({
Even better is} 12. O-O-O $1 Bc8 13. Qg3) 12... Ke7 13. O-O-O Qg5 14. Qxg5 fxg5
15. Be2 Ne5 16. h4 h6 17. Rh2 $5 a6 18. hxg5 hxg5 19. Rdh1 Rxh2 20. Rxh2 Bc6
21. Rh5 Kf6 22. f3 Ng6 23. g3 Rd4 24. Rh1 Ke5 25. Re1 $5 Kf6 $5 26. Nd1 Ne5 27.
Nf2 Rd8 28. Rd1 Rh8 29. Rh1 Rd8 30. Rh6+ Kg7 31. Rh5 Kf6 32. Nd3 Bb5 33. Rh6+
Kg7 34. Nxe5 $1 Bxe2 35. Rh1 f6 36. Re1 Bb5 37. Nd3 Rh8 $2 (37... Bxd3 38. Rd1
Bxe4 $1 39. Rxd8 Bxf3 {offers a stubborn resistance.}) 38. Nc5 $1 e5 39. Nxb7 {
White has two extra pawns in the endgame.} 1-0

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "2"]
[White "Rossetto, Hector"]
[Black "Lombardy, William"]
[Result "0-1"]
[ECO "D48"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Nc3 dxc4 6. Bxc4 a6 7. O-O b5 8. Bd3
Bb7 9. Qe2 Nbd7 10. Rd1 Qc7 11. e4 cxd4 12. Nxd4 Bc5 13. Nb3 Bb6 $5 (13... Bd6
{was played in Saemisch - Capablanca, Moscow 1925.}) 14. Bg5 Qe5 $5 15. Bh4 O-O
$5 ({More solid is} 15... Nh5 $1 16. Nd2 Nf4 17. Qf3 O-O) 16. Bg3 Qg5 17. e5
Nh5 18. Bxh7+ $1 Kxh7 19. Rxd7 Nxg3 20. hxg3 {
White has won a pawn, but Black has sufficient compensation.} Rab8 21. g4 $2 {
White prevents ..Qxg3.} ({Better is} 21. Rad1 Qxg3 22. Rxb7 $1 Rxb7 23. Qe4+ f5
$1 24. exf6+ {A diagonal has been opened for the black queen.} Kh8 25. Nd4 $1
Qb8 $1 26. Nc6 Qg3 27. Nd4 {and the positions are repeated.}) 21... Qf4 22.
Rad1 Rh8 $1 23. Qd2 $2 (23. R7d4 Bxd4 24. Rxd4 Qh6 25. f3 {prolongs the game.})
23... Qxg4 24. Qc2+ Kg8 25. Rxb7 Rxb7 26. Ne4 Rb8 27. Nbc5 Qh5 28. Ng3 Qxe5 29.
Nd7 Qxg3 $1 30. Nxb6 Qh4 {Lombardy carried out a powerful counteraction.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "3"]
[White "Eliskases, Erich"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "A96"]
[Annotator "JvR"]
[PlyCount "150"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

{Larsen was a 23-years-old chess star from Denmark. He enjoyed the autumn
weather of Mar del Plata at first, but it had rained on the previous day. So
Bent suffered from a cold, when the game began.} 1. d4 f5 2. Nf3 Nf6 3. g3 e6
4. Bg2 Be7 5. c4 O-O 6. O-O d6 7. b3 Qe8 8. Bb2 a5 9. a3 $5 Nbd7 10. Nbd2 Qh5
11. Re1 Ne4 12. e3 Ndf6 13. Nxe4 fxe4 14. Nd2 Qg6 15. f3 $6 {
Eliskases weakens the centre.} exf3 16. Nxf3 Ng4 17. e4 e5 $1 18. Bc3 $5 Bg5 ({
An interesting alternative is} 18... Nxh2 $5 19. Nxh2 Qxg3 20. Qc2 Bg5) 19.
Nxg5 Qxg5 20. Ra2 Qh6 21. Bf3 $2 {Erich hesitates.} ({Larsen prefers} 21. h3 $1
exd4 22. Bxd4 Ne5 23. Bxe5 dxe5 24. Qd5+ {and White has equalised.}) 21... exd4
22. Bxd4 Ne5 23. Bxe5 dxe5 24. Qd3 Be6 25. a4 Rad8 26. Qe3 Qxe3+ 27. Rxe3 Bh3 {
He has the strong bishop.} 28. Ra1 (28. Kf2 $5 Rd1 $1 29. Ke2 Rb1 30. Rc2 {
also favours Black.}) 28... Rd2 $1 29. Rb1 h5 $5 30. Bxh5 Rg2+ 31. Kh1 Rff2 32.
Bf3 Rxh2+ 33. Kg1 g5 $5 34. Rbe1 Rb2 35. R1e2 Rhxe2 36. Bxe2 Be6 37. Kf1 Kf8
38. Ke1 Ke7 39. Kd1 Kd6 40. Kc1 Ra2 41. Kb1 Rd2 42. Kc1 Rd4 {The game was
adjourned. Both players expected a win for Bent, when they resumed.} 43. Kc2
Kc5 44. Kc3 c6 45. Bf3 Rd8 46. Be2 Rh8 47. Bf3 Rh3 48. Bg2 Rh2 49. Bf3 Bf7 $1 {
Larsen wants to exchange the bishops.} 50. Bg4 $2 ({Better is} 50. Rd3 $1 Bh5
51. g4 $1 Bf7 52. Bd1 Bg6 53. Rd7 Rh3+ 54. Kd2 Rh7 $1 55. Rd8 Bxe4 56. Re8 Rd7+
57. Ke3 Rxd1 58. Kxe4 Kb4 {but Black seems to prevail.}) 50... Bh5 $1 51. Bc8 (
51. Bxh5 Rxh5 52. Rf3 Rh3 53. Rd3 g4 {brings a won rook ending (Larsen).})
51... Be2 52. Bxb7 Bg4 $5 53. Rd3 Rg2 54. Bxc6 ({Or} 54. Re3 Bd1 {(Larsen).})
54... Kxc6 55. b4 axb4+ 56. Kxb4 Rb2+ 57. Kc3 Re2 58. a5 Rxe4 59. a6 Be6 60.
Kb2 Rxc4 61. Ra3 Rb4+ 62. Kc3 Rb8 63. a7 Ra8 64. Ra6+ Kd5 65. Kb4 Bd7 66. Ra1
e4 67. Kc3 Bb5 68. Kd2 Kd4 69. Ra3 g4 70. Rb3 Ba6 71. Rb4+ Bc4 72. Ra4 e3+ 73.
Kc2 e2 74. Kd2 Kc5 75. Ra1 Kb6 {Larsen won, despite the flue.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "5"]
[White "Larsen, Bent"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "E63"]
[Annotator "JvR"]
[PlyCount "111"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. Nf3 Bg7 5. g3 O-O 6. Bg2 Nc6 7. O-O a6 8. h3
Rb8 9. e4 b5 10. e5 Ne8 11. Qe2 b4 $2 {
Pilnik leaves the white centre untouched in the Panno Variation.} (11... Na5 $6
12. c5 b4 {was played in Larsen - Olafsson, Reykjavik 1955.}) ({
My preference has} 11... bxc4 $1 12. Qxc4 Rb4 $1 13. Qe2 Nxd4 14. Nxd4 Rxd4 15.
exd6 cxd6) 12. Nd5 $1 h6 13. Rd1 e6 14. Ne3 Ne7 15. Ng4 {
Larsen is going to charge on the kingside.} Kh7 16. Bf4 d5 $2 {
Pilnik should have stopped the attack.} ({Better is} 16... f5 $1 17. exf6 Nxf6
18. Nxf6+ Bxf6) 17. c5 $1 Bd7 18. h4 Bb5 19. Qc2 b3 $6 20. axb3 Rb7 21. Bf1 Qd7
22. Ra3 Bxf1 23. Kxf1 Qb5+ 24. Kg2 c6 25. h5 Nf5 26. Rh1 g5 27. Bxg5 $1 hxg5
28. Nxg5+ Kg8 29. h6 $1 Bh8 30. Ne3 $1 {White threatens to mate quickly.} Bf6
$5 31. exf6 Nxe3+ 32. fxe3 Nxf6 33. Rf1 Ne4 34. Nxe4 dxe4 35. Qxe4 Qe2+ 36. Rf2
Qh5 37. Qf4 f6 38. Ra1 Qd5+ 39. Qf3 Rxb3 40. Qxd5 cxd5 41. Rxa6 Rxe3 42. c6 Kh7
43. c7 Rg8 44. Kh2 Rc8 45. Rc2 Rb3 46. Rxe6 Rb7 47. Rxf6 Rcxc7 48. Rxc7+ Rxc7
49. g4 Rc4 50. g5 Rxd4 51. Kg3 Rd1 52. Rf7+ Kg8 53. Rd7 d4 54. Kf4 d3 55. g6
Rf1+ 56. Ke3 {Larsen scored well in Mar del Plata.} 1-0

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "6"]
[White "Rossetto, Hector"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "E87"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 e5 6. d5 Nh5 7. Be3 f5 8. Nge2 O-O
9. Qd2 a6 10. O-O-O Nd7 11. Kb1 Qe8 $5 ({Usual is} 11... Ndf6) 12. Nc1 Ndf6 13.
Bd3 Kh8 $5 14. Bc2 $5 b5 $1 15. cxb5 axb5 16. exf5 gxf5 17. Nd3 f4 $1 18. Bf2
$6 (18. Bg1 $1 e4 19. fxe4 Nxe4 20. Nxe4 Qxe4 21. Nb4 Qe5 22. Bd4 $1 Qxd4 23.
Qxd4 Bxd4 24. Rxd4 {keeps a plus.}) 18... e4 $1 19. fxe4 Nxe4 20. Nxe4 Qxe4 {
Black attacks two unprotected pawns.} 21. Nb4 Qxg2 22. Rhg1 Qh3 23. Rde1 Bf5
24. Re7 $5 {Great complications start.} ({More solid is} 24. Bd4) 24... Rae8 $1
25. Rxc7 f3 $1 26. Bd4 $6 Bxd4 27. Qxd4+ Re5 $6 (27... Nf6 $1 {achieves a plus.
}) 28. Nd3 $1 Bxd3 29. Bxd3 Nf6 30. Qf4 $2 ({Better is} 30. Rf1 b4 31. Qg1 Nd7
32. Qg3) 30... f2 $1 31. Rg3 Re1+ 32. Rc1 Rxc1+ $2 (32... Qc8 $1 33. Qg5 Qxc1+
34. Qxc1 Rc8 {wins for Black.}) 33. Kxc1 Qc8+ 34. Kd2 Qc5 35. Qg5 $4 {
White threatens mate in one.} ({Correct is} 35. Rg5 $1 Nd7 36. Rf5 Rc8 37. Ke2
Re8+) 35... f1=N+ $1 {Larsen ends the game elegantly.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "9"]
[White "Larsen, Bent"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "B68"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

{Larsen had scored 71/2/8.} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10. Nf3 b5 11. e5 b4 12. exd6 ({
Usual is} 12. exf6 bxc3 13. Qxc3 gxf6) 12... bxc3 13. Qxc3 Bf8 14. f5 Qa5 $1 {
Panno gives an excellent answer to a risky line.} (14... h6 $6 15. Bc4 $2 hxg5
16. fxe6 fxe6 17. Bxe6 Qb6 $1 {
won for Black in Winiwater - Plater, Szczawno Zdroj  1957.}) 15. fxe6 fxe6 16.
Bxf6 gxf6 17. Qxf6 Rg8 18. Bc4 Bg7 19. Qh4 Rb8 $1 20. Bb3 Rxb3 $1 21. axb3 Qa1+
22. Kd2 Qxb2 23. Qxh7 Rf8 24. Qh5+ $2 (24. Ke2 $5 {
will draw in Holaszek - Minaya Molano, Den Haag 1961.}) 24... Kd8 $2 ({
Better is} 24... Rf7) 25. Qh4+ Ke8 26. Qh5+ $2 (26. Qe4 $1 Qc3+ 27. Ke2 {
leads to mutual chances.}) 26... Rf7 $1 {He finds the right move.} 27. Qc5 $6 (
27. Rhf1 $5 Qc3+ 28. Ke2 Qxc2+ 29. Nd2 Nd4+ 30. Ke1 {offers more resistance.})
27... Rf5 $1 28. Qc4 Ne5 29. Nxe5 Bh6+ 30. Kd3 Rxe5 {
Larsen had suffered his only loss.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "10"]
[White "Panno, Oscar"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "A56"]
[Annotator "JvR"]
[PlyCount "214"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 g6 6. Be2 Na6 $5 {
Both players like lengthy manoeuvres in closed positions.} 7. Nf3 Bg7 8. O-O
Bg4 $6 9. Ne1 Bxe2 {Pilnik exchanges his strong bishop.} 10. Qxe2 O-O 11. Bg5
h6 12. Bd2 Nc7 13. Nd3 Nd7 14. a3 Kh7 15. b4 b6 16. Rab1 Qe7 17. bxc5 dxc5 18.
f3 {Panno controls more territory.} Ne8 19. Nf2 Nd6 20. a4 Rfb8 21. Rb2 Rb7 22.
Rfb1 Rab8 23. Nb5 Nxb5 24. Rxb5 $5 Nf6 25. Nd1 Ne8 26. Nc3 Qd7 27. Be3 Bf8 28.
Bf2 f6 29. Qa2 Nc7 $5 30. R5b3 Na6 31. h3 Nb4 32. Qe2 a5 {
He has stabilised the queenside.} 33. Nb5 Re8 34. Kh2 Qd8 35. Rd1 Rd7 36. Rbb1
Bd6 37. Be1 Kg7 38. Bc3 Bb8 39. g3 Kh7 40. Rf1 Qe7 41. Rbe1 Qf7 42. Kg2 g5 $5 {
Square f5 becomes a weakness.} 43. h4 $1 Rg8 44. Rh1 Rg6 45. hxg5 fxg5 46. g4
$5 {White controls f5.} Qe8 47. Bb2 Rf7 48. Rh3 Na6 49. Nc3 $1 Bd6 $2 {
A great manoeuvre should be countered.} (49... Nc7 $1 50. Ra1 Qd7 51. Nd1 Ne8
52. Ne3 Ng7 $1 53. Nf5 Nxf5 54. exf5 Rgf6 {exchanges the knights timely.}) 50.
Qc2 Nb8 51. Nd1 $1 Nd7 52. Ne3 $1 Bf8 53. Nf5 $1 {
The knight has reached his aim.} Rff6 54. Qb3 Qb8 55. Bc3 Qc7 56. Rd1 Qd8 57.
Rd3 Qc7 58. Rh1 Bd6 59. Qb5 Qd8 60. Qc6 Kg8 61. Rb1 Kh8 62. Rd2 Kg8 63. Qb7 Rf7
64. Qc6 Rff6 65. Ra1 Qe8 66. Kg3 Qd8 67. Rda2 Bf8 68. Qb5 {
White makes little progress.} Qe8 69. d6 $1 {He opens the centre somewhat.} Qe6
70. Rd2 Rf7 71. Rd5 Kh7 72. Qb2 Qf6 73. Rad1 Bg7 74. R1d3 Bh8 75. Qh2 Qd8 76.
Rd1 Qf8 77. Rh1 Bg7 78. Qd2 Bf6 79. Kf2 Qe8 80. Qb2 Qe6 81. Ke3 Qe8 82. Qb5 Qd8
83. Qc6 Qf8 84. Ke2 Qe8 85. Bxa5 $1 {The breakthrough costs a piece.} bxa5 86.
Rxc5 $1 Bd8 87. Rb1 Qe6 88. Rd5 Qf6 89. c5 $5 Nf8 $1 90. Rd2 $6 ({Better is} 
90. Qb5 $1 Ne6 91. c6 $1 Nf4+ 92. Ke1 {and White wins.}) 90... Ne6 91. Kf2 Nd4
$6 {White gets a new chance.} 92. Qd5 $1 h5 93. Rb7 $5 Rgg7 94. Rdb2 $5 Nxf5 $5
95. exf5 $2 (95. Rxf7 $1 Rxf7 96. exf5 e4 97. Rc2 {still prevails.}) 95... e4
96. fxe4 Rxb7 97. Rxb7 Rxb7 98. Qxb7+ Kh6 99. gxh5 $2 {The tables turn.} ({
Correct is} 99. Qd5 Qb2+ 100. Ke3 Qc3+ {and Black delivers perpetual check.})
99... Qd4+ $1 100. Kf3 Qd3+ 101. Kg2 Qe2+ 102. Kg3 Bf6 $1 103. Qd5 g4 104. Qe6
Qf3+ 105. Kh2 Kg5 $1 106. e5 Qf2+ 107. Kh1 Kh4 $1 {Pilnik will mate soon.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "10"]
[White "Reinhardt, Enrique"]
[Black "Lombardy, William"]
[Result "0-1"]
[ECO "B26"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Nge2 Nf6 8. h3
O-O 9. O-O Ne8 $5 ({Theory is} 9... b5) 10. Qd2 $5 ({More active is} 10. d4 $1
Qb6 $5 11. d5 Nd4 12. Rb1) 10... Nd4 $1 11. Kh2 $5 {He spoils a tempo.} b5 12.
Nd1 Nxe2 13. Qxe2 Nc7 14. f4 b4 15. c4 $2 (15. a3 $1 a5 16. axb4 axb4 17. c3 $1
{defends properly.}) 15... Ne6 16. g4 $6 ({Preferable is} 16. f5 Nd4 17. Qd2)
16... Rb6 $5 17. Rc1 Ra6 $1 18. b3 Nd4 19. Bxd4 Bxd4 20. Rc2 Ra3 $1 21. Ne3 a5
$1 {Lombardy attacks on the queenside.} 22. g5 $6 {
Reinhardt offers little resistance.} a4 $1 23. f5 $5 ({An alternative is} 23.
bxa4 e5 $1 24. f5 Qxg5 25. Nd5 Rxa4 {and Black has a great advantage.}) 23...
axb3 24. axb3 Rxb3 25. Ng4 Ra3 26. h4 b3 27. Rb2 Qa5 28. Nh6+ Kg7 29. Rbb1 b2
30. fxg6 hxg6 31. Qf3 Be5+ 32. Kh1 Ra1 33. Rbd1 Qb4 34. Rb1 Qd2 35. Qd1 Rxb1 $1
36. Qxb1 Bh3 $1 37. Rg1 Qf4 {Lombardy delivers mate.  Ten rounds had been
played at Hotel Provincial in Mar del Plata. The event continued at the Club
Argentino de Ajedrez in Buenos Aires.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "12"]
[White "Olivera, Alfredo"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "B50"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. e5 dxe5 5. Nxe5 Nbd7 $5 ({Usual is} 5... e6) 6.
f4 e6 7. d4 $5 Nxe5 8. fxe5 Nd5 9. Bb5+ $6 ({Preferable is} 9. Be2 Be7 10. O-O
O-O) 9... Bd7 10. Bxd7+ Qxd7 11. O-O Rc8 12. dxc5 $6 ({Better is} 12. a3 $1
cxd4 13. cxd4) 12... Bxc5+ 13. Kh1 {White lacks development.} O-O 14. Qe2 f5
15. exf6 Rxf6 16. Rxf6 Nxf6 17. Be3 $2 (17. Nd2 $1 Rd8 18. b4 Bb6 19. Nf1 Nd5
20. Bd2 {builds a defence line.}) 17... Bxe3 18. Qxe3 Qd1+ 19. Qg1 Qe2 $1 20.
Na3 $5 (20. b3 Ne4 21. h3 Nf2+ 22. Kh2 Rd8 $1 23. Na3 Qe5+ 24. g3 Rd2 {
wins for Black.}) 20... Qxb2 21. Qe1 e5 $1 22. Qc1 Qe2 {
Bent controls the second rank.} 23. h3 Ne4 24. Qe1 Rxc3 $1 25. Qxe2 Ng3+ 26.
Kh2 Nxe2 27. Nb5 Rc2 28. Rd1 Nf4 29. Rd8+ Kf7 30. Rd7+ Kf6 31. Rxb7 Rxg2+ 32.
Kh1 Rxa2 33. Nxa7 e4 34. Nc6 e3 35. Rb4 Ra1+ 36. Kh2 Nd3 37. Re4 Ra2+ {
The passed pawn will queen soon.  Larsen kept on winning.} 0-1

[Event "Mar del Plata"]
[Site "21"]
[Date "1958.??.??"]
[Round "13"]
[White "Eliskases, Erich"]
[Black "Reinhardt, Enrique"]
[Result "1-0"]
[ECO "E74"]
[Annotator "JvR"]
[PlyCount "93"]
[EventDate "1958.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. d4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5 7. d5 Qa5 8. Bd2 e6
9. Nf3 exd5 10. exd5 Qd8 $5 11. O-O Re8 12. Qc1 Ne4 $5 13. Nxe4 Rxe4 14. Bd3
Re8 {Black retreats again.} 15. Bc3 Bg4 16. Bxg7 Kxg7 17. Qc3+ Qf6 18. Qxf6+
Kxf6 19. Nd2 Bf5 20. Bxf5 gxf5 21. Rfe1 {
White has little advantage in the endgame.} Nd7 22. f4 a6 23. a4 a5 $6 {
Black ends the counter-play on the queenside.} 24. Kf2 Nb6 25. b3 $1 {
He closes the flank.} Nd7 26. h3 Kg6 27. Nf3 h5 28. Nh4+ Kf6 29. Rxe8 Rxe8 30.
Re1 Rh8 $5 31. Re3 Nb8 $2 ({Better is} 31... Rg8 32. Rg3 Rxg3 33. Kxg3 Nf8 34.
Nf3 Ng6 {and Black has a fortress.}) 32. Rg3 $1 {White is going to gain a pawn.
} Na6 33. Rg5 Nb4 34. Nxf5 Nd3+ 35. Ke3 Nc1 36. Nxd6 Nxb3 37. Ne4+ Ke7 38. d6+
Kd7 39. Nxc5+ Nxc5 40. Rxc5 b6 41. Rb5 Rg8 $5 42. Rxb6 Rxg2 43. c5 Rg3+ 44. Kd4
Rxh3 45. Rb7+ Kc8 46. c6 Ra3 47. d7+ {The final standings became: Larsen 12/15,
Lombardy 11, Panno, Eliskases and Sanguineti 91/2, Pilnik 9, Emma 8, Rossetto
71/2, Foguelman and Reinhardt 7, Letelier Martner and Casas 61/2, Sumar 5,
Olivera 41/2, Behrensen 4, Pelikan 31/2. So the special guests defeated the
Argentinians.} 1-0

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.03.23"]
[Round "1"]
[White "Sanguineti, Raul"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "E21"]
[Annotator "JvR"]
[PlyCount "142"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

{The twenty-second tournament in Mar del Plata occurred from 23 iii until 9 iv
1959. Fifteen men played in Hotel Provincial. Special guests were Pachman,
Fischer and Ivkov.} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. g3 Bxc3+ 6. bxc3
Bb7 7. Bh3 $5 ({Theory is} 7. Bg2) 7... O-O 8. O-O d6 9. Bg5 h6 10. Bxf6 Qxf6
11. Qd3 e5 12. e4 Nc6 13. d5 $2 {The doubled pawns become weak.} Na5 $1 14. Nd2
Bc8 $1 15. Bxc8 Raxc8 16. f4 c6 17. fxe5 Qxe5 18. Nf3 Qe7 19. Nd4 cxd5 20. cxd5
Qc7 21. Rf2 $1 Nc4 (21... Qxc3 $6 22. Qxc3 Rxc3 23. Nb5 {favours White.}) 22.
Nc6 $1 Ne5 23. Nxe5 dxe5 24. Rf3 Qc4 25. Qxc4 Rxc4 26. Re1 Rfc8 27. Ree3 f6 28.
Kf1 b5 29. Ke1 Ra4 30. Rf2 Rcc4 31. Rfe2 Ra3 32. Rc2 b4 $1 {
White cannot protect everything.} 33. Kd2 bxc3+ 34. Rexc3 Raxc3 35. Rxc3 Rxe4
36. Ra3 Rd4+ 37. Ke3 Rxd5 38. Rxa7 {Black has an extra pawn in the rook ending.
} Rb5 39. a4 Rb2 40. h4 Rb3+ 41. Kf2 h5 42. a5 Ra3 43. a6 Kh7 44. Ra8 Kg6 45.
Ra7 Kf5 46. Rxg7 $1 Rxa6 47. Rh7 Ra2+ 48. Ke3 Ra3+ 49. Kf2 e4 50. Rg7 $5 ({
The pointe is} 50. Rxh5+ $2 Kg4 51. Rh6 Rf3+ 52. Ke2 Kxg3) 50... Rf3+ 51. Kg2
Rd3 52. Kf2 Ke5 53. Re7+ Kd4 54. Rd7+ Kc3 55. Ra7 Kd4 56. Rd7+ Ke5 57. Re7+ Kf5
58. Rg7 Rf3+ 59. Kg2 Rc3 60. Kf2 Ke5 61. Re7+ Kd4 62. Rd7+ Kc4 63. Rc7+ Kd3 64.
Rd7+ Kc2 {The black king has found a haven at a distance of the battlefield.}
65. Rh7 $2 {White misses the opportunity.} (65. Ke2 $1 Rxg3 66. Rd5 $1 Rf3 67.
Rxh5 Kc3 68. Ra5 Kd4 69. h5 {draws elegantly.}) 65... Kd2 66. Re7 e3+ 67. Kf3
Rd3 68. Re8 Rd5 69. Ra8 Rf5+ 70. Kg2 Rf2+ 71. Kg1 Rf1+ $1 {
Pachman is going to queen soon.} 0-1

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.03.24"]
[Round "2"]
[White "Ivkov, Borislav"]
[Black "Wexler, Bernardo"]
[Result "1-0"]
[ECO "E59"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3
Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bb5 a6 12. Bd3 e5 13. Qc2 Re8 14. e4 c4 15.
Bxc4 exd4 16. cxd4 Na5 17. Ne5 Be6 18. Bd3 {White has an advantage.} Qd8 $2 (
18... Qxc2 19. Bxc2 Rac8 20. Bd3 Nb3 21. Rb1 Nxd4 22. Rxb7 {
drew in Bronstein - Filip, Portoroz 1958.}) 19. Be3 Nb3 20. Rad1 Nxd4 21. Qc3
Nb3 $1 22. Nc4 Rc8 $5 23. e5 $1 Qc7 24. Qxb3 (24. exf6 $5 Bxc4 25. fxg7 Bxd3
26. Qxd3 {gains a pawn temporarily.}) 24... b5 $2 {
Wexler makes  a miscalculation.} (24... Ng4 $1 25. Bxh7+ Kh8 $1 26. Qb6 Bxc4 {
defends properly.}) 25. exf6 bxc4 26. Bxh7+ $1 Kxh7 27. Qc3 gxf6 $2 {
He opens the road to his king.} 28. Qxf6 Qe7 29. Qh6+ Kg8 30. Bd4 f6 31. Bxf6
Qh7 32. Qg5+ Kf7 33. Rb1 Rc7 34. Be5 Rd7 35. Qf6+ Kg8 36. Rb8 Rde7 37. Rfb1 Bd5
38. R1b6 a5 39. Qg5+ Kf8 40. Bd6 {Ivkov started well.} 1-0

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.03.25"]
[Round "3"]
[White "Fischer, Robert James"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "C75"]
[Annotator "JvR"]
[PlyCount "112"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

{Although Bobby was just sixteen, he had qualified in Portoroz 1958 and became
a grandmaster. He still looked boyish.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6
5. c3 Bd7 6. d4 Nge7 7. Bb3 h6 8. O-O Ng6 9. Nbd2 Be7 10. Nc4 Bg5 11. Ne3 Bxe3
12. Bxe3 O-O 13. h3 $5 (13. Nd2 {drew in Keres - Bondarevsky, Moscow 1950.})
13... Re8 14. Nh2 Qe7 15. dxe5 dxe5 {The chances are equal in the Ruy Lopez.}
16. Qh5 Na5 $1 17. Bc2 $6 ({Preferable is} 17. Bd5 c6 $1 18. Qxg6 $1 cxd5 19.
Qg3) 17... Nc4 $1 18. Bc1 $5 Nf4 19. Qf3 Rad8 $5 {
Pachman sacrifices a pawn for pressure in the centre.} 20. Bxf4 exf4 21. Qxf4
Bc6 22. Ng4 $6 (22. b4 $1 {preserves the extra pawn.}) 22... h5 23. Ne3 Nxb2
24. Nf5 Qf6 25. Qxc7 Qxc3 26. Rac1 Qf6 27. Rfe1 $6 ({Correct is} 27. f3 $1 Rd7
28. Qb6 {(Müller).}) 27... Nd3 28. Bxd3 Rxd3 29. Qf4 $2 {The troubles increase.
} g6 $1 30. Rc5 $5 Re6 31. Qb8+ Rd8 $5 32. Qf4 $6 gxf5 33. Rxf5 Qg7 $5 34. Rxh5
Rde8 35. f3 Re5 36. Rh4 Rg5 37. Rg4 Rxg4 38. hxg4 Qd4+ 39. Re3 $5 Qe5 $5 40.
Qf5 Qxf5 41. gxf5 Rd8 42. Kf2 Bb5 43. Ke1 Kg7 44. e5 Rd4 45. g4 Kh6 46. e6 f6
$5 47. Kf2 $5 Rd2+ 48. Kg3 Kg7 $6 (48... Rxa2 {wins at once.}) 49. Rc3 Bc6 50.
a3 Re2 51. Kf4 $6 (51. f4 $1 Rg2+ 52. Kh4 Rf2 53. Kg3 Rf1 {
prolongs the game (Müller).}) 51... a5 $1 52. Rd3 a4 53. Rd8 Rf2 54. Rd3 b5 55.
Rc3 Rxf3+ $1 56. Rxf3 Bxf3 {
Fischer had a poor start. He made many minor positional mistakes.} 0-1

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.03.29"]
[Round "6"]
[White "Najdorf, Miguel"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "D95"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. Qb3 e6 7. Bd2 b6 8. Rc1
Bb7 9. cxd5 Nxd5 $5 (9... exd5 10. Be2 c6 {
drew in Gligoric - Botvinnik, Moscow 1947.}) 10. Nxd5 Bxd5 11. Bc4 Bxc4 $5 12.
Qxc4 c5 $1 13. dxc5 Bxb2 14. Rc2 Ba3 15. cxb6 axb6 16. Bc3 Na6 $5 17. O-O Nc5
18. Ne5 f6 $1 19. Rd2 Qe8 20. Nf3 Ra4 21. Qe2 Ne4 22. Rc2 Nxc3 23. Rxc3 Bc5 24.
Rc2 e5 25. Nd2 Qe6 26. Nb3 Rfa8 27. h3 $5 Be7 28. Rd1 R4a7 29. Qb5 Bc5 $2 (
29... Rd8 30. Rxd8+ Bxd8 31. Rd2 Be7 32. Qe8+ Kg7 {draws.}) 30. Nxc5 bxc5 31.
Qxc5 Rxa2 32. Rxa2 Qxa2 33. Rd7 $1 Rf8 34. Rxh7 $1 Kxh7 35. Qxf8 {
White has won a pawn. Black can hold the queen ending.} Qe6 36. h4 e4 37. g3
Qf5 38. Qf7+ Kh6 39. Qf8+ Kh5 $5 40. Qd6 {White threatens Qf4.} g5 $1 41. Qd1+
Kh6 $2 ({Correct is} 41... Qg4 $1 42. Qxg4+ Kxg4 43. hxg5 Kxg5 44. Kg2 Kg4 45.
Kh2 f5 46. Kg2 Kg5 47. f3 exf3+ 48. Kxf3 Kg6 $1 {
and Black has reached a theoretical draw.}) 42. g4 $1 Qe5 43. h5 f5 44. Qd4 $1
{If Black exchanges the queens, White gets distant passed pawns in the pawn
ending.} 1-0

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.03.30"]
[Round "7"]
[White "Fischer, Robert James"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "C97"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Bd7 13. Nf1 Rfe8 14. Ne3 g6 15.
dxe5 dxe5 16. Nh2 Rad8 17. Qf3 Be6 18. Nhg4 Nxg4 19. hxg4 Qc6 {
They play the main line of the Ruy Lopez.} 20. g5 $5 {Bobby offers a pawn.} Nc4
$5 (20... Bxg5 $1 21. Nd5 Bxc1 22. Nf6+ Kh8 $1 23. Raxc1 Rf8 24. Qg3 Qc7 25.
Qg5 Kg7 26. Nh5+ {leads to perpetual check (Fischer).}) 21. Ng4 Bxg4 22. Qxg4
Nb6 23. g3 c4 24. Kg2 Nd7 25. Rh1 Nf8 26. b4 Qe6 27. Qe2 a5 28. bxa5 Qa6 29.
Be3 Qxa5 30. a4 Ra8 31. axb5 Qxb5 32. Rhb1 Qc6 33. Rb6 Qc7 34. Rba6 Rxa6 35.
Rxa6 Rc8 36. Qg4 Ne6 $6 37. Ba4 $6 (37. Rxe6 $1 fxe6 38. Qxe6+ Kf8 39. Bb6 Qb8
40. Ba4 {gains an advantage (Müller).}) 37... Rb8 38. Rc6 Qd8 $4 ({Correct is} 
38... Qd7 $1 39. Rb6 Qc7) 39. Rxe6 $1 Qc8 40. Bd7 $3 {
Fischer wins material by a lovely trick.} 1-0

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.04.02"]
[Round "9"]
[White "Fischer, Robert James"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "C97"]
[Annotator "JvR"]
[PlyCount "131"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Re8 13. Nf1 Bf8 14. Bg5 Nd7 15.
Ne3 Nb6 16. Rc1 $5 {Fischer plays a new move in the Ruy Lopez again.} f6 17.
Bh4 Be6 18. Nd5 Qb7 19. b4 Nac4 20. Nxb6 Qxb6 21. Bb3 cxd4 22. cxd4 a5 23. bxa5
Nxa5 24. Bxe6+ Rxe6 25. Qd3 Ree8 26. Rb1 b4 27. Re2 Reb8 28. Reb2 Qb5 29. Qxb5
Rxb5 30. d5 Rab8 31. Nd2 Kf7 32. f3 g6 33. Be1 Bh6 34. a4 Be3+ 35. Kf1 R5b7 36.
Nb3 Nc4 $2 ({Preferable is} 36... Nxb3 37. Rxb3 Bc5) 37. Ra2 Ra8 38. Ke2 Na3
39. Rbb2 Bg1 40. a5 Raa7 41. Ra1 Bc5 42. Rc1 Rc7 43. Bd2 Nb5 44. Rbc2 Na3 45.
Rb2 Nb5 46. Kd3 $1 {Fischer has an edge.} Na3 47. Nxc5 dxc5 48. Be3 c4+ 49. Ke2
b3 50. Bb6 $1 Rcb7 51. Ra1 $2 ({Better is} 51. Kd2 $1 Ra8 52. Kc3 $1) 51... Nc2
52. Rxc2 $1 {Bobby delivers an ingenious sacrifice.} bxc2 $2 (52... Rxb6 $1 53.
Rxc4 b2 54. Rb1 Rxa5 {draws (Müller).}) 53. Rc1 Ra8 54. Rxc2 Rc8 55. Kd2 Ke7 (
55... Rxb6 56. axb6 Rb8 {(Müller) is answered by} 57. Rb2 $1) 56. Kc3 Kd7 57.
Kb4 Rbb8 58. Rxc4 Rxc4+ 59. Kxc4 Rc8+ 60. Bc5 $1 Rb8 61. a6 Rb2 62. a7 Ra2 63.
Kb5 Kc7 64. d6+ Kb7 65. d7 Rd2 ({The pointe is} 65... Kc7 66. Bb6+ $1 Kxd7 67.
Ba5) 66. a8=Q+ $1 {
Fischer scored well during the  second part of the tournament.} 1-0

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.04.04"]
[Round "11"]
[White "Bolbochan, Jacobo"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A16"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. d3 d6 6. Bd2 h6 $5 7. Nf3 e5 8. O-O
Nh5 9. Ne1 f5 10. e3 Kh7 11. Nc2 a5 12. Rb1 c6 13. a3 Be6 14. Re1 {
The development has been going slowly.} d5 $5 15. cxd5 cxd5 16. b4 $1 axb4 17.
Rxb4 Rf7 18. Qb1 Qd7 19. Rb5 e4 $1 {Najdorf takes the initiative.} 20. d4 Nc6
21. Bf1 f4 $1 {He gives a pawn.} 22. gxf4 Nf6 $1 {
The attack on the king begins.} 23. Ne2 Bh3 24. Ng3 $2 (24. Rxb7 $1 Qxb7 25.
Bxh3 {counters timely.}) 24... Bxf1 25. Rxf1 h5 $1 26. Kh1 ({Not} 26. h4 $2 Qh3
27. Rc1 Ng4) 26... h4 $2 (26... Qh3 $1 27. Rg1 h4 {wins for Black.}) 27. Ne2
Qg4 28. Ng1 h3 $1 29. Ne1 Rxa3 30. f3 $1 exf3 31. Ngxf3 Ne4 32. Rxd5 Nxd2 33.
Rg1 $4 {Jacobo blunders terribly.} (33. Nxd2 Rxe3 34. Rg5 Qe2 35. Nef3 $1 {
defends properly.}) 33... Qxg1+ $1 34. Kxg1 Nxb1 35. Ng5+ Kg8 36. Nxf7 Kxf7 {
Najdorf occupied the second place.} 0-1

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.04.05"]
[Round "12"]
[White "Letelier Martner, Rene"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "E60"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 O-O 5. Be3 d6 6. Qd2 e5 7. Ne2 $5 Nbd7 8.
Na3 a6 9. g4 $6 (9. O-O-O $1 {moves the king from the centre.}) 9... exd4 10.
Nxd4 Ne5 11. Be2 $2 ({Correct is} 11. Bg2) 11... Bxg4 $1 12. fxg4 $2 (12. O-O-O
$1 c5 13. fxg4 cxd4 14. Bxd4 Nfxg4 15. Bxe5 Nxe5 16. h4 {uses opportunism.})
12... Nxe4 13. Qc2 Qh4+ 14. Kd1 Nxg4 15. Bxg4 Qxg4+ 16. Qe2 Qxe2+ 17. Kxe2 c5
18. Ndc2 Bxb2 {Black has gained four pawns for a piece.} 19. Rab1 $5 Nc3+ 20.
Kf3 Nxb1 21. Rxb1 Be5 22. h3 Kg7 23. Rb6 $5 f5 24. Nb1 Rf7 25. a4 Rb8 26. Rb3
Kf6 27. h4 f4 28. Bg1 Kf5 29. Nd2 h6 30. Ne4 g5 31. Nf2 Rg7 32. Ng4 h5 33. Nh6+
Kg6 34. hxg5 Kxg5 35. Ne3 fxe3 36. Bxe3+ Kf6 37. Ke4 Rh8 38. Kd5 Rg3 {
Letelier offered little resistance.} 0-1

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.04.05"]
[Round "12"]
[White "Najdorf, Miguel"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "A90"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

{Ivkov led half-a-point before Najdorf, when the round began.} 1. d4 e6 2. c4
f5 3. g3 Nf6 4. Bg2 Bb4+ 5. Nd2 O-O 6. Ngf3 d6 7. O-O Bxd2 8. Qxd2 a5 $5 9. b3
Qe8 10. Ba3 Qh5 $6 {Development of the queenside would be wiser.} 11. Ng5 $1 h6
12. Nh3 Qe8 $5 13. Nf4 Qf7 14. f3 Nc6 15. d5 Nd8 16. dxe6 Nxe6 17. e4 Nxf4 18.
Qxf4 fxe4 19. fxe4 Qh5 20. c5 $1 Bh3 $5 {Ivkov tries to liberate his position.}
21. Bf3 $2 (21. Bxh3 Qxh3 22. cxd6 Ng4 23. Qd2 cxd6 24. Bxd6 {grabs a pawn.})
21... Qe5 $2 (21... Ng4 $1 22. Bxg4 Bxg4 23. Qe3 Bh3 $1 {
attacks on the kingside.}) 22. Qxe5 dxe5 23. Rfd1 $6 (23. c6 $1 Rfb8 24. cxb7
Rxb7 25. Rfe1 a4 26. Bd1 {keeps an edge.}) 23... Rfd8 $5 24. Bb2 $1 Rxd1+ $5
25. Rxd1 Rf8 26. Be2 Ng4 27. Re1 Re8 28. Rd1 Rf8 29. Rc1 c6 30. Bc3 h5 $1 31.
Be1 Nf6 32. Rc4 Ra8 33. Ra4 Bg4 34. Kf2 Kf7 $6 {
Black should exchange (Najdorf).} 35. Bf1 Ke7 $6 {A pin becomes possible.} ({
Better is} 35... Nd7 36. Rxa5 Rxa5 37. Bxa5 Nxc5) 36. Ke3 Nd7 37. Bxa5 Rf8 $5
38. Bg2 Nxc5 39. Bb4 $5 Kd6 40. Ra7 b6 $2 {
Ivkov blunders a pawn before the time control.} (40... Rf7 $1 41. Ra8 b6 {
offers a stubborn resistance.}) 41. Rb7 $5 Bd7 42. Rxb6 {
The top became: Najdorf 81/2/11. Ivkov and Pachman 8, Fischer 71/2.} 1-0

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.04.08"]
[Round "14"]
[White "Pilnik, Herman"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "B93"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. Bd3
Be7 9. O-O O-O 10. Kh1 b5 11. Qe1 Bb7 12. a3 Re8 13. fxe5 dxe5 14. Bd2 $5 (14.
Bg5 h6 15. Be3 {drew in Clarke - Pilnik, Amsterdam 1954.}) 14... Nc5 $1 15. Rd1
$6 {There is something wrong with the sacrifice.} Nxd3 16. cxd3 Qxd3 17. Bh6 $2
({Preferable is} 17. Bf4 Qc4 18. Bxe5) 17... Qc4 $1 18. Bxg7 $2 (18. Nxe5 Qe6
19. Qg3 Bf8 20. Bf4 b4 21. axb4 Bxb4 {
leads to a positional advantage for Black.}) 18... Kxg7 19. Nxe5 Qe6 20. Qg3+ {
Ivkov finds a courageous defence.} Kh8 $1 ({Not} 20... Kf8 $2 21. Rxf6 $1 Bxf6
22. Nd7+ Ke7 23. Qc7 Rec8 24. Qxb7 {and White has a strong attack.}) 21. Qf4
Rad8 22. Nd5 Bxd5 23. exd5 Rxd5 24. Rde1 Bd8 $1 25. Ng6+ hxg6 26. Rxe6 Rxe6 {
Black gained a rook, bishop and knight for a queen.} 27. g4 g5 28. Qg3 Kg7 29.
Qc3 Re2 30. Re1 Rf2 31. h3 Rdd2 32. Qe3 Nd5 33. Qe5+ Bf6 34. Qg3 Bd4 35. Rg1
Nf4 36. Rc1 Rd3 37. Qxd3 Nxd3 38. Rd1 Rf3 39. Kg2 Re3 {
Najdorf and Pachman led before Ivkov and Fischer.} 0-1

[Event "Mar del Plata"]
[Site "22"]
[Date "1959.04.09"]
[Round "15"]
[White "Letelier Martner, Rene"]
[Black "Redolfi, Argentino"]
[Result "1-0"]
[ECO "E59"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "1959.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3
Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bb5 Bd7 12. a4 a6 13. Be2 Rfd8 $5 (13...
Rfe8 $5 {was played during the same round in De Souza Mendes - Shocron.}) 14.
Ba3 $1 b6 $5 {Black sacrifices a pawn.} 15. dxc5 bxc5 16. Bxc5 Ne4 17. Bd4 e5
18. Qb1 $1 exd4 $5 19. Qxe4 dxc3 (19... Re8 $5 20. Qd3 $1 dxe3 21. Ng5 {
brings a white attack.}) 20. Rfc1 Qa5 21. Qc4 Ne5 22. Qxc3 Nxf3+ 23. Bxf3 Qxc3
24. Rxc3 {White has an extra pawn.} Rac8 25. Rxc8 Rxc8 26. Bb7 Rb8 $2 (26...
Rc4 $1 27. Bxa6 Rxa4 28. Rxa4 Bxa4 {
leads to a bishop ending with survival chances.}) 27. Bxa6 Ra8 28. Bf1 Rxa4 29.
Rd1 $1 Be8 ({The pointe is} 29... Ra7 $2 30. Bb5 $1) 30. Rd8 Re4 31. Bb5 $1 Kf8
32. Kf1 Re5 33. Bxe8 Rxe8 34. Rxe8+ Kxe8 35. Ke2 {
White wins the pawn ending easily.} Ke7 36. Kd3 Ke6 37. Ke4 f5+ 38. Kf4 Kf6 39.
h4 Ke6 40. f3 Kf6 41. g4 fxg4 42. Kxg4 Ke6 43. Kg5 Ke5 44. h5 Ke6 45. h6 g6 46.
f4 Kf7 47. f5 gxf5 48. Kxf5 Ke7 49. Ke5 $1 {The final standings were: Najdorf
and Pachman 101/2/14, Fischer and Ivkov 10, Letelier Martner 9, Rossetto 8,
Wexler 71/2, Sanchez and Sanguineti 7, Emma 51/2, Jacobo Bolbochan and Pilnik
41/2, Shocron and Souza Mendez 4, Rodolfi 3.} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.03.30"]
[Round "2"]
[White "Spassky, Boris"]
[Black "Fischer, Robert James"]
[Result "1-0"]
[ECO "C39"]
[Annotator "JvR"]
[PlyCount "57"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

{The twenty-third tournament in Mar del Plata was played from 29 iii until 15
iv 1960. $10,000 came from the lotteries and casinos. Special guests were
Spassky, Fischer, Bronstein and Olafsson. Bobby looked more mature because he
wore tailored suits.} 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Nf6 6. d4 (
{Preferable is} 6. Bc4 $1 d5 7. exd5 Bd6 {
(Von Heydebrand under der Lasa - Staunton, Brussels 1853).}) 6... d6 7. Nd3
Nxe4 8. Bxf4 Bg7 $5 ({Known is} 8... Qe7) 9. Nc3 Nxc3 10. bxc3 c5 11. Be2 cxd4
12. O-O $5 {Spassky plays in a true Gambit style.} Nc6 {
Black could have captured on h4.} 13. Bxg4 O-O 14. Bxc8 Rxc8 15. Qg4 f5 16. Qg3
dxc3 17. Rae1 {
White has an attacking position in the central area for two pawns.} Kh8 18. Kh1
$6 {He could have taken pawn d6.} Rg8 19. Bxd6 Bf8 20. Be5+ Nxe5 21. Qxe5+ Rg7
$1 {Pawn h4 falls.} 22. Rxf5 Qxh4+ 23. Kg1 Qg4 $6 (23... Qg3 24. Qxg3 Rxg3 {
leads to a better endgame for Black (Spassky).}) 24. Rf2 Be7 25. Re4 Qg5 $6 (
25... Qd7 $1 26. Rf7 $6 Bc5+ $1 27. Nxc5 Qxf7 28. Ne6 Re8 29. Ng5 Rxe5 30.
Nxf7+ Rxf7 31. Rxe5 Rc7 {keeps the extra pawn in a rook ending.}) 26. Qd4 Rf8
$2 {Bobby blunders a piece.} ({Better is} 26... b6 $1 {(Fischer).}) 27. Re5 $1
Rd8 28. Qe4 Qh4 29. Rf4 {White wins a bishop.   Spassky would defeat Fischer
in this way three times: Bobby achieved an advantage first, but Boris
outwitted him later.} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.05"]
[Round "7"]
[White "Fischer, Robert James"]
[Black "Olafsson, Fridrik"]
[Result "1-0"]
[ECO "B52"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. Qe2 g6 7. c3 Bg7 8.
Rd1 e5 9. Na3 Nge7 10. d4 cxd4 11. cxd4 exd4 $5 (11... Nxd4 12. Nxd4 exd4 {
occurred in Canal - Trifunovic, Zürich 1954.}) 12. Nb5 O-O 13. Nfxd4 d5 14. Nb3
$1 a6 15. Nc3 d4 16. Na4 Rae8 17. Bf4 Nd5 $1 18. Bg3 Qe7 19. Nac5 Kh8 $5 20.
Re1 Nb6 21. Rac1 f5 22. Qd2 Qf7 23. exf5 gxf5 24. Nd3 $1 {
The knight stops the passed pawn.} Nd5 $5 25. Bd6 Rg8 26. Na5 Nxa5 27. Rxe8
Rxe8 28. Qxa5 h6 29. g3 Kh7 30. Nf4 $5 Nxf4 31. Bxf4 Qe6 $5 (31... Re2 $1 32.
Rc7 Qe6 33. Qb4 Re1+ 34. Kg2 Qe2 {draws (Müller).}) 32. Bd2 Rc8 $5 33. Re1 $1
Qf7 $2 ({Better is} 33... Qf6 $1 34. Re7 b5) 34. Re7 $1 Qg6 $2 (34... b6 $1 35.
Qxa6 Qxe7 36. Qxc8 Qe4 {offers more resistance.}) 35. Rxb7 f4 36. Qd5 Re8 37.
Bxf4 Re1+ 38. Kg2 Qd3 39. Kh3 Qg6 40. Rd7 h5 41. Kg2 h4 42. Rd6 {
Fischer scored a lot after his loss against Spassky.} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.07"]
[Round "8"]
[White "Bazan, Osvaldo"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "D38"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 c5 8. e3
Nc6 9. Be2 g5 $5 10. Bg3 Ne4 11. Rc1 Qa5 {Black attacks.} 12. O-O Bxc3 13. bxc3
Nxc3 14. Qe1 Nxe2+ 15. Qxe2 c4 {He has won a pawn temporarily.} 16. e4 Be6 17.
Bc7 $2 ({Better is} 17. Ne5 $1 dxe4 18. Qxe4 O-O 19. Nxc6 bxc6 20. Qxc6 {
and White has regained the pawn.}) 17... Qxc7 18. exd5 g4 $1 19. Nd2 $5 Nxd4
20. Qe4 Qf4 $1 {Fischer counters brilliantly.} 21. Rxc4 Qxe4 22. Nxe4 Ne2+ 23.
Kh1 Bd7 $2 (23... f5 $1 24. dxe6 fxe4 25. Rxe4 Nc3 {conquers a knight (Müller).
}) 24. Re1 Kf8 25. Nf6 $2 ({Correct is} 25. Nd6 $1 Ke7 26. Nxb7 Bb5 27. Rb4 a6
28. a4 Rhb8 29. axb5 Rxb7 30. Rxe2+ Kd6 {and equality.}) 25... Bb5 $1 26. Rb4
Ba6 27. Nd7+ Ke7 28. Nc5 Rhe8 29. Nxa6 Kd6 30. Rxb7 Ng3+ $1 31. hxg3 Rxe1+ 32.
Kh2 Rc8 33. Rxf7 Rcc1 {Bazan missed a tactical opportunity.} 0-1

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.07"]
[Round "8"]
[White "Spassky, Boris"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "B99"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. a3 Bb7 14. Rg1 g6 $6 (
{Known is} 14... O-O-O $6) ({Preferable is} 14... Rc8 $5 15. Bh3 g6) 15. Bh3 $1
{The target becomes square e6.} O-O-O $2 (15... Nc5 $1 16. b4 $6 Nd7 17. Nxe6
$6 fxe6 18. Bxe6 O-O-O {favours Black.}) 16. Bxe6 $1 fxe6 17. Nxe6 Qb6 $6 (
17... Qc4 $1 18. Nxd8 Kxd8 $1 {defends properly.}) 18. Nxd8 Rxd8 $2 19. Qh3 $1
{Eliskases has been outplayed.} b4 $5 ({The pointe is} 19... Rh8 $2 20. Nxb5 $1
axb5 21. Qc3+) 20. axb4 d5 $5 21. Nxd5 Bxd5 22. exd5 Bxb4 23. Rg3 Re8 24. d6
Qc6 25. Qxh7 Qe4 26. Kb1 Rf8 27. Rgd3 Rxf4 28. Rd4 Qe5 29. Rxf4 Qxf4 30. Qxg6
Qe5 31. Qg8+ Kb7 32. Qd8 Qb5 33. Qc7+ Ka8 34. g6 Ba3 35. Qc3 Bc5 36. g7 {
Spassky led by 81/2/9, half-a-point before Fischer.} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.09"]
[Round "10"]
[White "Bielicki, Carlos"]
[Black "Gadia, Olicio"]
[Result "1-0"]
[ECO "D81"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

{The Argentine Bielicki had become world champion of the youth.} 1. d4 Nf6 2.
c4 g6 3. Nc3 d5 4. Qb3 dxc4 5. Qxc4 Be6 6. Qd3 Bg7 7. e4 O-O 8. Nf3 {
White has a positional plus.} Bg4 $5 (8... c5 {
occurred in Guimard - Maderna, La Plata 1941.}) 9. Ne5 Nc6 $5 10. Nxg4 $5 {
Exchange of knights leads to a doubled pawn.} Nxg4 11. Be2 $6 ({Better is} 11.
f3) 11... Qxd4 $1 12. Qxd4 Nxd4 13. Bxg4 $5 Nc2+ 14. Kd1 Nxa1 15. Be3 {
If White collects the knight, he has the advantage again.} Rfd8+ $6 (15... f5
$1 16. exf5 gxf5 17. Bf3 f4 18. Bd2 Rad8 {hinders the opponent.}) 16. Kc1 Rd3
$5 17. Kb1 Rxc3 $2 ({Preferable is} 17... Bxc3 $1 18. bxc3 Rxc3 19. Kxa1 Rd8)
18. bxc3 Bxc3 19. Bc1 $6 (19. Rc1 Bg7 20. Rxc7 {
develops the rook before the knight is conquered.}) 19... Rd8 $1 20. Rd1 Rd4
21. Rxd4 Bxd4 22. f4 e5 23. fxe5 Bxe5 24. h3 Kg7 25. Bc8 $5 b6 26. Bb7 Kf6 27.
Bd5 Ke7 28. Ba3+ c5 29. Bb2 $1 Bxb2 30. Kxb2 f6 31. Kxa1 Kd6 32. Kb2 b5 33. Bg8
h6 34. Bf7 g5 35. Kc3 Ke5 36. Be8 a6 37. Bc6 Kd6 38. Bb7 a5 39. Ba6 Kc6 40. Kd3
Kb6 41. Bc8 Kc7 42. Be6 Kd6 43. Bf7 Kc7 $6 44. Be8 $1 Kb6 45. a4 $1 b4 46. Kc4
Kc7 47. Kxc5 b3 48. Bf7 b2 49. Ba2 Kd7 50. Kd5 Ke7 51. g4 {Bielicki scored 50%.
} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.09"]
[Round "10"]
[White "Bronstein, David"]
[Black "Marini, Luis"]
[Result "1-0"]
[ECO "B31"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. d3 O-O 7. Na3 $5 (7. Bg5
{drew in Bronstein - Furman, Tbilisi 1959.}) 7... Qc7 8. Nc2 d5 9. Bxc6 $5 bxc6
10. e5 Ng4 11. d4 cxd4 12. cxd4 f6 13. Bf4 $5 {
Bronstein delivers a temporary pawn sacrifice.} fxe5 $1 14. Bg3 $1 Qb6 15. dxe5
Nh6 $6 (15... Qxb2 $1 16. Ncd4 c5 17. Rb1 Qxa2 18. Ra1 {
leads to a repetition of moves.}) 16. Ne3 $5 Ba6 17. Re1 e6 18. b4 $1 Qxb4 19.
Nd4 Qe7 20. Nxc6 {White has regained the pawn.} Qd7 21. Nd4 Nf5 22. Nexf5 gxf5
23. Bf4 {Two black pawns are blockaded.} Rac8 24. Qh5 $1 {
He takes the initiative.} Qf7 25. Qh4 Rc3 26. Bh6 Rc4 $6 (26... Re8 {
overprotects a pawn.}) 27. Rad1 Bc8 28. Bxg7 Qxg7 29. f4 {
White has gained a positional advantage.} a6 $6 (29... Kh8 $1 30. Rd3 Qg4 {
defends actively.}) 30. Re3 $1 Qa7 31. Red3 Kh8 32. h3 Qf7 33. Rg3 Bd7 34. Kh2
Ra4 35. a3 Rc4 36. Qh6 Rcc8 $5 37. Rb1 $1 Rb8 38. Rxb8 $5 Rxb8 39. Nf3 $1 (39.
Rc3 $5 Rb7 40. g4 $1 fxg4 41. hxg4 {attacks on all fronts.}) 39... Qf8 $6 (
39... Rg8 $1 40. Ng5 Qg7 41. h4 $1 a5 42. h5 $1 a4 43. Kg1 $1 Bc8 {
defends a difficult position.}) 40. Ng5 $1 {Bronstein played a subtle game.} ({
The pointe is} 40. Ng5 Qxh6 $2 41. Nf7#) 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.09"]
[Round "10"]
[White "Olafsson, Fridrik"]
[Black "Eliskases, Erich"]
[Result "1-0"]
[ECO "B10"]
[Annotator "JvR"]
[PlyCount "69"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. d3 d5 3. Nd2 Nd7 $5 4. Ngf3 Qc7 5. g3 dxe4 6. dxe4 e5 7. Bg2 Bc5 8.
O-O {Olafsson plays the King's Indian Reversed.} Ne7 9. b3 Ng6 10. Bb2 O-O 11.
a3 a5 12. Ne1 b6 13. Nd3 Ba6 14. Nf3 Bd6 15. h4 Rfe8 16. h5 $1 {
The first offensive move is made at last.} Ngf8 17. Nh4 Nc5 18. Nf5 Nxd3 19.
cxd3 Ne6 20. Qg4 f6 21. f4 $5 ({Obvious is} 21. Rfd1) 21... Rad8 $2 (21... Bxd3
$5 22. Nxd6 Qxd6 23. fxe5 fxe5 24. Rad1 Rad8 25. h6 g6 {
accepts the pawn sacrifice.}) (21... exf4 $5 22. gxf4 Bxf4 23. Bxf6 Bxd3 24.
Bxg7 Bh2+ 25. Kh1 Nxg7 26. Nh6+ Kh8 27. Nf7+ {leads to perpetual check.}) 22.
fxe5 Bxe5 23. Nh6+ Kf8 $6 (23... Kh8 $5 24. Bxe5 fxe5 25. Nf7+ Kg8 26. Nxd8
Qxd8 {costs an exchange.}) 24. Rxf6+ $1 Bxf6 25. Bxf6 gxf6 {
Eliskases allows a hunt of the king.} ({Or} 25... gxh6 26. Rf1 Bxd3 27. Bxd8+
$1) 26. Qg8+ Ke7 27. Qxh7+ Kd6 28. e5+ $1 Kxe5 (28... fxe5 29. Nf5+ Kc5 30.
Rc1+ {wins for White.}) 29. d4+ $1 Rxd4 (29... Kxd4 30. Rd1+ Kc3 31. Rc1+ {
brings mate soon.}) 30. Nf7+ Qxf7 31. Qxf7 Rdd8 32. Re1+ Kd6 33. Qxf6 Bc8 34.
Qe5+ Kd7 35. Bh3 {Olafsson attacked strongly.} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.10"]
[Round "11"]
[White "Fischer, Robert James"]
[Black "Incutto, Carlos"]
[Result "1-0"]
[ECO "C99"]
[Annotator "JvR"]
[PlyCount "103"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. Nf1 Rac8 15.
Bd3 Nd7 16. Ne3 exd4 17. Nxd4 Bf6 18. Ndf5 g6 19. Nh6+ Kh8 {
Many moves of the Closed Ruy Lopez are familiar.} 20. Neg4 $5 (20. Rb1 {
was played in Smyslov - Keres, Bled 1959.}) 20... Bg7 21. Bg5 $5 Ne5 $5 ({
The alternative is} 21... Bxb2 $1 22. Rb1 f6 23. Rxb2 fxg5 24. a4 $1) 22. Nxe5
dxe5 23. a4 $5 Nc4 24. Qe2 f6 25. Bc1 Na5 $6 ({Preferable is} 25... Rfd8 $1 26.
axb5 axb5) 26. axb5 axb5 27. Be3 Nb3 28. Ra7 Nd4 29. Qg4 Ra8 30. Rxa8 Bxa8 31.
Rc1 Qd6 32. Rc8 Qe7 33. Bxb5 $5 Bxe4 $6 (33... f5 $1 34. exf5 $1 Bxh6 35. f6
Qxf6 36. Bxh6 Qxf2+ 37. Kh2 Qxg2+ $1 38. Qxg2 Rxc8 {brings mutual chances.})
34. Bc4 f5 35. Qg5 $6 ({Correct is} 35. Rxf8+ Qxf8 36. Qg5) 35... Bf6 $2 (35...
Nf3+ $1 36. gxf3 Qxg5+ 37. Bxg5 Rxc8 38. Nf7+ Kg8 {
slightly favours Black (Müller).}) 36. Nf7+ $1 Kg8 $2 (36... Qxf7 $1 37. Bxf7
Bxg5 38. Rxf8+ Kg7 39. Rc8 {(Müller)} Bxe3 $5 40. fxe3 Kxf7 41. exd4 exd4 {
offers more resistance.}) 37. Nxe5+ Ne6 38. Nxg6 $1 Bxg5 39. Nxe7+ Bxe7 40. Bh6
Rxc8 41. Bxe6+ Kh8 42. Bxc8 Bf6 43. b4 Bd4 44. b5 Bd3 45. Bd7 Kg8 46. Be8 Bc4
47. g3 Bd3 48. Be3 Bxe3 49. fxe3 Kf8 50. b6 Be4 51. Bd7 Ke7 52. Bxf5 $1 {
Fischer won again in the Ruy Lopez.} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.12"]
[Round "12"]
[White "Spassky, Boris"]
[Black "Olafsson, Fridrik"]
[Result "1-0"]
[ECO "B82"]
[Annotator "JvR"]
[PlyCount "119"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3 a6 7. Bd3 b5 8. f4
$5 {Boris wants to attack on the kingside.} Nbd7 9. a3 Bb7 10. O-O Be7 11. Qf3
Rc8 12. Rae1 O-O 13. g4 $5 g6 $5 ({Two alternatives are} 13... Nc5 $1 14. g5
Nfd7 {(Botterill - Benko, Hastings 1974)}) ({and} 13... Rxc3 $5 14. bxc3 Nc5 {
(Donchev - Lutov, Sofia 1982).}) 14. Nde2 d5 $6 ({Preferable is} 14... Nc5 $1)
15. e5 $1 Ne4 $5 16. Nxe4 dxe4 17. Bxe4 Bxe4 18. Qxe4 Rc4 19. Qf3 $5 (19. Qd3
$1 Nc5 20. Qxd8 Rxd8 21. Nc3 {gains an advantage.}) 19... Rxc2 20. Nd4 $5 Rc4
$6 {Olafsson accepts passivity.} (20... Rxb2 21. Nc6 Qe8 {
defends with an extra pawn.}) 21. Nc6 Qe8 22. f5 $6 Bh4 $2 (22... exf5 $1 23.
gxf5 Bc5 $1 {counters in the right way.}) 23. Rc1 $1 Rxc1 24. Bxc1 exf5 (24...
f6 25. Bh6 Rf7 26. fxe6 Qxe6 27. Nd8 {also costs material.}) 25. Bh6 $1 fxg4
26. Qxg4 Be7 27. b4 Bd8 28. Nxd8 Qxd8 29. Qd4 $5 Qe7 30. e6 $5 fxe6 31. Bxf8
Nxf8 {White has gained an exchange.} 32. Qf6 Qe8 33. Rd1 Nd7 34. Qd4 Nf8 35.
Qd8 Qf7 36. Rf1 Qg7 37. Qf6 g5 38. Qxg7+ Kxg7 39. Rd1 Kf6 40. Rd6 Ke5 41. Rxa6
Kd5 42. Ra7 e5 43. Rc7 Ne6 44. Rxh7 Ke4 45. Kf2 Nd4 46. a4 bxa4 47. Ra7 Kf4 48.
Rxa4 e4 49. Ra8 e3+ 50. Kf1 Kf3 51. Rf8+ Ke4 52. Rd8 e2+ 53. Kf2 e1=Q+ 54. Kxe1
Nc2+ 55. Kf2 Nxb4 56. Rf8 Nd5 57. Kg3 Ke5 58. Ra8 Nc7 59. Ra7 Ne6 60. Rf7 {
Spassky had scored the incredible 111/2/12, one point ahead of Fischer. Boris
played with less concentration in the three remaining rounds.} 1-0

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.14"]
[Round "14"]
[White "Letelier Martner, Rene"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "A45"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Bg5 c5 3. c3 $5 {Letelier leaves the theory quickly.} Qb6 4. Qb3
$5 {He wants to exchange.} cxd4 5. Qxb6 axb6 6. Bxf6 gxf6 7. cxd4 Nc6 $1 8. Nf3
Nb4 9. Kd2 Rxa2 10. Rxa2 Nxa2 11. Na3 $6 (11. Nc3 $1 Nxc3 12. bxc3 d5 13. e3 {
keeps the equality.}) 11... d5 12. e3 e6 13. Nc2 Nb4 14. Nxb4 Bxb4+ 15. Kc2 Bd7
16. Kb3 Bd6 17. Bd3 Ke7 18. Ra1 Rc8 19. Ra7 Bc6 20. g3 h6 21. Ra1 Kd7 22. Ra7
Kc7 23. Ra1 b5 24. Rc1 Kb6 25. Ra1 Bd7 {Black has small advantages.} 26. Nh4
Rc6 27. Ra8 Rc1 $6 (27... Bc8 $1 {
blocks the entry of the white rook to the black position.}) 28. Rh8 $2 ({
Better is} 28. Rd8 $1 Kc7 29. Rh8 {(Müller)} b4 30. Rh7 $1 Rd1 31. Rxf7 $1 {
drawn.}) 28... b4 $1 29. Rxh6 $4 {Letelier blunders terribly.} ({Correct is} 
29. Nf3 $1 Ra1 $1 30. Kc2 Ba4+ 31. b3 Ra2+ 32. Kc1 $1 Rxf2 33. bxa4 Rxf3 34.
Rxh6 {but Black has winning chances.}) 29... Ka5 $1 {
Fischer threatens mate in two.} 30. Ka2 b3+ $1 31. Kxb3 Ba4+ 32. Ka2 Kb4 33. b3
Bxb3+ 34. Kb2 Rd1 35. Bb1 Rd2+ 36. Ka1 Kc3 {The mate attack continues.  
Fischer trailed Spassky by half-a-point at the end of the penultimate round.}
0-1

[Event "Mar del Plata"]
[Site "23"]
[Date "1960.04.15"]
[Round "15"]
[White "Eliskases, Erich"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "C50"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1960.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Nc3 d6 6. Bg5 Na5 7. Nd5 Nxc4 8.
dxc4 c6 9. Nxf6+ gxf6 10. Bh4 Rg8 11. O-O Be6 $5 {Black has the initiative.} (
11... Bh3 {occurred in Tordion - Kostic, Ljubljana 1949.}) 12. Qd3 Qe7 13. Rad1
O-O-O 14. Rfe1 Bg4 15. Qb3 $2 {The queen should remain in the central area.}
Qe6 $1 16. Rd3 $5 Rde8 {Black pieces are ready for an attack on the kingside.}
17. Nd2 $6 ({Better is} 17. Bg3 $1 f5 18. exf5 Bxf5 19. Nd4 Qg6 20. Nxf5 Qxf5
21. Rdd1 {and White offers more resistance.}) 17... f5 $1 18. Kf1 Qh6 $1 19. g3
$5 ({Not} 19. Bg3 $4 f4) 19... f4 20. f3 fxg3 21. hxg3 Bh3+ 22. Ke2 f5 $1 23.
exf5 Bxf5 24. Ne4 Bxe4 25. fxe4 Rg4 26. Kd1 Qg6 27. Rf3 Rxe4 28. Rxe4 Qxe4 29.
Qd3 Qg6 30. Qf5+ Qxf5 31. Rxf5 Rg8 32. Rf7 h6 33. Rf6 Rg4 34. c3 $5 ({Or} 34.
b3 Rd4+ 35. Ke2 Bb4 $1) 34... Rxc4 35. Rxh6 b5 36. Rg6 b4 37. cxb4 Rxb4 38. Kc2
Re4 39. g4 Re2+ 40. Kb3 Kd7 41. Bg5 Bd4 42. Bc1 e4 43. Bf4 d5 $1 44. Rd6+ Ke7
45. Rxc6 Rxb2+ 46. Ka3 Rf2 47. Rc7+ Kd8 48. Rf7 Bc5+ 49. Kb3 Rf3+ 50. Kc2 Be3
51. Bc7+ Kc8 52. Re7 Bg5 53. Rh7 d4 54. Ba5 d3+ 55. Kb2 e3 56. Rc7+ Kb8 57. Rc5
Rf2+ 58. Kb3 d2 {Bronstein scored many wins during the second part of the
tournament.   The final standings became: Spassky and Fischer 131/2/15,
Bronstein 111/2, Olafsson 101/2, Bazan 9, Wexler 81/2, Letelier Martner 8,
Foguelman, Incutto and Redolfi 61/2, Bielicki and Eliskases 6, Alvarez del
Monte, Gadia and Marini 4, Saadi 2. Fischer had won an international
tournament for the first time.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.06.23"]
[Round "1"]
[White "Pachman, Ludek"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "E89"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

{Players from three continents participated in 'Torneo Magistral
Sesquicentenario de la Revolution de la Majo' in Buenos Aires from 23 vi until
21 vii 1960. It celebrated the first Argentine junta in 1810, six years before
the independence from Spain. Tournament hall was the Aula Magna de la Facultad
de Medicine.   Six Argentine partakers plus fourteen men from the USA and
Europe battled. The strongest tournaments in those days had two
representatives of the Soviet Union plus champions from other countries. This
happened before the selection on ELO-rating.} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4.
e4 d6 5. f3 O-O 6. Be3 e5 7. d5 c6 8. Nge2 cxd5 9. cxd5 a6 10. Qd2 Nbd7 11. g4
h5 12. Bg5 hxg4 13. fxg4 Nc5 14. Ng3 Bxg4 15. h3 $6 (15. b4 $1 Ncd7 16. h3 {
drew in Botvinnik - Tal, Moscow 1960 (10).}) 15... Bd7 $1 16. h4 Qa5 $1 17. Rb1
$1 Qb4 $1 18. h5 Qd4 $6 ({Black could play} 18... Nxh5) 19. Qg2 $6 (19. h6
Qxd2+ 20. Kxd2 Bh8 21. b4 {takes the initiative.}) 19... Ng4 $1 20. Rd1 Qb4 21.
a3 Qb6 22. Nf5 $5 {Pachman makes an opportunistic decision.} gxf5 23. h6 Nxe4
24. Nxe4 fxe4 25. hxg7 $5 Kxg7 26. Bh6+ Kg6 $2 (26... Kf6 $1 27. Be2 Rg8 {
wins for Black.}) 27. Be2 $1 {Suddenly, Ludek has a strong attack.} f5 28. Bxg4
fxg4 29. Qh2 $1 Rf5 30. Qh4 $2 {Gligoric gets a new chance.} (30. Bf4 $3 Kf7
31. Qh7+ Ke8 32. Qg6+ {wins for White (Caputto).}) 30... Rg8 $1 {
The tables turn.} 31. Bg5 Rh8 32. Bh6 Kf7 33. Rf1 Qe3+ $1 {
Black has won three pawns.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.06.24"]
[Round "2"]
[White "Guimard, Carlos"]
[Black "Taimanov, Mark"]
[Result "1-0"]
[ECO "A48"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 c5 5. e3 O-O 6. c3 b6 7. Be2 Ba6 8. O-O
Qc8 $5 (8... h6 9. Bxf6 Bxf6 {happened in Gereben - Benko, Budapest 1951.}) 9.
h3 h6 10. Bh4 Bxe2 11. Qxe2 Qa6 12. Rfe1 Qxe2 13. Rxe2 Nc6 $2 ({Better is} 
13... d6 {(Janosevic).}) 14. Bxf6 $1 Bxf6 15. dxc5 bxc5 16. Ne4 $1 c4 17. Nxf6+
exf6 {The black pawn structure has been ruined.} 18. Rd1 Rfd8 19. Rd6 $1 Rab8 (
{Or} 19... Kg7 20. Nd2 Na5 21. Rd5) 20. Rxf6 Rb7 21. Rd2 Rdb8 22. Rf4 $1 Rxb2
23. Rxd7 $1 {Guimard has a winning attack.} Rxa2 24. Rfxf7 Rb1+ 25. Kh2 Rxf2
26. Rg7+ Kf8 27. Rh7 Kg8 28. Rdg7+ Kf8 29. Rc7 Kg8 30. Rhd7 {
A local hero defeated a Soviet grandmaster.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.06.25"]
[Round "3"]
[White "Taimanov, Mark"]
[Black "Bazan, Osvaldo"]
[Result "1-0"]
[ECO "D26"]
[Annotator "JvR"]
[PlyCount "55"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Qe2 a6 7. dxc5 Bxc5 8. e4
b5 $5 {They play a rare line of the Queen's Gambit Accepted.} ({Known is} 8...
Qc7) 9. Bd3 Nbd7 10. O-O Bb7 11. Nbd2 O-O 12. e5 $1 Ng4 $5 13. Ne4 Rc8 $6 ({
Preferable is} 13... Bb6 14. Bf4 Bc7 {and both sides battle for the centre.})
14. Bf4 $1 f6 $1 15. exf6 Ngxf6 16. a4 Qb6 17. Neg5 {White advances everywhere.
} Rce8 $5 18. axb5 axb5 19. Bg3 $5 h6 20. Ne4 Nxe4 21. Bxe4 Bxe4 22. Qxe4 Nf6
23. Qg6 Nd5 $5 24. Rfe1 Re7 25. Re4 Nb4 $2 (25... Qc6 26. Ne5 Qe8 {
defends properly.}) 26. Rh4 $1 Rf6 $2 {Bazan allows a devastating attack.} (
26... Ra7 $1 27. Rxa7 Qxa7 28. h3 Qf7 29. Rxh6 $1 Qxg6 30. Rxg6 {
only gains a pawn.}) 27. Ra8+ Rf8 28. Ng5 $1 {
White mates soon. Taimanov compensated his previous loss.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.06.26"]
[Round "4"]
[White "Rossetto, Hector"]
[Black "Evans, Larry"]
[Result "0-1"]
[ECO "D01"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 h6 4. Bh4 e6 5. e3 c5 6. Nf3 cxd4 $5 7. Qxd4 $5 a6
8. Be2 Nc6 9. Qd3 Be7 10. a3 O-O 11. O-O b5 12. Bg3 Bb7 13. Rfd1 Qc8 14. Nd4
Rd8 15. Bf3 $6 (15. Qd2 $1 {prevents ..Na5.}) 15... Na5 16. b3 Nc6 $1 17. Nce2
Ne4 $1 18. Nxc6 Qxc6 19. Be5 Rac8 20. Ra2 $5 Ng5 21. Nd4 Nxf3+ 22. Nxf3 f6 23.
Ba1 Qe8 $1 24. Bc3 $5 e5 $1 25. Qd2 $2 ({Better is} 25. Ne1 Qh5 26. Raa1) 25...
Qh5 $2 (25... d4 $1 {starts a winning attack.}) 26. Ba5 Re8 27. Qe2 Bd6 28. h3
f5 29. Bb4 Bb8 30. c3 $6 Qf7 31. Rad2 $2 (31. Ba5 {keeps the bishop.}) 31... e4
$5 32. Nd4 Qc7 33. g3 a5 34. Nxb5 Qb6 35. Nd4 axb4 36. cxb4 {
White has lost a piece for two pawns.} g6 37. b5 Be5 38. a4 Rc3 39. b4 Rc4 $2 (
39... Qd6 $1 {pressures on b4 and prepares a decisive charge on the kingside.})
40. a5 $1 Qc7 {The game is adjourned.} 41. b6 Qd7 42. Nb3 $2 (42. b5 $1 Bxd4
43. a6 $1 Qxb5 44. axb7 Qxb6 45. Rxd4 Rxd4 46. Rxd4 Qxb7 47. Qd2 {
blockades the extra pawn and brings survival chances.}) 42... Qb5 $1 43. Nc5
Bc6 {The pawns on the queenside fall. Larry Evans from the USA competed with
the best.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.06.28"]
[Round "5"]
[White "Eliskases, Erich"]
[Black "Fischer, Robert James"]
[Result "1-0"]
[ECO "E22"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

{Fischer would score minus two, his only negative score in an international
tournament. According to Donner, Evans paid a woman to distract Bobby. Fischer
blamed the poor lightning. Actually, for an unknown reason, he did not crush
the lesser players, like he did in other events.} 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5
4. d4 Bb4 5. Qb3 Nc6 6. Bg5 h6 7. Bxf6 Qxf6 8. e3 dxc4 9. Bxc4 O-O 10. O-O Qe7
11. Qc2 Bd6 12. Rad1 Kh8 $5 (12... a6 {
occurred in Szabo - Prins, Saltsjobaden 1952.}) 13. a3 e5 $1 14. Nd5 Qe8 15.
dxe5 Nxe5 16. Nxe5 Qxe5 17. f4 $1 Qe8 18. e4 c6 19. Nc3 Bc7 20. Qe2 Be6 21. e5
Qe7 22. Ne4 Rad8 23. Kh1 Rfe8 24. Bxe6 Qxe6 25. Nc5 {White has the initiative.}
Qc8 26. Qh5 Rxd1 27. Rxd1 Rd8 28. h3 Kg8 29. Rxd8+ Qxd8 30. e6 Qe7 31. Qf5 b6
32. exf7+ Qxf7 33. Qc8+ Kh7 34. Ne6 Bd6 35. g4 Qf6 36. Qd7 Qe7 37. Qxe7 Bxe7 {
The ending of knight and bishop is equal.} 38. Nd4 c5 39. Nc6 Bd6 40. Nxa7 c4
$6 (40... Bxf4 {draws easily.}) 41. Nc8 $1 {White wins a pawn.} Bc5 $2 ({
Correct is} 41... Bxa3 $1 42. Nxb6 Bxb2 43. Nxc4 Bc1 {drawn (Caputto).}) 42. a4
$1 Kg6 ({The pointe is} 42... Bd4 43. Nd6 $1) 43. Kg2 Kf6 44. Kf3 Ke6 45. Ke4
Bf2 46. f5+ Kd7 47. Na7 Kd6 48. Nb5+ Kc5 49. Nc7 $1 Bh4 50. Ne8 Kb4 51. Kd5 $1
Be7 52. Nxg7 Bf6 53. Ne8 Bxb2 54. f6 Bxf6 55. Nxf6 c3 56. Nh5 $1 Kxa4 ({Or} 
56... c2 57. Nf4 c1=N 58. h4) 57. Nf4 b5 58. Ne2 c2 {
Eliskases played a great endgame.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.06.30"]
[Round "6"]
[White "Rossetto, Hector"]
[Black "Kortschnoj, Viktor"]
[Result "1-0"]
[ECO "D04"]
[Annotator "JvR"]
[PlyCount "135"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Bd3 Bg7 5. O-O O-O 6. Nbd2 c5 7. c3 Nfd7 $5 ({
Usual is} 7... Nc6) 8. Qe2 Nc6 9. h3 Re8 10. Bb5 a6 $1 11. Ba4 b5 12. Bc2 Bb7
13. Rd1 e6 14. Nf1 Qc7 15. Bd2 Rac8 16. Rac1 $2 ({More active is} 16. a4 $1)
16... e5 $1 {Black has the initiative on the queenside and in the centre.} 17.
dxc5 Nxc5 18. b4 Ne4 19. Be1 Nd6 20. e4 $5 Nxe4 21. Bxe4 dxe4 22. Ng5 f5 $5 ({
More solid is} 22... Nd8 $1 23. Nxe4 Ne6) 23. a4 $1 Nd8 $1 ({The pointe is} 
23... h6 $2 24. Qa2+ Kh8 25. Nf7+) 24. axb5 axb5 25. Qxb5 Qc6 26. Qxc6 Bxc6 {
Black still has a positional advantage.} 27. h4 Bf6 28. c4 $1 {
He gives a pawn for a counteraction.} h6 29. Nh3 Bxh4 30. b5 Ba8 31. Rd6 Ne6 $6
({Preferable is} 31... Kf7 $1 32. Ne3 Nb7 $1 33. Rd7+ Re7) 32. Ne3 Kf7 33. Ra1
$1 Be7 34. Rd7 Kf6 $2 ({Correct is} 34... Nc5 35. Rda7 Nd3 {
and Black keeps an edge.}) 35. Bb4 $3 {Rossetto starts brilliant counter-play.}
Bxb4 $2 (35... Nc7 $1 36. Rxe7 Rxe7 37. b6 $1 Rd7 38. bxc7 Kf7 {
offers more resistance.}) 36. Rxa8 $1 {He threatens mate in one.} Nc5 37. Nd5+
Ke6 38. Re7+ $1 Rxe7 39. Rxc8 Nb7 40. Nxb4 {White has gained a piece.} Rd7 41.
Na6 Rd1+ 42. Kh2 Na5 43. b6 Rb1 44. c5 Kd5 45. Ng1 Rb2 46. Ne2 $1 Rxe2 47. Nb4+
$1 Kc4 48. c6 Rb2 49. c7 Kxb4 50. Ra8 Rc2 51. Rxa5 $1 {He forces promotion.}
Kxa5 52. b7 Rxc7 53. b8=Q Rc6 54. Qxe5+ Ka6 55. Kg3 h5 56. Kf4 Kb6 57. Qb8+ Kc5
58. Ke5 Kc4 59. Qe8 Rc5+ 60. Kf4 Kd3 61. Qxg6 Ke2 62. Qa6+ Ke1 63. Qa1+ Ke2 64.
Qb2+ Kf1 65. f3 Rc8 66. Ke3 Kg1 67. fxe4 fxe4 68. g4 {
The other Soviet grandmaster was defeated by an Argentinian too.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.01"]
[Round "7"]
[White "Uhlmann, Wolfgang"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "D97"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Na6 8.
Be2 c5 9. d5 e6 10. Bg5 $5 ({Theory is} 10. O-O) 10... h6 ({
The alternative will become} 10... exd5 $5 11. Nxd5 Be6) 11. Bxf6 Bxf6 12. e5
exd5 13. Nxd5 Bg7 14. O-O-O $1 Kh8 15. Nf4 Qa5 16. a3 Nc7 17. Nh4 $1 {
Uhlmann makes a provoking move.} Ne6 $2 {Szabo misses the threat.} ({Right is} 
17... Kh7 $1 18. Nhxg6 $1 fxg6 19. Nxg6 Be6 $1 20. Nxf8+ Rxf8 21. Bd3+ Kh8 22.
Qe4 Bf5 {and Black defends wonderfully.}) 18. Nhxg6+ fxg6 19. Nxg6+ Kh7 20.
Nxf8+ Nxf8 21. f4 Kh8 22. Qe4 c4 $5 23. Bxc4 Bg4 24. Rd6 Rc8 25. Kb1 $1 Qa4 26.
Rc1 b5 27. h3 $1 Bh5 28. g4 Bg6 29. f5 Rxc4 $6 (29... bxc4 30. fxg6 Rb8 {
offers more resistance.}) 30. Rxc4 bxc4 31. fxg6 Qb3 32. Rd8 c3 33. Qb4 c2+ 34.
Kc1 Qf3 35. Kxc2 Qc6+ 36. Kb1 Qxg6+ 37. Ka1 Qf7 38. e6 $1 Qf1+ ({Or} 38... Qxe6
39. Rxf8+ Bxf8 40. Qxf8+ Kh7 41. Qf5+ {(Milic).}) 39. Ka2 a5 40. Qb3 Qf6 41.
Rb8 Kh7 42. Qd3+ Ng6 43. Qf5 Qd4 44. e7 Qc4+ 45. Kb1 $1 {
Uhlmann carried out a great attack.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.02"]
[Round "8"]
[White "Foguelman, Alberto"]
[Black "Reshevsky, Samuel"]
[Result "0-1"]
[ECO "B55"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e5 6. Bb5+ Nbd7 7. Nf5 d5 8.
exd5 a6 9. Ba4 b5 10. Bb3 Nb6 11. Ne3 Bc5 12. Nc3 Bb7 13. Nf5 $5 {
Foguelman starts an adventure.} ({Usual is} 13. Qd3 O-O 14. Ne4 {
(Reinhardt - Iliescu, Mar del Plata 1946).}) 13... g6 14. Ng7+ $2 (14. Nh6
Nfxd5 15. Ne4 {brings equal chances.}) 14... Kf8 $1 15. Bh6 Kg8 $1 16. Qd2 b4
17. Ne2 $5 a5 $5 {He could take the d-pawn.} 18. d6 $1 Nfd5 $5 19. Ng3 $6 (19.
O-O-O $1 Qxd6 20. Ng3 {brings counter-play.}) 19... Bxd6 20. N7f5 $6 {
He gives up.} gxf5 21. Nxf5 Qf6 22. g4 Bf8 23. Bg5 Qg6 24. h4 h6 $1 25. Be3
Nxe3 26. Nxe3 a4 $1 27. Bc4 Nxc4 28. Nxc4 Bxf3 29. Rf1 Qe4+ 30. Qe3 Qxe3+ 31.
Nxe3 e4 32. Nd5 Kg7 33. Kf2 Rd8 34. Nf4 Bc5+ 35. Kg3 Bd6 36. Rac1 Rhe8 37. c3
Re6 38. g5 hxg5 39. hxg5 Rg6 {Reshevsky scored well.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.04"]
[Round "9"]
[White "Kortschnoj, Viktor"]
[Black "Gligoric, Svetozar"]
[Result "1-0"]
[ECO "E64"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 c5 7. d5 Na6 8. O-O
Nc7 9. a4 a6 10. Bf4 Rb8 11. a5 b5 12. axb6 Rxb6 13. Ra2 Re8 $5 (13... Bd7 {
happened in Kortschnoj - Khasin, Moscow 1957.}) 14. b3 e5 15. dxe6 $5 {
He opens the position.} Nxe6 16. Na4 $5 Nxf4 $1 17. Nxb6 Qxb6 18. gxf4 Ne4 $1 {
Black has enough compensation for the exchange.} 19. Qd3 Nc3 20. Rd2 d5 $2 {
Gligoric overestimates his chances.} ({Better is} 20... Bf5 $1 21. Qxd6 {
(Caputto)} Nxe2+ $1 22. Kh1 Qxd6 23. Rxd6 Nxf4) 21. cxd5 Bf5 22. e4 $1 ({Not} 
22. Qc4 $2 Re4) 22... Nxe4 ({Or} 22... Bxe4 23. Qc4) ({and} 22... Rxe4 23. Nh4)
23. Re2 Bf8 24. Ne5 Nxf2 $5 25. Qf3 Nd3 26. Nc4 $1 Qxb3 27. Rxe8 Qxc4 28. Qe3
$1 Kg7 29. Rd8 Qb4 30. Kh1 Qb6 31. Qe8 Bd6 32. Qh8+ Kh6 33. Qf6 Bc7 34. Qxb6
Bxb6 35. Rd6 Bc7 36. Rxa6 Bxf4 37. Ra4 Be5 38. Rxf5 gxf5 39. d6 Bf6 40. d7 Kg7
41. Ra8 {The Soviet champion competed with Reshevsky for the first place.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.05"]
[Round "10"]
[White "Pachman, Ludek"]
[Black "Wexler, Bernardo"]
[Result "1-0"]
[ECO "D94"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O b6 8. b3
dxc4 $5 ({Usual is} 8... Bb7) 9. Bxc4 Bb7 10. Qe2 c5 11. Rd1 cxd4 12. Nxd4 Qc8
$2 ({Correct is} 12... Nbd7) 13. Ba3 $1 Re8 $2 ({Black should do} 13... Qe8 $5
14. Ncb5 Na6) 14. Rac1 $1 Nc6 15. Bb5 (15. Nxc6 $1 Qxc6 16. f3 Red8 17. Nd5 $1
Nxd5 18. Bxd5 {wins quickly.}) 15... Nxd4 16. exd4 {White gains material.} e6
17. Bxe8 Qxe8 18. d5 $1 Bh6 19. Rc2 exd5 20. Qxe8+ Rxe8 21. Bc1 Bg7 22. Be3 Rc8
23. Rcc1 $1 Kf8 24. Nb5 $1 Rxc1 25. Rxc1 Ne8 $5 ({The pointe is} 25... a6 26.
Nd6 $1) 26. Nxa7 d4 27. Bd2 Ke7 28. Nc8+ Bxc8 29. Rxc8 Be5 30. Rc6 Bc7 31. Rc4
Be5 32. f4 Bg7 33. Rc6 d3 34. Kf1 Bd4 35. Rc4 Bb2 36. Bc3 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.07"]
[Round "11"]
[White "Unzicker, Wolfgang"]
[Black "Fischer, Robert James"]
[Result "1-0"]
[ECO "B98"]
[Annotator "JvR"]
[PlyCount "43"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
Qc7 9. O-O-O O-O 10. Bd3 Nc6 11. Nxc6 bxc6 12. Qg3 $5 ({Theory is} 12. e5 dxe5
13. Qh3 h6 14. Bxh6 gxh6 15. Qxh6 e4 16. Nxe4 Nxe4 17. Bxe4 f5 {
(Paoli - Primavera, Regio Emilia 1958).}) 12... h5 $4 {When Bobby contemplated
about his move, he took the black h-pawn in his hand playfully. So he had to
move it. The white bishop will capture it, if it moves one square.} ({Better is
} 12... e5 $1 13. Rhf1 Nh5 {(Borngaesser - Stean, Groningen 1971).}) 13. e5
dxe5 14. fxe5 Ng4 15. Bxe7 Qxe7 16. Ne4 $1 {The black defence is hopeless.} Qc7
17. h3 $1 Nxe5 18. Nf6+ $1 Kh8 19. Qg5 $1 {Unzicker wins immediately.} Nxd3+
20. Rxd3 gxf6 21. Qxh5+ Kg7 22. Qg4+ {Fischer lost unfortunately.} (22. Qg4+
Kh6 23. Qh4+ Kg6 24. Rg3+ {mates quickly.}) 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.08"]
[Round "12"]
[White "Foguelman, Alberto"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "E01"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 d5 6. Bg2 e5 7. Nb5 d4 8. f4
Nc6 $5 (8... Bc5 9. fxe5 Ng4 {happened in Poulsen - Larsen, Horsens 1953.}) 9.
fxe5 Ng4 10. O-O Be6 11. Qa4 $6 ({Preferable is} 11. Bxc6+ bxc6 12. Nxd4 Bxc4 {
and the chances are about equal.}) 11... Qb6 $1 12. Kh1 Ngxe5 13. Bf4 f6 14.
Nd2 O-O-O $1 15. Bxc6 $2 {White exchanges his strong bishop.} bxc6 $1 16. Na3 (
{The pointe is} 16. Nxa7+ Kb7 $1 17. Bxe5 fxe5 {and White will lose a knight.})
16... Ng6 $6 (16... d3 $1 {attacks in the centre.}) 17. Rac1 Nxf4 18. gxf4 c5
19. Qb5 Bd7 20. Qxb6 axb6 21. Nb5 Kb7 22. Kg1 Ra8 23. Ra1 Bc6 24. Kf2 g6 25.
Ke1 Kc8 26. a4 Kd7 27. Nb3 Be7 28. Kf2 Rhe8 29. Ra2 $6 (29. a5 bxa5 30. Nxa5 {
gives some relief.}) 29... Bf8 30. Rfa1 Re3 31. Nc1 Rh3 32. a5 Rxh2+ 33. Kg1
Rh1+ 34. Kf2 Rxa5 35. Rxa5 bxa5 36. Na7 Bb7 37. Nb3 Rxa1 38. Nxa1 Bd6 39. e3
dxe3+ 40. Kxe3 g5 41. fxg5 fxg5 42. Nc2 {Kortschnoj was trailing Reshevsky.}
0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.08"]
[Round "12"]
[White "Szabo, Laszlo"]
[Black "Evans, Larry"]
[Result "1-0"]
[ECO "E92"]
[Annotator "JvR"]
[PlyCount "107"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. d5 Ne8 8. h3 $5
f5 9. exf5 Bxf5 10. g4 $5 Bd7 11. Ng5 Na6 12. Be3 Qe7 13. Nge4 {
White exerts some pressure on the black position.} Nc5 $5 14. Bxc5 $5 dxc5 15.
h4 Nf6 $6 ({Better is} 15... Qf7 16. f3 Nd6 $1) 16. f3 Nxe4 17. Nxe4 Rf4 $5 18.
Qb3 b6 19. Qd3 Raf8 20. O-O-O $1 {Szabo controls the centre.} h6 21. Rdg1 Be8
22. Qa3 a5 23. Qd3 Kh8 24. Rd1 Bd7 25. Rdg1 Be8 26. Rg3 Bf7 27. Bd1 Rd8 $6 (
27... Qd7 {prevents the next move.}) 28. Ba4 $1 Bg8 29. Qe3 Bh7 30. Bc2 Kg8 31.
Kb1 Rdf8 32. Bd3 Kh8 $6 33. Nc3 $1 e4 $6 {Evans fails to start a counteraction.
} (33... Rd4 34. g5 h5 35. Nb5 Rdf4 {
leads to a great positional advantage for White.}) 34. Bxe4 Bd4 35. Qd3 Qe5 36.
g5 Rxh4 $5 37. Rxh4 Qxg3 38. Rxh6 Qxg5 39. Rh1 Kg7 40. Ne2 Qe3 41. Nxd4 Qxd3+
42. Bxd3 cxd4 43. Be4 {The extra pawn is going to decide the game.} Rf7 44. Kc2
Kf6 45. Kd3 Ke5 46. f4+ $1 Kf6 47. Kxd4 {A second pawn has fallen.} Re7 48. Rg1
Rg7 49. c5 bxc5+ 50. Kxc5 Re7 51. Kd4 Rf7 52. Rc1 Kg7 53. Rc6 a4 54. Ke5 {
Szabo played a fine positional game.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.09"]
[Round "13"]
[White "Bazan, Osvaldo"]
[Black "Benko, Pal"]
[Result "0-1"]
[ECO "A43"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. d5 d6 5. Bb5+ $5 {
Bazan makes a new move in a rare opening.} Nd7 6. a4 Ngf6 7. Nc3 O-O 8. O-O a6
9. Be2 Rb8 10. Re1 Ne8 11. Nd2 e5 12. dxe6 $2 ({My preference has} 12. Nc4 $1)
12... fxe6 13. Nc4 Bd4 14. Be3 Qf6 $5 15. e5 $5 Nxe5 16. Ne4 Qh4 17. Bxd4 cxd4
18. Nxe5 $1 (18. Qxd4 $5 Nc6 19. Qe3 d5 20. Ned6 $1 Nxd6 21. Nxd6 {
brings mutual chances.}) 18... dxe5 19. Bc4 (19. Bf3 $1 {gains a plus.}) 19...
b5 20. axb5 axb5 21. Bd3 Bb7 22. g3 $2 {White opens the protection of his king.
} ({Correct is} 22. f3) 22... Qh3 23. Qe2 $6 ({Better is} 23. Ra7 $1 Nd6 $2 24.
Rxb7 $1 Nxb7 25. Ng5 Qh6 26. Nxe6 {and White attacks.}) 23... Nd6 $1 {Too late!
} 24. Ra7 $2 (24. f3 Bxe4 25. Bxe4 {defends properly.}) 24... Bxe4 25. Bxe4
Nxe4 26. Qxe4 Rxf2 $1 27. Qh1 ({The pointe is} 27. Kxf2 Qxh2+ 28. Kf3 Rf8+)
27... Rbf8 28. Raa1 e4 $1 {Pal Benko decided the game elegantly.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.09"]
[Round "13"]
[White "Reshevsky, Samuel"]
[Black "Pachman, Ludek"]
[Result "1-0"]
[ECO "E46"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 d5 6. a3 Be7 7. cxd5 Nxd5 8.
Qc2 Nxc3 $6 ({Usual is} 8... Nd7) 9. Nxc3 $1 c5 10. dxc5 Bxc5 11. Be2 Nc6 12.
O-O {White has an advantage in development.} Qe7 $2 ({Preferable is} 12... Qh4
$1 13. Rd1 Rd8 14. Rxd8+ Nxd8) 13. b4 Bd6 14. Rd1 Bd7 $6 (14... f5 $5 15. Bb2
a6 {tries to create a defensive screen.}) 15. Bb2 Rfd8 $6 {
The king's rook is needed near the king. He should have moved the other rook.}
16. Ne4 $1 Bb8 (16... Be5 17. Bxe5 Nxe5 18. Qc7 Ng6 19. Qxb7 {costs a pawn.})
17. b5 $1 Ne5 18. Qc5 $1 Kf8 $5 ({Or} 18... Qxc5 19. Nxc5 b6 20. Nxd7 Nxd7 21.
Bf3 {and White gains material.}) 19. Rac1 f6 20. a4 $1 {
The restraint increases.} Nf7 21. Ba3 Qxc5 22. Nxc5 Ke8 $5 ({The pointe is} 
22... Bd6 23. Rxd6 $1 Nxd6 24. Nxb7 {(Caputto).}) 23. Nxb7 Rc8 24. Rxc8+ Bxc8
25. Bf3 $1 {White threatens Bc6+.   Reshevsky took the lead in the tournament.}
1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.11"]
[Round "14"]
[White "Uhlmann, Wolfgang"]
[Black "Taimanov, Mark"]
[Result "0-1"]
[ECO "E40"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 5. Nge2 d5 6. a3 Bf8 $6 {
Does Black retreat a bridge too far?} (6... Be7 {
drew in Botvinnik - Taimanov, Moscow 1951.}) 7. cxd5 exd5 8. Nf4 g6 9. Qb3 Ne7
{Black reorganises his position.} 10. e4 c6 11. Be3 $6 (11. e5 $1 Nd7 12. Bd3 {
gains a plus,}) 11... Bg7 ({The alternative is} 11... Nxe4 $1 12. Nxe4 dxe4 13.
Bc4 Qa5+ 14. Bd2 Qf5) 12. exd5 O-O $5 13. dxc6 bxc6 {
He gave a pawn for his development.} 14. Bc4 Nf5 15. O-O-O $2 ({Caputto prefers
} 15. O-O) 15... Ng4 $1 16. Rhe1 Qc7 17. Rd2 Rb8 18. Qa2 Ngxe3 19. fxe3 Nxe3 $1
20. Rxe3 Qxf4 {Taimanov has regained the pawn with a positional advantage.} 21.
Rf3 Qxh2 22. Kb1 Qg1+ 23. Rf1 Bf5+ 24. Ka1 Qe3 25. Rfd1 Rbd8 26. Re2 Qf4 27.
Re7 Rxd4 28. Rf1 Qh4 29. Bxf7+ Kh8 30. Rxa7 Rb8 31. Be6 Rf4 $1 32. Rc1 Qf2 33.
Re7 Qd2 34. Rd1 Bxc3 $1 {Reshevsky led by one point on Kortschnoj.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.12"]
[Round "15"]
[White "Guimard, Carlos"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "A48"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d6 5. e4 h6 6. Bxf6 Bxf6 7. Bb5+ $5 (7.
e5 Bg7 8. Bb5+ {was played in Guimard - Rabar, Gothenburg 1955.}) 7... c6 8.
Bd3 O-O 9. e5 $5 Bg7 10. Qe2 c5 11. h4 $5 {Guimard wants to attack.} cxd4 $1
12. h5 g5 ({Fischer does not trust} 12... Nc6 $5 13. hxg6 fxg6 14. Bxg6 Nxe5
15. Nxe5 dxe5 16. Qc4+ Kh8) 13. Qe4 f5 $5 14. exf6 Rxf6 15. Nxg5 $1 d5 $1 ({Not
} 15... hxg5 $2 16. Qh7+ Kf7 17. Bg6+ Kf8 18. h6 {(Müller).}) 16. Qh7+ Kf8 17.
O-O-O Nc6 18. f4 Nb4 $1 19. a3 Nxd3+ 20. Qxd3 hxg5 $5 21. h6 Bxh6 $5 22. fxg5
Bf5 $1 {Bobby defends properly.} 23. Rxh6 $2 {Guimard misses the right capture.
} ({Correct is} 23. Qxd4 Qc7 24. c3 {(Smyslov and Tal).}) 23... Bxd3 24. Rh8+
Kg7 $6 (24... Kf7 $1 25. Rxd8 Rxd8 26. gxf6 Rc8 $1 {wins at once (Müller).})
25. Rxd8 Rc6 $1 (25... Rxd8 $4 26. gxf6+ Kxf6 27. cxd3 {costs a piece.}) 26.
Rxa8 Rxc2+ 27. Kb1 Rxd2+ $5 28. Kc1 Rc2+ 29. Kb1 Rc8+ 30. Rxd3 Rxa8 31. Rxd4
Rd8 32. Kc2 $5 Kg6 33. Rf4 Kxg5 34. Rf7 Rd7 35. Kd3 Kg6 36. Rf8 Kg7 $5 37. Ra8
b6 $5 38. Kd4 Kf6 39. Rf8+ Ke6 40. Rg8 Kd6 41. g4 e5+ 42. Kd3 Rh7 43. g5 Ke6
44. g6 Rh3+ 45. Kc2 Rh2+ 46. Kb3 $6 {The king moves away from the central area.
} ({The alternative is} 46. Kd1 $1 Rg2 47. g7 e4 48. Re8+ Kf7 49. Rd8 Rxg7 50.
Rxd5 Ke6 {and Black has an extra, passed pawn.}) 46... Rg2 $1 47. g7 Kf6 48.
Rd8 Rxg7 49. Rxd5 Rc7 50. a4 e4 51. Rh5 e3 52. Rh3 Re7 $1 53. Rh1 e2 54. Re1
Kf5 55. Kc3 Kf4 56. Kd2 Kf3 57. Rh1 Rd7+ 58. Kc2 Kg2 $1 {
Fischer won a difficult rook ending.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.12"]
[Round "15"]
[White "Kortschnoj, Viktor"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "A07"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. g3 d5 2. Bg2 c6 3. Nf3 Nf6 4. O-O Bg4 5. h3 Bxf3 $5 ({Known is} 5... Bh5) 6.
Bxf3 e6 7. Bg2 Be7 8. d4 O-O 9. Nd2 Qb6 10. c3 Rd8 11. e3 $5 c5 12. f4 $5 Nc6
13. Kh1 Qc7 14. Qe2 Rac8 15. g4 $1 {White becomes active.} Ne8 $5 ({
Preferable is} 15... a6 $1 16. g5 Ne8) 16. dxc5 $1 Bxc5 17. e4 $1 dxe4 $6 ({
The alternative is} 17... d4 $1 18. e5 dxc3 19. bxc3 Qa5) 18. Nxe4 Bf8 $5 19.
f5 $1 exf5 20. Bf4 $5 Nd6 $1 21. gxf5 {White pins in a mean way.} Re8 $2 (21...
Qb6 $1 22. f6 g6 {lessens the white grip.}) 22. Qg4 $1 Kh8 23. f6 $1 g6 24. Qg3
$2 (24. Rad1 $1 Rcd8 25. Bxd6 Bxd6 26. Rxd6 $1 Rxd6 27. Qf4 $1 Rd7 28. Qh6 $1
Rg8 29. Ng5 {mates quickly.}) 24... Nxe4 $1 25. Bxe4 Ne5 $2 ({Correct is} 25...
Qa5 $1) 26. Rfe1 $1 {Another pin has become effective.} Bd6 27. Rad1 $1 {
White threatens 28.Rxd6! Qxd6 29.Bxb7.} Rcd8 28. Bg2 Rd7 29. Bxe5 Rxe5 30. Rxd6
$1 {Kortschnoj trailed half-a-point on Reshevsky.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.17"]
[Round "16"]
[White "Foguelman, Alberto"]
[Black "Wade, Robert"]
[Result "0-1"]
[ECO "C88"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4
d6 9. h3 Nxd4 $1 (9... exd4 {
was played in Foguelman - Kampelmacher, Buenos Aires 1959.}) 10. Nxd4 exd4 11.
c3 $1 (11. Qxd4 $4 c5 12. Qd1 c4 {demonstrates a beginner's trick.}) 11... Bb7
$1 12. Qxd4 $2 {The pawn still cannot be captured.} (12. Bc2 dxc3 13. Nxc3 {
continues in gambit style.}) 12... Nxe4 $1 {
A brilliant counteraction refutes the capture.} 13. Rxe4 Bf6 14. Qe3 Bxe4 15.
Qxe4 Re8 16. Qc2 Re1+ {He immobilises the queenside and attacks the king.} 17.
Kh2 Be5+ 18. g3 ({Or} 18. f4 Qf6 $1) 18... Qf6 $1 19. Kg2 ({The first pointe is
} 19. Qd2 Re8 $1 20. Kg2 Bxg3 $1) 19... Bxg3 $1 20. Bd5 ({The second pointe is
} 20. Kxg3 Rae8 $1 21. Kg2 R8e2) 20... Rxc1 $1 21. Qe2 Rd8 (21... Bxf2 $1 22.
Qxf2 Qg5+ {wins more quickly (Caputto).}) 22. fxg3 Qf5 23. Be4 Re8 $1 24. Bxf5
Rxe2+ 25. Kf3 Rxb2 26. a4 Rf1+ 27. Kg4 h5+ 28. Kg5 bxa4 29. Rxa4 Rb5 $1 30. g4
hxg4 31. hxg4 Rfxb1 32. Rxa6 g6 $1 33. c4 Rb6 34. Ra8+ Rb8 35. Be4 Rxa8 36.
Bxa8 Kg7 {The fighting was hard, at all levels of the tournament.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.18"]
[Round "17"]
[White "Olafsson, Fridrik"]
[Black "Uhlmann, Wolfgang"]
[Result "1-0"]
[ECO "E62"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 d6 5. Nf3 Nc6 6. O-O e5 7. d4 O-O 8. d5
Ne7 9. e4 Ne8 10. Rb1 $5 f5 11. Ng5 $1 {Olafsson accepts the challenge.} h6 12.
Ne6 $1 Bxe6 13. dxe6 c6 $1 14. c5 $5 {He gives a pawn.} dxc5 15. b4 $5 cxb4 16.
Rxb4 b6 17. Qb3 $5 Qc7 18. exf5 gxf5 19. Rh4 Rd8 ({The pointe is} 19... Kh7 $2
20. Nb5 $1) 20. Bxh6 Bxh6 21. Rxh6 Kg7 22. Rh4 Nf6 {White has an edge.} 23. Qc4
$2 {He allows a counteraction.} ({Better is} 23. Rc1 $1) 23... Ng6 $1 24. Rh3
Rd4 $1 25. Qe2 Qd6 $6 (25... Qe7 $1 26. Bxc6 Qxe6 {
gains a positional advantage.}) 26. Qa6 Qc7 $6 {Black should have captured e6.}
27. Rc1 $1 Rfd8 $2 {The tables turn.} ({The prudent} 27... Qe7 $1 28. Bxc6 Qxe6
{is alright.}) 28. Nb5 $1 Rd1+ 29. Bf1 $1 Qe7 30. Rxc6 Ne8 $6 31. Rh5 $1 Kf6
32. Nc3 Re1 33. Qc4 Qb7 34. Rh6 Kg7 35. Rxg6+ $1 Kxg6 36. e7+ Rd6 37. Qg8+ Kf6
$5 38. Qxe8 $5 ({White misses} 38. Nd5#) 38... Qxe7 39. Nd5+ {
Olafsson won by a nice attack.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.18"]
[Round "17"]
[White "Reshevsky, Samuel"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "A70"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg4 8. Qb3
$5 Qe7 9. Nd2 Bg7 10. Qb5+ Kf8 $1 ({Not} 10... Qd7 11. h3 $1 Qxb5 12. Nxb5) 11.
f3 Bc8 12. Nc4 Nbd7 13. Bf4 Ne8 14. Qb3 Ne5 15. Be2 h5 16. O-O h4 17. Be3 Nxc4
18. Qxc4 Bd7 19. a4 a6 20. Qd3 Rc8 21. Qd2 Nf6 22. Rae1 Nh5 23. Bc4 Re8 24. a5
$1 {White has a plus.} Qd8 25. Ne2 b5 26. axb6 Qxb6 27. Ra1 Bb5 $6 ({Better is
} 27... Ra8 $1 28. Rfb1 a5) 28. Bxb5 axb5 29. Ra2 Bf6 $2 (29... b4 $1 30. Rfa1
Bf6 {avoids the loss of a pawn.}) 30. b4 $1 Qc7 31. bxc5 dxc5 32. Qa5 {
He gains a pawn.} Rc8 33. Qxb5 Kg7 34. f4 Rhe8 35. e5 $1 Bxe5 36. fxe5 Rxe5 37.
Qd3 Rce8 38. Bc1 Kg8 39. d6 Qd7 40. Nf4 {
Reshevsky stayed half-a-point ahead of Kortschnoj.} 1-0

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.19"]
[Round "18"]
[White "Uhlmann, Wolfgang"]
[Black "Evans, Larry"]
[Result "0-1"]
[ECO "D95"]
[Annotator "JvR"]
[PlyCount "136"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 g6 5. Nc3 Bg7 6. Qb3 O-O 7. Bd2 b6 8. Bd3
Bb7 9. O-O e6 10. a4 $5 dxc4 11. Bxc4 c5 $1 12. dxc5 Bxf3 13. gxf3 Nc6 14. Rfd1
Na5 15. Qa2 bxc5 16. Be2 Qb6 17. Be1 Rab8 18. Rab1 Rfc8 19. Qa3 Bf8 20. Nb5 Nd5
$1 {Black has taken the initiative on the queenside.} 21. Qd3 a6 22. Nc3 Nb4
23. Qe4 Bg7 24. Qh4 Nc2 25. Ne4 Nxe1 26. Rxe1 c4 27. Rec1 Qb4 28. Rd1 $2 ({
Correct is} 28. b3 $1 c3 $1 29. Bxa6 Rc7 30. Bb5 Kh8 {
and the chances are about equal.}) 28... Qxa4 {Evans gains a pawn.} 29. Nd6 Rf8
30. Nxc4 Bxb2 $1 31. Qf4 Nxc4 32. Bxc4 $2 (32. Qxc4 Qxc4 33. Bxc4 a5 34. Rd2 {
gives better drawing chances.}) 32... Rfc8 33. Rd2 $5 Be5 $5 34. Rxb8 Bxb8 35.
Qd4 Bxh2+ 36. Kxh2 Qxc4 {Black has won a second pawn.} 37. Qf6 Qc7+ 38. Kg2 a5
39. Rd4 Ra8 40. Qh4 e5 41. Rc4 Qd8 {The game is adjourned.} 42. Qe4 Rc8 $1 {
Evans returns one pawn in order to exchange.} 43. Rxc8 Qxc8 44. Qxe5 a4 45. Qa5
Qc4 46. f4 h5 $1 {The distant passed pawns are strong.} 47. f5 Qg4+ 48. Kf1
Qd1+ 49. Kg2 Qg4+ 50. Kf1 gxf5 51. Qa8+ Kg7 52. f3 Qh3+ 53. Ke2 Qh2+ 54. Kd3
Qd6+ 55. Kc3 Qc5+ 56. Kd3 Qd6+ 57. Kc3 a3 $1 58. f4 h4 59. Qh1 Qf6+ 60. Kd3
Qa6+ 61. Kd2 a2 62. Qa1+ Kh7 63. Ke1 Qb7 $1 64. Kd2 Qb4+ 65. Ke2 Qc4+ 66. Kd2
Qd5+ 67. Ke2 h3 68. Qf6 Qe6 {Evans played a fine tournament.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.19"]
[Round "18"]
[White "Wexler, Bernardo"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "E46"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 d5 6. a3 Be7 7. cxd5 Nxd5 8. g3
b6 9. Bg2 Bb7 10. e4 $5 Nxc3 11. bxc3 Nc6 12. O-O Na5 13. Nf4 Re8 14. Re1 Bf8
15. Rb1 c5 16. d5 e5 17. Nh3 $5 c4 18. Bf1 Rc8 19. a4 Rc7 20. f3 Bc8 21. Nf2
Bd7 22. Be3 Bd6 23. Qc2 Rf8 24. Ra1 Qf6 25. Qd1 Rfc8 26. Ng4 $5 Bxg4 27. fxg4
Bc5 28. Bxc5 Rxc5 29. Ra2 Nb7 30. Rf2 Qe7 31. h4 Nd6 32. g5 Rf8 33. Bh3 Ra5 {
Black has the initiative.} 34. Qc2 $2 {Pawn a4 needs protection.} (34. Ra2 b5
35. Qa1 bxa4 36. Rxa4 Rxa4 37. Qxa4 {defends properly.}) 34... Qe8 35. Ref1 $6
Qxa4 36. Qe2 Qb3 37. Qg4 $2 ({Correct is} 37. Rc1) 37... Qxc3 $1 38. Qd7 Nxe4
39. Rxf7 {This dangerous counteraction will be refuted.} Qe3+ $1 {
Kortschnoj caught up with Reshevsky by this win.} ({The pointe is} 39... Qe3+
40. Kh1 Nxg3+ 41. Kg2 Ra2+ 42. R1f2 Rxf2+ 43. Rxf2 Qxf2#) 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.21"]
[Round "19"]
[White "Foguelman, Alberto"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "C87"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c4 Bg4 $5 ({
Usual is} 7... O-O) 8. h3 Bxf3 9. Qxf3 O-O 10. Bxc6 bxc6 11. d3 Nd7 12. Be3 c5
$5 13. Nc3 c6 14. Nd1 $5 Re8 15. Bd2 Nf8 $1 16. Bc3 Ne6 17. Ne3 g6 18. g3 Bf8
19. Kg2 a5 20. h4 h5 21. Kg1 Bg7 22. Ng2 {White plays passively.} Qd7 23. Qd1
$6 Nd4 $1 24. Bxd4 $6 cxd4 {Black charges automatically.} 25. f4 $6 Rab8 26.
Rb1 d5 $1 {He starts an attack in the centre.} 27. cxd5 cxd5 28. Qf3 $5 dxe4 $1
29. dxe4 Rec8 30. Re2 $6 (30. Red1 exf4 31. gxf4 Rc2 {conquers the second rank.
}) 30... Rc3 $1 {Black triumphs elegantly.} 31. Qf2 $5 ({The pointe is} 31.
bxc3 Rxb1+ 32. Re1 Rxe1+ 33. Nxe1 dxc3 34. Qxc3 exf4) 31... Qg4 32. Rf1 Rxg3
33. fxe5 Rb7 34. Rc2 Bxe5 35. Rc5 Bf4 $1 {
Szabo secured the third prize by this win.} 0-1

[Event "Buenos Aires"]
[Site "Sesquicentenario"]
[Date "1960.07.21"]
[Round "19"]
[White "Kortschnoj, Viktor"]
[Black "Uhlmann, Wolfgang"]
[Result "1/2-1/2"]
[ECO "D91"]
[Annotator "JvR"]
[PlyCount "100"]
[EventDate "1960.06.??"]
[SourceDate "1999.07.01"]

{Reshevsky played the risky Polugaevsky Variation with Black, but a repetition
of moves occurred soon. So Kortschnoj could play for a win of his game and the
tournament.} 1. c4 Nf6 2. Nc3 g6 3. d4 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. Bf4 Nxc3 7.
bxc3 c5 8. e3 Nc6 9. cxd5 Qxd5 10. Be2 $5 ({The alternative is} 10. Qb3 Qxb3
11. axb3 {(Kopylov - Shamkovich, Leningrad 1955).}) 10... cxd4 11. cxd4 Qa5+
12. Qd2 Qxd2+ 13. Kxd2 {White has little advantage after the exchanges.} O-O
14. Rhb1 b6 15. Rc1 Bb7 16. Rc3 Rfd8 17. Ke1 Rac8 18. Rac1 Nb4 19. Rxc8 Rxc8
20. Rxc8+ Bxc8 {The chances are equal after more exchanges.} 21. a3 $5 Nd5 (
21... Nc2+ $5 22. Kd2 Nxa3 {takes a risk.}) 22. Bb8 a6 23. Ne5 Bf8 24. Kd2 e6
25. a4 f6 26. Nd3 Bd7 27. Bd1 Nb4 28. Nf4 g5 29. Ne2 Nd5 $6 30. e4 $1 Ne7 31.
Bc7 Nc8 32. Nc3 b5 33. axb5 axb5 34. Be2 Bd6 $2 ({Better is} 34... Nd6 $1 35.
Bxd6 Bxd6 36. Bxb5 Bxb5 37. Nxb5 Bxh2 $1 38. g3 h5 39. Ke3 h4 40. Kf3 h3 41.
Kg4 Bg1 $11) 35. Bxd6 $2 (35. Bxb5 $1 Bxb5 36. Nxb5 Bxc7 37. Nxc7 {
wins a pawn and the tournament.}) 35... Nxd6 36. f3 Kg7 37. Kc2 b4 38. Na2 Ba4+
$6 (38... Bb5 $1 39. Bxb5 Nxb5 40. d5 Nd4+ 41. Kd3 b3 42. Nc3 Nc2 {draws.}) 39.
Kb2 Nb5 40. d5 $1 exd5 41. exd5 Nd4 $6 (41... Kf7 $1 42. Nxb4 Ke7 {
seems to survive.}) 42. Bd3 b3 43. Nb4 $2 (43. Nc3 $1 Be8 44. Ne4 {
plays for a win.}) 43... f5 44. Kc3 Nb5+ 45. Bxb5 Bxb5 46. Nc6 $5 (46. Kxb3 Kf6
{brings little winning chances (Caputto).}) 46... Kf6 47. Kxb3 Bf1 48. Kb4 Bxg2
49. Kc5 f4 50. d6 Bh3 {So Kortschnoj could not triumph.   The final standings
became: Kortschnoj and Reshevsky 13/19 ($900), Szabo 12 ($700), Evans, Guimard,
Rossetto and Taimanov 11 ($450), Unzicker and Olafsson 101/2 ($150), Gligoric
10, Uhlmann and Benko 9, Ivkov, Fischer, Wexler and Pachman 81/2, Eliskases 8,
Bazan 6, Wade and Foguelman 51/2. Non-prize winners got $100. Guimard,
Rossetto, Wexler, Eliskases and Bazan received extra prizes in pesos. The
government spent substantial amounts of money on one of the greatest
tournaments of its time.} (50... Bh3 51. Kb6 $1 Be6 52. Nd4 g4 $1 53. Kc7 gxf3
54. Nxf3 Bh3 {draws quickly.}) 1/2-1/2

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "1"]
[White "Najdorf, Miguel"]
[Black "Goldenberg, E."]
[Result "1-0"]
[ECO "D40"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

{The twenty-fourth tournament in Mar del Plata was played from 12 until 31 iii
1961. Tournament hall was Hotel Provincial. Special guests were Robert Byrne,
Filip and Matanovic among the sixteen participants.} 1. d4 Nf6 2. c4 e6 3. Nc3
c5 4. e3 d5 5. Nf3 Nc6 6. a3 Ne4 7. Bd3 Nxc3 8. bxc3 Be7 9. O-O O-O 10. Qc2 g6
11. Rd1 $5 dxc4 $6 ({Preferable is} 11... Qc7) 12. Bxc4 Qc7 13. Ba2 Bd7 14. e4
Rac8 15. Qd2 Rfd8 16. Qh6 {Najdorf takes the initiative.} Bf8 17. Qh4 cxd4 18.
cxd4 $6 ({Better is} 18. Bf4 $1 Bd6 19. Bxd6 Qxd6 20. cxd4) 18... Bg7 $6 (18...
Nxd4 $1 19. Nxd4 Ba4 $1 20. Bf4 Qc3 21. Rac1 Qxd4 22. Rxd4 Rxc1+ 23. Bxc1 Rxd4
24. h3 Rd1+ 25. Kh2 Rxc1 {leads to equal chances.}) 19. Bf4 $1 Qa5 20. d5 $5
exd5 (20... Bxa1 21. dxc6 Bxc6 22. Rxa1 {favours White.}) 21. Ng5 $1 h6 22.
Nxf7 $1 Kxf7 23. Rxd5 Be6 24. Rxa5 Bxa2 25. Rb5 $2 (25. Rf5+ $1 gxf5 26. Qh5+
Kg8 27. Rxa2 {ends the game wonderfully.}) 25... Bxa1 26. Rxb7+ Kg8 27. h3 Bf7
$5 28. Bxh6 Ne5 $5 29. Kh2 $5 Re8 $5 30. Bg5 $1 Rc6 31. Rb1 Bd4 32. Rd1 Bb2 33.
Be3 Nc4 34. Bxa7 Bxa3 35. Bd4 Kf8 $6 (35... Ne5 {offers more resistance.}) 36.
Bf6 $1 Bg8 37. Qh6+ Kf7 38. Ba1 Bd6+ 39. f4 Bf8 40. Qg5 Ne3 41. Rd7+ Ke6 42.
Ra7 {Miguel Najdorf was the great man again.} 1-0

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "4"]
[White "Bielicki, Carlos"]
[Black "Matanovic, Aleksandar"]
[Result "0-1"]
[ECO "A16"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e3 d6 6. Nge2 c6 7. d3 $5 ({
Usual is} 7. O-O) 7... e5 8. Rb1 Be6 9. b3 Qd7 10. h3 d5 $1 {
Black takes the initiative.} 11. Ba3 $6 ({Preferable is} 11. f4 $1 exf4 12.
Nxf4) 11... Re8 12. cxd5 Nxd5 13. Nxd5 cxd5 14. h4 Nc6 15. O-O Bh3 16. Bb2 $5
Bxg2 17. Kxg2 Qf5 18. a3 Rad8 19. b4 e4 $6 {Black makes a premature advance.}
20. Bxg7 Kxg7 21. d4 $1 Ne7 22. Rc1 $6 (22. Nf4 $1 {equalises.}) 22... Rc8 23.
Qd2 h6 24. Rxc8 Nxc8 25. Nc3 Nb6 26. Qe2 a6 27. b5 a5 28. Na2 $6 (28. Rc1 Rc8
29. Na2 Rxc1 30. Nxc1 Qc8 31. Nb3 Qc4 32. Qxc4 Nxc4 33. b6 {defends properly.})
28... Nc4 $1 29. a4 Nb6 30. Nc1 $5 (30. Nc3 Rc8 31. Qd2 Rc4 {favours Black.})
30... Nxa4 31. Qa2 Nb6 32. Qxa5 Nc4 $1 33. Qa2 g5 $5 34. Qe2 (34. hxg5 hxg5 35.
Qe2 Rh8 36. Rh1 Rxh1 37. Kxh1 Qd7 $1 {conquers a pawn.}) 34... gxh4 35. gxh4
Kh7 36. Kh2 $2 (36. Rg1 Rg8+ 37. Kh2 Qf6 $1 {gains pawn h4.}) 36... Qf6 $1 {
Matanovic scored a solid win.} (36... Qf6 37. Kh3 Rg8 38. f3 Qg6 39. Qf2 Nd2 $1
{delivers a mating attack.}) 0-1

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "6"]
[White "Dominguez, Christobal"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "B21"]
[Annotator "JvR"]
[PlyCount "120"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

1. e4 g6 2. d4 c5 3. dxc5 Qa5+ 4. Bd2 $5 (4. Nc3 $5 {
was played in Bogoljubow - Mieses, Mannheim 1914.}) 4... Qxc5 5. Bc3 Nf6 6. Nd2
d6 7. Nb3 Qc7 8. f4 Bg7 9. Bd3 Nc6 10. Nf3 O-O 11. Qe2 $5 ({Preferable is} 11.
Qd2) 11... Nh5 $1 12. Qd2 Bh6 13. g3 e5 $1 14. Qg2 $1 Bg7 ({Not} 14... exf4 $2
15. g4) 15. fxe5 dxe5 16. O-O-O a6 17. Bc4 Bg4 18. Bd5 Rac8 19. Rd3 b5 20. h3
Bxf3 21. Rxf3 b4 22. Bxc6 $2 ({Better is} 22. Rhf1 $1 bxc3 23. Rxf7 cxb2+ 24.
Kxb2 Rxf7 25. Rxf7 Qxf7 26. Bxf7+ Kxf7 27. Qf1+ Nf6 28. Qxa6) 22... bxc3 23.
Rxc3 Qb6 24. Bd5 Rxc3 25. bxc3 Qe3+ 26. Qd2 Qxg3 {
White's pawn structure has been ruined.} 27. c4 Qf3 $5 28. Qd1 Bh6+ $5 29. Kb1
Qe3 30. Qe1 Rb8 31. Qa5 Qf3 32. Re1 Bf8 33. Qc7 Re8 34. c5 Re7 35. Qa5 Nf4 36.
Qxa6 $2 {He should maintain his pressure on the queenside.} (36. c6 $1 Qxh3 37.
Nc5 {develops strong counter-play.}) 36... Nxd5 37. exd5 Qxd5 38. Qd3 Qc6 39.
Qe4 Qxe4 40. Rxe4 f5 41. Rc4 Kf7 42. a4 Ke6 43. a5 Kd5 $6 {
The king cannot stop the pawns.} 44. Rb4 e4 45. c4+ Ke5 $1 46. Kc2 f4 47. a6 f3
48. Rb8 Bh6 49. Rb7 Re6 50. a7 $2 (50. c6 $1 f2 $1 51. a7 f1=Q 52. a8=Q Qxc4+
53. Kb2 {fights for survival.}) 50... Ra6 51. Nd2 Bxd2 52. Kxd2 Ra2+ 53. Kc3 ({
The pointe is} 53. Ke3 Re2#) 53... f2 54. Rf7 e3 55. Kd3 Rxa7 56. Rf3 Ra3+ 57.
Kc2 Ke4 58. Rf7 Ra2+ 59. Kc1 Ra1+ 60. Kb2 Rb1+ {
Rossetto scored a beautiful victory.} 0-1

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "7"]
[White "Byrne, Robert"]
[Black "Filip, Miroslav"]
[Result "1-0"]
[ECO "E60"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. d5 cxd5 5. cxd5 d6 6. Bg2 Bg7 7. Nf3 O-O 8. Nc3
Bd7 9. O-O $5 ({Known is} 9. Nd4) 9... Qc8 $5 10. Be3 Bh3 11. Rc1 Bxg2 12. Kxg2
Na6 13. Bd4 Qd7 {Black has been playing quietly.} 14. e4 Rfc8 15. Re1 Ne8 $5
16. Rc2 Bxd4 17. Nxd4 Rc4 18. Rce2 $5 Nf6 19. Nf3 $5 {
White could advance in the centre.} Rc5 $5 20. h3 $5 {He hesitates again.} Nc7
$1 21. Nd4 Nce8 22. f4 Rac8 23. Nb3 R5c7 24. e5 $1 {At last.} dxe5 $2 {
The central area should remain closed.} ({Better is} 24... Nh5) 25. fxe5 Nh5
26. Rf2 $1 f5 27. g4 $1 Nhg7 28. Nd4 {White threatens to conquer f5.} Rxc3 $5 {
Filip makes a desperate attempt.} 29. bxc3 Rxc3 30. gxf5 Qxd5+ 31. Kh2 Rc4 32.
Rd2 Qa5 $5 33. fxg6 hxg6 34. Nb3 Qb6 35. Rg2 Kh7 36. Qd3 Rh4 37. Reg1 Rh6 ({Or
} 37... Nf5 38. Rxg6 $1 Qxg6 39. Rxg6 Kxg6 40. Nc5) 38. Nd4 Nh5 39. Qe4 Neg7
40. Nf3 Nf5 41. Ng5+ Kg7 42. Qd5 {Robert Byrne defeated a strong opponent.} 1-0

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "12"]
[White "Silva Nazzari, Roberto"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E82"]
[Annotator "JvR"]
[PlyCount "48"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f3 c5 6. Nge2 b6 7. Be3 d6 8. Qd2
Nc6 9. d5 Ne5 $5 {This will become the popular move.} ({Known is} 9... Na5) 10.
Nc1 ({The alternative becomes} 10. Ng3 $5) 10... e6 11. b3 $5 exd5 12. cxd5 a6
13. Nd3 Nfd7 14. Rc1 f5 $1 15. Be2 $6 Nxd3+ 16. Bxd3 Ne5 17. O-O f4 $1 {
The attack on the kingside begins.} 18. Bf2 g5 $5 19. h3 $2 {
White weakens his defence.} ({Correct is} 19. Be2 $1 g4 $1 20. Kh1 gxf3 21.
Bxf3) 19... Bxh3 $1 20. Bxc5 $5 Bxg2 $1 21. Kxg2 ({The pointe is} 21. Bxb6 Bxf1
$1 22. Bxd8 Nxf3+) 21... bxc5 22. Be2 g4 $1 23. fxg4 Qg5 24. Qd1 h5 {
Najdorf won many games.} 0-1

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "13"]
[White "Byrne, Robert"]
[Black "Dominguez, Christobal"]
[Result "0-1"]
[ECO "B00"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

{Najdorf led by half-a-point on Byrne and Matanovic.} 1. d4 Nc6 2. Nf3 d6 3. e4
Bg4 {Black plays the Nimzowitsch Defence.} 4. Bb5 a6 5. Ba4 Nf6 $5 (5... b5 $1
6. Bb3 Nf6 {was played in Eliskases - Mikenas, München 1936.}) 6. c4 Nd7 7. Be3
e5 8. d5 Bxf3 9. Qxf3 Ne7 $2 {He allows restraint.} ({Better is} 9... Nd4 $1
10. Qg4 g6) 10. Nc3 Ng6 11. h4 $1 Be7 12. h5 $1 Ngf8 13. Qg4 Bf6 14. b4 $6 (14.
h6 $1 g6 15. O-O {prevents counter-play.}) 14... h6 $1 {
The counteraction begins quietly.} 15. c5 {Byrne advances on all fronts.} Bg5
$1 16. O-O Nh7 17. Bxg5 hxg5 18. c6 bxc6 19. Bxc6 Rb8 20. b5 $2 (20. a3 $1 Nhf6
21. Qxg5 Rxh5 $1 22. Qxg7 Ke7 23. Rfb1 {keeps an edge.}) 20... axb5 21. Nxb5
Nhf6 $1 22. Qxg5 Rxh5 23. Qxg7 Ke7 $1 24. Na7 $2 (24. Bxd7 $1 Rh7 25. Qxh7 $1
Nxh7 26. Bf5 Rxb5 27. Bxh7 {fights for survival.}) 24... Rh7 $1 25. Qg5 Qh8 $1
26. g3 Rg8 (26... Rh1+ $1 27. Kg2 Qh3+ 28. Kf3 Rxf1 {wins at once.}) 27. Qf5
Rh5 $5 28. Qf3 (28. Bxd7 $5 Rxf5 29. Bxf5 Nh5 $1 30. Nc6+ Kf6 {
leads to a decisive black attack.}) 28... Qh7 $5 29. Bxd7 Rh8 $1 30. Bh3 $5
Rxh3 31. Nc6+ Kf8 32. Qf5 Rxg3+ $1 {Robert Byrne had lost to an outsider.} 0-1

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "13"]
[White "Najdorf, Miguel"]
[Black "Matanovic, Aleksandar"]
[Result "1-0"]
[ECO "E14"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

{The decisive game of the tournament began.} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3
Bb7 5. Bd3 Be7 6. O-O O-O 7. Nc3 d5 8. b3 Nbd7 9. Bb2 c5 10. Qe2 cxd4 11. exd4
Rc8 12. Rad1 Qc7 $5 13. Ne5 $1 dxc4 14. bxc4 Rfd8 15. f4 $5 {
Najdorf attacks on the kingside.} (15. Nb5 $1 Qb8 16. Nxd7 Rxd7 17. d5 $1 {
charges in the centre.}) 15... Nf8 $2 {Matanovic allows the next advance.} ({
Better is} 15... g6 $1 16. Rde1 Nf8) 16. f5 $1 {
White is going to exchange the pawns which block his pieces.} a6 17. fxe6 fxe6
18. Kh1 Ba8 $5 19. d5 $1 Re8 (19... exd5 20. Nxd5 Nxd5 21. cxd5 Bxd5 {(Najdorf)
} 22. Qh5 {wins for White.}) 20. Ng4 $1 exd5 21. Nxd5 {
Another diagonal has been opened.} Nxd5 22. cxd5 Bxd5 23. Nh6+ $1 Kh8 ({
The pointe is} 23... gxh6 24. Qg4+ Bg5 25. Qd4 $1 {(Najdorf).}) 24. Qg4 Bd6 25.
Nf7+ $1 {Miguel triumphed. The top became: Najdorf 111/2, Matanovic and Byrne
10, Filip and Rossetto 91/2.} 1-0

[Event "Mar del Plata"]
[Site "24"]
[Date "1961.??.??"]
[Round "15"]
[White "Reinhardt, Enrique"]
[Black "Filip, Miroslav"]
[Result "0-1"]
[ECO "D91"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1961.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8.
Nh3 $5 ({Usual is} 8. Nf3 exd5 9. e3) 8... exd5 9. Nf4 Nc6 10. e3 Ne7 11. Bd3
O-O 12. O-O c5 $5 13. dxc5 d4 $1 14. Nb5 (14. Na4 $5 dxe3 15. fxe3 Nf5 $1 16.
Bxf5 Qxd1 17. Raxd1 Bxf5 {brings mutual chances.}) 14... dxe3 15. fxe3 Bxb2 16.
Rb1 Be5 17. Qb3 $6 (17. Qf3 $1 a6 18. Nd6 Bxd6 19. cxd6 Qxd6 20. Be4 Rb8 21.
Bxb7 {regains the pawn.}) 17... a6 $1 18. Nd6 Bxd6 19. cxd6 Qxd6 20. Be4 Qe5 $1
21. Nd5 $1 Rb8 $2 (21... Nxd5 22. Qxd5 Qe7 23. Qd4 Rb8 {gains an advantage.})
22. Nf6+ $2 (22. Qb2 $1 Qxb2 23. Nxe7+ Kg7 24. Rxb2 {wins a piece.}) 22... Kg7
{Black has an extra pawn.} 23. Rbd1 Be6 24. Qb4 Nc6 25. Qe1 h6 26. Rd2 Rbd8 27.
Bxc6 bxc6 28. Rc2 c5 29. h4 Rd3 30. Re2 Rfd8 31. Qf2 Rd1 32. Ree1 Rxe1 33. Qxe1
c4 34. h5 g5 35. Rf3 Rb8 36. e4 c3 37. Qd1 Qc5+ 38. Kh2 Qc7+ 39. Kh1 c2 40. Qc1
Rb1 {The final standings became: Najdorf 121/2/15, Byrne, Filip, Matanovic and
Rossetto 111/2, Letelier Martner 9, Bielicki 71/2, Dominguez 7, Reinhardt 61/2,
Pelikan and Perez Perez 6, Wexler 51/2, Goldenberg 5, Camara 41/2, Quinones 21/
2, Silva Nazzari 2.} 0-1

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "2"]
[White "Polugaevsky, Lev"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "B00"]
[Annotator "JvR"]
[PlyCount "107"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

{The twenty-fifth tournament in Mar del Plata was played at Hotel Scafidi from
21 iii until 13 iv 1962. Special guests were Polugaevsky, Smyslov, Szabo,
Donald Byrne, Pachman, Parma and Penrose among the sixteen participants.} 1. d4
Nc6 2. e4 e5 3. d5 Nce7 4. Bd3 Ng6 {
The Nimzowitsch Defence leads to an acceptable position for Black.} 5. Be3 Bb4+
$5 (5... Nf6 {was played in Szabo - Rossetto, Buenos Aires 1960.}) 6. Nd2 Ba5
$5 7. c4 Nf6 8. a3 Bxd2+ 9. Bxd2 d6 10. Ne2 Nh5 ({Preferable is} 10... Nh4 $1
11. Kf1 O-O) 11. g3 Bg4 12. Qa4+ Qd7 13. Qxd7+ Bxd7 14. f3 O-O 15. O-O a5 $6 ({
Polugaevsky suggests the solid} 15... Nf6) 16. b4 $1 {
He takes the initiative on the queenside.} axb4 17. axb4 Ne7 18. Nc3 g6 19. Be2
Ng7 $6 (19... f5 {gives some counter-play.}) 20. Bg5 Rxa1 21. Rxa1 f6 22. Be3
Rb8 23. c5 Ne8 24. f4 Kg7 25. Nb5 Nc8 26. fxe5 fxe5 27. Bg5 $1 {
The restraint increases.} c6 28. Nc3 h6 29. Bd8 $1 dxc5 30. bxc5 Ncd6 $5 31.
Ba5 $1 Nf7 32. Bb6 h5 33. Ra7 Kf6 34. Bc4 Ng5 35. Kf2 h4 36. gxh4 Nh3+ 37. Ke3
Nf4 38. dxc6 Bxc6 39. Nd5+ $1 Bxd5 40. exd5 $6 (40. Bxd5 $1 Nxd5+ 41. exd5 Kf5
{(Polugaevsky)} 42. Ra2 $1 {wins quickly.}) 40... Kf5 $1 41. d6 Nf6 42. Bc7 Rh8
$1 43. Rxb7 Rxh4 44. Bb6 N6d5+ 45. Bxd5 Nxd5+ 46. Kf2 Rf4+ 47. Kg1 Rg4+ 48. Kh1
$1 Rd4 49. d7 $2 ({Correct is} 49. Ba5 $1 Ne3 50. Kg1) 49... Nxb6 $2 {
Rossetto misses a hidden chance.} (49... Rd1+ $1 50. Kg2 Rd2+ 51. Kf1 ({
the pointe is} 51. Kg3 $4 Ne3 $1 52. d8=Q Nf1+ 53. Kf3 e4#) 51... Nxb6 52. cxb6
Ke6 53. Rc7 Rxd7 54. b7 Rd1+ 55. Ke2 Rb1 {and Black escapes.}) 50. cxb6 Ke6 51.
Kg2 $1 g5 $5 {Capture on d7 leads to a lost pawn ending.} 52. Kf3 $1 Ke7 53.
Rc7 Kd8 54. Rc8+ $1 {Polu had a great start.} 1-0

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "3"]
[White "Byrne, Donald"]
[Black "Smyslov, Vassily"]
[Result "1-0"]
[ECO "A21"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 d6 3. g3 Bg4 $5 4. d4 Nc6 $6 ({Preferable is} 4... exd4 5. Qxd4
{(Becker)} Be6 $1 6. Nf3 Nc6 {and equality.}) 5. d5 $1 Nb8 $5 6. Bg2 Nf6 7. Nf3
Be7 8. h3 Bd7 {Black has a crammed position.} 9. O-O O-O 10. e4 Na6 11. Be3 Ne8
$5 12. Ne1 c5 13. f4 Bf6 14. Nf3 exf4 15. gxf4 Bxc3 $5 ({Or} 15... Qe7 16. Qd3
Rc8 17. Rae1 {and Black will lose the battle in the centre.}) 16. bxc3 Qa5 $5
17. Qd3 $1 b5 $5 (17... f6 18. e5 $1 fxe5 19. Ng5 $1 Bf5 20. Be4 Bxe4 21. Nxe4
{leads to a white attack.}) 18. cxb5 Qxb5 19. Qd2 $5 Rb8 $2 (19... Nf6 $1 20.
e5 Ne4 21. Qc2 Qc4 {brings counter-play.}) 20. Rfb1 $1 Qxb1+ ({
The alternative is} 20... Qa5 21. Rxb8 Nxb8 22. e5 $1 {(Becker).}) 21. Rxb1
Rxb1+ 22. Kh2 f6 $6 (22... Rb6 23. e5 Bf5 {offers more resistance.}) 23. e5 $1
fxe5 24. fxe5 Nac7 $6 25. exd6 Nxd6 26. Bxc5 Nce8 27. Nd4 Rf6 28. Qe2 Rg6 29.
Nc6 $1 Bxc6 30. dxc6 Rb5 31. Bd5+ Kh8 32. Bxd6 Nxd6 33. c7 $1 {
Donald Byrne was the brother of Robert.} ({The pointe is} 33. c7 Rxd5 34. c8=Q+
Nxc8 35. Qe8#) 1-0

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "3"]
[White "Pachman, Ludek"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "A75"]
[Annotator "JvR"]
[PlyCount "117"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 a6 7. a4 g6 8. e4 Bg7
9. Be2 O-O 10. O-O Bg4 11. h3 Bxf3 12. Bxf3 Nbd7 13. Bf4 Ne8 14. Be2 {
White has a plus in the Ben-Oni.} Qe7 $5 (14... Qc7 {
was played in Smyslov - Filip, Wien 1957.}) 15. Qd2 $1 Nc7 (15... Bxc3 $2 16.
bxc3 Qxe4 $2 17. Rfe1 $1 {wins for White (Pachman).}) 16. Rfe1 Rfb8 17. Bf1 Qf8
18. Kh1 b6 19. Bh2 Rb7 20. f4 {The preparations of the attack are ready.} f6 $1
21. e5 $5 {The centre will be opened be sacrifices.} fxe5 22. fxe5 Nxe5 23.
Bxe5 Bxe5 24. Rxe5 $1 dxe5 25. d6 Rd8 $2 ({Right is} 25... Ne8 $1 26. Qd5+ {
(Pachman)} Rf7 $1 27. Qxa8 Rxf1+ 28. Rxf1 Qxf1+ {
and Black delivers perpetual check.}) 26. Bc4+ Kh8 27. Ne4 $6 (27. Qg5 $1 Qxd6
28. Ne4 Qf8 29. Rf1 {wins for White (Pachman).}) 27... Ne8 28. Rf1 $1 Qg7 29.
Be6 b5 $6 (29... h6 $1 30. Qd5 a5 31. d7 Rbxd7 32. Bxd7 Rxd7 33. Qe6 Re7 34.
Qxb6 Rf7 {fights for the last chance.}) 30. Qg5 $1 Rbd7 31. Rf7 $6 (31. Bxd7
Rxd7 32. axb5 axb5 33. Qd2 $1 {brings a positional triumph.}) 31... Rxf7 32.
Qxd8 Rf8 33. d7 Nf6 {Szabo defends courageously.} 34. Qxf6 $1 Rxf6 35. d8=Q+
Rf8 36. Qd5 bxa4 $6 37. Qxc5 h6 38. Bc4 Rd8 39. Kh2 a5 $6 40. Qxa5 Qe7 41. Qxa4
Kg7 42. Qc6 h5 43. Bd5 h4 44. b4 Qf8 45. Qc7+ Kh6 46. Qxe5 Qf5 47. Qxf5 gxf5
48. Nc3 Rc8 49. Na2 Kg5 50. b5 Rc5 51. Bc6 Rc4 52. Bd7 Rd4 53. Be6 Kf6 54. b6
$1 Rd2 ({The pointe is} 54... Kxe6 55. b7 Rd8 56. Nb4 Rb8 57. Nc6 Rxb7 58. Nd8+
{(Pachman).}) 55. b7 Rb2 56. Bd5 Ke5 57. Bf3 Kd4 58. Nc1 Ke3 59. Bd5 {
Pachman attacked in a grand style.} 1-0

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "4"]
[White "Smyslov, Vassily"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "D35"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. cxd5 exd5 6. Bf4 c6 7. e3 Nbd7 8. h3
Nf8 9. Bd3 Ne6 10. Be5 O-O 11. Qc2 $5 ({Known is} 11. O-O) 11... g6 12. O-O-O
$5 {White plans a pawn storm on the kingside.} Ng7 $6 {
Black makes a strategic error, because he starts a passive defence.} ({
Better is} 12... c5 $1 13. dxc5 Nxc5 14. Nd4 Nxd3+ 15. Qxd3 Be6 16. Kb1 Nd7 17.
Bf4 Nc5 18. Qd2 Rc8 {with mutual chances.}) 13. g4 $1 Nfe8 $6 14. Rdg1 f5 $5
15. g5 Bd6 $6 16. h4 Nh5 17. Ne2 Neg7 18. Nf4 $5 Bxe5 $6 (18... Nxf4 $1 19.
exf4 Bxe5 20. fxe5 {(Smyslov)} Qe7 {lessens the offensive by exchanges.}) 19.
Nxh5 $1 Nxh5 20. Nxe5 Qa5 21. a3 Be6 $6 22. Be2 c5 $1 23. dxc5 Rac8 $6 24. Nd3
f4 $1 {Black counters too late.} 25. Qd2 $6 (25. Bxh5 gxh5 26. g6 $1 {
attacks the hostile king.}) 25... Qxd2+ $6 (25... Qb5 $1 26. Qb4 Qc4+ 27. Kd2
Qe4 {begins a counteraction.}) 26. Kxd2 fxe3+ 27. fxe3 $1 {
White has an extra pawn.} Ng7 28. b4 Bf5 29. Rf1 Rfe8 30. Nf2 b6 31. Ng4 $1 Kh8
32. Nf6 Re5 33. Rc1 bxc5 34. Rxc5 Rxc5 35. bxc5 Ne6 36. c6 d4 37. e4 $1 Bxe4
38. Nxe4 Rxe4 39. Rb1 Re3 40. Rb8+ Kg7 41. Bc4 $1 {Smyslov compensated a loss.}
1-0

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "4"]
[White "Szabo, Laszlo"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]
[ECO "D02"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. Nf3 c5 3. g3 Nf6 4. Bg2 Nbd7 5. O-O g6 $5 ({Theory is} 5... e6) 6.
c4 $1 dxc4 7. dxc5 Qc7 8. Qa4 Qxc5 9. Be3 Qh5 $2 (9... Qc6 10. Qxc6 bxc6 {
accepts a slight disadvantage.}) 10. h3 a6 11. Nc3 $1 {White threatens g4.} Nd5
12. Bd4 $6 (12. Bg5 $1 Nxc3 13. Qxc4 Nf6 14. Qxc3 {wins immediately.}) 12...
Nxc3 13. Bxc3 f6 ({Not} 13... b5 $2 14. Qa5 f6 15. Nd4 {(Becker).}) 14. Qxc4
Qc5 15. Qb3 Qb6 16. Qa4 e5 17. Rad1 $1 Qb5 18. Qe4 $5 Be7 19. a4 $1 Nc5 $1 20.
Qxe5 $1 Qxa4 $2 ({Better is} 20... Nxa4 21. Qxb5+ axb5 {(Becker).}) 21. Qe3 $1
Ne6 ({Or} 21... Qe4 22. Qh6 {(Becker).}) 22. Nd4 Nd8 23. g4 Qc4 24. Nf5 $1 {
The temporary sacrifice decides quickly.} gxf5 25. Bxf6 Be6 26. Bd5 Qc8 (26...
f4 $1 27. Qe5 $1 Bxf6 28. Qxf6 Bxd5 29. Qxh8+ {wins for White.}) 27. Bxh8 fxg4
28. Bxe6 Nxe6 29. hxg4 Qc4 30. Qf3 Nf4 31. e3 Ng6 32. Bc3 Rc8 33. Rd4 Qb5 34.
Rfd1 Rc7 35. Qe4 Qg5 36. Rd8+ Kf7 37. R8d5 Qh6 38. Rh5 {
Szabo chased a vulnerable queen.} 1-0

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "5"]
[White "Eliskases, Erich"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "E66"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c5 7. d4 Nc6 8. d5
Na5 9. Nd2 a6 10. Qc2 e5 11. b3 {They play a fashionable opening.} Ne8 $5 12.
e4 f5 13. exf5 gxf5 (13... Bxf5 $1 {develops a piece.}) 14. Bb2 Rb8 15. Ne2 b5
16. Bc3 Nb7 17. f4 $1 Qe7 18. Rfe1 e4 19. Nf1 b4 20. Bxg7 Qxg7 21. Ne3 Nf6 22.
Kh1 $6 h5 {Black has prevented an advance on the kingside.} 23. Ng1 $5 {
Eliskases makes passive moves.} Nd8 24. Bf1 $6 Nf7 25. Rad1 $6 {
Hereafter, a beleaguerment begins.} ({Eliskases prefers} 25. a4 $1 bxa3 26.
Rxa3 {and Black cannot break through.}) 25... Bd7 26. Rd2 Ra8 27. h4 Ng4 28.
Nh3 a5 29. Nf2 Nfh6 30. Nfxg4 Nxg4 31. Nxg4 Qxg4 {
Black has the initiative on the flanks.} 32. Kh2 a4 33. Be2 Qg6 34. Rb1 Kh7 35.
Qd1 Rg8 36. Qg1 axb3 37. axb3 Ra3 38. Qe3 Kh6 39. Kg2 Qf6 40. Kf2 Rga8 41. Rc1
Be8 $5 42. Rb1 $6 (42. Bd1 $1 {prevents a capture on b3.}) 42... Kg7 43. Rc1
Kf8 $5 (43... Ba4 $1 44. Bd1 Bxb3 $1 45. Bxb3 Rxb3 46. Qxb3 Ra3 47. Qb2 e3+ {
wins quickly.}) 44. Rb1 Ke7 45. Rc1 Kd8 46. Rb1 Kc7 47. Rc1 Kb6 $1 48. Rb1 Ra1
$1 49. Rxa1 Rxa1 {Pawn a3 will fall soon.} 50. Rd1 Ra2 51. Rd2 Ra3 $1 52. Bd1
Ba4 $1 53. Bc2 Qc3 ({Or} 53... Bxb3 54. Bxb3 Qc3 55. Qxc3 bxc3) 54. Qxc3 bxc3
55. Rd1 Ra2 $1 56. bxa4 Rxc2+ 57. Ke3 Rg2 $1 {Szabo prevailed on the flanks.}
0-1

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "7"]
[White "Eliskases, Erich"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "A20"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nf3 Nc6 3. d4 e4 4. d5 $5 (4. Nfd2 $5 {
occurred in Eliskases - Vinuesa, Mar del Plata 1941.}) 4... exf3 5. dxc6 fxg2
6. cxd7+ Qxd7 $1 7. Qxd7+ Bxd7 8. Bxg2 O-O-O {
Polugaevsky does want a draw, despite the exchanges.} 9. O-O Nf6 10. Nc3 Be6
11. b3 $6 ({Better is the courageous} 11. Be3 $1 Bxc4 $5 12. Bxa7 $1 b6 13.
Rfc1 $1 {and the imprisoned bishop will be liberated.}) 11... Bb4 12. Na4 Rhe8
13. Be3 b6 14. Rfd1 Bd7 $5 15. Bf3 $2 ({Preferable is} 15. c5 $1 b5 $6 16. a3
$1 Ba5 17. b4 bxa4 18. bxa5 {(Becker).}) 15... Ne4 16. a3 Bf8 17. Nb2 f5 18.
Nd3 g5 $1 19. Bd4 $2 {The queen's bishop lacks protection.} (19. Bc1 Bg7 20.
Rb1 f4 21. Bb2 Bxb2 22. Rxb2 {defends properly.}) 19... Ba4 $1 20. Nc1 g4 $1
21. Bxe4 Rxe4 22. e3 c5 $1 23. bxa4 cxd4 24. exd4 Rexd4 25. Rxd4 Rxd4 {
The white pawn structure has been ruined.} 26. Nb3 Rxc4 {
Black conquers the weak pawns.} 27. a5 bxa5 28. Nxa5 Rc3 29. Re1 Bxa3 30. Re8+
Kc7 31. Rh8 Bb4 32. Rxh7+ Kb6 33. Rb7+ (33. Nb7 Rc7 34. Rxc7 Kxc7 {
also leads to the loss of the knight.}) 33... Kxa5 34. Rxa7+ Kb6 35. Rf7 Rf3
36. Kg2 Bc5 37. h3 Rxf2+ 38. Kg3 gxh3 39. Kxh3 Bd6 {
Polu led by 6/7, half-a-point before Szabo.} 0-1

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "8"]
[White "Parma, Bruno"]
[Black "Bielicki, Carlos"]
[Result "1-0"]
[ECO "B88"]
[Annotator "JvR"]
[PlyCount "39"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

{The Yugoslav player Parma had become world champion of the youth during the
previous year.} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6
7. Bb3 Be7 8. Be3 O-O 9. O-O Na5 10. f4 b6 11. e5 Ne8 12. f5 dxe5 13. fxe6 f6
$2 {Bielicki makes a known error in a sharp variation.} (13... exd4 $6 14.
exf7+ Kh8 15. fxe8=Q Qxe8 16. Bxd4 {
happened in Romanovsky - Shamkovich, Kharkov 1956.}) (13... Nxb3 $6 14. Nc6 $1
Qd6 15. Qxd6 Bxd6 16. axb3 Bxe6 17. Bxb6 $1 {
will be played in Hennings - Ortega, Berlin 1968.}) ({My preference has} 13...
fxe6 $1 14. Bxe6+ Bxe6 15. Rxf8+ Bxf8 16. Nxe6 Qxd1+ 17. Rxd1 Nf6 {
and Black has almost equalised.}) 14. Nf5 Nxb3 15. Nd5 $1 Bxe6 $5 (15... Nd4
16. Ndxe7+ Kh8 17. Ng6+ hxg6 18. e7 {
won for White in Geller - Vatnikov, Kiev 1950.}) ({The pointe is} 15... Nxa1
16. Ndxe7+ $1 Qxe7 17. Nxe7+) 16. Nfxe7+ Kh8 17. axb3 {
White has gained a piece.} Rf7 18. Qf3 f5 19. Bg5 Nf6 20. Rad1 {
Parma drew all other games.} 1-0

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "8"]
[White "Penrose, Jonathan"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B82"]
[Annotator "JvR"]
[PlyCount "152"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Bd3 e6 8. a4
b6 9. O-O Bb7 10. Qf3 $5 ({Known is} 10. Kh1) 10... Nbd7 11. Kh1 Be7 12. Bd2
Nc5 13. b4 Nxd3 14. cxd3 O-O 15. Rac1 Qd7 16. Qf2 Rfc8 17. h3 b5 $1 18. axb5
axb5 19. e5 $6 ({Not} 19. Ndxb5 $2 Ba6) 19... Nd5 $1 20. f5 Bf8 $1 21. fxe6
fxe6 22. Nxd5 Bxd5 23. Rxc8 Rxc8 24. Nxb5 $1 dxe5 {
Capture of the knight will be punished by mate.} 25. Nc3 Bb7 26. Ne4 h6 $6 (
26... Ba6 {attacks a pawn.}) 27. Be1 $2 {Pawn d3 should be protected.} Qxd3 28.
Nc5 Bxc5 29. bxc5 Rxc5 $6 ({Preferable is} 29... Qxh3+ $1 30. Kg1 Qh5) 30. Kg1
$1 Qe4 31. Qg3 Rc2 32. Bf2 Bd5 33. Re1 Qf4 34. Qe3 Ra2 35. Re2 Ra1+ 36. Be1 Qd4
37. Kh2 Kh7 38. Bc3 Qxe3 39. Rxe3 {White stops the extra pawns.} Ra2 40. Rg3
Re2 41. h4 Kg8 {The black king starts a long journey.} 42. Ba5 Kf7 43. Bb6 Rc2
44. Kh3 Be4 45. Kh2 Bf5 46. Ra3 Rc4 47. Bf2 Kf6 48. Re3 e4 49. Rg3 Bg6 50. Be3
Bh5 51. Kh3 Rc2 52. Bb6 Be2 53. Bd4+ e5 54. Bb6 Ba6 55. Kh2 Bb7 56. Be3 Rc7 57.
Kg1 Ba6 58. Kh2 Bd3 59. Bb6 Rf7 60. Be3 Ke6 61. Rg6+ Kd5 62. Kh3 Be2 63. Kh2
Kc4 64. Rg3 Bd3 65. Bb6 Kb3 66. Re3 $6 ({Better is} 66. Be3 Kc2 67. Bc5 Kd2 68.
Be3+ Ke2 69. Bc5 Rc7 {but Black will win, eventually.}) 66... Rf6 67. Bc5 Rc6
68. Ba7 Ra6 69. Bc5 Kc4 $1 70. Bf8 Kd4 $1 {
The passed pawns are going to advance.} 71. Re1 Rg6 72. Kh3 e3 73. g4 e2 74.
Bb4 Rf6 75. Kg3 Rf1 76. Ba5 Kc4 {Najdorf will force promotion.} 0-1

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "9"]
[White "Letelier Martner, Rene"]
[Black "Sanguineti, Raul"]
[Result "0-1"]
[ECO "B97"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2
Qxb2 {Black captures the poisoned pawn.} 9. Rb1 Qa3 10. f5 $5 ({Usual was} 10.
e5 dxe5 11. fxe5 Nfd7 {(Tal - Tolush, Leningrad 1956).}) 10... Nc6 11. fxe6
fxe6 12. Bc4 $2 ({Theory will become} 12. Nxc6 $5 bxc6 13. e5 $5 dxe5 14. Bxf6
gxf6 15. Ne4 {(Gipslis - Kortschnoj, Leningrad 1963).}) 12... Nxd4 13. Qxd4 Be7
14. Rf1 $5 ({Not} 14. O-O $2 d5 $1 {(threatens..Bc5).}) 14... b5 15. Be2 O-O
16. Rb3 Qc5 $6 ({Better is} 16... Qa5 $1 17. Bd2 Qc7 {
and White has no compensation for the pawn.}) 17. Qxc5 dxc5 18. e5 Nd5 $6 (
18... c4 $1 19. Rb1 Nd5 {is alright.}) 19. Nxd5 $6 (19. Bxe7 Rxf1+ 20. Kxf1
Nxe7 21. a4 $1 {regains the pawn.}) 19... Rxf1+ 20. Bxf1 Bxg5 21. Nb6 Rb8 22.
Nxc8 Rxc8 {Black has an extra pawn in the endgame.} 23. c4 b4 24. g3 a5 25. a4
$6 {Sanguinetti gets a passed pawn.} Rd8 $1 26. Rd3 Rxd3 $5 27. Bxd3 Be3 28.
Ke2 Bd4 29. Bc2 Bxe5 {
He has two extra pawns, but the ending has bishops of a different colour.} 30.
Kf3 Kf7 31. h3 Kf6 $1 32. Bd1 $6 (32. g4 $1 Bc3 33. Kf4 g6 34. h4 h5 35. gxh5
gxh5 36. Bd1 Be1 37. Bxh5 b3 $1 {leads to a triumph of the black pawns.}) 32...
Bd6 $5 33. Bc2 h6 34. h4 Ke5 $5 (34... Bxg3 $1 35. Kxg3 Ke5 {wins more quickly.
}) 35. Ke3 Be7 36. Bd1 Bf6 37. Bc2 g5 38. h5 $5 g4 $1 {
Black threatens to gain pawn g3, eventually.} 39. Bg6 $5 Bg5+ 40. Kd3 Bc1 41.
Bh7 Bb2 42. Bg6 Bc3 43. Ke2 b3 $1 44. Kd1 Kd4 45. Bf7 e5 46. Be6 e4 47. Bxg4
Kxc4 48. Be6+ Kb4 {The passed pawns are going to advance.} 0-1

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "10"]
[White "Penrose, Jonathan"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "B93"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Bd3 g6 8. O-O
Bg7 9. Nf3 Nbd7 10. Qe1 $5 b5 11. a3 ({A novelty becomes} 11. e5 $5 dxe5 12.
fxe5 Ng4 13. e6 fxe6 14. Qh4 {(Penrose - Lee, Hastings 1965).}) 11... Bb7 12.
Bd2 O-O 13. Qh4 a5 14. Rae1 b4 15. axb4 axb4 16. Nd1 $6 ({Preferable is} 16.
Nb5 Qb6+ 17. Be3 Nc5 18. e5) 16... Ra1 $5 17. Nf2 Rxe1 18. Rxe1 Nc5 $1 19. Bxb4
Ncxe4 20. Bxe4 Bxe4 21. Nxe4 Qb6+ 22. Nf2 Qxb4 23. Nd3 Qc4 24. Qf2 Nd5 25. g3
e6 26. Qe2 Ra8 27. c3 Ra2 28. Qe4 Qa6 29. Kh1 h6 30. Nb4 $2 ({Correct is} 30.
Rc1) 30... Nxb4 31. Qxb4 Qd3 $1 32. Qb7 $5 Qc2 $1 33. Qb8+ Kh7 34. Qxd6 Rxb2 {
Polugaevsky has a decisive attack.} 35. Rg1 Qxc3 36. Qd1 Qe3 37. Rf1 Ra2 38.
Qe1 Qd3 39. Qd1 Qe4 40. Kg1 Ra3 41. Kg2 Rd3 42. Re1 Qd5 43. Qe2 Bc3 {
Penrose had a hard time in Mar del Plata.} 0-1

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "11"]
[White "Polugaevsky, Lev"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "E88"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d5 c6 8. Qd2 cxd5
9. cxd5 a6 10. O-O-O b5 11. Kb1 Nbd7 12. Rc1 Nb6 13. g4 Bd7 14. Bd3 Rc8 15.
Nge2 Nc4 16. Bxc4 Rxc4 17. Ng3 {
Many theoretical  moves have been made in the Sämisch Variation.} Qb8 $5 (17...
Qa5 {was played in Polugaevsky - Hort, Moscow 1960.}) 18. h4 Rfc8 19. Nce2 $1
b4 20. Rxc4 Rxc4 21. Nc1 $1 a5 22. h5 $1 {
They advance on the flanks in an equal position.} Be8 $5 23. Bh6 $1 Bh8 $6 24.
Nf5 $1 Qc7 {Capture of the knight leads to mate.} 25. Qg5 $6 (25. Ne3 $1 Rc5
26. Nd3 {achieves a positional advantage.}) 25... a4 $1 26. Ne3 $6 Rxe4 $1 27.
Ne2 $1 ({The pointe is} 27. fxe4 $2 Nxe4 28. Qh4 Nd2+ 29. Ka1 a3) 27... Rxe3
28. Qxe3 Nxd5 29. Rc1 Qb7 30. Qd3 Bg7 $5 31. Bxg7 Kxg7 32. Ng3 $1 Bc6 33. Qd2
a3 34. Ne4 axb2 35. h6+ $5 Kf8 $1 36. Kxb2 Ke7 37. f4 $2 f6 $2 (37... exf4 $1
38. Qd4 {(Panno) can be answered by} Qa6 $1 39. Re1 Qa3+ 40. Kb1 Kd7 {
and Black is better.}) 38. fxe5 dxe5 39. Qf2 Qb5 40. Rc5 $2 (40. Qc5+ Qxc5 41.
Rxc5 Kd7 42. g5 {wins for White.}) 40... Qa6 $2 {
The time control has been reached.} (40... Nf4 $1 41. Rxb5 Nd3+ 42. Kb3 Nxf2
43. Rxe5+ fxe5 44. Nxf2 {gains a pawn.}) 41. Qd2 $6 (41. Rc2 $1 Kf7 42. Qc5 {
attacks.}) 41... Ke6 42. Qc2 Ne7 43. g5 Bxe4 44. Qxe4 Qd6 $5 45. Qg4+ $5 Kf7 $2
(45... f5 $1 46. Qc4+ Kd7 $1 47. Qxb4 e4 {fights for survival.}) 46. Qc4+ $1
Ke8 47. gxf6 Qxf6 48. Qxb4 {White has gained a pawn.} e4+ 49. Qc3 Qf2+ 50. Kb3
$1 Kd7 51. Re5 Qf3 52. Kc2 Nc6 53. Rd5+ Kc7 54. Qxf3 exf3 55. Kd2 Ne7 56. Rg5
Ng8 57. Rxg6 $1 {Polugaevsky had scored more than 9 points and achieved the
title of international grandmaster. He drew the last four games.} 1-0

[Event "Mar del Plata"]
[Site "25"]
[Date "1962.??.??"]
[Round "15"]
[White "Smyslov, Vassily"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "A37"]
[Annotator "JvR"]
[PlyCount "57"]
[EventDate "1962.03.??"]
[SourceDate "1999.07.01"]

1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nc6 5. Nf3 e6 6. b3 $5 Nge7 7. Bb2 O-O 8.
O-O d6 9. e3 e5 10. d3 h6 11. Qd2 Bg4 12. h3 Be6 13. Rad1 Qd7 14. Kh2 d5 $1 15.
cxd5 Nxd5 16. Na4 b6 17. d4 $1 {Both players open the centre.} cxd4 18. exd4
exd4 19. Nxd4 Nxd4 20. Bxd4 Bxd4 $2 (20... Rad8 $1 21. Bxg7 Kxg7 22. Nc3 Nf6 {
almost equalises.}) 21. Qxd4 Rad8 22. Qh4 $1 {White attacks.} Qe7 $5 {
Black gives a pawn.} ({The natural} 22... Kh7 23. Nc3 $1 Qc6 24. Nxd5 Bxd5 25.
Rxd5 $1 Rxd5 26. Qe4 Rfd8 27. Rd1 $1 {leads to a white gain of material.}) 23.
Qxh6 b5 24. Rd4 $1 Qf6 25. Rh4 Qg7 26. Qxg7+ Kxg7 27. Nc5 Nc3 28. Rc1 $1 Nxa2
$2 {Raul has become tired.} (28... g5 $5 29. Nxe6+ fxe6 30. Rg4 Rxf2 31. Rxc3
Rdd2 32. Rxg5+ Kf6 33. h4 Rxg2+ 34. Kh3 {brings a won rook ending for White.})
29. Rc2 {The final standings became: Polugaevsky 111/2/15 ($1500), Smyslov and
Szabo 91/2 ($900), Byrne, Najdorf and Sanguinetti 81/2 ($600), Pachman, Panno
and Parma 8 ($233), Eliskases 7, Pilnik and Rossetto 61/2, Guimard and Penrose
51/2, Bielicki and Letelier Martner 41/2. Five Argentinians got prizes in
pesos.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "1"]
[White "Foguelman, Alberto"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E92"]
[Annotator "JvR"]
[PlyCount "98"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

{The Municipalidad de la Ciudad de Buenos Aires organised an international
tournament from 9 vii until 5 viii 1964. Strong foreigners among the eighteen
participants were Keres, world champion Petrosian, Robert Byrne and Filip.
They played in the theatre 'General San Martin' from 19 until 24 hours. The
700 seats were often taken.} 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6.
Nf3 O-O 7. Be2 e5 8. h3 a6 (8... Nh5 {
occurred in Najdorf - Gentil, Rio de Janeiro 1957.}) 9. Be3 Nh5 10. Qd2 Nf4 11.
Bf1 (11. Bxf4 exf4 12. Qxf4 f5 $1 {gains positional compensation for a pawn.})
11... b5 $5 (11... Qa5 {drew in Foguelman - Stein, Amsterdam 1964.}) 12. cxb5
axb5 13. g3 $5 (13. Bxf4 exf4 14. Bxb5 f5 15. exf5 Bxf5 16. O-O {
takes the challenge.}) 13... b4 $1 14. Nd1 $6 {White accepts passivity.} Nh5 $1
15. Bh6 f5 $1 16. Bxg7 Kxg7 17. exf5 Rxf5 18. Nh4 $6 ({Preferable is} 18. Be2
e4 19. Nh4) 18... Rf7 $1 19. Ne3 Nd7 20. Ng4 Ndf6 21. Qh6+ Kg8 22. Qg5 $1 Kh8
$6 (22... Bxg4 $1 23. hxg4 b3 $1 24. gxh5 Qa5+ 25. Qd2 Qxa2 $1 26. Rc1 Ne4 {
attacks.}) 23. Bd3 e4 $1 24. Be2 $6 ({Better is} 24. Bc2) 24... Bb7 25. Qh6 $6
Qg8 26. Ne3 Qg7 27. Qg5 $6 (27. Qxg7+ Nxg7 28. Nc4 Bxd5 29. Nxd6 Rfa7 30. a3 {
offers more resistance.}) 27... Re7 28. Nc4 e3 $1 29. Nxd6 exf2+ 30. Kxf2 Rxe2+
$1 31. Kxe2 Qe7+ 32. Kf2 Qxd6 33. Rhe1 Rf8 34. Kg1 Nxd5 35. Qe5+ Qxe5 36. Rxe5
Nxg3 37. Rc1 Nf4 $1 38. Rce1 c4 39. Kh2 Ngh5 40. Re8 Kg8 41. Rxf8+ Kxf8 42. Rf1
Ke7 43. Nf3 Nd3 44. b3 c3 45. Nd4 Ng7 46. Nc2 Nf5 47. Rd1 Be4 48. Kg1 Kf6 49.
Kh2 Nb2 {Najdorf carried out a creative game.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "2"]
[White "Najdorf, Miguel"]
[Black "Byrne, Robert"]
[Result "0-1"]
[ECO "E93"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 Nbd7 8. Bg5
h6 9. Bh4 g5 10. Bg3 Nh5 11. Nd2 Nf4 12. Bf1 $5 ({Usual is} 12. O-O) 12... Nc5
13. Qc2 f5 14. f3 ({Spassky will play} 14. O-O-O $5 {
against Gligoric in Beverwijk 1967.}) 14... c6 15. Bf2 fxe4 16. fxe4 $2 ({
Correct is} 16. Ndxe4 Nxe4 17. Nxe4) 16... cxd5 $2 {
Black misses a surprising decision.} (16... Ncd3+ $1 17. Bxd3 Nxg2+ {
wins the game (Keres).}) 17. Bxc5 d4 $1 18. Ba3 dxc3 19. Qxc3 Bg4 $1 20. h3 Bh5
21. g4 Bg6 22. Qb4 $6 ({Preferable is} 22. O-O-O {(Becker).}) 22... Rf7 $1 23.
O-O-O $6 {White will be charged on the queenside.} ({The pointe is} 23. Qxd6 $2
Rd7 24. Qb4 Rd3 $1 25. O-O-O Bxe4 $1) 23... Rd7 $6 (23... Rc8 $1 {
starts to attack.}) 24. Kb1 Rc8 25. Ka1 Kh7 26. Qb3 a6 27. Qe3 $6 b5 $1 {
Black uses force.} 28. cxb5 $6 d5 $1 29. bxa6 $6 dxe4 30. Bb5 $6 {
Actually, Najdorf has no proper defence.} Rd5 $1 31. Be2 Nxe2 32. Qxe2 Rc2 $1
33. a7 Rd3 34. Qe1 Rxa3 $1 35. Nb3 Qe7 $1 36. Na5 Qe6 $1 {
Robert Byrne won in the first four rounds.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "3"]
[White "Eliskases, Erich"]
[Black "Petrosian, Tigran"]
[Result "0-1"]
[ECO "A07"]
[Annotator "JvR"]
[PlyCount "148"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. b3 Bg4 5. Ne5 $5 Bh5 6. Bb2 e6 7. O-O a5 8. d3
a4 9. a3 Bd6 10. Nd2 axb3 11. cxb3 O-O 12. Re1 Nfd7 13. Nxd7 Nxd7 14. Qc2 Bg6
15. e4 Rc8 16. b4 Qb6 17. Qb3 Rfd8 18. Nf3 Bh5 19. Rab1 Bxf3 20. Bxf3 Ra8 21.
Kg2 Qb5 22. Bd1 Be7 23. Bc2 Nb6 24. e5 c5 25. bxc5 Qxb3 26. Bxb3 Bxc5 27. Bd1
Rdc8 28. Re2 g6 29. Rc2 Nd7 30. Rbc1 Rc6 31. d4 Bf8 32. Rxc6 bxc6 33. Rxc6 Bxa3
34. Bxa3 Rxa3 35. Bc2 Kg7 36. h4 h5 {It looks like a dead draw.} 37. Kf1 Nb8
38. Rc8 Nd7 39. Rc6 Ra2 $1 40. Ke1 $5 Nb8 41. Rc3 Na6 42. Kd2 Nb4 43. Kc1 $2 {
The king goes too far in the wrong direction.} ({Better is} 43. Rc8 f5 44. Rc7+
Kh6 45. f4 $1 {drawn.}) 43... Kh6 $1 44. Kb1 g5 $1 45. hxg5+ Kxg5 46. f4+ Kh6
$1 {Black threatens to exchange the pieces.} 47. Bb3 Rd2 48. Ba4 h4 $5 49. gxh4
Rxd4 50. Bb5 Rxf4 51. Kb2 Rxh4 $2 ({Correct is} 51... d4 $1 52. Rc8 Nd5 {
and Black wins (Eliskases).}) 52. Kb3 Rf4 ({The pointe is} 52... d4 $5 53. Rc8
Nd5 54. Rh8+ Kg5 55. Rxh4 Kxh4 56. Kc4) 53. Rg3 Re4 54. Rg2 Rxe5 $5 {
He cannot liberate his knight.} 55. Kxb4 Rg5 56. Rf2 $5 {
The exchange of rooks would have been alright.} Kg7 57. Kc5 d4+ 58. Kc4 Rg4 59.
Be8 f5 $1 60. Bd7 Kf6 61. Re2 e5 62. Rf2 $5 Rg5 63. Kd5 $5 d3 64. Ra2 $2 (64.
Kc4 e4 (64... Rg4+ 65. Kc3 $1) 65. Kd4 $1 {
stops the advance of pawns (Eliskases).}) 64... Rg4 $3 {
A wonderful move decides the game.} 65. Ra6+ Kg5 66. Ba4 $5 ({The pointe is} 
66. Kxe5 Re4+ $1 67. Kd5 d2 68. Ra1 Re1 {(Eliskases).}) 66... d2 67. Bd1 Rg1
68. Ra1 Re1 69. Kc4 e4 70. Kc3 e3 71. Kc2 e2 72. Kxd2 exd1=Q+ 73. Rxd1 Rxd1+
74. Kxd1 Kf4 {The world champion had to work hard.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "3"]
[White "Keres, Paul"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "C83"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. c3 Be7 10. Be3 Qd7 $5 ({Theory is} 10... O-O) 11. Nbd2 Nxd2 12. Qxd2 Na5
13. Bg5 c5 $5 14. Bxe7 Qxe7 15. Rfe1 Rd8 $5 ({Becker suggests} 15... Nxb3 16.
axb3 O-O) 16. Qf4 h6 17. Bc2 Nc6 18. Rad1 g5 $6 {
Castling would still be possible.} 19. Qg3 g4 20. Nd2 c4 $5 ({
The natural move is} 20... h5) 21. b3 Qa3 22. bxc4 bxc4 23. f4 gxf3 24. Nxf3 $5
Kd7 $1 ({The pointes are} 24... Qxc3 $2 25. Ba4 Rc8 26. Qg7 Rf8 27. Nd4) ({and
} 24... Qxa2 25. Qf2 $1 {(Becker).}) 25. Qf2 Kc7 26. Nd4 Rb8 27. Rf1 $1 Nxd4 ({
Not} 27... Nxe5 $2 28. Qg3 Qd6 29. Rde1 Nd7 30. Rxe6 $1 fxe6 31. Nxe6+ Kc6 32.
Ba4+) 28. Qxd4 Rb2 29. Rd2 Rg8 30. Rdf2 Rg7 $2 (30... Kb8 $1 31. Rxf7 Bxf7 32.
Rxf7 Rb7 {defends courageously.}) 31. h3 $5 Qa5 32. Bf5 Rxf2 33. Qa7+ Kc6 34.
Qa8+ Kc7 35. Qa7+ Kc6 36. Qa8+ Kc7 37. Rxf2 Qb6 38. Qf8 $1 Rg5 39. Bxe6 fxe6
40. Kh2 $1 Qc6 $2 ({Better is} 40... Rf5 41. Rxf5 exf5 42. Qf7+ {
but White wins the queen ending (Becker).}) 41. Rf7+ {Keres attacked well.} (
41. Rf7+ Kb6 42. Qb8+ Ka5 43. Qb4# {ends the game quickly.}) 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "5"]
[White "Guimard, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E67"]
[Annotator "JvR"]
[PlyCount "210"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 e5 7. d4 Nbd7 8. h3
c6 9. dxe5 dxe5 10. Be3 Qe7 11. Qb3 Re8 12. Rfd1 Bf8 13. Rac1 Nc5 14. Qa3 a5
15. b3 $5 (15. Ng5 {drew in round one (Guimard - Bielicki).}) 15... Nfd7 16.
Qb2 f5 17. Rc2 Ne6 18. Nd5 $6 {The quiet Guimard has a wild day.} cxd5 19. cxd5
Nd8 $5 ({Even better is} 19... Qd6 $1 20. Rdc1 Ng7) 20. Ng5 e4 $5 21. Qc1 $1 h6
$2 ({Right is} 21... Nf7 $1 22. Ne6 Nf6 23. Nc7 Bd7 {and Black has an edge.})
22. Nxe4 $2 {They miss a 'petite combinaison'.} (22. d6 $1 Qg7 23. Rxc8 Rxc8
24. Qxc8 hxg5 25. Bxg5 Nb6 26. d7 $1 {wins brilliantly.}) 22... fxe4 23. Rxc8
Rxc8 24. Qxc8 Nf6 25. d6 $5 Qd7 26. Qc3 $6 ({Preferable is} 26. Qxd7 Nxd7 27.
h4 $1) 26... Re6 27. Qxa5 Rxd6 28. Rxd6 Qxd6 {
Black has gained a piece for three pawns.} 29. Qb5 $5 Qc6 30. Qa5 Ne6 31. Qd2
g5 32. a4 Bc5 33. Bxc5 Nxc5 34. Qc3 Kg7 35. a5 Qd5 36. b4 Ne6 37. e3 Nf8 38. b5
N8d7 $5 39. a6 $2 {Guimard blunders a pawn.} ({Correct is} 39. Bf1 $1 Ne5 40.
a6) 39... Qxb5 $1 40. a7 Qa6 41. Bxe4 Qxa7 42. Qb4 Nc5 43. Bg2 b6 44. e4 Qa5
45. Qb1 Ne6 46. Qb2 Qc5 47. Qa2 Nf8 48. Qa7+ N8d7 49. Kh2 b5 50. Qb7 Kg6 51. f4
gxf4 52. gxf4 Qc1 $1 53. f5+ Kg5 54. Qxb5 Qf4+ 55. Kg1 Qe3+ $1 56. Kh2 Kh4 57.
Qb4 Qg3+ (57... Ne5 $1 {ends the game.}) 58. Kh1 Qf4 59. Qe1+ Kg5 60. Qb4 Qe3
61. Qe7 Qc1+ 62. Kh2 Qc7+ 63. Kh1 Kh4 64. Qg7 Qc1+ 65. Kh2 Qg5 $5 66. Qxg5+
Kxg5 $6 {Najdorf takes a long road to victory.} 67. Kg3 Nh5+ 68. Kf3 Ne5+ 69.
Ke3 Ng3 70. Kd4 Kf4 71. Kd5 h5 72. f6 h4 $1 73. Bf3 ({Or} 73. Ke6 Nxe4) 73...
Ng6 74. Bg2 Nh5 75. f7 Kg5 $1 76. Bf1 Kf6 77. e5+ Kxf7 78. Bc4 Ke7 79. Ke4 Ng3+
80. Ke3 Nxe5 81. Kf4 Kf6 82. Ba6 Nh5+ 83. Ke4 Nf7 84. Kf3 Kg5 85. Bc8 Nf4 86.
Ke3 Nh6 87. Ke4 Ng8 88. Kf3 Ne7 89. Bg4 Nf5 90. Ke4 Ng3+ 91. Kf3 Ng6 92. Ke3
Ne7 93. Bd7 Nef5+ 94. Kf3 Nh5 95. Kg2 Kf4 96. Kf2 Nf6 97. Bc8 Ne4+ 98. Kg2 Ne3+
99. Kh2 Kf3 100. Bb7 Nf1+ 101. Kg1 Nfd2 102. Bc8 Kg3 103. Bd7 Ng5 104. Bc8
Ndf3+ 105. Kh1 Nd4 {Pawn h4 will queen soon, if Black plays accurately.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "6"]
[White "Byrne, Robert"]
[Black "Wexler, Bernardo"]
[Result "1-0"]
[ECO "E53"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 O-O 6. Bd3 c5 7. O-O d5 8. cxd5
exd5 9. Ne5 Bb7 10. Bd2 Nc6 11. a3 Nxe5 12. dxe5 Bxc3 13. Bxc3 Ne4 14. Bxe4
dxe4 15. Qg4 Qe7 16. Rfd1 Qe6 17. Qg5 $5 (17. Qh4 {
happened in Gligoric - Szabo, Budapest 1960.}) 17... Bd5 18. Rd2 Rad8 19. Rad1
Rd7 20. f4 h6 $2 (20... exf3 21. gxf3 h6 22. Qg3 Rfd8 {equalises.}) 21. Qh5 $1
Rfd8 22. f5 $1 Qe7 23. f6 $1 Qe6 24. fxg7 Qg6 (24... Bc6 $2 25. Rxd7 Rxd7 26.
Rf1 $1 {wins for White.}) 25. Qxg6 fxg6 26. Rf2 Bf7 27. Rdf1 Re8 28. Rf6 Re6
29. Rxe6 Bxe6 30. Rf6 Re7 31. Rxg6 h5 $2 ({Better is} 31... Kh7 $1 32. Rf6 Kxg7
) 32. Rh6 Kxg7 33. Rxh5 a5 34. Kf2 Ra7 35. Rh4 b5 36. Rxe4 b4 37. Be1 Rb7 38.
axb4 axb4 39. Ke2 c4 40. Kd1 c3 41. bxc3 b3 42. Rb4 $1 Ra7 43. c4 Ra1+ 44. Ke2
Bxc4+ 45. Rxc4 b2 46. Rb4 {
Black cannot stop the white pawns. Robert Byrne led by 51/2/6!} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "9"]
[White "Petrosian, Tigran"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]
[ECO "D36"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 c6 8. Qc2
Nbd7 9. Nge2 Re8 10. O-O Nf8 11. Rae1 Nh5 12. Bxe7 Rxe7 $5 13. b4 a6 14. Na4 g6
15. Nc5 Ng7 $5 {Black plays passively.} 16. a4 Bf5 17. b5 axb5 18. axb5 b6 19.
Na6 cxb5 $2 ({The alternative is} 19... Qd6 $1 20. Rb1 c5 $1 21. dxc5 bxc5) 20.
Nb4 $1 Qd6 21. Bxf5 Nxf5 ({Filip suggests} 21... Qxb4 $1) 22. Qb3 Rd7 23. Nc3
Ne7 24. Nxb5 Qf6 25. Ra1 Ra5 26. Nd3 Rd8 27. Rac1 h5 28. Ne5 Qe6 $6 ({
Preferable is} 28... Nd7 29. f4 h4) 29. Rc7 $1 {Petrosian produces a fine game.
} f6 $5 30. Rxe7 $1 Qxe7 31. Nc6 Qd7 32. Nxa5 $1 bxa5 33. Nc3 $1 Qc6 34. Ra1 {
The a-pawn is going to fall.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "10"]
[White "Filip, Miroslav"]
[Black "Guimard, Carlos"]
[Result "0-1"]
[ECO "D37"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Nc6 8. a3
Bxc5 9. Qc2 d4 $5 10. O-O-O $1 Qe7 11. exd4 Nxd4 12. Nxd4 e5 13. Bg5 (13. Nf5
$1 Bxf5 14. Qxf5 exf4 15. Bd3 {
will gain an advantage in Vul - Koptsov, Moscow 2002.}) 13... Bxd4 14. Nd5 Qd6
15. Bxf6 gxf6 16. Bd3 Kg7 17. Ne3 b5 18. cxb5 Be6 19. Nf5+ Bxf5 20. Bxf5 Rab8
21. a4 a6 22. Qb3 Rfd8 $1 23. Kb1 axb5 24. axb5 Ra8 $2 ({Better is} 24... Qc5)
25. Be4 $2 (25. Rd3 $1 {starts a dangerous attack.}) 25... Ra5 26. Bc6 Qc5 27.
Rd3 Qa7 28. Kc2 Ra2 29. Rb1 Qc5+ $5 30. Kd1 $1 Ra7 31. Rc1 $5 Qe7 $6 ({
Better is} 31... Qb6) 32. Ke2 e4 $2 ({More solid is} 32... f5) 33. Rxd4 $1 Rxd4
34. b6 Rd3 35. bxa7 $2 (35. Qb5 $1 Qd6 $5 36. bxa7 Rd2+ 37. Ke1 Qd4 {
(Becker) is refuted by} 38. Qc5 {White wins.}) 35... Rxb3 36. a8=Q Rxb2+ 37.
Kf1 Qd6 38. Qc8 $4 ({Right is} 38. Kg1 $1 Rc2 39. Qa1 $1 Rxc6 40. Rxc6 Qxc6 {
and Black has little winning chances in the queen ending (Becker).}) 38... Qf4
$1 {Filip had a hard time in Buenos Aires.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "13"]
[White "Keres, Paul"]
[Black "Bolbochan, Julio"]
[Result "1-0"]
[ECO "C43"]
[Annotator "JvR"]
[PlyCount "133"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

{Petrosian and Byrne led by half-a-point on Keres and Najdorf, when round
thirteen began.} 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 ({Usual is} 3... Nxe4) 4. e5
Ne4 5. Qe2 Nc5 6. Nxd4 Nc6 7. Nxc6 bxc6 8. Nc3 Rb8 9. a3 $5 (9. f4 {
was played in Fischer - German, Stockholm 1962.}) 9... Be7 10. Be3 d5 11. exd6
cxd6 12. Bxc5 dxc5 13. Qe5 Qd6 ({The alternative is} 13... Rxb2 14. Rd1 Bd7 15.
Ne4 Qa5+ 16. c3 {with great complications.}) 14. Qxg7 Qd4 $5 {
He sacrifices a pawn.} 15. Qxd4 cxd4 {
Black has sufficient compensation for the pawn.} 16. Nd1 $5 Rg8 17. g3 h5 18.
b3 Rg5 $5 ({Preferable is} 18... Bf5 $1 19. Ra2 Be4 20. Rg1 h4) 19. Nb2 $1 Be6
$6 20. Bc4 $1 Ra5 $2 (20... Bg4 {keeps the two bishops.}) 21. Bxe6 fxe6 22. Nc4
Rf5 23. f4 d3 $5 24. O-O-O Rd5 25. Rxd3 $6 (25. Rhe1 $1 dxc2 26. Kxc2 {
gains a big advantage.}) 25... Rxd3 26. cxd3 Rxb3 27. Kc2 Rb5 28. Re1 Kd7 29.
Re5 $5 Bf6 $5 (29... Rxe5 30. Nxe5+ Kd6 31. d4 Kd5 32. a4 $1 {
seems to win for White.}) 30. a4 Rb4 $5 31. Rxh5 Rxa4 32. Rh7+ Kd8 33. Kb3 Ra1
34. Ne5 $5 Bxe5 35. fxe5 c5 $5 36. Kc4 $5 Rc1+ 37. Kb5 Rc3 38. Rxa7 Rxd3 39.
Kxc5 Rd5+ 40. Kc6 Ke8 41. Rh7 {The game is adjourned.} Rxe5 42. Kd6 {
White will have to play accurately in the rook ending.} Re2 43. g4 Kf8 44. g5
Kg8 45. Rh6 $1 Kg7 46. h4 $1 {The connected pawns are on their way.} Re4 47. h5
$1 Rg4 48. Rg6+ Kf7 49. Rf6+ Kg8 50. Rg6+ Kf7 51. Ke5 $1 Rg1 52. Kf4 {
White's king has to protect his pawns.} Rf1+ 53. Kg4 Rg1+ 54. Kf3 $1 Rf1+ 55.
Kg2 Rf5 56. Kh3 $1 (56. Kg3 $2 e5 $1 {draws.}) 56... e5 57. Kg3 $1 {
Mutual zugzwang has been achieved.} e4 58. Kg4 $1 Rf1 59. Ra6 e3 60. g6+ Ke7
61. Ra7+ Ke6 62. g7 Kf6 63. h6 e2 64. g8=N+ $1 {Paul plays elegantly.} Ke6 65.
Re7+ Kd6 66. Rxe2 Rg1+ 67. Kf5 {Keres was proud of this rook ending.} (67. Kf5
Rxg8 68. h7 {wins quickly.}) 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "13"]
[White "Petrosian, Tigran"]
[Black "Byrne, Robert"]
[Result "1-0"]
[ECO "E80"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 a6 6. Be3 c6 7. a4 Qa5 8. Bd3 $5
c5 $5 9. d5 O-O 10. Nge2 {White controls more territory.} e6 11. Bd2 Qd8 12.
dxe6 fxe6 13. O-O Nc6 14. Bg5 Ne5 15. f4 Nf7 16. Bh4 Bd7 17. h3 Bc6 18. Qc2 Qc7
19. Rad1 Rae8 20. Qb1 Nd7 21. Kh1 Kh8 22. Qc1 Bf6 23. Bxf6+ Nxf6 24. b3 Qe7 25.
Qe3 Rg8 26. Ng3 Nd7 27. Be2 Qh4 28. Kh2 Rg7 29. Nb5 $1 Bxb5 30. cxb5 a5 31. Qf2
b6 32. Kh1 Nf6 33. e5 dxe5 34. fxe5 Nd5 35. Bc4 Nxe5 36. Bxd5 exd5 37. Rxd5
Rge7 38. Qf6+ Qxf6 39. Rxf6 c4 $6 (39... Rd7 40. Rxd7 Nxd7 41. Rf7 Ne5 42. Rb7
c4 $1 {keeps the equality.}) 40. bxc4 Nxc4 41. Rc6 {The game is adjourned.} Nb2
$2 {Byrne's sealed move is a mistake.} ({The world champion has analysed} 41...
Re1+ 42. Kh2 Ne3 $1 43. Rd7 Rd1 44. Rxd1 Nxd1 45. Rxb6 Nc3 46. Ra6 Nxa4 47.
Rxa5 Nc3 48. b6 Rb8 49. Rc5 Na4 {and Black draws (Keres).}) 42. Rd4 $1 Re6 43.
Rc2 Re3 44. Kh2 Rb3 $6 (44... Rd3 $1 45. Rh4 $1 Rb3 {offers more resistance.})
45. Ne4 Re7 46. Nd6 Rd3 47. Rxd3 Nxd3 48. Rc6 Nb2 49. Rxb6 Nxa4 50. Rc6 {
The b-pawn marches on. Petrosian took the sole lead.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "15"]
[White "Olivera, Alfredo"]
[Black "Keres, Paul"]
[Result "0-1"]
[ECO "C77"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 d6 6. d4 exd4 7. Bxc6+ bxc6 8.
Nxd4 c5 9. Nde2 Bb7 10. O-O Be7 $5 ({The alternative is} 10... g6 {
(Aronson - Keres, Moscow 1957).}) 11. Ng3 O-O 12. Nf5 Nd7 13. Qg4 Bf6 14. Bd2
Re8 15. Rae1 Ne5 16. Qg3 Kh8 17. Nd5 $1 Bxd5 18. exd5 Qd7 19. Ne3 Ng6 20. Nc4
$6 ({Better is} 20. b3 $1 Re4 21. c4) 20... Qf5 $1 21. Ne3 {
White has lost two tempi.} Qh5 22. b3 $6 ({Correct is} 22. Bc3) 22... Re4 $1 {
Keres attacks.} 23. Qf3 $6 (23. f4 $1 Bh4 24. Qh3 Nxf4 25. Rxf4 Rxf4 26. g3 Qg6
27. Ng2 $1 {fights for survival.}) 23... Qxf3 24. gxf3 Re5 $6 25. Ba5 Nh4 $1
26. f4 $2 (26. Rd1 $1 Rc8 27. Ng4 {defends properly.}) 26... Nf3+ 27. Kh1 Rh5
28. Ng4 Nxe1 29. Nxf6 gxf6 30. Rxe1 Rxd5 31. Bc3 Kg7 32. Rg1+ Kf8 33. Bxf6 Re8
{Keres and Petrosian shared the lead.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 1"]
[Date "1964.??.??"]
[Round "17"]
[White "Eliskases, Erich"]
[Black "Schweber, Samuel"]
[Result "1-0"]
[ECO "D79"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1964.07.??"]
[SourceDate "1999.07.01"]

{Petrosian and Keres quickly drew their mutual game during the last round.} 1.
c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O c6 6. Nc3 d5 7. cxd5 cxd5 8. d4
Ne4 9. e3 Nc6 $5 ({Usual is} 9... Nxc3 10. bxc3 Nc6) 10. Nd2 Nxc3 11. bxc3 Na5
12. Ba3 Bf5 $5 13. Qf3 Bd3 $2 ({The retreat} 13... Be6 $1 {
is alright (Eliskases).}) 14. Rfc1 Nc4 15. Nxc4 Bxc4 16. e4 $1 {
White will win a pawn.} Qd7 17. exd5 b6 $6 ({Preferable is} 17... Rfe8 18. d6
exd6 19. Qxb7 Qxb7 20. Bxb7 Rab8) 18. Re1 $1 Rfe8 $2 {
Black leaves rook a8 insufficiently protected.} (18... Rae8 $1 19. Qf4 f5 20.
d6 e6 $1 {leads to a black bastion.}) 19. Rxe7 $1 {
Eliskases shows his great strength.} Rxe7 20. Bxe7 Re8 ({The pointe is} 20...
Qxe7 21. d6 $1 Qxd6 22. Qxa8+ {(Becker).}) 21. d6 Bf8 22. Qc6 Bb5 23. Qxd7 Bxd7
24. Bxf8 Kxf8 25. c4 $1 Re2 26. Rc1 $1 {He wins elegantly.} Rxa2 27. c5 bxc5
28. dxc5 Rd2 29. c6 Rxd6 30. cxd7 Rxd7 31. Ra1 {The rest is elementary.} Kg7
32. h4 h6 33. Bf3 Rc7 34. Ra5 Kf6 35. Kg2 h5 36. Be4 Kg7 37. Kf3 Kf6 38. Kf4
Re7 39. Rb5 Kg7 40. Rb7 Rxb7 41. Bxb7 f6 42. Ba6 Kf7 43. Ke4 Ke6 44. Bc4+ Ke7
45. Kd5 a5 46. Bb5 {The final standings became: Petrosian and Keres 121/2/17,
Robert Byrne 111/2, Najdorf 11, Eliskases and Guimard 10, Julio Bolbochan 91/2,
Filip, Garcia and Pilnik 9, Rossetto 8, Rubinetti, Schweber and Wexler 7,
Bielicki and Foguelman 6, Letelier Martner 51/2, Olivera 21/2.} 1-0

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "1"]
[White "Bolbochan, Julio"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D60"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

{Preparations for the international tournament Mar del Plata 1963 were started,
but the event did not occur, because the sponsorship by the casinos and
lotteries stopped. It could be resumed in 1965, when the government took over
the financial support. Thereafter, the closed international tourney became
irregular. Sometimes a Latin-American event took place. An open tournament
began in 1967 and it continued annually until the present.   Twelve rounds of
the twenty-sixth Mar del Plata event were played at Hotel Nogaro. The
remaining three rounds happened at the Jockey Club in La Plata. The event
lasted from 19 iii until 8 iv 1965. Special guests were Stein, Averbakh, Pal
Benko and Gheorghiu.} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 h6 6. Bh4
c6 7. e3 Nbd7 8. Bd3 O-O 9. O-O Ne8 10. Bg3 Bd6 $5 ({Known is} 10... f5 {
(O'Hanlon - Barry, Dublin 1913).}) 11. e4 Bxg3 12. hxg3 dxe4 13. Bxe4 Nef6 14.
Bc2 c5 $6 ({More solid is} 14... b6 15. Qe2 Bb7) 15. dxc5 Nxc5 16. b4 $1 Ncd7
17. c5 a6 18. Qd6 Nb8 $1 19. Qf4 Nc6 20. Rad1 Qe7 21. Rfe1 a5 22. a3 axb4 23.
axb4 Ra3 24. Ne4 $6 (24. Nb5 Ra2 25. Bb3 {keeps an edge.}) 24... Nd5 $1 25. Qc1
Ncxb4 $1 26. Bb1 $5 Ra8 $5 27. Ne5 Nc6 $6 (27... Qc7 $1 28. Nc3 Ra5 {
gains a plus.}) 28. Nd6 Nxe5 29. Rxe5 Qf6 30. f4 g6 31. Be4 Ne7 $2 {
The tables turn.} (31... Bd7 $1 32. Bxd5 exd5 33. Rexd5 Bc6 {equalises.}) 32.
Nxb7 Rb8 33. Nd6 Rb3 34. Bf3 Nf5 35. Nxf5 gxf5 36. c6 Qe7 37. c7 Qb4 38. Qc5
Qxc5+ 39. Rxc5 Kg7 $2 (39... Ra3 $1 40. Rd8 Ra7 $1 {offers more resistance.})
40. Rd8 Rb2 41. Rc1 {White threatens Rcd1!} e5 42. fxe5 {
Bolbochan wins material soon.} 1-0

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "2"]
[White "Najdorf, Miguel"]
[Black "Gheorghiu, Florin"]
[Result "1-0"]
[ECO "D27"]
[Annotator "JvR"]
[PlyCount "43"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 d5 5. Nc3 dxc4 6. Bxc4 a6 7. a4 Nc6 8. O-O
cxd4 9. exd4 Be7 10. Re1 O-O 11. Bg5 Bd7 12. Qe2 Rc8 $5 13. Rad1 Nd5 $6 (13...
h6 $1 14. Bxf6 Bxf6 15. d5 exd5 16. Nxd5 Re8 {equalises.}) 14. Bxd5 $1 Bxg5 15.
Be4 $1 Bh6 $5 16. d5 $1 {White starts to charge.} exd5 17. Rxd5 Rc7 $2 ({
The passive} 17... g6 $1 18. Qd1 Nb8 {defends properly.}) 18. Rd6 $1 {
He threatens Nd5.} f5 $6 (18... Bf4 $5 19. Bxh7+ $1 Kh8 20. Rdd1 g6 21. Nd5 Bh6
22. Ne5 Bf5 {(Najdorf)} 23. g4 $1 {brings a white attack.}) 19. Bc2 $1 Kh8 20.
Nd5 Rc8 21. Qd1 $1 g6 22. Ne7 $1 {
The 55-years-old Najdorf played like a youngster.} (22. Ne7 Nxe7 23. Rxd7 Qe8
24. Rexe7 {wins everything.}) 1-0

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "3"]
[White "Pilnik, Herman"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "C95"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Nb8 10. d4 Nbd7 11. c4 c6 12. c5 Qc7 13. cxd6 Bxd6 14. Bg5 exd4 15.
Bxf6 gxf6 16. Nxd4 Nc5 17. Nf5 Bxf5 18. exf5 Rad8 {
A fashionable line brings mutual chances.} 19. Qg4+ $5 (19. Qh5 {
occurred in Gligoric - Petrosian, Los Angeles 1963.}) 19... Kh8 20. Qh4 Be5 21.
Nc3 Rfe8 22. Re3 $6 Rg8 $1 23. Rd1 $4 ({Correct is} 23. Rae1 $1 Nd3 24. Rd1
Nxb2 25. Rxd8 Rxd8 26. Ne4 {and great complications arise.}) 23... Nxb3 24.
Rde1 ({The pointe is} 24. axb3 Bxc3 25. Rxd8 Rxd8 26. bxc3 Rd1+ 27. Re1 Rxe1#)
24... Nd4 25. Qe4 b4 26. Ne2 c5 27. Ng3 Qc6 28. Qb1 Bf4 {
Panno has an extra piece and a strong attack.} 0-1

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "4"]
[White "Panno, Oscar"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A14"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

{The positional play by Panno had been hard for Najdorf on several occasions.} 
1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. b3 O-O 7. Bb2 d5 8. e3
Nbd7 9. Nc3 a6 $5 ({Usual will become} 9... c5 {(Najdorf - Bielicki, round 13).
}) 10. d4 Bd6 11. a4 Bb4 12. Na2 Be7 13. Qe2 c5 14. Rfd1 Qc7 15. Rac1 $5 dxc4
16. bxc4 Rac8 17. Nc3 cxd4 18. exd4 Rfe8 $5 {Black has the initiative.} (18...
Qxc4 19. Qxc4 Rxc4 20. Ne5 Rc7 21. Nd5 $1 Nxd5 22. Rxc7 Nxc7 23. Nxd7 Rd8 24.
Nxb6 {almost equalises.}) 19. Nb1 $5 Bb4 20. Qe3 Bc6 21. Qb3 Bf8 22. Nc3 Ba8
23. Ne2 g6 24. Ne1 $6 (24. Nd2 $1 {overprotects c4.}) 24... Bxg2 25. Nxg2 e5 $1
26. Ne3 Bh6 27. dxe5 Nxe5 28. Bxe5 $5 Rxe5 $5 29. f4 $6 (29. Nf4 $1 Bxf4 30.
gxf4 Rc5 31. Rd4 {looks horrible for White, but offers more resistance.}) 29...
Re4 $5 30. Nd4 (30. Nd5 Qc5+ 31. Kf1 Ng4 32. Qxb6 Nxh2+ {also favours Black.})
30... Qc5 31. Qd3 Bg7 32. Kg2 $2 (32. Ndc2 Rce8 33. Qd6 Rxc4 34. Qxc5 Rxc5 {
only costs a pawn.}) 32... Rce8 $1 33. Nec2 Ng4 $1 {Panno has been outplayed!}
34. h3 ({Or} 34. Rd2 Rxd4 $1 35. Nxd4 Re3) 34... Ne3+ 35. Nxe3 Rxe3 36. Qd2
Bxd4 37. Qxd4 Re2+ 38. Kf1 Re1+ 39. Rxe1 ({The pointe is} 39. Kg2 R8e2+ 40. Kf3
Qh5+ 41. g4 Qxh3#) 39... Rxe1+ {Najdorf wins a queen.} 0-1

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "6"]
[White "Stein, Leonid"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B96"]
[Annotator "JvR"]
[PlyCount "58"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qe2
Qc7 9. O-O-O Be7 10. g4 h6 11. Bxf6 Bxf6 $1 (11... gxf6 $6 {
was played in Bratko - Martinovic, Dravograd 1963.}) 12. Bg2 ({
The alternative will become} 12. h4 $5) 12... Nb6 13. h4 Bd7 14. Rh3 $6 {
White wants to capture on h3, if the rooks are exchanged.} ({More natural is} 
14. g5 hxg5 15. hxg5 Rxh1 16. Bxh1) 14... h5 $1 15. f5 ({The pointe is} 15. g5
$2 Bxd4 16. Rxd4 e5) 15... hxg4 16. Qxg4 O-O-O $1 17. fxe6 fxe6 18. e5 $2 (18.
Nxe6 Qc4 19. Rxd6 Rhe8 20. Rxb6 Bxe6 21. Rxe6 Qxe6 22. Qxe6+ Rxe6 23. Nd5 {
leads to chances for both sides (Najdorf).}) 18... Bxe5 19. Ne4 $5 {
Desperation.} Bxd4 $1 20. Nxd6+ Qxd6 21. Rxd4 Qe5 22. Re4 Qf5 $1 23. Rc3+ Bc6
24. Qg3 Qd5 $1 25. b3 Qd6 26. Qxd6 Rxd6 27. Rg4 Kb8 28. Rxg7 Bxg2 29. Rxg2 Rxh4
{Najdorf showed his superiority by scoring ten wins and five draws.} 0-1

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "8"]
[White "Palermo, Vicente"]
[Black "Gheorghiu, Florin"]
[Result "0-1"]
[ECO "A46"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 h6 4. Bh4 Bf5 $5 5. e3 Nbd7 6. Bd3 Bxd3 7. Qxd3 c6
8. Nbd2 g5 9. Bg3 Nh5 10. h4 $5 g4 $1 11. Nh2 Nxg3 12. fxg3 h5 13. O-O e6 14.
Rf2 d5 15. e4 Bh6 16. exd5 cxd5 17. Raf1 O-O $1 18. Rxf7 $6 {
Palermo sacrifices an exchange.} Rxf7 19. Qg6+ Rg7 20. Qxh6 Qe8 21. Re1 Qg6 $5
({The alternative is} 21... Rh7 $1 22. Qg5+ Kh8) 22. Rxe6 Qxh6 23. Rxh6 Re8 $2
({Preferable is} 23... Rh7 $1) 24. Rxh5 Re2 25. Nhf1 Nf6 26. Rf5 $2 (26. Re5 $1
Rxe5 27. dxe5 {gains an advantage.}) 26... Ne4 $2 27. Nxe4 dxe4 $2 28. d5 $2 {
They will miss a beautiful knight move twice.} (28. Ne3 $1 Rf7 29. Rxf7 Kxf7
30. Kf1 Rxe3 31. Kf2 {wins for White.}) 28... Rf7 $2 ({Correct is} 28... Rxc2)
29. Rf4 $2 (29. Rxf7 Kxf7 30. Ne3 $1 {triumphs again.}) 29... Rxf4 30. gxf4 e3
$1 {The white pieces are restricted.} 31. d6 Kf7 32. Nxe3 Rxe3 33. Kf2 Re4 34.
Kg3 Re2 35. Kxg4 Rxg2+ 36. Kf5 Rh2 37. Kg5 Rd2 {
Gheorghiu was the world champion of the youth.} 0-1

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "9"]
[White "Gheorghiu, Florin"]
[Black "Bielicki, Carlos"]
[Result "1-0"]
[ECO "C63"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 Nd4 5. exf5 c6 $5 6. Nxd4 $5 (6. Ba4 {
occurred in Tukmakov - Bojkovic, Soviet Union 1965.}) 6... exd4 7. Qh5+ Ke7 {
They play a wild opening.} 8. O-O $5 (8. Qe2+ Kf7 9. Qh5+ Ke7 {leads to perpetu
al check, but the young Gheorghiu wants to win and sacrifices a piece.}) 8...
dxc3 9. dxc3 d6 $2 (9... Nf6 $1 10. Re1+ Kd6 11. Bf4+ Kc5 12. Be3+ Kd6 $1 13.
Bf4+ {will draw in Marjanovic - Inkiov, Bor 1983.}) 10. Bc4 $2 (10. Re1+ $1 Kd7
{(Shamkovich - Boskovic, New York 1979)} 11. Qf7+ Ne7 12. Bf4 $1 cxb5 13. Rad1
{wins quickly.}) 10... d5 $2 {They miss a hidden escape.} (10... Kd7 $1 11. Re1
Be7 $1 12. Be6+ Kc7 13. Bxg8 Rxg8 14. Qf7 Bd7 $1 15. Rxe7 Qxe7 $1 16. Qxe7 Rae8
17. f6 gxf6 18. Qe3 Rxe3 19. Bxe3 Bf5 {almost equalises.}) 11. Re1+ Kd7 12.
Qf7+ Ne7 13. Bg5 $6 Qe8 $1 14. Qe6+ Kd8 15. Qd6+ Qd7 16. Qe5 Qc7 $5 17. Bd3 $5
Qxe5 18. Rxe5 {White still has an attack for a knight after the exchanges.} h6
$5 19. Bh4 Kd7 20. Rae1 $5 Ng8 $1 21. c4 dxc4 22. Bxc4 b5 $2 23. Bf7 $2 (23.
Bxg8 $1 Rxg8 24. Rd1+ Kc7 25. Re8 {overwhelms the opponent.}) 23... Nf6 24. Bg3
Bb7 $2 (24... Kc7 $1 25. Rxb5+ Bd6 {counters well.}) 25. a4 a6 26. Be6+ Kd8 27.
Rd1+ Nd5 28. c3 $1 Be7 29. b3 $1 {He will regain a piece.} Bf6 30. Re3 $1 bxa4
31. bxa4 Bxc3 32. Rxc3 Rc8 33. Bxc8 {They played an exciting game.} 1-0

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "10"]
[White "Averbakh, Yuri"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "A90"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. d4 Bb4+ 3. Nd2 f5 4. Ngf3 Nf6 5. g3 O-O 6. Bg2 d6 7. O-O Bxd2 8.
Bxd2 Nbd7 $5 (8... Qe7 {drew in Averbakh - Simagin, Moscow 1964.}) 9. Bb4 $5 {
White prepares an advance on the queenside.} Qe7 10. Ba3 Rb8 $5 (10... Ne4 $1 {
occupies the centre and prevents the next move.}) 11. c5 $1 b5 $1 12. cxb6 axb6
13. Ne5 $1 Nxe5 $2 ({Better is} 13... Bb7 $1 14. Nc6 Bxc6 15. Bxc6 Nd5) 14.
dxe5 Ne8 {Pawn d6 has become a weakness.} 15. Bc6 Bd7 16. Rc1 Bxc6 17. Rxc6 Qd7
18. Qc1 Rf7 19. exd6 cxd6 20. Qc3 b5 21. Rc1 Rb7 $6 (21... e5 22. Bb4 Qe6 23.
a3 Rfb7 {activates black pieces.}) 22. Rc8 Re7 23. Bb4 Kf7 24. Qd3 Nc7 $6 {
Black gives up a pawn.} (24... Ra7 25. a3 Qb7 {
tries to survive by a passive defence.}) 25. Qxd6 Nd5 26. Rd8 Qxd6 27. Bxd6
Red7 28. Rf8+ Kg6 29. Be5 b4 30. Rc4 Rb5 31. e4 Nb6 $6 (31... Ne3 $1 32. exf5+
exf5 33. Rc6+ Kh5 34. Bd6 Nc2 {fights for survival.}) 32. Rc6 $5 Rxe5 33. exf5+
Kh5 34. Rxb6 exf5 35. Rxb4 {White has two extra pawns.} Rc5 36. Rxf5+ Rxf5 37.
g4+ {Averbakh won his games quietly.} 1-0

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "10"]
[White "Stein, Leonid"]
[Black "Benko, Pal"]
[Result "1-0"]
[ECO "C66"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. Re1 Be7 6. c3 O-O 7. d4 Bd7 8. a4
Bg4 $6 (8... Re8 {was played in Stein - Korelov, Sverdlovsk 1963.}) 9. Bxc6 $1
bxc6 10. dxe5 Bxf3 11. Qxf3 dxe5 12. Nd2 {White has gained a slight advantage.}
Qc8 13. Qf5 Nd7 $5 {Black postpones the exchange of queens.} 14. Nc4 g6 15. Qg4
h5 16. Qe2 Qa6 17. Be3 c5 18. Qd3 Qe6 19. Red1 Nb6 20. Na5 c4 $1 21. Qe2 c5 22.
Rd2 Rab8 $5 23. Rad1 Rfc8 24. h3 Kg7 25. f3 Rd8 26. Rxd8 Rxd8 27. Rxd8 Bxd8 28.
Nb7 Be7 $1 29. a5 (29. Nxc5 Qc6 30. Qf2 Bxc5 31. Bxc5 Nxa4 {equalises.}) 29...
Qc6 $1 30. axb6 axb6 31. Qxc4 Qxb7 {Black has a fortress.} 32. Qb5 Qc7 33. Kf2
Kf6 34. Ke2 Qd6 35. Qe8 Qd8 $2 ({Correct is} 35... Kg7 {
and Black can defend himself easily.}) 36. Qxd8 Bxd8 37. Kd3 $1 {
The king advances in a favourable bishop ending.} Ke6 38. Kc4 Kd6 39. Kb5 Kc7
40. b4 cxb4 41. cxb4 Kb7 42. g4 hxg4 (42... f6 43. gxh5 gxh5 44. Bh6 Be7 45. f4
$1 {opens the kingside.}) 43. fxg4 g5 44. Bc1 f6 {Stein has a won endgame.} (
44... f6 45. Be3 Bc7 46. Bf2 Bd8 47. h4 gxh4 48. Bxh4 Be7 49. Bf2 Bd8 50. Be3
Bc7 51. g5 fxg5 52. Bxg5 {The bishop enters the position through the flank.}
Bb8 53. Be7 Kc7 54. Bf8 Kb7 55. Kc4 Kc6 56. b5+ $1 Kd7 57. Kd5 {
White wins pawn e5 and the game.}) 1-0

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "13"]
[White "Gheorghiu, Florin"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "E20"]
[Annotator "JvR"]
[PlyCount "42"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bd6 6. e4 c5 7. cxd5 exd5 8. e5 $5
{Gheorghiu attacks two pieces.} (8. Bb5+ Bd7 9. Bxd7+ Nbxd7 10. e5 cxd4 11.
exf6 dxc3 12. fxg7 Rg8 {drew in Antoshin - Simagin, Vilnius 1960.}) (8. Bg5 $1
cxd4 9. Nxd5 {will gain an edge in Averbakh - Osnos, Leningrad 1967.}) 8...
cxd4 9. Qxd4 Qe7 {Black prevents a material loss.} 10. Bf4 $6 ({Preferable is} 
10. f4 $1 Nc6 11. Bb5) 10... Nc6 $1 11. Bb5 O-O 12. Bxc6 Bc5 $1 13. Nxd5 $1
Nxd5 14. Qxd5 Rd8 15. Qe4 $6 ({More solid is} 15. Qc4 bxc6 16. Ne2) 15... bxc6
16. Ne2 (16. Qxc6 $4 Bf5 {brings a positional disaster.}) 16... Ba6 $1 17. Be3
$2 (17. Qc2 $1 Bb6 18. h4 {offers more resistance.}) 17... Rd5 $1 18. f4 Rad8
$1 19. Bxc5 Qxc5 20. b4 Qb6 21. Rf1 Rd2 $1 {
Stein scored well during the final rounds and won the second prize.} 0-1

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "14"]
[White "Averbakh, Yuri"]
[Black "Behrensen, Jorge"]
[Result "1-0"]
[ECO "E50"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nf3 c5 6. Be2 b6 7. O-O Nc6 $5 (7...
Bb7 {drew in Geller - Petrosian, Zürich 1953.}) 8. d5 $5 {
Averbakh starts a fight.} Bxc3 9. dxc6 Ba5 $1 {
This bishop will become a target.} 10. Qc2 d5 $6 ({Preferable is} 10... Qc7 11.
a3 dxc6 12. Rb1 Qe7 13. Qa4 Bd7 {and Black defends well.}) 11. a3 Qd6 12. Rd1
$1 Rd8 $2 ({The artificial} 12... Qxc6 $1 13. cxd5 Qd6 $1 14. dxe6 Qxe6 15. Rb1
Qe7 {prevents the loss of a piece.}) 13. Rb1 $1 Ne4 $5 ({The pointe is} 13...
Qxc6 $2 14. cxd5 exd5 15. b4) 14. b4 $1 {White wins a piece.} cxb4 15. axb4
Bxb4 16. Rxb4 Qxb4 17. Qxe4 $1 Ba6 $5 18. Qh4 f6 $5 19. Qg4 Re8 $2 (19... Qe7
$1 20. Bd2 e5 $1 {offers excellent resistance.}) 20. Nd4 $1 f5 21. Qg3 Bxc4 22.
Bh5 $1 Re7 23. Qe5 g6 24. Bf3 Qc3 25. Bd2 Qb2 26. Qd6 Rae8 27. c7 Ba6 28. Be2
Qa2 ({Or} 28... Bxe2 29. Qxe7 $1) 29. Bxa6 Qxa6 30. Nc6 Rf7 31. Bc3 h5 32. Ne5
Rg7 33. Nd7 Rxd7 34. Qxd7 {Averbakh occupied the third place.} 1-0

[Event "Mar del Plata"]
[Site "26"]
[Date "1965.??.??"]
[Round "15"]
[White "Benko, Pal"]
[Black "Bielicki, Carlos"]
[Result "1-0"]
[ECO "C00"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1965.03.??"]
[SourceDate "1999.07.01"]

1. g3 Nf6 2. Bg2 d5 3. Nf3 e6 4. O-O Be7 5. d3 O-O 6. Nbd2 c5 7. e4 Nc6 8. Re1
b6 9. e5 Nd7 10. c3 Rb8 $5 ({Theory is} 10... Qc7) 11. Nf1 b5 12. h4 c4 $6 ({
More aggression shows} 12... b4 $1 13. c4 Nb6) 13. d4 $1 b4 14. Qc2 Re8 15. Ng5
{Both sides have become active on a flank.} Nf8 16. Ne3 $1 Ba6 17. f4 bxc3 18.
bxc3 h6 19. Nf3 Qa5 $6 20. f5 $1 Ba3 $2 {
Two defenders of square f6 have been removed.} ({Correct is} 20... exf5 $1 21.
Nxf5 Bc8 22. Bh3 Be6 {and Black has a new defence line.}) 21. f6 $1 Nd7 $2 {
Another guardian moves away.} 22. fxg7 $6 (22. Ng4 $1 Bxc1 23. Qxc1 $1 {
wins immediately.}) 22... Kxg7 23. Ng4 Bxc1 24. Qxc1 Rh8 $1 {
Pawn h6 gets a timely protection.} 25. Rf1 Rbg8 26. Nf6 Nxf6 27. exf6+ Kf8 $1 {
The black king has an escape route.} 28. Qf4 Qd8 29. Ne5 Nxe5 30. Qxe5 Ke8 31.
Bh3 Bc8 32. Rab1 $1 {Benko continues the attack on the other side.} Qd7 33. Rb8
Kd8 34. Rfb1 Qc7 35. Kf2 Qxe5 36. dxe5 Kc7 37. Ra8 $1 Bb7 38. Rxa7 Rb8 39. Bg4
{The final standings became: Najdorf 121/2/15, Stein 11, Averbakh 101/2, Pal
Benko, Julio Bolbochan and Panno 91/2, Gheorghiu 9, Sanguinetti 81/2, Rossetto
8, Cruz and Garcia 6, Pilnik 51/2, Palermo 5, Bielicki and Foguelman 31/2,
Behrensen 21/2. Miguel outclassed the Soviets! He got 150,000 pesos, about
4000 DM, for his effort.} 1-0

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "1"]
[White "Smyslov, Vassily"]
[Black "Uhlmann, Wolfgang"]
[Result "1-0"]
[ECO "C19"]
[Annotator "JvR"]
[PlyCount "119"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

{The twenty-seventh tournament in Mar del Plata was played at Hotel Nogado
from 12 until 31 iii 1966. Special guests among the sixteen participants were
Smyslov, Stein, Portisch, Reshevsky and Uhlmann.} 1. e4 e6 2. d4 d5 3. Nc3 Bb4
4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. Nf3 Bd7 8. a4 Qa5 9. Qd2 Nbc6 10. Be2 Rc8
11. dxc5 $5 {Pawn c5 is going to hinder Black.} Ng6 12. O-O O-O (12... Ngxe5 $5
13. Nxe5 Nxe5 {will happen in Harston - Uhlmann, Hastings 1972.}) 13. Qe3 Qc7
14. Nd4 $1 Qxe5 15. Nb5 Qxe3 (15... Qf6 $1 16. Nd6 Rb8 {
will draw in Mestovic - Pietzsch, Sarajevo 1968.}) 16. Bxe3 a6 $5 {
Black gives a tempo.} 17. Nd6 $1 Rc7 18. a5 e5 19. Rfb1 Nd8 20. Rd1 Bc6 21. Bg4
Ne6 22. Rab1 Ne7 23. g3 f5 $1 24. Bh3 g6 25. f4 $1 d4 $6 {
Black sacrifices a pawn in the wrong way.} (25... e4 $1 26. Bf1 Nc8 27. c4 d4
$1 28. Bxd4 Rd7 {counters in a closed position.}) 26. cxd4 Nd5 $1 27. Bf2 exd4
28. Bxd4 Nxd4 29. Rxd4 Re7 30. Kf2 Nc3 31. Re1 Rxe1 32. Kxe1 Ne4 33. Nxe4 Bxe4
34. c3 Rf6 $2 (34... Re8 $1 35. Kf2 Re7 36. Bg2 Bxg2 37. Kxg2 Re2+ {
brings drawing chances in the rook ending.}) 35. Rd8+ Kg7 36. Rd7+ Rf7 37.
Rxf7+ Kxf7 {White has a won bishop ending.} 38. Kd2 $2 {He misses the decision.
} (38. Bf1 $1 Ke7 39. Bc4 Kd7 40. Bg8 h6 41. Bh7 g5 42. fxg5 hxg5 43. g4 $1 {
wins for White.}) 38... Ke6 $1 39. c4 Kd7 40. Ke3 Kc6 $2 {
Probably time was scarce.} (40... Bc6 $1 41. Bf1 Ke6 42. Kd4 Kf6 {
creates a bastion.}) 41. Kd4 $1 Kd7 $5 (41... Bf3 $1 42. Bf1 h6 $5 43. Bd3 h5
44. Bc2 $1 {(White threatens Ba4+)} Kd7 45. Ke5 Ke7 46. c6 $1 Bxc6 (46... bxc6
47. Kd4 $1) 47. c5 Bf3 48. Bb3 Bc6 49. Bd5 Bxd5 50. Kxd5 Kd7 51. h3 {
leads to a won pawn ending.}) 42. Ke5 $1 Bf3 43. Kf6 Kc6 44. Kg7 Kxc5 45. Kxh7
Bh5 46. Bf1 Kb4 47. Bg2 $5 Kxa5 48. Bxb7 Kb6 $1 49. Bc8 $1 a5 50. Bd7 Kc5 51.
h3 $1 Bf3 52. Kxg6 Bc6 53. Bxf5 a4 54. Bb1 a3 55. f5 Be4 56. Ba2 $1 Bd3 57. h4
Kd4 58. h5 Ke4 59. g4 Kf4 60. Kg7 {Smyslov had an excellent start.} 1-0

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "3"]
[White "Uhlmann, Wolfgang"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "E91"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Bg5 Bg4 7. Be2 Nfd7 8. d5
Nb6 $5 (8... Nc5 9. Nd4 Bxe2 10. Ndxe2 {
occurred in Uhlmann - Gligoric, Zagreb 1965.}) 9. Nd2 Bxe2 10. Qxe2 N8d7 11.
O-O c6 12. f4 $5 Rc8 13. Rf3 Qe8 $5 14. Re1 e6 15. Qf1 $5 f6 16. dxe6 $2 (16.
Bh4 $1 Qe7 17. Bf2 {keeps an edge.}) 16... fxg5 $1 17. exd7 Nxd7 18. fxg5 $2 (
18. e5 $1 g4 19. exd6 gxf3 20. Rxe8 Bd4+ 21. Kh1 fxg2+ 22. Kxg2 Rcxe8 {
leads to sharp play.}) 18... Qe5 $1 19. Rd1 $5 ({The alternative is} 19. Rxf8+
Rxf8 20. Nf3 Qc5+ 21. Kh1 Ne5 {and Black has sacrificed a pawn for the attack.}
) 19... Qxg5 20. Rxf8+ Rxf8 21. Nf3 Qf4 (21... Qc5+ $1 22. Kh1 $6 Ne5 $1 {
wins for Black.}) 22. Qe2 Nc5 23. Nd4 a5 24. Nb3 b6 25. Nd4 Rc8 $5 26. Qd2 $5
Qxd2 27. Rxd2 Kf7 28. Kf2 Ke7 29. Ke2 Kd7 30. Nb3 Ne6 {
The Soviets scored well at the cost of Uhlmann.} (30... Ne6 31. Rd1 Nf4+ $1 32.
Kf3 $6 Rf8 $1 {brings an overwhelming positional advantage.}) 0-1

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "4"]
[White "Pilnik, Herman"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "C86"]
[Annotator "JvR"]
[PlyCount "54"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. c3
O-O 9. Qe2 Na5 10. Bc2 c5 11. Rd1 Qc7 12. Nbd2 Re8 13. Nf1 h6 $5 14. Ne3 Bf8
15. Bd2 Be6 16. d4 $5 ({Preferable is} 16. c4 $1) 16... exd4 17. cxd4 Nc4 $1
18. dxc5 $6 ({Better is} 18. b3 Nxd2 19. Qxd2) 18... dxc5 $6 {
Pawn b2 could be captured.} 19. Nxc4 $6 ({This time} 19. b3 Nxd2 20. Rxd2 {
should be played.}) 19... Bxc4 20. Qe1 $2 {White makes a timid move.} (20. Qe3
$1 Bd5 $5 21. e5 Bxf3 22. Qxf3 Qxe5 23. Bc3 {gives counter-play for a pawn.})
20... Bd5 $1 {Black rules in the centre.} 21. Ba5 Qf4 $1 22. Rxd5 $5 (22. Qd2
Qxd2 23. Nxd2 Nxe4 {costs a pawn.}) 22... Nxd5 23. e5 Nb4 24. Be4 Rac8 25. h3
$6 f5 $1 26. Bb1 Nc6 27. Bd2 Nxe5 $1 {Hereafter, Pilnik played an important
role in the tournament, because he defeated Stein and Portisch.} ({
The pointe is} 27... Nxe5 28. Bxf4 Nxf3+ 29. gxf3 Rxe1+) 0-1

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "A84"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 f5 5. Bf4 c6 6. e3 Nf6 7. Be2 O-O 8. O-O
Ne4 9. h3 Nd7 10. Nd2 $5 ({Usual is} 10. Qc2) 10... Bd6 11. Bxd6 Nxd6 12. b4
dxc4 13. Nxc4 Nxc4 14. Bxc4 Nb6 15. Be2 Nd5 16. Qb3 {Black has the bad bishop.}
f4 $5 17. Nxd5 exd5 18. e4 Be6 {The bishop can be activated.} 19. Bf3 Kh8 $5
20. e5 $1 Qd7 21. b5 $5 cxb5 22. Rfb1 Rac8 $2 (22... Rfc8 $1 23. a4 $5 bxa4 24.
Qxa4 Rc6 $1 {defends properly.}) 23. a4 $1 bxa4 $6 24. Qxa4 $1 Qe7 $5 (24...
Qxa4 25. Rxa4 Bd7 26. Rxa7 Bc6 {brings a poor endgame.}) 25. Qxa7 Qg5 26. Kh2 {
Lajos has a  won position.} Bxh3 $5 {He bluffs.} 27. Rxb7 $4 {The tables turn.}
({Correct is} 27. gxh3 Rc2 $1 28. Kh1 Qh4 29. Qa3 $1 Qxh3+ 30. Kg1 {
and White wins.}) 27... Bxg2 $1 28. Bxg2 f3 $4 ({Guimard misses the triumph} 
28... Qh4+ $1 29. Kg1 f3 30. Rxg7 Rg8 $1) 29. Bh3 Rc2 30. Rf1 Qf4+ 31. Kg1 Qg5+
32. Kh2 Qf4+ 33. Kg1 Qh4 $4 (33... Qg5+ {draws by perpetual check.}) 34. Rb8
Rcc8 35. Rxc8 Rxc8 36. Qd7 Rf8 37. Qg4 Qe7 38. Kh2 g5 39. Rc1 Rf4 40. Qc8+ {
Portisch won after a near disaster.} 1-0

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "7"]
[White "Eliskases, Erich"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "A15"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. b3 Bg7 6. Bb2 O-O 7. O-O e6 8. Qc2
$5 d5 9. Ne5 c5 10. f4 $5 Nc6 11. Nxc6 Bxc6 12. Nc3 Rc8 13. Nd1 d4 $5 {
Black takes the initiative.} 14. Nf2 Bxg2 15. Kxg2 Qd7 16. Qd3 Rfe8 17. e4 $2
dxe3 18. Qxd7 Nxd7 19. Bxg7 e2 $1 20. Rfe1 Kxg7 21. Rxe2 {
The d-pawn has become weak.} Nb8 $1 22. d3 Nc6 {
The backward pawn cannot be liberated.} 23. Rae1 Red8 24. Rb2 a5 25. Re3 Rc7
26. Kf1 Rcd7 27. a4 h6 28. h4 Nd4 29. Ke1 Re7 30. Kd2 Nf5 31. Rf3 e5 $1 32.
fxe5 Rxe5 33. Ng4 Re6 34. Ne3 Nxe3 $6 ({Better is} 34... Nd4 $1 35. Rf2 f5) 35.
Rxe3 Rxe3 36. Kxe3 f5 37. Rf2 Kf6 38. g4 $2 {
He should play passively in the rook ending.} Rd4 $1 39. gxf5 gxf5 {
Black has a passed pawn.} 40. Rf4 $6 Rxf4 41. Kxf4 Ke6 {
White suffers from zugzwang in the pawn ending.} 42. h5 Kf6 43. Ke3 Kg5 44. d4
f4+ 45. Kd3 cxd4 46. b4 axb4 47. c5 bxc5 48. a5 c4+ 49. Kxd4 c3 50. a6 c2 51.
a7 c1=Q 52. a8=Q Qc3+ $1 53. Ke4 Qe3+ {
Eliskases collapsed during the time pressure.} 0-1

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "8"]
[White "Rossetto, Hector"]
[Black "Eliskases, Erich"]
[Result "0-1"]
[ECO "D03"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

{Eliskases played his last international tournament.} 1. d4 d5 2. Nc3 e6 3. Nf3
Nf6 4. Bg5 h6 5. Bxf6 Qxf6 6. e4 Bb4 7. e5 $5 ({Known is} 7. Bd3) 7... Qe7 8.
Qd2 b6 9. a3 Bxc3 10. Qxc3 c5 11. b4 c4 12. Be2 b5 13. O-O Bd7 14. Nd2 a5 15.
Qg3 Qg5 $1 16. Qxg5 ({My preference has} 16. Nf3 $1 Qxg3 17. hxg3) 16... hxg5
17. c3 Ke7 $1 18. Bg4 $5 Nc6 19. Rae1 $6 {The rook should remain on the a-file.
} axb4 20. axb4 Ra2 21. Nf3 f5 $1 {Black takes the initiative on both flanks.}
22. exf6+ gxf6 23. Re3 Kd6 24. Rfe1 Nd8 $1 25. Bh3 Re8 26. g3 (26. Bg4 Rh8 27.
Bh3 Ra3 $1 28. Rc1 Nf7 {also favours Black.}) 26... Nf7 27. Bg2 $6 (27. Bg4 Nh6
28. Bh5 {keeps an active bishop.}) 27... Nh6 $1 28. h4 $2 g4 $1 29. Nh2 e5 $2 (
29... Rea8 $1 30. Rc1 Rb2 31. Ree1 Raa2 32. Rf1 e5 $1 {
utilises the restriction of the white pieces.}) 30. dxe5+ Rxe5 $5 31. Rxe5 $5
fxe5 32. Rd1 Be6 33. Nf1 Ng8 34. h5 $1 Nf6 35. h6 e4 $5 ({Not} 35... Rc2 $4 36.
Bxd5 $1 Bxd5 37. Rxd5+ $1 Nxd5 38. h7) 36. Ne3 Ke5 37. Bf1 $5 Ra3 38. Be2 $4 ({
Correct is} 38. Rc1) 38... Rxc3 39. Bxg4 Rxe3 $1 40. Bxe6 Rd3 $1 41. Bg4 Rxd1+
42. Bxd1 Kf5 43. f3 Kg6 44. Kf2 d4 45. fxe4 Nxe4+ 46. Kf3 Nc3 47. Bc2+ d3 48.
Bxd3+ cxd3 {If Eliskases had remained in Gross Deutschland, he might have
played a title match against Alekhine in 1941. He performed in South American
tournaments instead.} ({The pointe is} 48... cxd3 49. Ke3 d2 50. Kxd2 Nd5 {
and Black conquers b4 and h6.}) 0-1

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "9"]
[White "Uhlmann, Wolfgang"]
[Black "Garcia, Raimundo"]
[Result "1-0"]
[ECO "A61"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 g6 6. Bg5 Bg7 7. Nf3 d6 8. Nd2
h6 9. Bh4 g5 10. Bg3 Nh5 11. Qa4+ Kf8 12. e3 Nxg3 13. hxg3 Nd7 14. Qc2 Ne5 $5
15. Be2 a6 16. a4 Bd7 (16... h5 $5 17. a5 g4 {
will be played in Uhlmann - Espig, Raach 1969.}) 17. a5 Rb8 18. Nd1 $5 Bb5 $5
19. e4 Bxe2 $2 ({More active is} 19... h5 $1 20. Ne3 Bxe2 21. Kxe2 b5 22. axb6
Qxb6) 20. Kxe2 Qd7 $2 (20... h5 $1 21. Ne3 Kg8 22. Ndc4 h4 {gives counter-play.
}) 21. Ne3 $1 Qb5+ 22. Ndc4 Nxc4 23. Nxc4 Bd4 24. g4 Kg7 25. Kf3 $5 Rbd8 26. g3
Qd7 27. Ra3 $1 {White has a positional advantage. He starts a beleaguerment.}
Rhe8 28. Rb3 Qe7 29. Rb6 Rd7 30. Re1 f6 31. Kg2 Red8 32. Qb3 Qf7 33. Qf3 Qe7
34. Qf5 Re8 35. Kf3 Qd8 36. Kg2 Ree7 37. Rd1 Rf7 38. Rd3 Rfe7 39. Qf3 Rf7 40.
Qe2 Rfe7 41. Rf3 Re8 42. Rf5 Qe7 43. f3 $5 Kh7 44. Kf1 Kg7 45. Qh2 Rb8 46. Ke2
Rh8 47. Kd3 Re8 48. Qh1 $1 {
Pawn e4 gets overprotection. So an advance in the central area can be made.}
Rh8 49. f4 $1 Qd8 50. Kc2 $1 {The last preparation is carried out.} Qe7 51. e5
$1 {Long manoeuvres led to victory.} ({The pointe is} 51. e5 gxf4 52. gxf4 fxe5
53. fxe5 Bxe5 54. Nxe5 dxe5 55. Re6 {and White wins.}) 1-0

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "10"]
[White "Garcia, Raimundo"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "B07"]
[Annotator "JvR"]
[PlyCount "130"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 d6 2. d4 Bg4 3. e4 Nf6 4. h3 Bh5 5. Nc3 c6 6. Be2 Nbd7 7. O-O e5 8. dxe5
$5 (8. Re1 {drew in Averbakh - Stein, Yerevan 1965.}) 8... dxe5 9. Nh4 Bg6 10.
Nxg6 hxg6 11. Bf3 Nc5 12. Qxd8+ {The lesser player exchanges.} Kxd8 13. Be3 Kc7
14. Kh2 $5 Ne6 15. g3 $5 Bc5 $1 16. Bxc5 Nxc5 17. Kg2 b5 18. b4 Ne6 19. a4 a5
20. Rab1 $5 bxa4 21. b5 $5 (21. Nxa4 $1 Nd4 22. c3 Nxf3 23. Kxf3 axb4 24. Rxb4
Rxh3 25. Rfb1 {defends actively.}) 21... Nc5 22. bxc6 Kxc6 23. Ra1 Rhd8 24.
Nxa4 Rd2 25. Nxc5 Kxc5 26. Ra2 Rd7 27. Rfa1 Rda7 {Chances are equal.} 28. Rd1
$5 a4 29. Rd3 $6 Nd7 $6 (29... a3 $1 {gains a plus.}) 30. Rxa4 $6 {
The sacrifice is doubtful.} ({Better is} 30. Rd5+ $1 Kb6 31. Bg4) 30... Rxa4
31. Rxd7 R8a7 32. Rd5+ Kb6 33. Rxe5 Rc7 34. Bd1 $2 (34. Be2 $1 Ra5 35. Rxa5
Kxa5 36. Bd3 {draws.}) 34... Rd4 $1 35. Rd5 $2 ({The retreat} 35. Bf3 $1 Rxc2
36. Re7 Rdd2 37. g4 {might draw.}) 35... Rxe4 (35... Rxd5 $1 36. exd5 Rc3 $1 {
wins more quickly.}) 36. Rd6+ Kc5 37. Rd3 Rd4 38. Be2 Rxd3 39. Bxd3 g5 40. Kf3
Kd4 41. Kg4 Rc5 42. h4 gxh4 43. Kxh4 Rc6 44. g4 Ke5 45. Kg3 Rf6 46. Bc4 Rf4 47.
Bd3 Rb4 48. Bf5 Rf4 49. Bd3 g5 50. Bh7 Kd4 51. Bd3 Kc3 52. f3 Kd4 53. Kf2 Rf6
54. Be4 Ra6 55. c3+ Kxc3 56. f4 $5 f6 $5 57. fxg5 fxg5 58. Kg3 Kd4 59. Bf5 Ke3
60. Bc8 Ra1 61. Kg2 Rd1 62. Be6 Kf4 63. Bc8 Rd2+ 64. Kh3 Rd8 65. Be6 Kf3 $1 (
65... Kf3 66. Kh2 Kf2 67. Bf7 Rd3 68. Bg6 Rg3 69. Bf5 Rg2+ 70. Kh3 Kg1 71. Bd3
Rd2 72. Be4 Ra2 73. Kg3 Ra3+ 74. Bf3 Re3 75. Kh3 Rxf3# {
completes the theoretical win.}) 0-1

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "11"]
[White "Smyslov, Vassily"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "A50"]
[Annotator "JvR"]
[PlyCount "57"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nc6 2. d4 e5 3. d5 Nce7 4. Nc3 Nf6 5. g3 Ng6 $5 (5... d6 6. Bg2 g6 7. e4
Bg7 {happened in Pachman - Rossetto, Portoroz 1958.}) 6. Bg2 Bb4 7. Qc2 a5 8.
e4 d6 9. Nge2 O-O 10. O-O Bd7 11. Na4 Qe8 12. Nec3 $1 Qc8 $5 13. Nb5 Bh3 $2 ({
Correct is} 13... c6 $1 14. Nb6 Qd8 15. Nxd7 Qxd7) 14. Bxh3 Qxh3 15. a3 $1 {
Smyslov refutes the 'petite combinaison'.} ({Not} 15. Nxc7 $2 Rac8 16. Nb5 Rxc4
$1 17. Qxc4 Ng4 {and mate in two.}) 15... c6 $5 16. axb4 cxb5 17. Nb6 $1 Ra6
18. bxa5 $1 bxc4 19. f3 Nd7 20. Nxc4 {White has gained a pawn.} Rc8 21. Be3 f5
22. exf5 Ne7 23. Qb3 Nxf5 24. Qxb7 Rxc4 25. Qxd7 h5 26. Rac1 Rxc1 27. Rxc1 Kh7
28. b4 Ra8 29. Bf2 {Smyslov, Stein and Portisch competed at the top.} 1-0

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "13"]
[White "Bolbochan, Julio"]
[Black "Guimard, Carlos"]
[Result "1-0"]
[ECO "E18"]
[Annotator "JvR"]
[PlyCount "95"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. d4 e6 2. Nf3 Nf6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d5 8. cxd5
exd5 9. Ne5 c6 10. e4 $5 dxe4 11. Nxe4 Nd5 12. Nc3 Bf6 $5 13. Qb3 $5 Nxc3 14.
bxc3 Bxe5 15. dxe5 Re8 16. Bf4 {White has an edge.} Qc8 17. Rad1 Na6 $6 (17...
c5 $1 18. Bxb7 Qxb7 19. Rd6 Nd7 {equalises.}) 18. Rd6 Nc5 19. Qc2 Ne6 20. Be3
c5 21. f4 Nf8 22. Rfd1 Qc7 23. c4 Bxg2 24. Qxg2 $1 Rad8 25. R6d5 Rc8 $5 26. Qe4
f6 27. Qf5 Qf7 28. exf6 Qxf6 29. Qxf6 gxf6 30. Kf2 Re4 $1 {
Black starts a counteraction in the endgame.} 31. Rc1 Rce8 32. Rc3 Ne6 33. Kf3
Nc7 34. Rd7 R4e7 35. Rcd3 Ne6 $2 (35... f5 $1 36. a4 Kf7 37. a5 Rxd7 38. Rxd7+
Re7 {defends well.}) 36. Rxe7 Rxe7 37. f5 $1 Nf8 38. Rd8 Kg7 ({Or} 38... Kf7
39. Bh6 $1 Re8 40. Rxe8 Kxe8 41. Bxf8 Kxf8 42. Ke4 Ke7 43. Kd5 Kd7 44. g4 {
and White wins the pawn ending.}) 39. Bf4 $1 {He threatens Bd6.} Rd7 40. Rxd7+
Nxd7 41. g4 $1 Kf7 42. Ke4 $1 {Black cannot stop the white king.} Ke8 43. Kd5
Ke7 44. h4 Kf7 45. a4 Ke7 46. Bd6+ Kf7 47. Kc6 Ke8 48. g5 $1 {Julio Bolbochan
could compete with the foreigners by defeating other Argentinians.} 1-0

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "14"]
[White "Guimard, Carlos"]
[Black "Reshevsky, Samuel"]
[Result "0-1"]
[ECO "A48"]
[Annotator "JvR"]
[PlyCount "130"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 c5 5. e3 cxd4 6. exd4 Nc6 7. c3 O-O 8.
Be2 d6 9. O-O h6 10. Bh4 Qc7 $5 11. Re1 Re8 12. Nc4 Nd5 13. Bg3 b6 14. Nfd2 b5
$5 15. Bf3 $1 Nf6 16. Ne3 Bb7 17. h4 $5 e5 $1 18. dxe5 Nxe5 19. Bxb7 Qxb7 20.
Nb3 $6 ({Preferable is} 20. Qb3) 20... Nc4 $1 21. Nxc4 bxc4 22. Nd2 Qxb2 $6 (
22... Rxe1+ 23. Qxe1 d5 $1 {gains a positional plus.}) 23. Nxc4 Qxc3 24. Nxd6
$6 (24. Rxe8+ Nxe8 25. Rc1 {almost equalises.}) 24... Rxe1+ 25. Qxe1 Ne4 $1 26.
Qxc3 Bxc3 27. Rc1 $2 (27. Rf1 $1 Nxg3 28. fxg3 {avoids the loss of a pawn.})
27... Nxg3 28. fxg3 Be5 29. Ne4 f5 30. Nd2 Bxg3 31. Rc6 Kg7 32. h5 gxh5 33. Ra6
Be5 34. Nf3 Bc7 35. Rc6 Bb6+ 36. Kh2 Re8 37. Nh4 Re5 38. Kg3 Be3 39. Rc7+ Kf6
40. Kf3 Bg5 41. Kg3 f4+ 42. Kh3 Re1 43. Rc6+ Kf7 44. g3 fxg3 45. Kxg3 Re3+ 46.
Nf3 Ra3 47. Rc2 Ke6 48. Kg2 Kd5 49. Rb2 h4 50. Re2 a5 51. Re5+ Kd6 52. Re2 a4
53. Nd4 h3+ 54. Kf2 Rd3 55. Nf3 Ra3 56. Nd4 Kc5 57. Ne6+ Kc4 58. Rc2+ Rc3 59.
Rxc3+ Kxc3 60. Kg3 Kb2 61. Kxh3 Kxa2 62. Nd4 Bf6 63. Nb5 Kb3 64. Kg4 Kb4 65.
Nc7 Bb2 {Black has to prevent the exchange of the knight and a-pawn.} 0-1

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "14"]
[White "Portisch, Lajos"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "A55"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 d6 3. d4 Nbd7 4. Nf3 e5 5. e4 c6 6. Be2 Be7 7. O-O O-O 8. Re1
a6 9. Bf1 Rb8 $5 ({Theory is} 9... b5) 10. b3 b5 11. Bb2 Bb7 12. a3 Re8 13. Rc1
Bf8 14. cxb5 cxb5 15. d5 g6 16. Nd2 Bh6 17. Rc2 Rc8 18. Bc1 Rc7 19. b4 Nb6 20.
Nb3 Bxc1 21. Rxc1 Qc8 22. Qd2 Nc4 $5 23. Bxc4 Rxc4 24. Na5 Rc7 25. f3 Qb8 26.
Qe3 Rec8 27. Ne2 Nd7 28. Rf1 Kg7 29. f4 $5 Rxc1 30. Nxc1 Ba8 31. fxe5 Nxe5 32.
h3 Qc7 33. Ne2 Re8 34. Ng3 Qe7 35. Rc1 h5 36. Rc3 h4 37. Ne2 $5 {
Portisch' initiative has not led to anything.} Nd7 $1 {Pilnik counters.} 38.
Qd4+ $2 ({Correct is} 38. Rc7 $1 Qxe4 39. Qxe4 Rxe4 40. Rxd7 Rxe2 41. Rxd6 Rd2
42. Nc6 Bxc6 43. Rxc6 Rxd5 44. Rxa6 {drawn.}) 38... Nf6 $1 {
White is going to lose a pawn.} 39. Qb6 ({Or} 39. Re3 Bxd5) 39... Nd7 {
Black repeats a position before the time control.} 40. Qd4+ Nf6 41. Rf3 $5 Qe5
$1 42. Qxe5 Rxe5 43. Nc3 Nxe4 44. Nc6 Re8 45. Nxe4 Rxe4 {He has won a pawn.}
46. Rc3 f5 47. Kf2 Kf6 48. Rc1 g5 49. Kf3 Re8 50. Ra1 Re4 51. a4 bxa4 52. Rxa4
Bb7 53. Ra5 Rc4 54. Nd8 Rxb4 55. Nxb7 Rxb7 56. Rxa6 Rb3+ 57. Kf2 Ke5 {
The top became: Smyslov 101/2, Stein 91/2, Portisch 9. Lajos was out of the
race for the first place.} 0-1

[Event "Mar del Plata"]
[Site "27"]
[Date "1966.??.??"]
[Round "15"]
[White "Reshevsky, Samuel"]
[Black "Garcia, Raimundo"]
[Result "1-0"]
[ECO "A53"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1966.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 c6 3. d4 d6 4. e4 e5 5. d5 Be7 6. Be2 O-O 7. Nf3 Na6 8. Nd2 $5
Bd7 9. O-O c5 $6 ({More active is} 9... cxd5 $1 10. cxd5 Qc7 11. Nb3 Nc5 12.
Nxc5 dxc5) 10. a3 $1 Ne8 11. Nf3 g6 $6 ({Better is} 11... f5) 12. Bh6 $1 Ng7
13. Ne1 f5 14. f4 Bf6 15. exf5 gxf5 16. fxe5 dxe5 17. Qd2 b6 18. Nd3 Qe7 19.
Nf2 Rae8 20. Rae1 Qf7 21. Kh1 Kh8 22. Bd1 Rg8 $2 (22... Qg6 23. Bc2 Qh5 {
avoids a decision.}) 23. Nce4 $1 {White threatens Nd6.} fxe4 24. Nxe4 Nf5 25.
g4 $1 {He regains the piece.} Bh4 26. gxf5 $1 {A second sacrifice follows.}
Bxe1 $6 ({A pointe is} 26... Bxf5 $5 27. Nd6 Qg6 28. Re2 Qxd6 29. Rxf5 {
and Sammy has a great positional advantage.}) 27. Qxe1 $1 {He intents Bg5.}
Bxf5 28. Ng3 Qg6 29. Qe3 $2 (29. Bh5 $1 Qxh6 30. Bxe8 Rxe8 31. Rxf5 {
brings a winning attack.}) 29... Bg4 $2 ({Black misses the counteraction} 29...
Be4+ $1 30. Qxe4 Qxh6 {and chances for both parties arise.}) 30. Ba4 $1 Re7 31.
Bf8 $1 Rxf8 32. Rxf8+ Kg7 33. Rf1 Nb8 34. d6 {Reshevsky scored well during the
last rounds. The final standings became: Smyslov 11/15, Stein 101/2, Portisch
91/2, Reshevsky 9, Julio Bolbochan and Uhlmann 8, Rossetto and Sanguineti 71/2,
Emma, Pelikan, Pilnik and Schweber 61/2, Eliskases, Garcia and Guimard 6,
Rubinetti 5.} 1-0

[Event "Mar del Plata"]
[Site "28 (zt)"]
[Date "1969.??.??"]
[Round "?"]
[White "Garcia, Raimundo"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "E67"]
[Annotator "JvR"]
[PlyCount "111"]
[EventDate "1969.03.??"]
[SourceDate "1999.07.01"]

{The twenty-eighth tournament in Mar del Plata was a South American zonal
event. Three places for the interzonal tournament were at stake. Nineteen
participants played from 22 iii until 11 iv 1969.} 1. c4 Nf6 2. g3 g6 3. Bg2
Bg7 4. Nf3 O-O 5. O-O d6 6. Nc3 e5 7. d4 Nbd7 8. e3 Re8 9. b3 c6 10. Bb2 e4 11.
Nd2 d5 12. f3 exf3 13. Qxf3 Nb6 14. c5 Bg4 15. Qf2 $5 ({Known is} 15. Qf4)
15... Nc8 16. e4 $1 Be6 17. h3 Ne7 $6 ({Preferable is} 17... dxe4 18. Ncxe4
Nxe4 19. Nxe4 f5 $1) 18. e5 $1 Nd7 19. Nf3 f6 20. Ne2 $5 g5 $5 21. exf6 Bxf6
22. h4 h6 23. hxg5 hxg5 24. Qe3 $5 Nf5 25. Qd2 Ng7 26. Rae1 Bg4 27. Nh2 Bf5 28.
Rf2 Qe7 29. Ref1 Qe6 30. Nf3 Bg4 $6 (30... Qe3 $1 {equalises.}) 31. Nc1 $1 Bxf3
32. Rxf3 g4 33. R3f2 Qe7 34. Re2 Qf7 35. Nd3 Qg6 $2 ({Better is} 35... Nh5 $1
36. Re3 Qg6) 36. Nf4 $1 Qg5 $2 (36... Rxe2 37. Qxe2 Qg5 {defends properly.})
37. Nxd5 $1 {White wins a pawn.} Qg6 ({The pointe is} 37... cxd5 38. Qxg5 Bxg5
39. Bxd5+ Kh7 40. Rh2+ Bh6 41. Bc1 {and White wins.}) 38. Nxf6+ Nxf6 39. d5
Rxe2 40. Qxe2 Nxd5 41. Bxd5+ cxd5 42. Qd1 Ne6 ({Or} 42... Rd8 43. Rf4) 43. Qxd5
Rd8 44. Qe5 Kh7 45. Re1 Re8 46. Qe4 Ng7 47. Qxg6+ Kxg6 48. Rxe8 Nxe8 49. Kf2
Nc7 50. Ke3 Kf5 51. Kd4 Ke6 52. Ke4 Nd5 53. a3 a6 54. b4 b6 55. c6 $1 Kd6 56.
c7 $1 {The Argentinian master Raimundo Garcia carried out a great tournament.}
1-0

[Event "Mar del Plata"]
[Site "28 (zt)"]
[Date "1969.??.??"]
[Round "?"]
[White "Panno, Oscar"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E46"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1969.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Nge2 d5 6. a3 Be7 7. cxd5 Nxd5 8.
Qc2 Nd7 9. Bd2 N5f6 10. Ng3 c5 11. dxc5 Nxc5 12. Be2 b6 13. O-O Bb7 14. Rfd1
Rc8 15. Rac1 Qc7 16. Qb1 Qb8 17. b4 Ncd7 18. Nb5 a6 19. Nd4 Ne5 $5 (19... b5 {
occurred in Reshevsky - Bisguier, New York 1957.}) 20. f3 Bd6 21. Nf1 Rfd8 22.
Rxc8 Qxc8 23. Rc1 Qd7 24. Be1 Nd5 25. Qb2 Be7 26. b5 a5 27. Bf2 Rc8 28. Nd2
Rxc1+ 29. Qxc1 Qd6 30. f4 Nd7 31. Nc4 Qc7 32. Qc2 Bf6 33. g3 Bxd4 34. exd4 N5f6
35. Bd3 g6 {Panno and Najdorf have carried out endless manoeuvres again.} 36.
Ne5 $6 (36. a4 {keeps the equality.}) 36... Qd6 $1 37. Nc6 $2 (37. Qb3 $1 Be4
38. a4 Bxd3 39. Qxd3 {saves the a-pawn.}) 37... Qxa3 38. d5 $6 Nxd5 39. Nd8 $2
{Panno collapses before the time control.} Nb4 $1 40. Qc7 Nxd3 41. Qxb7 Qc1+ $1
{Both contesters lost one game and won most of the other encounters.} 0-1

[Event "Mar del Plata"]
[Site "28 (zt)"]
[Date "1969.??.??"]
[Round "?"]
[White "Rossetto, Hector"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "D01"]
[Annotator "JvR"]
[PlyCount "94"]
[EventDate "1969.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Bf5 4. e3 e6 5. Bd3 Bg6 6. Nf3 Be7 7. Bxg6 $5 (7.
Ne5 {drew in Rossetto - Behrensen, Buenos Aires 1965.}) 7... hxg6 8. Qd3 c6 9.
Bxf6 $5 gxf6 10. O-O-O Qa5 11. Kb1 Nd7 12. e4 O-O-O 13. exd5 cxd5 14. Qb5 $6
Qxb5 15. Nxb5 a6 16. Nc3 g5 {Black has the initiative.} 17. h3 Rh6 18. Rhe1 Nf8
19. Re3 $6 ({Preferable is} 19. Rd2 Ng6 20. Nd1 Nf4 21. Ne3 {
and the white knights are well placed.}) 19... Ng6 20. Ne2 Bd6 21. a4 Kb8 22.
Rb3 Ne7 23. Rbd3 Rg8 $1 {The attack on the flank begins.} 24. Re3 f5 25. Ne1 f4
26. Rb3 g4 $5 27. hxg4 Rxg4 28. Rh3 Rxh3 29. gxh3 {White has a weak pawn.} Rg6
$5 30. Rd3 $2 (30. Nd3 $1 Rh6 31. Ndxf4 Rh4 32. Nd3 Rxh3 33. c3 {
exchanges the weakling.}) 30... Nf5 $1 31. Kc1 f6 32. Kd1 Ne7 $5 33. h4 $1 Rh6
34. Rh3 Nf5 35. Ng2 e5 $1 36. Ke1 Kc7 37. b3 b5 38. axb5 axb5 39. Kf1 Kc6 40.
Rc3+ Kd7 41. Rh3 b4 42. c3 $5 (42. Kg1 Ke7 43. Kf1 Ke6 44. Ke1 Bc7 45. Kd2 Bb6
46. Kd3 $2 f3 $1 {wins for Black.}) 42... bxc3 43. Nxc3 Nxd4 44. Nxd5 Kc6 45.
Nc3 Nxb3 {Black has gained a pawn.} 46. Ne4 Nd4 47. Nxd6 Kxd6 {
Panno won a fine endgame.} 0-1

[Event "Mar del Plata"]
[Site "28 (zt)"]
[Date "1969.??.??"]
[Round "?"]
[White "Rubinetti, Jorge"]
[Black "Mecking, Henrique"]
[Result "1-0"]
[ECO "B09"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1969.03.??"]
[SourceDate "1999.07.01"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3 Nc6 7. Be3 e5 8. fxe5
dxe5 9. d5 Nd4 10. Nxe5 Nxd5 11. Bxd4 Nf4 12. Ne2 $5 (12. Bf1 $6 Ne6 $1 13.
Nxg6 $5 Bxd4 14. Nxf8 Qh4+ {was played in Baretic - Pirc, Cateske Toplice 1965.
}) 12... Nxe2 13. Bxe2 Qh4+ $2 (13... Qe7 $1 14. Nxg6 $5 fxg6 15. Bxg7 Qh4+ 16.
g3 Qxe4 17. Qd4 Re8 {
ended as drawn in Van der Weide - Nijdam, Wijk aan Zee 1973.}) 14. Bf2 $1 Qxe4
15. Nf3 Re8 16. Kf1 Bxb2 {Black has insufficient compensation for the piece.}
17. Rb1 Bg7 18. Bd3 Qe7 19. Qe1 Qd7 20. Qb4 b6 21. h4 c5 22. Qf4 Qg4 $5 23.
Qxg4 Bxg4 24. a4 Rac8 25. Nd2 Rcd8 26. a5 $1 Bh6 27. Nf3 Re6 28. axb6 axb6 29.
Nh2 Bf5 30. Bxf5 gxf5 31. Nf3 Ra8 32. Rg1 Ra4 33. g3 Rae4 34. Rb2 Re2 35. Rg2
Bc1 36. Ra2 Kg7 $2 37. Bd4+ $1 cxd4 38. Rxe2 Be3 39. Ra4 Re4 40. Kg2 Rg4 41.
Rxe3 $1 {Rubinetti scored well.} 1-0

[Event "Mar del Plata"]
[Site "28 (zt)"]
[Date "1969.??.??"]
[Round "?"]
[White "Van Riemsdijk, Herman"]
[Black "Mecking, Henrique"]
[Result "0-1"]
[ECO "B06"]
[Annotator "JvR"]
[PlyCount "38"]
[EventDate "1969.03.??"]
[SourceDate "1999.07.01"]

{Van Riemsdijk was a Dutchman who settled in Brasil.} 1. e4 g6 2. d4 Bg7 3. Nc3
d6 4. Bg5 c6 5. Qd2 b5 6. O-O-O $5 ({Usual is} 6. f4) 6... Nd7 7. Nf3 h6 8. Bf4
Nb6 9. e5 $1 {White has an edge.} d5 $1 10. Bd3 Be6 11. h4 Rb8 {
Black cannot develop his kingside.} 12. Rdg1 b4 $1 13. Nd1 $5 (13. Ne2 $1 Nc4
14. Qe1 Qa5 15. Kb1 {leaves the queen's knight in active duty.}) 13... Nc4 14.
Bxc4 $2 (14. Qe2 $1 Qa5 15. Kb1 Rb6 16. Bd2 $1 {defends well.}) 14... dxc4 15.
c3 $2 (15. Ne3 $1 Qa5 16. Kd1 $1 Qxa2 $5 17. Ke2 $1 Qa4 18. Ra1 Qb5 19. c3 {
survives from the attack.}) 15... Qa5 $1 16. Kb1 $6 {He protects pawn a2.} Bf5+
$1 17. Ka1 Rb6 $1 18. b3 cxb3 19. cxb4 Rxb4 {The final standings became:
Najdorf and Panno 151/2/19, Garcia and Mecking 13, Rubinetti 12, Camara and
Rodriguez Vargas 11, Quinteros 101/2, Schweber 10, L. Bronstein and Rossetto
91/2, Van Riemsdijk 81/2, Rocha 71/2, Canobra and Riego Prieto 51/2, Garcia
Toledo and Silva Sanchez 41/2, Alvarez del Monte 3, Mendivil Salinas 11/2.  
Najdorf and Panno qualified immediately. Mecking took the third spot, when he
defeated Garcia by 21/2-1/2 in Sao Paolo 1969. When Palma de Mallorca 1970
started, Najdorf had given his place to Rubinetti. The South Americans did not
qualify for the candidates' matches. Bobby Fischer triumphed.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.??"]
[Round "1"]
[White "Fischer, Robert James"]
[Black "Tukmakov, Vladimir"]
[Result "1-0"]
[ECO "A01"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

{The 'Second International Tournament of the Municipality of the City of
Buenos Aires' was played by eighteen men in the 'Teatre General San Martin'
from 18 vii until 15 viii 1970. Nine participants were not South Americans.
Six from the nine others had qualified in a preliminary tournament.  
Fischer's game of the first round had been postponed. It occurred on a day for
adjourned games.} 1. b3 e5 2. Bb2 Nc6 3. c4 Nf6 4. e3 Be7 $5 (4... d5 5. cxd5
Nxd5 {draws in Larsen - Spassky, Leiden 1970.}) 5. a3 O-O 6. d3 d5 7. cxd5 Qxd5
8. Nc3 Qd6 9. Nf3 Bf5 10. Qc2 Rfd8 11. Rd1 h6 12. h3 $6 {
Fischer plays passively.} Qe6 13. Nd2 Nd7 14. Be2 Kh8 $6 (14... Qg6 $1 15. g4
Be6 {gains an edge.}) 15. O-O Bg6 16. b4 a6 17. Rc1 Rac8 18. Rfd1 f5 19. Na4
Na7 $6 ({Preferable is} 19... Nb6 $1 20. Nc5 Bxc5 21. bxc5 Nd5 {(Müller).}) 20.
Nb3 $1 b6 $6 (20... Qg8 $1 21. Nac5 Bf7 $1 {reorganises the defence.}) 21. d4
$1 {Bobby attacks in the centre.} f4 22. e4 $1 Nb5 $2 ({The alternative is} 
22... Bxe4 $1 23. Qxe4 Qxb3 24. Bxa6 Qxa4 25. Bxc8 Rxc8 26. dxe5 Nf8 {
and Black offers more resistance (Müller).}) 23. Bg4 Qf6 24. dxe5 Nxe5 25. Bxc8
Rxc8 26. Rd5 {Fischer came back after a difficult start.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.19"]
[Round "1"]
[White "Panno, Oscar"]
[Black "Mecking, Henrique"]
[Result "1-0"]
[ECO "A14"]
[Annotator "JvR"]
[PlyCount "105"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. b3 c5 7. Bb2 b6 8. e3 Bb7
9. Nc3 dxc4 10. bxc4 Nc6 11. Qe2 Nb4 12. d4 cxd4 13. exd4 Rc8 14. Rfd1 $5 (14.
a3 {occurred in Toran Albero - Parma, Palma de Mallorca 1969.}) 14... Re8 15.
a3 Nc6 16. Ne5 $1 Qc7 17. Nb5 Qb8 18. d5 $1 {White takes the initiative.} exd5
({The alternative is} 18... Nxe5 19. Bxe5 Qa8 $1) 19. cxd5 Nxe5 20. Qxe5 a6 21.
Qxb8 Rxb8 22. Na7 $1 (22. d6 Bxg2 23. Kxg2 axb5 24. dxe7 Rxe7 25. Bxf6 gxf6 26.
Rab1 {brings little advantage for Black.}) 22... Bd6 $5 23. a4 Ra8 $2 (23...
Rbd8 $1 24. Nc6 Rd7 25. Bd4 Bc7 {defends solidly.}) 24. Nc6 Rac8 25. Rac1 b5 $5
26. Rb1 Ba8 $6 (26... Ra8 $1 27. Bxf6 gxf6 28. axb5 axb5 29. Rxb5 Bc8 {
offers more resistance.}) 27. axb5 axb5 28. Bxf6 gxf6 29. Rxb5 {
Panno has gained a pawn.} Rc7 30. Rdb1 Kf8 31. Bf3 f5 32. Kg2 f4 33. g4 Bxc6 $6
34. dxc6 Be5 35. Re1 f6 36. Rb7 Ree7 37. Rd1 h6 38. Be4 Kf7 39. Kf3 Kf8 40. h4
Kf7 41. h5 Kf8 42. Rd8+ Re8 43. Rxe8+ Kxe8 44. Rb8+ $1 Kf7 45. Rh8 f5 46. Bd5+
Kg7 47. Rg8+ Kh7 48. Re8 fxg4+ 49. Kxg4 Bd4 50. f3 Be3 51. Kf5 Ra7 52. Ke6 Bc5
53. Rd8 {Panno slowly outplayed his opponent.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.21"]
[Round "3"]
[White "Fischer, Robert James"]
[Black "Gheorghiu, Florin"]
[Result "1-0"]
[ECO "C42"]
[Annotator "JvR"]
[PlyCount "69"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

{When Fischer received his plane ticket for Buenos Aires, he could not fly on
Friday and Saturday, because it was Sabbath. He arrived in the tournament hall
two hours before the third round began. Two days were added to the tournament
schedule. Bobby's demands were accepted. His chess event began.} 1. e4 e5 2.
Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Be7 {Gheorghiu plays a passive line.} 6.
Bd3 Nf6 7. h3 O-O 8. O-O Re8 9. c4 Nc6 $5 (9... Nbd7 {
drew in Bernstein - Süchting, Coburg 1904.}) 10. Nc3 h6 $5 11. Re1 Bf8 $2 ({
He should move} 11... d5 {at last.}) 12. Rxe8 Qxe8 13. Bf4 Bd7 14. Qd2 Qc8 15.
d5 Nb4 16. Ne4 Nxe4 17. Bxe4 Na6 18. Nd4 Nc5 19. Bc2 a5 20. Re1 Qd8 21. Re3 $6
({Better is} 21. b3 g5 22. Be3 $1) 21... b6 $2 {Black misses an opportunity.} (
{Müller mentions} 21... g5 $1 22. Bg3 Bg7 23. b3 Qf6) 22. Rg3 $1 Kh8 23. Nf3
Qe7 24. Qd4 Qf6 {Otherwise he cannot stop the attack.} 25. Qxf6 gxf6 26. Nd4
Re8 27. Re3 Rb8 $6 {Exchange prolongs the game.} 28. b3 b5 29. cxb5 Bxb5 30.
Nf5 Bd7 $5 (30... h5 31. Ng3 h4 32. Nf5 {also wins for White.}) 31. Nxh6 Rb4
32. Rg3 $1 Bxh6 33. Bxh6 Ne4 34. Bg7+ Kh7 $2 35. f3 {
Fischer had overcome the Russian Defence.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.23"]
[Round "4"]
[White "Gheorghiu, Florin"]
[Black "Bisguier, Arthur"]
[Result "1-0"]
[ECO "A29"]
[Annotator "JvR"]
[PlyCount "147"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

{Gheorghiu plays with more confidence against another American.} 1. c4 e5 2.
Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9.
Qc2 Qe7 10. d3 exd3 11. exd3 b6 $5 ({The alternative is} 11... d6) 12. Ne4 Nxe4
13. Bxe4 Bb7 14. Re1 Kh8 $6 (14... Qf6 $1 {wastes no time.}) 15. Bf4 Na5 16.
Bxb7 Qxe1+ $1 17. Rxe1 Rxe1+ 18. Kg2 Nxb7 19. Bxc7 Ree8 (19... d6 $5 20. Qa4
Nc5 21. Qc6 Rc8 22. Qd5 Re6 23. d4 {does not lose the bishop.}) 20. Bf4 Nc5 $6
21. d4 $1 Nb7 $6 22. Qa4 Re7 23. Bc7 d5 24. Bxb6 $1 {White wins a second pawn.}
dxc4 25. d5 $5 h6 26. Bd4 Nd6 27. Bc5 Rd8 28. Bxa7 $5 Ra8 29. Qc6 Rexa7 30.
Qxd6 Rxa2 31. Qc7 Rd2 32. d6 Ra1 $1 33. Qxf7 Rad1 34. Qf8+ Kh7 35. Qf5+ Kh8 36.
Qc8+ Kh7 37. Qxc4 Rxd6 {It will be hard to queen a pawn for Gheorghiu.} 38. h4
Re1 39. h5 Re5 40. g4 Ree6 41. Qb5 Rc6 42. f4 Kh8 43. Qb8+ Kh7 44. g5 $1 {
The rooks have a hard time against the queen.} hxg5 45. fxg5 Rxc3 $2 (45... Rc5
$1 46. Qf4 Kg8 47. c4 Rc8 {defends properly.}) 46. g6+ $1 Rxg6+ ({The pointe is
} 46... Kh6 47. Qf4+) 47. hxg6+ Kxg6 48. Qe5 {White has a theoretical win.}
Rc2+ 49. Kg3 Kh6 50. Qf4+ g5 51. Qd6+ Kg7 52. Qe7+ Kh6 53. Qf6+ Kh5 54. Qf3+ (
54. Qg7 $1 {decides the game immediately.}) 54... Kh6 55. Qf8+ Kh5 56. Qf7+ Kh6
57. Qf8+ Kh5 58. Qf3+ Kh6 59. Qh1+ Kg7 60. Kg4 Rc4+ ({Or} 60... Rc5 61. Qb7+
Kg8 62. Qa8+) 61. Kxg5 Rc5+ 62. Kf4 Rc4+ 63. Kf5 Rc5+ 64. Ke6 Rg5 65. Qe4 Rg6+
66. Kf5 Rf6+ 67. Kg5 Rf7 68. Qe8 Rf8 69. Qg6+ Kh8 70. Kh6 Rf7 $1 71. Qe4 $1
Rf6+ 72. Kg5 Rf7 73. Kg6 Rg7+ 74. Kh6 {Black will be mated.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.25"]
[Round "5"]
[White "Quinteros, Miguel"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "A35"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. c4 g6 2. Nc3 Bg7 3. Nf3 c5 4. d4 cxd4 5. Nxd4 Nc6 6. Nc2 Bxc3+ 7. bxc3 Nf6
8. f3 d6 9. e4 Be6 $5 ({Usual is} 9... Qa5) 10. Be2 Rc8 11. Ne3 Qa5 12. Bd2 Ne5
13. Qb3 Nfd7 $1 {Fischer pressures on the doubled pawns.} 14. f4 Nc5 15. Qc2
Nc6 16. O-O Qa4 $1 17. Qb1 $6 ({Preferable is} 17. Qxa4 Nxa4 18. f5 $1 Bd7 19.
f6) 17... Na5 18. e5 dxe5 19. fxe5 O-O $6 {He could have captured pawn c4.} 20.
Rf4 $5 Nd7 21. Nd5 $6 (21. Qb4 $1 Qxb4 22. cxb4 Nc6 23. a3 Ncxe5 24. Bc3 f6 25.
Rd1 {equalises.}) 21... Rfe8 22. Qe4 b5 $6 23. Rxf7 $1 Kxf7 $5 ({
The alternative is} 23... Nc5 $1 24. Qh4 Bxf7 25. Nxe7+ Rxe7 26. Qxe7 {
(Dvoretzky)} bxc4) 24. Qh4 $1 Kg7 25. Nxe7 Qc2 $5 26. Qh6+ $2 (26. Bh6+ $1 Kh8
27. Nxc8 Qxe2 28. Nd6 {gains a plus (Pilnik).}) 26... Kh8 27. Rc1 $5 Qxc1+ $5
28. Bxc1 Rxe7 29. cxb5 Nc4 30. Qh4 Rf7 31. Qd4 Kg8 32. Bf4 Rc5 33. Bf3 Rxb5 34.
h3 Ncxe5 35. Ba8 Rf8 36. Bxe5 Nxe5 37. Qxa7 Bd5 38. Bxd5+ Rxd5 39. Qe3 Ra5 40.
Qe2 Rfa8 41. a4 Nf7 42. h4 Rxa4 {
They played an exciting game. Fischer won a lot.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.26"]
[Round "6"]
[White "Tukmakov, Vladimir"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "B85"]
[Annotator "JvR"]
[PlyCount "43"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8.
Be3 Nc6 9. f4 Qc7 10. Kh1 a6 11. a4 Na5 12. Qd3 Bd7 13. g4 $5 Kh8 $6 ({
More natural is} 13... Rac8 14. g5 Ne8) 14. g5 $1 Ng8 {
Square h7 becomes a target.} 15. Rf3 Nc6 16. Rg1 Nxd4 $5 17. Bxd4 f5 $2 {
Panno gives g7 insufficient protection.} (17... f6 $1 18. g6 h6 19. f5 exf5 20.
exf5 Bc6 {defends by a counteraction.}) 18. Rh3 $1 e5 19. Nd5 $1 Qd8 20. fxe5
fxe4 ({The pointe is} 20... Bxg5 21. e6 $1 Bxe6 22. Bxg7+ $1 Kxg7 23. Qc3+ {
and White wins.}) 21. e6 $1 {A queen sacrifice decides the game.} h6 ({Or} 
21... exd3 22. Bxd3 {and Black cannot avoid mate.}) 22. gxh6 $1 {
White threatens hxg7#. Tukmakov competed for the second place.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.28"]
[Round "7"]
[White "Bisguier, Arthur"]
[Black "Reshevsky, Samuel"]
[Result "0-1"]
[ECO "D94"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 5. Nf3 O-O 6. Be2 d5 7. O-O cxd4 8. Nxd4
dxc4 9. Bxc4 a6 10. Qe2 e5 $5 (10... b5 {
occurred in Bisguier - Schmid, San Juan 1969.}) 11. Nc2 e4 12. Nd4 $5 b5 $1 13.
Bb3 Bb7 14. Rd1 Qe7 15. a4 $6 ({Preferable is} 15. Bd2) 15... b4 $1 16. Nb1
Nbd7 $5 17. Nd2 Nc5 18. a5 $2 (18. Bc2 Rac8 19. Nc4 {continues the development.
}) 18... Nfd7 19. Bc2 Ne5 20. N2b3 $6 ({Slightly better is} 20. Nc4 $1 Ned3 21.
b3) 20... Ncd3 $1 {Black advances deep in the hostile position.} 21. Bxd3 Nxd3
22. Rxd3 $5 {White has to lift the restraint.} (22. f3 f5 {
makes little difference.}) 22... exd3 23. Qxd3 Be4 24. Qf1 Bd5 25. Ra4 Rfc8 26.
Bd2 Bxb3 27. Nxb3 Bxb2 28. Rxb4 Bc3 $1 29. Rc4 ({Or} 29. Bxc3 Rxc3 30. Rb6 Qa3)
29... Rxc4 30. Qxc4 Bxd2 31. Nxd2 Qd8 32. Qa2 Rc8 33. h3 Qd3 34. Nf3 Rc1+ 35.
Kh2 Qd6+ 36. g3 Qd1 {Reshevsky overwhelmed his adversary.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.30"]
[Round "8"]
[White "Fischer, Robert James"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "A04"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O Nge7 7. Re1 d6 8. c3
O-O 9. d4 cxd4 10. cxd4 d5 11. e5 Bd7 12. Nc3 Rc8 $5 13. Bf4 {
He overprotects e5.} Na5 $2 {
Black advances on the queenside. He should counter in the central area instead.
} (13... f6 $1 14. exf6 Bxf6 15. Bh6 Bg7 {keeps the equality.}) 14. Rc1 b5 15.
b3 b4 16. Ne2 Bb5 17. Qd2 Nac6 $6 {Black should exchange.} 18. g4 $1 {
A slow advance on the kingside starts.} a5 19. Ng3 Qb6 20. h4 Nb8 $5 21. Bh6
Nd7 22. Qg5 Rxc1 23. Rxc1 Bxh6 24. Qxh6 Rc8 25. Rxc8+ Nxc8 26. h5 $1 Qd8 $2 {
The queen gives up the attack on d4.} ({Correct is} 26... Nf8 $1 27. Qf4 Qc7
28. g5 Ne7) 27. Ng5 $1 Nf8 28. Be4 $3 {Fischer finds an elegant win.} Qe7 ({
The pointe is} 28... dxe4 29. N3xe4 $1) 29. Nxh7 $1 Nxh7 30. hxg6 fxg6 31. Bxg6
Ng5 ({Or} 31... Qg7 32. Bxh7+ Qxh7 33. Qxe6+ {(Müller).}) 32. Nh5 Nf3+ 33. Kg2
Nh4+ 34. Kg3 Nxg6 35. Nf6+ Kf7 36. Qh7+ {and White delivers mate.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.07.30"]
[Round "8"]
[White "Smyslov, Vassily"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "A27"]
[Annotator "JvR"]
[PlyCount "61"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. c4 g6 2. Nf3 Bg7 3. Nc3 e5 4. d4 exd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. g3 Qe7 8.
Bg2 Qb4 {Szabo hopes to surprise his opponent.} 9. O-O {
But Smyslov is prepared.} Ne7 $5 (9... Qxc4 10. Bf4 Ne7 {
favoured White in Ragozin - Alatortsev, Moscow 1942.}) 10. Qd3 Ba6 11. Nb5 $1 {
White gains an advantage.} cxb5 12. Bxa8 bxc4 13. Qe3 Qb6 14. Bf3 Qxe3 15. Bxe3
Bxb2 16. Rab1 c3 $2 {Black is going to lose his advanced pawn.} (16... Be5 17.
Bxa7 d6 {offers more resistance.}) 17. Bc1 $1 d5 18. Bxb2 cxb2 19. Rxb2 Kd7 20.
Rd1 c6 21. Rb4 Ra8 22. e4 Kd6 23. exd5 cxd5 24. Rbd4 Bb7 25. Rb1 Bc6 26. Rdb4
Kc7 27. g4 Rf8 28. R4b3 a5 29. Re1 Nc8 30. Rc1 Ne7 $2 31. Re3 {
Smyslov won one game and drew the rest.} ({The pointe is} 31. Re3 Kd6 32. Rxe7
$1 Kxe7 33. Rxc6) 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.08.03"]
[Round "10"]
[White "Fischer, Robert James"]
[Black "Rossetto, Hector"]
[Result "1-0"]
[ECO "C99"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 d6 8. c3
Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. h3 cxd4 13. cxd4 Bb7 14. d5 Rfc8 15.
Bd3 Nc4 $6 ({More usual is} 15... Nd7) 16. Bxc4 bxc4 17. Re3 $1 {
Fischer is going to attack the weakling c4.} a5 18. Rc3 Qd7 $2 ({Preferable is
} 18... Qd8 $1 19. Qe2 Nd7 20. Nxc4 f5 21. exf5 Bxd5 {
and Black has counter-play for a pawn.}) 19. Qc2 Ba6 20. Nxc4 Rxc4 21. Rxc4
Bxc4 22. Qxc4 {He has won a pawn.} Rc8 23. Qd3 Qa4 24. Bg5 h6 25. b3 Qa3 26.
Bxf6 Bxf6 27. Qd2 Bd8 28. Rb1 Bb6 29. Rb2 Qc5 30. Ne1 Qc1 31. Qxc1 Rxc1 32. Kf1
f5 $6 33. exf5 Rd1 34. Ke2 Rxd5 35. Nc2 Kf7 36. Ne3 Rb5 $6 (36... Bxe3 37. fxe3
Rc5 {tries his luck in the rook ending.}) 37. a4 $1 Rc5 38. b4 axb4 39. Rxb4
Bc7 40. Rc4 Rxc4 41. Nxc4 Ke7 42. Ne3 Kd7 43. Nd5 Ba5 44. Kd3 Kc6 45. Kc4 Be1
46. f3 Bd2 47. g3 Be1 48. g4 Ba5 49. Ne7+ Kd7 50. Kb5 $1 {
Fischer showed his ability in the Ruy Lopez.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.08.06"]
[Round "12"]
[White "Fischer, Robert James"]
[Black "Bisguier, Arthur"]
[Result "1-0"]
[ECO "C78"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. d4 Nxd4 8.
Nxd4 exd4 9. c3 $5 {Fischer turns the variation into a real gambit.} ({Known is
} 9. e5) 9... Nxe4 10. Re1 Bd6 $5 (10... Be7 11. Qg4 O-O 12. Rxe4 Bxe4 13. Qxe4
Bf6 {will be played in Zuckerman - Bisguier, Netanya 1971.}) 11. Nd2 Bxh2+ $2 (
{Better is} 11... f5 $1 12. Nxe4 fxe4 13. Qg4 Qe7 14. cxd4 h6) 12. Kf1 $1 (12.
Kxh2 Qh4+ 13. Kg1 Qxf2+ {leads to perpetual check (Müller).}) 12... d5 13. Qh5
O-O (13... Qd6 14. Nxe4 dxe4 15. Qxf7+ Kd8 16. cxd4 {also favours White.}) 14.
Qxh2 dxc3 15. Nxe4 dxe4 16. bxc3 c5 17. Re3 c4 18. Bc2 Qf6 19. Rf3 $1 Qe6 20.
Rh3 Qf5 21. Be3 Rad8 22. Re1 Rd7 23. Bd4 Re8 $6 24. Rh5 g5 25. g4 $1 {
Fischer overwhelmed his countryman.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.08.09"]
[Round "14"]
[White "Fischer, Robert James"]
[Black "Rubinetti, Jorge"]
[Result "1-0"]
[ECO "C69"]
[Annotator "JvR"]
[PlyCount "55"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O {
Bobby made this line popular.} f6 6. d4 Bg4 7. dxe5 Qxd1 8. Rxd1 Bxf3 9. gxf3
fxe5 10. Be3 Bd6 $5 ({Known is} 10... Nf6) 11. Nd2 Ne7 12. Nc4 O-O-O 13. Rd3 b5
$5 (13... Ng6 {will be played in later games.}) 14. Na5 $5 Bb4 15. Nb3 Rxd3 16.
cxd3 Ng6 17. Kf1 Rf8 18. Ke2 Nf4+ 19. Bxf4 Rxf4 20. Rg1 Rh4 $2 (20... g6 $1 {
keeps the equality (Müller).}) 21. Rxg7 Rxh2 22. a3 Bd6 23. f4 $3 {
A pawn sacrifice opens the centre.} exf4 (23... c5 $5 {(Lutz) is answered by}
24. Rg5 $1 exf4 25. Nxc5 Bxc5 26. Rxc5) 24. d4 Kd8 $2 (24... c5 $1 25. e5 f3+
26. Ke1 c4 27. Na5 Bxa3 28. bxa3 c3 {(Müller)} 29. Rg1 h5 {
offers more resistance.}) 25. Na5 $1 c5 26. e5 $1 Bf8 27. Nc6+ Ke8 28. Rxc7 {
Fischer defeated his opponents in a universal style.} 1-0

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.08.11"]
[Round "15"]
[White "Szabo, Laszlo"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E49"]
[Annotator "JvR"]
[PlyCount "50"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 O-O 7. Bd3 d5 8.
cxd5 exd5 9. Ne2 b6 10. O-O Ba6 11. Bxa6 Nxa6 12. Ng3 Nc7 13. f3 Re8 {
They play an enterprising opening.} 14. Ra2 $5 ({Known is} 14. Qd3) 14... Qd7
15. Re2 Rad8 16. e4 $5 {Szabo makes the most aggressive move.} dxe4 17. fxe4
cxd4 18. Bg5 $5 (18. cxd4 Nb5 19. Ref2 $1 {equalises.}) 18... Nb5 19. Bxf6 $1
Nxc3 20. Qd3 Nxe2+ 21. Qxe2 d3 $5 (21... gxf6 $6 22. Nh5 Qe6 23. Nxf6+ Kg7 24.
Qf2 {brings a white edge.}) 22. Qd2 $2 {Szabo misses the escape.} ({Right is} 
22. Qh5 $1 gxf6 23. Nf5 Rxe4 24. Qh6 Rg4 $3 (24... Qxf5 $2 25. Rxf5 d2 26. Rg5+
$1 fxg5 27. Qxg5+ {wins for White}) 25. Qxf6 Kf8 26. Qh6+ Kg8 27. Qf6 {
and a repetition follows (Najdorf).}) 22... gxf6 23. Nf5 Re5 24. Rf4 Rxf5 25.
exf5 Kh8 {Najdorf competed among the best.} 0-1

[Event "Buenos Aires"]
[Site "Municipalidad 2"]
[Date "1970.08.15"]
[Round "17"]
[White "Tukmakov, Vladimir"]
[Black "Damjanovic, Mato"]
[Result "1-0"]
[ECO "E17"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1970.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 c5 7. d5 exd5 8. cxd5
d6 9. Nd2 $5 (9. Nh4 {was played in Guimard - Rossetto, Buenos Aires 1942.})
9... O-O 10. O-O Nbd7 11. a4 Ba6 12. b3 Ne8 13. Bb2 Nc7 14. Re1 Re8 15. f4 Bf6
$5 16. Nde4 Be7 17. Nf2 Rb8 18. Qd2 h6 19. h3 Bb7 20. e4 Bf6 {
They advance slowly.} 21. Nb5 Bxb2 22. Qxb2 Nxb5 23. axb5 Nf6 $1 24. Qc3 ({Or} 
24. Rxa7 Bxd5 $1 25. Qb1 Ra8 26. Rxa8 Bxa8) 24... Qd7 $6 25. Qd3 $6 ({Better is
} 25. Rxa7 $1 Qxb5 $6 26. e5 $1 dxe5 27. fxe5 Nxd5 28. Qc4) 25... Qd8 $2 ({
He should do} 25... Ba8 $1 {with the pointe} 26. e5 $5 dxe5 27. fxe5 $2 Nxd5
28. Rad1 Rbd8) 26. e5 $1 dxe5 27. fxe5 Nd7 (27... Nxd5 $6 28. Rxa7 $1 {
leads to a fatal pin.}) 28. Qf5 Nf8 29. g4 Ra8 30. Rad1 $2 (30. Ne4 $1 Bxd5 31.
Red1 $1 {wins for White.}) 30... Qg5 $2 (30... Qh4 $1 31. Rf1 Bc8 32. Qf3 Ng6 {
offers more resistance.}) 31. Ne4 $1 {
Tukmakov gives a centre pawn for a winning attack.} Qxf5 32. gxf5 Rxe5 33. Nd6
$1 Rxe1+ 34. Rxe1 Rb8 35. Re7 $1 Ba8 36. Nxf7 Nh7 37. Ne5 Nf6 38. Nc6 Re8 39.
Rxa7 Bxc6 40. bxc6 {The final standings became: Fischer 15/17, Tukmakov 111/2,
Panno 11, Najdorf, Reshevsky and Gheorghiu 101/2, Smyslov 9, Mecking and
Quinteros 81/2, O'Kelly and Damjanovic 8, Bisguier and Szabo 71/2, Garcia 7,
Rubinetti 61/2, Schweber and Rossetto 51/2, Agdamus 21/2.   Fischer had won
his last international tournament in a grand way. Hereafter, he would play an
olympiad, an interzonal and five matches.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.03.22"]
[Round "1"]
[White "Polugaevsky, Lev"]
[Black "Mecking, Henrique"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2640"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "117"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

{The twenty-ninth tournament in Mar del Plata was played at Hotel Nogaro from
22 iii until 10 iv 1971. Special guests were Polugaevsky, Savon, Gheorghiu,
Planinc and Browne.} 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 e6 5. b3 Nbd7 6. Bb2
Bd6 7. d4 O-O 8. Bd3 Re8 9. Qc2 e5 $5 ({Known is} 9... Qe7) 10. cxd5 cxd5 11.
dxe5 Nxe5 12. Nxe5 Bxe5 13. Ne2 Qd6 14. Bxe5 Qxe5 15. O-O Bd7 16. Nd4 Rac8 17.
Qe2 Qd6 18. Qb2 a6 $6 ({Preferable is} 18... Ne4 $1 19. Rac1 Qf6) 19. Rac1 Ng4
20. Nf3 Qb6 21. Rxc8 Rxc8 22. Rc1 Nf6 23. Rxc8+ Bxc8 24. Qc3 Bd7 25. Nd4 Ne8 $5
26. a4 Qc7 27. Qxc7 Nxc7 28. a5 $1 {
White has a positional advantage in the endgame.} Kf8 29. Kf1 Ke7 30. Ke2 g6
31. Kd2 Ne6 32. Nxe6 fxe6 33. f4 {All black pawns stand on white squares.} e5
$1 34. g3 Kd6 35. Kc3 Be6 36. Kb4 exf4 $2 {
Mecking misses the necessary counteraction.} ({Correct is} 36... d4 $1 37. exd4
exd4 38. h4 $1 Kc6 39. h5 gxh5 40. Bxh7 b6 41. axb6 Kxb6 42. f5 a5+ $1 43. Ka4
Bd7+ 44. Ka3 Kc5 {and Black survives.}) 37. gxf4 {
Capture by the other pawn would be fine too.} Bg4 38. Kc3 Bf3 39. Kd4 Bg2 40.
h4 Bf3 41. b4 {White has the better bishop obviously.} Bh1 $5 ({Or} 41... Bg4
42. e4 $1 dxe4 43. Bxe4 Bc8 44. Bd5) 42. Be2 $1 Bg2 43. Bg4 $5 Be4 44. Bc8 Kc7
45. Be6 Kd6 46. Bg8 $1 h6 47. Bf7 h5 48. Be8 $5 Bc2 49. Bf7 Be4 50. f5 $1 {
Polu opens the position in the bishop ending.} Bxf5 51. Bxd5 Bc8 52. e4 Ke7 53.
Ke5 g5 54. hxg5 h4 55. g6 h3 56. g7 h2 57. g8=Q h1=Q 58. Qf7+ Kd8 59. Qf8+ {
He delivers mate in two.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.03.24"]
[Round "3"]
[White "Sumiacher, Carlos"]
[Black "Planinc, Albin"]
[Result "0-1"]
[ECO "A20"]
[WhiteElo "2315"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "48"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

{The Slovenian Planinc was a welcome participant for a few years.} 1. c4 Nf6 2.
g3 e5 3. Bg2 c6 4. Nf3 e4 5. Nd4 d5 6. cxd5 Qxd5 7. e3 $5 ({Theory is} 7. Nc2
Qh5 8. h3 {(Benko - Tal, Reykjavik 1957).}) 7... c5 ({The alternative is} 7...
Bg4 $5 8. Qc2 Na6 9. Nc3 Nb4) 8. Nc3 $1 Qe5 $6 9. Nde2 $2 (9. Ndb5 $1 a6 10.
Qa4 {gains a plus.}) 9... Nc6 10. d3 exd3 11. Nf4 $6 ({Preferable is} 11. Bxc6+
bxc6 12. Qxd3) 11... c4 $1 12. Qa4 Qc5 13. b3 g5 $5 {
Planinc choses the most aggressive move.} 14. Ba3 $2 ({Correct is} 14. Nfd5 $1
Nxd5 15. Nxd5) 14... Qxa3 $1 15. Bxc6+ Kd8 $1 16. Qxc4 d2+ $1 17. Kxd2 Qb2+ $2
{He does not take the  easy way, but chases the king.} (17... Qd6+ $1 18. Bd5
gxf4 {wins a piece.}) 18. Kd3 $1 bxc6 19. Qxc6 Nd7 20. Rhd1 $2 {
White collapses.} ({The romantic} 20. Qxa8 Ne5+ $5 21. Kd4 Qd2+ $5 22. Kxe5
Bd6+ 23. Ke4 g4 $1 {(threatens ..f5#)} 24. Qxc8+ $1 Kxc8 25. Rac1 {
avoids mate and brings mutual chances.}) 20... Rb8 21. Nb5 Bb7 22. Qc7+ Ke8 $1
23. Rd2 Ne5+ 24. Ke2 Bf3+ {The attack on the white king leads to mate.} 0-1

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.03.27"]
[Round "5"]
[White "Schweber, Samuel"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2435"]
[BlackElo "2570"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Nf6 5. Bg2 d5 6. Nbd2 Be7 7. O-O Qc7 8. Re1
b6 9. c3 O-O 10. e5 Nd7 11. Qe2 Ba6 12. Nf1 d4 $5 ({Theory is} 12... b5 13. Bf4
b4 {(Gurgenidze - Kortschnoj, Riga 1958).}) 13. c4 b5 $1 14. b3 $6 ({
Preferable is} 14. N1d2 $1 Nb4 15. Rd1) 14... bxc4 15. bxc4 Rab8 {
Black controls the open file.} 16. Bf4 Rb6 17. h4 Rfb8 18. Ng5 Bxg5 19. hxg5
Bb7 20. Rab1 Nb4 21. Bxb7 Qxb7 22. Rb3 Qa6 23. Ra1 Qa4 24. Qd1 Nc6 25. Rxb6
Nxb6 26. Qf3 Nd7 27. Nh2 Ne7 $5 28. Qe2 Qb4 29. Rd1 Ng6 30. Nf3 Qb2 31. Qe4 $2
{White gives up a pawn.} (31. Rd2 Qc1+ 32. Qf1 {defends properly.}) 31... Qxa2
32. Kg2 Qb3 $5 33. Ra1 $1 Qb7 34. Qe2 $5 a6 35. Ra2 Qc6 36. Kh2 Rb6 37. Nd2 Qb7
38. Nf3 Rb1 39. Nd2 $4 Rh1# {
Panno continued the pressure and utilised his chances.} 0-1

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.03.28"]
[Round "6"]
[White "Najdorf, Miguel"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "2530"]
[BlackElo "2640"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5 7. O-O dxc4 8. Bxc4
Nc6 9. Bd3 cxd4 10. exd4 Be7 11. a3 a6 12. Bc2 b5 13. Qd3 Bb7 14. Re1 $5 ({
Known is} 14. Bg5 g6 15. Bh6 Re8) 14... g6 15. Bb3 $5 Rc8 16. Bh6 Re8 17. Ba2
b4 18. Ne2 Na5 19. Nf4 $2 {Najdorf allows a trick.} ({Preferable is} 19. Ne5)
19... b3 $1 20. Bxb3 Be4 $1 21. Qd1 $2 (21. Rxe4 $1 Nxb3 22. Qxb3 Nxe4 23. Nxe6
{(Polugaevsky)} Qd7 24. Nf4 {offers more resistance.}) 21... Nxb3 22. Qxb3 Bc2
$1 23. Qa2 Ng4 $1 {Black wins a piece.} 24. Nxe6 $1 {
But White has a great counteraction.} Qb6 $1 25. Ng7 $5 {
It is time for opportunism.} Bb3 $1 26. Qb1 Red8 {Black rescues an exchange.}
27. Nf5 $5 gxf5 28. Rxe7 Nxh6 {Black has gained the piece at last.} 29. Qd3 Qf6
30. Ra7 Bc4 31. Qd2 Bd5 32. Ne5 Ng4 33. Qf4 Nxe5 34. dxe5 Qg6 35. g3 Be4 36.
Re1 Rd3 37. e6 Qxe6 {Polu started by the perfect score of 6/6.} 0-1

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.03.30"]
[Round "7"]
[White "Mecking, Henrique"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2540"]
[BlackElo "2530"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
Qc7 9. O-O-O Nbd7 10. Be2 Rb8 $5 ({Usual is} 10... b5) 11. g4 b5 12. Bxf6 Nxf6
13. g5 Nd7 14. Bd3 b4 15. Nce2 Nc5 16. Rhg1 g6 17. f5 $1 {
White takes the initiative.} e5 18. Nb3 ({A great alternative is} 18. Bc4 $5
exd4 19. Bxf7+ $1 Kxf7 20. fxg6+ Ke8 $1 ({not} 20... Kxg6 $2 21. Nf4+ Kg7 22.
Nh5+) 21. Qf7+ Kd7 22. g7 Bb7 23. Qf5+ Kc6 24. gxh8=Q Rxh8 {and mutual chances.
}) 18... Nxd3+ 19. Qxd3 Bd7 20. f6 Bb5 $1 21. Qd2 Bd8 22. Ng3 O-O $6 {
Najdorf castles into the danger.} ({Better is} 22... h6 23. h4 hxg5 24. hxg5 a5
) 23. Qg2 $5 {The queen wants to move towards g7 in four steps.} Rc8 24. Kb1
Qd7 $2 (24... a5 $1 {counters.}) 25. Nf5 $3 gxf5 26. Qh3 Kh8 27. exf5 Be2 $6
28. Rg3 $6 (28. Rxd6 $1 Qxd6 29. g6 {triumphs (Mecking).}) 28... Bh5 $2 (28...
Qc6 $1 29. Rd2 $1 Bd1 $1 30. Rgg2 $1 Bxf6 31. gxf6 Qf3 32. Qh6 Rg8 33. Rg7
Bxc2+ 34. Rxc2 Qxf5 {offers a stubborn resistance.}) 29. Rf1 $1 Qb5 30. Rf2 $1
Qb6 31. Rfg2 Qb5 32. g6 $2 (32. Rf3 $1 e4 33. Rf4 Rg8 34. Qxh5 Bxf6 35. Rh4
Qxf5 36. Rf2 $1 {wins elegantly.}) 32... fxg6 33. fxg6 Bxf6 34. Qxh5 Qf1+ $6 (
34... Rc7 $1 {defends stubbornly.}) 35. Nc1 Rc7 36. gxh7 Rxh7 $4 ({Correct is} 
36... Bg7 {(Mecking).}) 37. Qxh7+ $1 Kxh7 38. Rh3+ {
White delivers mate in an exciting game.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.03.31"]
[Round "8"]
[White "Gheorghiu, Florin"]
[Black "Rubinetti, Jorge"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2530"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "115"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Be7 5. Bf4 c5 6. dxc5 Na6 7. e3 Nxc5 8.
cxd5 exd5 9. Bb5+ $5 (9. Be2 {
was played in Petrosian - Spassky, Moscow 1969 (23).}) 9... Bd7 10. Bxd7+ Qxd7
11. O-O O-O 12. Be5 Rfd8 13. Qe2 a6 $5 14. Rfd1 Qf5 15. Bc7 $1 {
White has an edge.} Rd7 16. Nd4 Qg6 17. Be5 Nfe4 18. Rac1 Re8 19. Nf3 Qe6 20.
b3 Bf8 21. Qc2 h6 $6 ({More active is} 21... Nxc3 22. Qxc3 Ne4 23. Qb2 f6) 22.
Ne2 Ng5 23. Ned4 Nxf3+ 24. Nxf3 Ne4 25. Bb2 Rdd8 26. Nd4 Qd7 27. Qc7 $1 {
Gheorghiu blockades and controls an open file.} Bd6 28. Qxd7 Rxd7 29. Nf5 Be5
30. Bxe5 Rxe5 31. Rc8+ $1 {He has kept his advantage in the endgame.} Kh7 32.
Nd4 Nf6 33. Rdc1 Re8 34. R8c7 Red8 35. f3 g6 36. Rxd7 Rxd7 37. Rc8 Kg7 38. Kf2
Nh7 39. Ke2 Nf8 40. Kd3 h5 41. a4 $1 {The restraint increases.} Re7 42. a5 Nd7
43. Kd2 $1 {Square c4 remains under white control.} (43. b4 $2 Ne5+ $1 44. Ke2
Nc4 {equalises (Gheorghiu).}) 43... Nf6 $2 {The knight should move towards e6.}
(43... Nf8 $1 44. g3 Rd7 45. h3 Ne6 46. Nxe6+ fxe6 47. Kd3 Kf6 {
gives better drawing prospects.}) 44. b4 $1 Ne8 45. Rd8 $1 Nc7 (45... Nf6 46.
b5 $1 axb5 47. Nxb5 Nd7 48. Nc7 {leads to the fall of pawn d5.}) 46. Kd3 Kf6
47. Nb3 Ke5 48. Nc5 $1 g5 $5 ({The pointe is} 48... Ne6 49. f4+ $1 Kf6 50. Rxd5
) 49. g3 f6 50. h3 Nb5 51. f4+ gxf4 52. gxf4+ Kf5 53. Rxd5+ Kg6 54. Rd7 Rxd7+
55. Nxd7 Na7 56. e4 Nc6 57. Kc4 Kf7 58. e5 {Gheorghiu won a fine endgame.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.03"]
[Round "10"]
[White "Savon, Vladimir"]
[Black "Mecking, Henrique"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "2570"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "143"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bf4 e6 7. e3 Bd6 8. Bg3
O-O 9. Bd3 h6 $5 10. Rc1 Bxg3 11. hxg3 Qb6 12. Qd2 Bd7 13. Na4 Qc7 14. Nc5 Rfc8
15. O-O Be8 16. b4 Qd6 17. b5 Nd8 18. Ne5 Nd7 19. Ncxd7 Bxd7 20. Rxc8 Rxc8 21.
Rc1 Rxc1+ 22. Qxc1 Be8 $5 23. Qc8 $1 Kf8 24. Qa8 Qb6 25. Qb8 Ke7 26. a4 f6 27.
Ng6+ Bxg6 $5 {Mecking avoids a draw.} (27... Kd7 28. Nf8+ Ke7 29. Ng6+ {
leads to perpetual check.}) 28. Bxg6 Kd7 29. Kh2 Qa5 $5 30. e4 $5 dxe4 31. d5
$5 exd5 32. Bf5+ Ke7 33. Qc8 Kd6 $1 34. Qd7+ Ke5 35. g4 Qb6 36. Qe7+ Ne6 37. a5
$1 Qd6 38. Qxb7 Nd4 39. b6 $1 axb6 40. a6 Nb5 $5 (40... Nxf5 41. a7 e3 $1 42.
fxe3 Ke4+ 43. Kh1 Qg3 {draws.}) 41. a7 Nxa7 $2 {Hereafter, White attacks g7.} (
{Better is} 41... Nc7 $1 42. a8=Q Nxa8 43. Qxa8 Qc5) 42. Qxa7 Kd4+ ({
The pointe is} 42... Qc5 $2 43. Qxg7 $1 Qxf2 $2 44. Qc7+ $1 {and White wins.})
43. Kh3 g5 44. Qa1+ Kc5 45. Qc1+ Kb4 46. Qd2+ Kc5 47. Qc3+ Kb5 48. Bg6 $6 ({
Preferable is} 48. f3 $1 exf3 49. Bd3+ Ka4 50. gxf3) 48... Qe5 $1 49. Qb3+ Kc5
50. Qa3+ Kb5 $2 {He blocks an important pawn.} (50... Kc4 $1 51. g3 b5 {
gives better drawing chances.}) 51. g3 $1 Kc6 52. Qa4+ b5 53. Qa7 $1 Qc7 54.
Be8+ $1 Kd6 55. Qxc7+ Kxc7 56. Bxb5 {The rest is simple.} Kd6 57. Kg2 Ke5 58.
Bd7 Kd4 59. Kf1 Kd3 60. Be6 Kd4 61. Ke2 Ke5 62. Bd7 Kd4 63. Bf5 Ke5 64. Bg6 Kd4
65. Kd2 Ke5 66. Ke3 d4+ 67. Ke2 Kd5 68. f3 e3 69. Kd3 Kc5 70. Be4 Kd6 71. f4
Kc5 72. Bf3 {Savon exhausted his opponent.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.04"]
[Round "11"]
[White "Pilnik, Herman"]
[Black "Rubinetti, Jorge"]
[Result "1-0"]
[ECO "C63"]
[WhiteElo "2420"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 fxe4 5. dxe4 Nf6 6. O-O d6 7. Nc3 Be7 8.
Qd3 Bg4 9. h3 Bxf3 10. Qxf3 {White has an edge in an old line.} O-O 11. Qd1 $5
({Known is} 11. Qd3) 11... Kh8 12. Be3 Qe8 13. Nd5 Bd8 $5 (13... Qf7 $1 14.
Nxf6 Bxf6 {saves a tempo.}) 14. Nxf6 Bxf6 15. c3 Qg6 (15... a6 16. Ba4 b5) 16.
Qg4 Qxg4 17. hxg4 {He has a better endgame.} h6 18. g3 Bg5 $6 19. f4 $1 Bf6 $2
(19... exf4 $1 20. gxf4 Bf6 {exposes white pawns.}) 20. Kg2 Rfe8 21. f5 $1 {
Pilnik attacks on the kingside.} Kg8 22. Rh1 Kf7 23. Bc4+ Ke7 24. Rh5 $1 {
The advance meets little opposition.} Nd8 25. g5 $1 hxg5 26. Bxg5 Nf7 27. Be3
Rh8 28. Rah1 Rxh5 29. Rxh5 Rg8 30. Kf3 a6 31. Rh7 $5 ({Even stronger is} 31. g4
$1) 31... Rh8 32. Rxh8 Nxh8 33. Kg4 g6 $5 34. fxg6 Nxg6 35. Kf5 Nf8 36. Bh6 Nd7
37. g4 Bh4 38. g5 c6 39. g6 Nf6 40. g7 d5 41. exd5 b5 42. d6+ Kxd6 43. Bb3 {
Pilnik played a fine positional game.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.06"]
[Round "12"]
[White "Planinc, Albin"]
[Black "Quinteros, Miguel"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2510"]
[BlackElo "2465"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

{Quinteros was the Don Juan of many tournaments.} 1. e4 g6 2. d4 Bg7 3. c4 d6
4. Nc3 e5 5. d5 Nd7 6. Nf3 Ne7 7. Be2 a5 {They play the Modern Defence.} 8. Be3
$5 f5 9. exf5 $5 Nxf5 10. Bg5 Bf6 11. h4 $5 Nc5 $1 {Black develops well.} 12.
Qd2 h6 13. Bxf6 Qxf6 14. O-O-O {Planinc wants to attack.} Ne7 15. g3 $5 Bd7 16.
Rdf1 Bg4 17. Nh2 Bxe2 18. Qxe2 Qf5 19. f4 $6 {
He gives a pawn and will not regain it.} (19. Ng4 $1 {activates a knight.})
19... exf4 20. Rf3 g5 $6 21. Rd1 $2 (21. gxf4 gxf4 22. Re1 Rh7 23. Ne4 {
equalises.}) 21... Kd7 $1 22. Qf1 $6 Ng6 $1 23. gxf4 gxf4 $6 (23... g4 $1 24.
Rg3 h5 {ends the game.}) 24. Ne2 Ne5 $1 25. Nd4 Qe4 26. Qh3+ Kd8 27. Ne6+ Nxe6
28. Qxe6 Re8 $1 29. Qf6+ Kd7 30. Rb3 Qxc4+ 31. Rc3 Qe4 $2 {
He does not deliver the decisive blow.} (31... Qxa2 $1 32. Qg7+ Re7 33. Rxc7+
Kxc7 34. Qxe7+ Nd7 {wins for Black.}) 32. Qg7+ Re7 33. Rxc7+ Kxc7 34. Qxe7+ Kb8
$6 {The quality suffers from time pressure.} (34... Kb6 35. Qxd6+ Kb5 $1 {
plays for a win.}) 35. Qxd6+ $6 (35. Qd8+ Ka7 36. Qxa5+ {
leads to perpetual check.}) 35... Ka7 36. Qc5+ b6 37. Qd4 $4 ({Correct is} 37.
Qc2 {and Black has a plus.}) 37... Rc8+ {White loses everything.} 0-1

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.06"]
[Round "12"]
[White "Rubinetti, Jorge"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "E31"]
[WhiteElo "2425"]
[BlackElo "2640"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 c5 5. d5 h6 6. Bh4 d6 7. e3 Bxc3+ 8. bxc3
e5 9. Qc2 Qe7 10. Nf3 Nbd7 11. Nd2 e4 12. Be2 $5 (12. O-O-O O-O 13. g4 $5 {
was played in Spassky - Kholmov, Moscow 1957.}) 12... g5 $5 {
Black wants to attack.} 13. Bg3 Nf8 $5 14. h4 Rg8 15. Rb1 Kd8 $5 16. h5 N8d7
17. Rb2 Ne5 $5 {He allows a remarkable exchange.} 18. Nxe4 $1 Bf5 19. Nxf6 Bxc2
20. Nxg8 Qf8 21. Bxe5 dxe5 22. Nxh6 Bh7 $5 {
Black has a queen for a rook, knight and two pawns.} 23. Ng4 Kc7 $1 24. Kd1 $5
({Preferable is} 24. Nf6 $1 Bf5 25. f3 {and the chances are about equal.})
24... Qd6 25. f3 e4 $5 26. Nf2 $2 ({Correct is} 26. Rf1 $1 Rf8 27. f4) 26...
exf3 27. gxf3 Re8 28. Nd3 $2 b6 $2 {Pawn e3 should be captured.} 29. e4 f6 30.
a4 g4 $1 31. fxg4 $2 (31. Rg1 gxf3 32. Bxf3 {defends properly.}) 31... Rxe4 32.
a5 Qg3 33. axb6+ axb6 34. Nc1 Qxc3 35. Rd2 Rd4 36. Rxd4 Qxd4+ 37. Ke1 Qe3 38.
Kd1 Qc3 {Polugaevsky kept on winning.} 0-1

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.07"]
[Round "13"]
[White "Najdorf, Miguel"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "2530"]
[BlackElo "2570"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. Qc2 O-O 5. a3 Bxc3 6. Qxc3 d6 7. g3 e5 8. Bg2
Re8 9. O-O c5 $5 10. d3 Nc6 11. e3 a5 12. b3 Rb8 13. Bb2 b5 14. cxb5 Rxb5 15.
Nd2 Ne7 16. f4 $1 Bb7 $6 17. e4 $6 (17. fxe5 dxe5 18. Qc4 Bxg2 19. Rxf6 gxf6
20. Qxb5 {favours White.}) 17... Nc6 18. fxe5 dxe5 19. a4 Rb4 20. Qxc5 Nd7 $2 {
Black loses material.} ({Correct is} 20... Nd4 $1 21. Bxd4 Rxd4 {
and Black regains the pawn.}) 21. Qf2 $1 f6 22. Bc3 Ba6 $5 23. Bxb4 Nxb4 24.
Nc4 Nxd3 25. Qe3 Bxc4 26. bxc4 Qb6 $6 ({Better is} 26... N7c5 $1 {(Gheorghiu)}
27. Rfb1 $1 Qc7 28. Rb5 Rd8 29. Bf1 $1 {but White has a great advantage.}) 27.
Qxb6 Nxb6 28. Rfb1 $1 Nb4 29. c5 $1 Nd7 30. Rc1 $1 {
Najdorf, Panno and Quinteros were the best Argentinians.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.07"]
[Round "13"]
[White "Poch, Cesar"]
[Black "Planinc, Albin"]
[Result "0-1"]
[ECO "D91"]
[WhiteElo "2300"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "54"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 d5 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8.
Nf3 exd5 9. e3 O-O 10. b4 c6 11. Qb3 Be6 12. Be2 Nd7 $5 13. O-O g5 $1 {
Planinc charges surprisingly.} 14. Rfd1 Qe7 15. b5 $6 (15. Bd3 g4 16. Nd2 {
defends.}) 15... f5 $1 16. Rac1 $5 {White acts slowly.} (16. bxc6 $6 bxc6 17.
Qb7 $5 g4 18. Ne1 Rab8 {invites a charge on two fronts.}) 16... g4 $1 17. Ne1
f4 $1 18. bxc6 bxc6 19. Na4 Rab8 20. Qc3 g3 {Black threatens ..gxf2+.} 21. hxg3
fxg3 22. fxg3 Qg5 $5 23. Nf3 Qxg3 24. Qxc6 $2 (24. Qe1 $1 Qd6 25. Rc3 Bf5 26.
Rdc1 {combines defence and attack.}) 24... Rbe8 $1 25. Qc7 {
He wants to exchange the queens.} (25. Rc3 Bh6 {and White will be crushed.})
25... Ne5 $3 {The knight intervenes on a diagonal.} 26. dxe5 Bh3 $1 27. Bf1
Rxf3 $1 {Planinc has almost achieved mate.} 0-1

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.08"]
[Round "14"]
[White "Savon, Vladimir"]
[Black "Poch, Cesar"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2570"]
[BlackElo "2300"]
[Annotator "JvR"]
[PlyCount "37"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3 6. bxc3 Bg7 7. Rb1 Nd7 8.
Nf3 Rb8 9. O-O O-O 10. d4 b6 $5 ({Known is} 10... Nb6 {
(Averbakh - Gheorghiu, Budapest 1971).}) 11. e4 e5 12. Re1 {
White has the initiative.} Bb7 13. Qa4 Ra8 $6 ({Preferable is} 13... a6) 14.
Bh3 c6 15. Ba3 Re8 16. Qb3 Qc7 $4 ({Correct is} 16... exd4 $1 17. cxd4 Nf8) 17.
Ng5 $1 Nf8 ({Or} 17... Nf6 18. Bd6 $1 Qxd6 19. Qxf7+ Kh8 20. Qxb7) 18. Bd6 $1
Qxd6 19. Nxf7 $1 {Savon threatens to deliver mate in two or capture the queen.
The second Soviet player won five games as White and became number two.} 1-0

[Event "Mar del Plata"]
[Site "29"]
[Date "1971.04.10"]
[Round "15"]
[White "Polugaevsky, Lev"]
[Black "Browne, Walter"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2640"]
[BlackElo "2500"]
[Annotator "JvR"]
[PlyCount "141"]
[EventDate "1971.03.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 O-O 6. Nf3 e5 7. d5 Nbd7 8. O-O
Nc5 9. Qc2 a5 10. Bg5 h6 11. Be3 b6 12. Nd2 Ne8 $5 ({Usual was} 12... Ng4 13.
Bxg4 Bxg4) 13. f3 f5 14. exf5 gxf5 $5 15. f4 e4 16. Nb3 Nxb3 17. axb3 $5 Bd7
18. Qd2 Nf6 19. Bd4 Kh7 20. Nd1 Qe8 21. Ne3 Qg6 22. Bc3 Rg8 23. Qe1 Bh8 24. Qh4
Raf8 25. h3 Qg3 26. Qxg3 Rxg3 27. Kf2 Rgg8 {The chances are equal.} 28. b4 axb4
29. Bxb4 Ra8 30. Bc3 h5 31. g3 Kg6 32. Rg1 Kh6 33. Rxa8 Rxa8 34. g4 $1 fxg4 35.
hxg4 Bxg4 36. Bxg4 hxg4 37. f5 $5 Kg5 38. Bd2 Ra2 $2 ({Correct is} 38... Rg8)
39. Nxg4+ $1 Kxf5 $2 (39... e3+ $1 40. Nxe3+ Kf4 41. Ke2 Ra8 {costs a pawn.})
40. Nh6+ Ke5 41. Bc3+ $1 ({Not} 41. Nf7+ $2 Kd4 42. Bc3+ Kxc4) 41... Kf4 42.
Ke2 $5 Ra4 43. Rf1+ Kg3 44. Bxf6 Bxf6 45. Rxf6 {White has gained a piece.} Rxc4
46. Nf5+ Kg4 47. Ne3+ Kg5 48. Rf7 Rb4 49. Nd1 Rb5 50. Rxc7 Rxd5 51. Nc3 Rd4 52.
Ke3 Rb4 53. Rg7+ Kf5 54. Rg2 Ke5 55. Rd2 Rc4 56. Rd5+ Ke6 57. Rb5 Kd7 58. Rxb6
Kc7 59. Nd5+ Kd7 60. b3 Rc6 61. Rb7+ Ke6 62. Kd4 Rc1 63. Re7+ Kf5 64. Ne3+ Kf4
65. Rxe4+ Kf3 66. Re7 Rb1 67. Kc3 Re1 68. Nf5 Rc1+ 69. Kd2 Rc5 70. Nd4+ Kg4 71.
Rg7+ {Walter Browne had a  difficult tournament. The final standings became:
Polugaevsky 13/15, Savon and Panno 10, Gheorghiu 91/2, Najdorf and Quinteros 9,
Planinc 81/2, Mecking and Pilnik 8, Browne 71/2, Schweber 7, Rubinetti 51/2,
Brond and Sumiacher 5, Poch 4, Juarez 1. Polu won eleven games!} 1-0

[Event "Mar del Plata"]
[Site "30"]
[Date "1976.03.13"]
[Round "5"]
[White "Brond, Victor"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "D86"]
[WhiteElo "2345"]
[BlackElo "2480"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1976.03.??"]
[SourceDate "1999.07.01"]

{The thirtieth tournament in Mar del Plate was played at Hotel Provincial from
8 until 26 iii 1976. Only South Americans participated and the strongest
Argentinians stayed away. The future winners met in the fifth round.} 1. d4 Nf6
2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 b6 8. Ne2 Bb7 9.
f3 Nc6 (9... O-O 10. O-O Nc6 {was played in Buy - Sanguineti, Zarate 1973.})
10. Be3 O-O 11. Qd2 e6 $5 (11... Na5 12. Bd3 c5 {
occurred in Lombard - Stoutenborough, Reggio Emilia 1974.}) 12. h4 $5 {
White wants to attack.} Na5 13. Bd3 Qe7 14. Bh6 Rfd8 $6 {
Defenders leave the black king.} ({Preferable is} 14... f6 $1) 15. h5 $1 Qf8 $6
16. Bxg7 Qxg7 17. e5 c5 {Black counters in the centre.} 18. Kf2 Nc6 $5 19. Qe3
$2 (19. Rh4 $1 cxd4 20. cxd4 Ne7 21. Rah1 {decides the game.}) 19... cxd4 20.
cxd4 Nb4 21. Be4 Bxe4 22. Qxe4 Rac8 23. hxg6 hxg6 $4 {
He should not open the h-file.} ({Right is} 23... Qxg6 $1 24. Qh4 Nd3+ 25. Kg1
Kh8 26. Rh2 Rf8 27. Ng3 f6 {defends well.}) 24. Rh4 Nd5 25. Rah1 $1 Ne7 26.
Rh8+ $1 {White wins material.} (26. Rh8+ Qxh8 27. Rxh8+ Kxh8 28. Qh4+ {
gains a piece.}) 1-0

[Event "Mar del Plata"]
[Site "30"]
[Date "1976.03.16"]
[Round "8"]
[White "Sanguineti, Raul"]
[Black "Garcia, Raimundo"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2480"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "95"]
[EventDate "1976.03.??"]
[SourceDate "1999.07.01"]

1. c4 c5 2. b3 b6 3. Bb2 Bb7 4. Nf3 Nf6 5. e3 e6 6. d4 $5 ({Usual is} 6. Be2)
6... cxd4 7. exd4 Bb4+ 8. Nbd2 Bxf3 9. Qxf3 Bxd2+ $6 10. Kxd2 {
The king is alright in the centre and the two bishops favour White.} d5 11.
cxd5 Nxd5 12. Ba3 Qg5+ 13. Ke1 $1 Qf4 $6 14. Qxf4 Nxf4 {
Black has no counter-play.} 15. Rc1 Kd8 16. Bd6 Nd5 17. Bc4 Kd7 18. Be5 Nc6 $1
19. Bb5 Ndb4 $6 (19... Rhc8 $1 20. Bxg7 a6 21. Bxc6+ Rxc6 22. Rxc6 Kxc6 {
leads to compensation for the pawn.}) 20. Bxg7 Rhc8 21. a3 a6 22. Bxc6+ Nxc6
23. Ke2 $1 Rg8 24. Be5 $1 f6 25. Bxf6 Rxg2 26. Rc3 $6 ({Better is} 26. Be5 $1)
26... Rf8 27. Rf3 Rg4 28. Rd1 Re4+ 29. Kd3 Rxd4+ $2 (29... Rh4 $1 {
brings a great escape.}) 30. Bxd4 Rxf3+ 31. Be3 Rh3 32. Ke4+ Ke7 33. Bxb6 Rxb3
34. Bc5+ Kf6 35. Rd6 {Sanguineti has a positional advantage in the endgame.}
Ne7 $2 {Black should defend passively.} (35... Nb8 36. f4 Kf7 37. h4 Rb7 {
tries to hold out.}) 36. Rxa6 {Thank you!} Nf5 37. a4 Rh3 38. a5 {
The a-pawn decides quickly.} Rh4+ 39. Kf3 Rxh2 40. Ra8 Rh3+ 41. Kg2 Rh5 42.
Rf8+ Kg7 43. Rc8 $1 Nd6 44. Bxd6 Rxa5 45. Rc7+ Kg6 46. Re7 Kf5 47. Rxh7 e5 48.
Rh5+ {The final standings became: Brond and Sanguineti 11/15, Garcia and
Rubinetti 91/2, Cuasnicu 81/2, Schweber and Seidler 8, Hase and Van Riemsdijk
7, Emma, Garcia Palerma, Grinberg, Rocha and Trois 61/2, L. Bronstein 6,
Letellier 2.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "1"]
[White "Szmetan, Jorge"]
[Black "Gheorghiu, Florin"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "2420"]
[BlackElo "2520"]
[Annotator "JvR"]
[PlyCount "98"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

{When the Chess Olympiad happened for the second time in Buenos Aires, the
opportunity to organise a closed tournament was utilised. The morning paper
'Clarin' sponsored the event and reported about it daily. Five Argentinians
competed with nine foreigners from 14 xi until 1 xii 1978.  Four Clarin
tournaments would be organised. They revived the organisation of Buenos Aires
1960, because most participants were foreigners. That had become usual for
international events.} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6.
g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. f4 d6 10. g4 Nc6 11. Nb3 d5 12. exd5 $5 (12. e5
{was played in Szmetan - Dorin, Buenos Aires 1976.}) 12... Rd8 13. a3 $6 ({
Preferable is} 13. Qf3 Nxd5 14. Nxd5 exd5 15. c3) 13... Nxd5 14. Bxd5 Bf6 $6 (
14... exd5 $1 15. Nxd5 Qd7 16. Nxe7+ Qxe7 17. Bd2 Be6 {
starts an attack at the cost of a pawn.}) 15. Qf3 $6 (15. Qe2 $1 exd5 16. Nxd5
{takes the initiative.}) 15... exd5 16. Nxd5 Rxd5 $1 17. Qxd5 Qb6+ $5 18. Kh1
$5 Bxg4 19. Qg2 Bf5 20. Bd2 $5 Bxb2 21. Rab1 Bf6 22. Na5 $6 (22. Rfe1 $1 {
equalises.}) 22... Qd4 $1 23. Nxc6 bxc6 24. Rb4 $2 (24. Rfe1 $1 Be6 25. Rxe6 $1
fxe6 26. Qxc6 Qd5+ 27. Qxd5 exd5 28. Ba5 {offers a stubborn resistance.}) 24...
Qd6 25. Rc4 $6 Bh3 $1 26. Qxh3 Qd5+ 27. Qf3 Qxc4 {Black has an extra pawn.} 28.
Qd3 Qa4 $5 29. Re1 h6 30. Re4 Qb5 31. Qxb5 axb5 32. Bb4 Bb2 33. Re3 Bd4 34. Rd3
Rd8 35. Kg2 Rd5 36. Kf3 f5 37. Bc3 Bc5 38. Rxd5 cxd5 39. Bb2 Kf7 40. h3 g5 41.
Bc1 Kg6 42. Bb2 Bd6 43. fxg5 hxg5 44. Bc1 Kh5 45. Bb2 Kh4 46. Bc1 f4 47. Kg2
Be7 48. Bb2 f3+ 49. Kxf3 Kxh3 {Gheorghiu attacked in a bright way.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "2"]
[White "Andersson, Ulf"]
[Black "Garcia Palermo, Carlos"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2545"]
[BlackElo "2385"]
[Annotator "JvR"]
[PlyCount "145"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. d4 Be7 6. Nc3 Ne4 7. Bd2 Bf6 8. O-O
O-O 9. Rc1 Nxc3 $5 10. Bxc3 Be4 11. Ne1 Bxg2 12. Nxg2 d6 13. e4 Nd7 14. f4 Qc8
$5 15. Ne3 Qb7 16. Qd3 Rae8 17. Ng4 Bd8 18. Rce1 Nf6 19. Nf2 a6 20. b3 Nd7 21.
Re2 c6 22. e5 $1 {White has the initiative.} Be7 23. exd6 Bxd6 24. Ne4 Be7 25.
f5 exf5 26. Rxf5 g6 27. Rf1 f5 $1 28. Nf2 Nf6 29. Rfe1 Bd8 30. Bb4 Rxe2 31.
Qxe2 Rf7 $1 32. Qe6 Kg7 33. Bd6 Qd7 34. Nd3 Ne4 35. Be5+ Bf6 36. Bxf6+ Nxf6 37.
Qe5 Rf8 38. Qe7+ Rf7 39. Qe3 Ng4 40. Qf4 Re7 41. Rxe7+ Qxe7 {
The game has become equal.} 42. h3 Qe2 $1 43. hxg4 Qxd3 44. gxf5 gxf5 45. Kg2 {
Andersson likes to play a queen ending.} Qe2+ 46. Qf2 Qe4+ 47. Qf3 $1 Qxd4 48.
Qxc6 a5 49. Qe6 Qc5 $5 50. Kf3 $1 h6 51. Kg2 Qa3 52. Qxb6 $5 Qxa2+ 53. Kf3 Qd2
$5 (53... Qb1 $1 {draws easily.}) 54. Qe3 $1 Qd6 $5 {
Exchange leads to a difficult draw.} 55. Ke2 Kg6 56. Qd3 Qe5+ 57. Kf3 h5 58.
Qe3 Qf6 $5 59. Qe8+ Kh6 $2 {Black should accept the exchange of queens.} (59...
Kg5 $1 60. c5 Qc3+ $1 61. Qe3+ Qxe3+ 62. Kxe3 Kf6 63. Kf4 Ke6 {
still draws in a pawn ending.}) 60. c5 $1 Kg5 $5 {Too late!} ({The pointe is} 
60... Qc3+ 61. Qe3+ Qxe3+ 62. Kxe3 {and White wins.}) 61. c6 $1 f4 62. Qg8+ Kh6
63. Qc4 $1 fxg3+ 64. Kxg3 Qd8 65. c7 Qc8 66. Kf4 a4 67. Qc6+ Kg7 68. bxa4 Qg4+
69. Ke5 Qg3+ 70. Kd5 Qf3+ 71. Kc5 Qa3+ 72. Kb5 Qb3+ 73. Ka5 {
Ulfie won a fine endgame.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "3"]
[White "Szmetan, Jorge"]
[Black "Andersson, Ulf"]
[Result "0-1"]
[ECO "B28"]
[WhiteElo "2420"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "138"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Qxd5 5. d4 Nf6 6. Be2 e6 7. c4 $5 ({
Theory is} 7. O-O Nc6 8. Be3) 7... Qd8 8. Nc3 Nc6 9. Be3 cxd4 10. Nxd4 Bd7 11.
O-O Qc7 12. Rc1 Rd8 13. Qb3 $6 Na5 14. Qc2 Bd6 $1 {
Black protects the queen first.} 15. h3 Nxc4 {He gains a pawn.} 16. Bxc4 $2 (
16. Bg5 $1 Bh2+ 17. Kh1 Bf4 18. Ne4 Nxe4 19. Bxd8 Qxd8 20. Qxe4 Bxc1 21. Rxc1
Na5 22. Bd3 {brings counter-play for White.}) 16... Qxc4 17. Ne4 Qxc2 18. Nxd6+
Ke7 19. Rxc2 $6 ({Better is} 19. Nxc2 Kxd6 20. Nb4 Bc6 21. Rfe1) 19... Kxd6 20.
Nb3 Bc6 21. Na5 Nd5 22. Bc5+ Kd7 23. Rfc1 f6 24. f3 h5 25. h4 Rb8 26. Bf2 $6 ({
Preferable is} 26. Nxc6 bxc6 27. Rd2) 26... Rhc8 $1 27. Bg3 e5 28. Rd2 Ke6 29.
Nb3 Ne7 30. Bf2 Rd8 31. Rdc2 Rd5 32. Bb6 Kf7 33. Nc5 Re8 34. a4 Kg6 35. a5 Kf5
36. Kf2 Kg6 37. b3 Kf7 38. Kg1 Rb8 39. Kf2 Rc8 40. Kg1 Rd6 {
The game is adjourned.} 41. Ne4 Bxe4 42. Rxc8 Nxc8 43. Rxc8 Rd1+ 44. Kh2 Bc6 $1
45. Rc7+ Kg8 46. Rc8+ Kh7 47. Rd8 Rb1 $1 {The rooks should not be exchanged.}
48. Rd3 Rb2 49. Kg1 $2 Kg6 $2 (49... e4 $1 50. fxe4 Bxe4 51. Rg3 Bd5 {
gains a second pawn.}) 50. Rc3 Kf5 51. Bf2 Ke6 52. Bc5 Bd5 53. b4 Kf5 54. Rd3
Bc6 55. Rc3 Kf4 $1 56. Kh2 g5 $1 {A second adjournment occurs.} 57. hxg5 fxg5
58. Rc4+ Kf5 59. Kh3 Bb5 $6 (59... e4 $1 60. g4+ Kf4 61. fxe4 hxg4# {
wins at once.}) 60. Rc1 Kf4 61. Kh2 Be2 62. Kg1 g4 63. fxg4 hxg4 64. Bd6 g3 65.
Re1 Kf5 66. Kh1 Rd2 67. Bc7 ({Or} 67. Bc5 Bb5 68. Be3 Rb2 69. Bc5 Bc6 $1 70.
Rg1 Kf4 71. Rf1+ Kg4 72. Rg1 Rf2) 67... Rd4 $1 68. Bb6 Rh4+ 69. Kg1 Rxb4 $1 {
Andersson drew short games and won lengthy encounters.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "4"]
[White "Panno, Oscar"]
[Black "Qi Jingxuan"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2580"]
[BlackElo "2200"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 d6 3. g3 Be6 4. d3 Nd7 5. Bg2 c6 6. Nf3 Be7 7. e4 $5 ({
Theory is} 7. O-O) 7... h6 8. O-O Ngf6 9. b3 O-O 10. d4 $1 Bg4 11. h3 Bxf3 $6
12. Bxf3 Re8 13. d5 $1 Bf8 14. Be3 c5 15. h4 a6 16. Kg2 b5 $2 {
Black should remain passively.} ({Correct is} 16... b6) 17. cxb5 Qa5 18. Qd3 $1
Reb8 19. a4 Be7 20. Rfb1 Bd8 21. Be2 $1 {White overprotects pawn b5.} axb5 22.
Nxb5 Qa6 23. Qc2 Qb6 24. f3 Rc8 25. Bd2 Ne8 26. a5 {
He takes over the attack on the queenside.} Qb8 27. Ra4 Be7 28. Qa2 Nc7 29. Na3
Qa7 30. Be3 Rab8 31. b4 Qa8 32. Nc4 $5 Rxb4 33. Rbxb4 cxb4 34. Nb6 $1 b3 $5 35.
Qxb3 Qb8 36. Rb4 {Panno played a solid positional game.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "6"]
[White "Smyslov, Vassily"]
[Black "Szmetan, Jorge"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "2575"]
[BlackElo "2420"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. Bg5 Qb6 5. Nc3 b4 $5 {
Black makes an early advance on the queenside.} 6. Na4 Qa5 7. Bxf6 gxf6 8. b3
d6 9. e4 Bg7 10. Bd3 f5 $1 11. exf5 $5 {White sacrifices an exchange.} Nd7 $5 (
11... Bxa1 $5 12. Qxa1 f6 13. O-O Nd7 {brings interesting play.}) ({
The alternative is} 11... Bb7 $1 12. O-O Bxd5 $1) 12. Rb1 Nf6 $2 (12... Bb7 13.
Bc4 Nb6 $1 14. Nxb6 axb6 {keeps the equality.}) 13. O-O O-O 14. Nd2 Qd8 $5 {
Black accepts the passivity.} (14... Nxd5 $2 15. Be4 Bb7 {(Cvetkovic)} 16. Nc4
{wins for White.}) 15. c4 e6 16. dxe6 fxe6 17. Qf3 $1 Rb8 18. Rfe1 exf5 19.
Bxf5 Bxf5 $2 (19... Ng4 $1 20. Qd5+ Kh8 21. Bxc8 Rxc8 {
gets counter-play for the pawn.}) 20. Qxf5 Kh8 $5 21. Nf3 Nd7 22. Qh3 Rb7 23.
Re6 Rf6 24. Rd1 Nf8 25. Nxc5 $1 Nxe6 26. Nxb7 Qe7 27. Re1 Rh6 28. Qf5 Bc3 29.
Re3 Rg6 30. g3 Rf6 31. Qd5 Qd7 32. c5 Nc7 33. Qd3 d5 34. Nd6 Qc6 $2 35. Re7 $1
Rh6 36. Nf7+ {Black loses everything.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "7"]
[White "Szmetan, Jorge"]
[Black "Browne, Walter"]
[Result "0-1"]
[ECO "D40"]
[WhiteElo "2420"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. e3 Nc6 5. d4 d5 6. a3 a6 7. dxc5 Bxc5 8. b4
Ba7 9. Bb2 O-O 10. Qc2 Qc7 11. cxd5 exd5 12. Be2 $5 ({Known is} 12. Ne2) 12...
Re8 13. O-O $6 ({Better is} 13. b5 Ne5 14. Nxe5 Rxe5 15. Rc1) 13... d4 $1 14.
exd4 Nxd4 15. Nxd4 Bxd4 {Black has the initiative.} 16. Rac1 Bg4 17. Bd3 Qe5
18. Na4 Rad8 19. Bxd4 Qxd4 20. Nb2 $1 Rc8 21. Qb1 g6 22. h3 Be6 23. Rxc8 Rxc8
24. Rc1 $2 ({Correct is} 24. Na4 $1 a5 25. Rd1 axb4 26. axb4) 24... Rc3 $1 25.
Rxc3 Qxc3 26. b5 (26. Qa1 $5 {leads to a positional disaster (Becker).}) 26...
axb5 27. Bxb5 Qxa3 {Black has gained a pawn.} 28. Bc4 Nd5 29. Qc2 Qc3 30. Qb1
h5 31. Bf1 Qd4 32. Nd3 b6 33. Ne1 Nc3 34. Qb2 Bd5 35. Nd3 Bc4 36. Qc2 b5 37. g3
b4 38. Nb2 b3 39. Qc1 Bd5 40. Bd3 $2 Qxd3 $1 {Browne ends with a nice trick.}
0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "8"]
[White "Torre, Eugenio"]
[Black "Andersson, Ulf"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2490"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "178"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 g6 5. O-O Bg7 6. Re1 O-O 7. Bf1 Nc6 8. h3
e5 9. d3 $5 ({The alternative is} 9. d4) 9... h6 10. a3 Bd7 11. b4 cxb4 12.
axb4 b5 13. Na3 Qb8 14. Nc2 d5 15. Nd2 $5 a5 16. bxa5 Nxa5 17. Nb4 Be6 18. Bb2
dxe4 19. dxe4 $5 Qb7 20. Qe2 Rfd8 21. Qe3 Ne8 22. Nd3 Qc6 23. Nb4 Qb7 24. Nd3
Qc6 25. Nb4 Qd7 {Andersson plays for a win.} 26. Red1 Nd6 27. Qb6 Rdb8 28. Qe3
Qb7 29. Rdb1 $5 Bf8 30. Bc1 Rc8 31. Nd3 $6 ({Better is} 31. Qf3 Kh7 32. Bd3)
31... Nac4 $1 {He blockades.} 32. Nxc4 Nxc4 33. Qe1 Rxa1 34. Rxa1 Kh7 $5 35.
Rb1 Ra8 36. Qe2 Qd7 37. Be3 Qc6 38. Bc1 Be7 39. g3 h5 40. Nb4 Qd7 {
Black has a plus.} 41. h4 Rd8 $1 42. Qe1 Kg7 $5 43. Nc2 Qc6 44. Bg2 Bc5 45. Nb4
Qd7 46. Bf1 Ra8 47. Bg5 f6 $1 48. Rd1 Qb7 49. Bc1 Kf7 50. Nd3 Bb6 51. Nb4 Bc5
52. Bh6 $6 Rh8 $6 (52... g5 $1 53. hxg5 Kg6 {imprisons a piece.}) 53. Bc1 Rc8
54. Nd5 Nd6 55. Bg2 Nc4 56. Bf1 Nd6 57. Bg2 Bg4 $1 58. Rd3 Nc4 59. Bf3 Be6 60.
Qe2 Ra8 61. Rd1 (61. Bxh5 $5 Ra1 $1 62. Rd1 Qa7 $1 {(Andersson)} 63. Qf3 Bxd5
64. exd5 Bxf2+ $1 {favours Black.}) 61... Ra1 $1 62. Bh6 Qa7 63. Rxa1 Qxa1+ 64.
Kg2 $2 {Andersson has been waiting for a mistake a long time.} (64. Qf1 $1 Qb2
65. Qe1 {defends properly.}) 64... Bxd5 65. exd5 Qxc3 {Black has gained a pawn.
} 66. d6 $1 Qd4 $1 {Prophylaxis comes first.} (66... Bxd6 $2 67. Qe4 $1 {
allows a counteraction.}) 67. Bc6 Nxd6 68. Qa2+ Ke7 69. Qg8 $2 (69. Be3 $1 Qb4
70. Bh6 Qe1 71. Qc2 {prolongs the game.}) 69... Qxf2+ 70. Kh3 Qf5+ 71. Kh2 Qc8
72. Qg7+ Ke6 73. Bg2 Qe8 74. Qc7 Bd4 75. Bd2 Qd7 $6 (75... e4 $1 {
wins quickly (Andersson).}) 76. Bd5+ $1 Ke7 77. Qc2 Nc8 $5 78. Bb4+ Kd8 79. Bc6
Qg4 $2 (79... Qe6 $1 80. Bxb5 f5 {attacks.}) 80. Ba5+ $2 {
Torre misses his last chance.} (80. Qd3 $1 Kc7 $5 81. Qxb5 Nb6 82. Ba5 {
starts a strong counteraction.}) 80... Bb6 $1 81. Bxb6+ Nxb6 82. Bxb5 Qd4 $1
83. Qc6 ({The pointe is} 83. Qxg6 Qb2+ 84. Kg1 Qxb5 {
and Black has a technical win (Becker).}) 83... Qd2+ 84. Kg1 Nd7 85. Qa8+ Ke7
86. Qa3+ Qd6 87. Qb3 Nc5 88. Qa2 Qb6 89. Bc4 Ne4+ {
Andersson, Vaganian and Browne led.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "9"]
[White "Garcia Palermo, Carlos"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2385"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. b3 Nc6 4. Bb2 d6 5. Bb5 Bd7 6. O-O Nf6 7. Re1 Be7 8. d4
cxd4 9. Nxd4 O-O 10. Nxc6 bxc6 11. Bd3 e5 12. c4 Bg4 13. Be2 Be6 $1 (13... Bxe2
14. Qxe2 Nd7 {drew in Garcia Palermo - Panno, round 7.}) 14. Nc3 Qb8 15. Qd2
Rd8 16. Bf3 h6 17. g3 Qb6 18. Rad1 Nh7 19. Na4 Qa6 20. Qc3 Ng5 21. Bg2 Nh3+ 22.
Bxh3 ({The alternative is} 22. Kf1 $5) 22... Bxh3 23. c5 $5 dxc5 24. Qxe5 Bf8
$5 ({Or} 24... Bf6 25. Qh5 {(Najdorf)} Bxb2 26. Qxh3 Bd4) 25. Rxd8 Rxd8 26. Qh5
Be6 27. Nxc5 Qxa2 28. Qe5 $2 ({Correct is} 28. Nxe6 fxe6 29. Qe5 Qxb3 30. Kg2
Kh7 31. Rc1 {and White has enough compensation for the pawn.}) 28... Qa5 29.
Rc1 Bh3 $1 30. Nd7 $4 (30. Nb7 Qxe5 31. Bxe5 Rd3 32. Na5 Bc5 $1 33. b4 $1 Bxb4
34. Nxc6 Bc5 {favours Black.}) 30... Qd2 $1 {He gains a piece or delivers mate.
The old Najdorf won one game and scored minus one in the tournament.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "9"]
[White "Vaganian, Rafael"]
[Black "Browne, Walter"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2555"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Ne4 6. Nxe4 Bxe4 7. Bf4 c5 8. d5
exd5 9. cxd5 Be7 10. Qb3 $5 (10. e3 {
was played in Vaganian - Andersson, round five.}) 10... O-O 11. Nd2 Bg6 12. e3
d6 13. Be2 a6 $1 14. a4 Nd7 15. O-O Nf6 16. h3 b5 $2 {
He sacrifices a pawn temporarily.} ({Better is} 16... Qd7 $1 17. Rfc1 Rfb8 {
and Black prepares ..b5.}) 17. axb5 axb5 18. Bxb5 Rb8 19. Ra7 Ne4 20. Nxe4 Bxe4
21. Qc4 Bxd5 $1 {Browne regains the pawn, but he keeps an inferior position.}
22. Qxd5 Rxb5 23. b3 Re8 $6 24. Rfa1 $1 Rb6 25. Bg5 $1 Rb8 26. R1a6 h6 27. Bxe7
Rxe7 28. Rxd6 Qe8 29. Rxe7 Qxe7 30. Qxc5 Qe4 31. Rb6 Rd8 32. Rb4 Qb1+ 33. Kh2
Rd2 34. e4 Rd8 35. Qc7 Rd1 {White has a mate attack. Vaganian had defeated a
main competitor and took the sole lead.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "10"]
[White "Quinteros, Miguel"]
[Black "Garcia Palermo, Carlos"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2480"]
[BlackElo "2385"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O d5 5. d3 Nbd7 6. b3 e6 7. Bb2 Be7 8. c4
O-O 9. Nc3 c5 10. e3 Rc8 11. Qe2 dxc4 12. bxc4 $5 (12. dxc4 Ne4 13. Nxe4 Bxe4
14. Rfd1 {occurred in Polugaevsky - Bronstein, Tallinn 1965.}) 12... Qc7 13.
Ne1 a6 14. f4 Bxg2 15. Nxg2 Qc6 16. a4 Ne8 17. f5 Nc7 18. Nf4 {
White takes the initiative.} Rce8 19. fxe6 Nxe6 $2 {
Black gives up the control over the centre.} ({Correct is} 19... fxe6 $1 20.
Ne4 e5 $1) 20. Ncd5 $1 Nxf4 21. gxf4 Bf6 22. e4 Bxb2 23. Qxb2 f5 24. Qg2 $1 {
He starts an attack on the kingside.} fxe4 25. dxe4 Kh8 26. Ra3 Rb8 $6 (26...
Re6 27. Kh1 Rg6 {counters.}) 27. Rh3 $1 Qe6 28. f5 Qf7 $2 (28... Qd6 $1 29. Rf4
h6 30. Qg5 Kg8 {delivers a stubborn resistance.}) 29. Rf4 $1 Rfe8 $5 (29... Nf6
30. e5 {(Becker)} Nxd5 31. Rxh7+ $1 Kxh7 32. Qh3+ Kg8 33. Rh4 {
also wins for White.}) 30. Rxh7+ $1 Kxh7 31. Rh4+ Kg8 32. Qh3 $1 {
White has a mate attack.  Andersson won and joined the lead with Vaganian.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "11"]
[White "Torre, Eugenio"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2490"]
[BlackElo "2575"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O 6. d3 Re8 7. Bd2 Bxc3 8.
Bxc3 d5 9. cxd5 Nxd5 10. Be2 Qd6 11. O-O Ncb4 12. Qb1 Bf5 $5 (12... c5 {
was played in Smyslov - Kuzmin, Moscow 1973.}) 13. Rd1 Rad8 14. Be1 Nb6 15. a3
N4d5 16. b4 h6 17. Qa2 Be6 18. Qc2 Bd7 19. Rdc1 Ba4 20. Qc5 {
Torre has refused the offer of a draw by Smyslov.} c6 21. Qa5 $2 {
He starts a fatal adventure. Exchange would be alright.} Bb5 $1 {
The queen is imprisoned.} 22. Rc5 ({The pointe is} 22. Qxa7 Ra8 23. Qxb7 Reb8)
22... Na4 $5 (22... a6 $1 23. a4 Nxa4 24. Rxa4 b6 {wins quickly.}) 23. Rxb5 $1
cxb5 24. d4 ({Or} 24. Qxb5 Ndc3 {(Becker).}) 24... a6 25. dxe5 Qb8 $1 26. Nd4
Qxe5 27. Bf3 Nc7 28. Bxb7 Rxd4 $1 29. Rc1 Rd7 30. Bc6 Qb2 $1 {
Torre oversteps the time limit in a hopeless position.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "11"]
[White "Vaganian, Rafael"]
[Black "Qi Jingxuan"]
[Result "0-1"]
[ECO "E76"]
[WhiteElo "2555"]
[BlackElo "2200"]
[Annotator "JvR"]
[PlyCount "132"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6 6. f4 O-O 7. Nf3 a6 8. Bd3 e6
9. dxe6 Bxe6 10. f5 Bd7 11. O-O b5 $5 ({Known is} 11... Bc6) 12. fxg6 hxg6 13.
Bg5 $1 {White has an excellent game.} Be6 $5 (13... Qb6 14. Nh4 Bg4 15. Nd5 $1
Nxd5 16. Qxg4 {also favours White.}) 14. cxb5 c4 15. Bc2 axb5 16. Nd4 $1 (16.
e5 $5 Qb6+ 17. Qd4 Qxd4+ 18. Nxd4 Nh7 19. Be7 {gains an advantage (Bukic).})
16... b4 17. Nce2 $2 (17. Bxf6 $1 Bxf6 18. Nxe6 fxe6 19. Qg4 bxc3 $2 20. Qxg6+
Bg7 21. e5 $1 {wins for White.}) 17... Bg4 18. Kh1 $5 Nbd7 $1 {
Black grabs the initiative.} 19. Qd2 Qb6 20. Ng3 c3 $1 21. bxc3 bxc3 22. Qxc3
$5 Rac8 $5 23. Qd2 Nh7 $1 24. Be3 Bxd4 25. Bxd4 Rxc2 $1 26. Qxc2 Qxd4 {
He has gained a material plus.} 27. a4 Nc5 28. a5 Be6 29. Rfd1 $2 {
He should advance the passed pawn.} Qe5 30. Ra3 Ra8 31. Qd2 Ra6 32. Qb4 Nf6 33.
Re1 Kg7 34. Rf3 Ncd7 35. Ra3 Qc5 36. Rb1 Ng4 37. Qb2+ $6 {
Exchange prolongs the game.} Nde5 38. h3 Ne3 39. Rc3 N3c4 40. Qc1 Qxa5 {
The game is adjourned.} 41. Qg5 $1 Nd7 $1 ({Not} 41... Qxc3 $4 42. Nh5+ Kh7 43.
Nf6+ Kg7 44. Nh5+ {and perpetual check.}) 42. Nh5+ Kh7 $1 43. Qxa5 Rxa5 44. Nf4
Ndb6 $5 45. Rb4 Rc5 46. e5 $5 Rxe5 47. Nxe6 fxe6 48. Rcxc4 Nxc4 49. Rxc4 Kg7 {
Black has a won rook ending.} 50. Kg1 Re2 51. Rd4 d5 52. Kh2 Re3 53. Kg1 Kf6
54. Kf2 Rc3 55. Rd2 Ke5 56. Ra2 d4 57. Ra5+ Kf4 58. Ra6 Rc2+ 59. Kf1 Kf5 60.
Kg1 Rb2 61. h4 e5 62. Rd6 Rd2 63. Kh2 e4 64. Kg3 d3 65. Rd5+ Ke6 66. Rg5 e3 {
Vaganian lost the first place. Andersson drew and took the lead.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "12"]
[White "Najdorf, Miguel"]
[Black "Vaganian, Rafael"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "2525"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 {Vaganian choses an enterprising opening.} 4. Bg5
d6 5. Bxf6 exf6 6. e3 $5 ({Theory is} 6. e4) 6... a6 7. a4 b4 8. a5 Be7 9. Nbd2
f5 10. Nc4 {White seems to benefit from the weaknesses on the queenside.} Bf6
11. Be2 O-O 12. O-O Ra7 $5 13. Rb1 Re8 14. Qd2 Rb7 15. c3 Rb5 $1 {
Black has counter-play.} 16. cxb4 $5 Rxb4 $1 17. b3 Qe7 18. Bd3 g6 19. Ne1 (19.
Rfe1 $1 {prepares e4 and keeps an edge.}) 19... Nd7 20. Nc2 Rb8 21. f4 $5 Bg7
22. b4 Bb7 23. bxc5 $6 (23. Be2 $1 h5 24. Bf3 {overprotects d5.}) 23... Nxc5
24. Nb4 Rbc8 25. Rfc1 Rc7 26. Rc2 h5 27. h3 Bf6 28. Kh2 h4 {He advances slowly.
} 29. Qe2 Bg7 30. Rbc1 $6 (30. Qf3 $1 Nxd3 31. Nxd3 Rec8 32. Rbc1 {
consolidates.}) 30... Bf8 31. Qd1 $6 (31. Re1 Nxd3 32. Qxd3 Rc5 33. Nb6 {
defends d5.}) 31... Nxd3 32. Qxd3 Rc5 33. Kg1 $6 Qe4 $1 34. Qxe4 Rxe4 35. Kf2
Bxd5 36. Nxd5 Rxd5 {Black has gained a pawn.} 37. Nb6 $5 Rxa5 38. Rc8 Kg7 39.
Ra8 {Najdorf attacks desperately.} Ra2+ $1 40. Kf1 ({Or} 40. Kf3 Rb4 41. Rcc8
Rbb2) 40... Rxe3 41. Nd7 Be7 {Vaganian achieved the second place.} ({
The pointe is} 41... Be7 42. Rcc8 f6 $1 {(Becker).}) 0-1

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "12"]
[White "Panno, Oscar"]
[Black "Dzindzichashvili, Roman"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2580"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 d6 5. Bg2 e5 6. O-O e4 $5 ({Theory is} 
6... O-O) 7. Ne1 O-O 8. c4 Re8 9. d3 $5 e3 $1 {Dzindzi attacks at once.} 10. f3
$5 (10. fxe3 $1 Ng4 11. Bxg7 Nxe3 {(Becker)} 12. Qd2 Nxf1 13. Qc3 $1 Ne3 14.
Bh8 Nf5 {leads to mutual chances.}) 10... d5 11. Nc2 c5 12. cxd5 Nxd5 13. Bxg7
Kxg7 14. d4 Nb4 $1 15. Nxb4 $6 ({More active is} 15. Nba3 $1 Nxc2 16. Nxc2)
15... cxb4 16. a3 {He has to free knight b1.} Be6 17. f4 Nc6 18. d5 $1 Qf6 $1
19. Ra2 Rad8 $5 20. f5 $2 {Black gets the opportunity to gain material.} ({
Better is} 20. Qd3 $1 Nd4 $1 21. dxe6 Nf3+ 22. Bxf3 Rxd3 23. exd3 Qxe6 24. Rb2
{but Black has an advantage.}) 20... Bxd5 $1 21. Bxd5 Qe5 22. fxg6 Rxd5 23. Qe1
({Not} 23. Rxf7+ $2 Kxg6 24. Qf1 Red8 $1 {(Cvetkovic).}) 23... hxg6 24. axb4
Red8 25. Qc3 Nd4 26. Qb2 Rc8 27. Na3 ({Avoids} 27. Nc3 $2 Rxc3 28. Qxc3 Nf3+ {
(Becker).}) 27... b5 $1 {The restraint becomes horrible.} 28. Rf4 g5 29. Rf1 f5
30. Qb1 Rd6 31. Qa1 Kg6 32. Qb1 Rdc6 33. Qa1 Rc3 $1 34. Rd1 (34. Nc4 $2 bxc4 $1
35. Qxc3 Nxe2+ {costs a queen (Becker).}) 34... Nxb3 35. Qb1 Nd2 36. Qa1 f4 $6
{Terrible mistakes are made under time pressure.} (36... Qd5 $1 {
ends the game (Cvetkovic).}) 37. Nb1 Nxb1 $2 ({Correct is} 37... fxg3 $1 38.
Nxc3 Qf4 $1 39. Ra6+ Kh5 40. hxg3 Qxg3+ 41. Kh1 Qh3+ 42. Kg1 Qg4+ 43. Kh1 Rc4 {
and Black will deliver mate.}) 38. Qxb1+ Kf6 $2 (38... Kh6 $1 39. Ra6+ R8c6 40.
Rxc6+ Rxc6 41. Rd7 Rg6 42. Qf1 Qf5 43. Rxa7 Rf6 {about equalises.}) 39. Ra6+ $4
(39. Qh7 $1 {decides the game quickly.}) 39... R8c6 40. Rxa7 {Black overstepped
the time in a defendable position. Panno scored well at the end of the event.}
(40. Rxa7 Rc2 41. Qb3 Qe6 42. Qd3 Rc1 43. Qd8+ Kg6 44. Qd3+ {draws.}) 1-0

[Event "Buenos Aires"]
[Site "Clarin 1"]
[Date "1978.??.??"]
[Round "13"]
[White "Szmetan, Jorge"]
[Black "Keene, Raymond"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "2420"]
[BlackElo "2480"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1978.11.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nge7 6. Bg2 g6 7. O-O Bg7 8. Nh4
O-O 9. f4 b6 $5 10. Kh1 a5 11. e5 Ba6 12. Ndf3 Qd7 13. c3 d4 14. c4 Nf5 15. Qe2
Rad8 16. b3 Bb7 17. Bd2 Ra8 $5 {Keene has no plan, but that is alright.} 18. a3
Ra7 19. Rab1 Rfa8 20. g4 $1 Nxh4 21. Nxh4 Re8 22. Be4 Nd8 23. Nf3 Nc6 24. Qg2
a4 25. bxa4 Qc7 26. a5 Nxa5 27. Bxa5 Rxa5 28. Ng5 Bxe4 29. Nxe4 Rxa3 $4 ({
Correct is} 29... Rea8 30. Nd6 R8a6 {and White has little advantage.}) 30. Nd6
$1 Rea8 31. Nb5 Qd8 32. Nxa3 Rxa3 {White has gained an exchange.} 33. Ra1 $1
Rxa1 34. Rxa1 Qh4 35. Qf3 g5 36. Kg2 h5 37. Ra8+ Bf8 38. gxh5 gxf4 39. h3 Qe1
40. Qg4+ Kh7 {White captures the bishop.  The final standings became:
Andersson 9/13 ($5,000), Vaganian, Panno and Smyslov 81/2 ($3,166), Gheorghiu
and Browne 8 ($1,900), Najdorf and Dzindzichashvili 6 (1,500), Szmetan 51/2
($1,200), Keene, Quinteros and Qi Jingxuan 5 ($667), Garcia Palermo 41/2 ($500)
, Torre 31/2 ($500).} 1-0

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "2"]
[White "Kortschnoj, Viktor"]
[Black "Diez del Corral, Jesus"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2695"]
[BlackElo "2485"]
[Annotator "JvR"]
[PlyCount "127"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

{An international tournament of fourteen participants was organised by Konex,
the Argentinian distributor of Canon printers, in Buenos Aires from 12 until
31 vii 1979. Special guests were Korschnoj, Ljubojevic, Liberzon, Miles,
Browne and Diez del Corral. It was the second and best in a series of eight
Konex chess events.} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 g6 5. cxb5 a6 6. e3 Bg7
7. Nc3 O-O 8. a4 d6 9. Ra3 axb5 $5 10. Bxb5 Na6 11. O-O Nb4 12. Nd2 $5 Bb7 (
12... Nfxd5 $5 13. Nxd5 Nxd5 14. Bc6 Be6 15. Bxa8 Qxa8 {
counters at the cost of an exchange.}) 13. e4 e6 14. dxe6 fxe6 15. Be2 $5 d5 $1
16. exd5 exd5 17. Nb5 $5 Qb6 18. Rg3 $5 Rae8 19. b3 Re7 20. Ba3 Rfe8 21. Bf3
Ba6 22. Bxb4 $6 ({Preferable is} 22. Nb1 $1) 22... cxb4 23. Rg5 $5 Bxb5 24.
axb5 Bh6 $2 (24... Qxb5 $1 25. Nc4 $1 Qc5 $1 26. Bxd5+ $2 Kh8 $1 {
leads to a terrible pin.}) 25. Rxd5 $1 {He sacrifices the exchange.} Nxd5 26.
Bxd5+ Kh8 27. Nc4 Qc5 28. Bf3 Bg7 29. Qd6 $1 Qxd6 30. Nxd6 Rb8 $6 (30... Rd8 $1
31. Nc4 Rd3 32. b6 Bd4 33. b7 Ba7 34. Ra1 Bb8 {defends well.}) 31. b6 $1 Rxb6
$6 (31... Rd7 32. Nc4 Rd3 33. Rb1 {favours White.}) 32. Nc8 Rbe6 33. Nxe7 Rxe7
{He has gained a pawn.} 34. Rd1 Bc3 35. Kf1 Kg7 36. g3 Kf6 37. h4 h6 $6 {
Pawn g6 is weakened.} 38. Be2 Re4 39. Rd6+ Re6 40. Rd7 Re7 41. Rd8 Re6 42. Bc4
Ke7 43. Rg8 Rd6 44. f4 Bb2 45. Ke2 Bd4 46. Kf3 Bc3 47. g4 Be1 48. g5 $1 hxg5
49. hxg5 Bd2 50. Rg7+ Kf8 51. Rf7+ Ke8 52. Ra7 Kf8 53. Ke4 Bc3 54. Bd5 Ke8 55.
Ra5 Kf8 56. Kd3 Ke8 57. Ra8+ Ke7 58. Ra7+ Kf8 59. Kc4 Bd2 60. Kd4 $1 Be1 $2 (
60... Bc1 $1 61. Rb7 Bd2 62. Ke5 Ra6 {offers a stubborn resistance.}) 61. Ke5
Rb6 62. Be6 Bf2 (62... Bc3+ $1 63. Kd5 Bd2 64. f5 $1 gxf5 65. g6 Bc3 66. Rf7+
Ke8 67. g7 {also wins for White (Becker).}) 63. Rf7+ Ke8 64. Rf6 {
Kortschnoj scored the full point after a lot of hard work.} 1-0

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "3"]
[White "Liberzon, Vladimir"]
[Black "Browne, Walter"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2515"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "61"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
Qc7 9. O-O-O Nbd7 10. Qg3 h6 11. Bh4 Rg8 12. Be2 g5 {
They play a fashionable opening.} 13. fxg5 Ne5 14. Nf3 Nfd7 $6 (14... hxg5 15.
Nxg5 Ng6 {occurred in Kupreichik - Grigorian, Leningrad 1974.}) 15. Rhf1 $1 b5
16. Nxe5 $1 {White has a great advantage.} (16. a3 $5 {keeps a positional edge.
}) 16... Nxe5 17. Qf2 b4 $1 18. Na4 Bb7 19. gxh6 Bxe4 20. Rd2 Bxh4 $5 ({
The alternative is} 20... Rxg2 21. Qd4 $1 Qc6 $6 {(Becker)} 22. Nc5 $3 dxc5 23.
Qxe5 Bxh4 24. Qf4 $1 {and White wins.}) 21. Qxh4 Bh7 $6 ({Liberzon prefers} 
21... d5) 22. Qxb4 Rxg2 23. Nc3 $1 Ke7 24. Qh4+ Kf8 25. Qf6 Rg8 26. Qxe6 $1 Rg6
27. Qd5 Rb8 28. Ne4 Rxh6 29. Nxd6 Bxc2 30. Nc4 $6 Nxc4 $6 (30... Rb5 31. Qd4
Bh7 {prolongs the game.}) 31. Rxc2 $1 {Liberzon won an adventurous game.} 1-0

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "3"]
[White "Ljubojevic, Ljubomir"]
[Black "Schweber, Samuel"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2590"]
[BlackElo "2450"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. Ngf3 Bg7 5. Be2 c5 6. c3 $5 (6. O-O {
happened in Ljubojevic - Miles, Tilburg 1978.}) 6... Nc6 7. O-O d4 $5 8. Qc2
Nf6 9. a3 O-O 10. cxd4 cxd4 11. b4 Ne8 $6 ({More active is} 11... Bg4 12. b5
Ne5 $1 13. Nxe5 Bxe2 14. Re1 Rc8) 12. b5 $1 Na5 13. a4 Bg4 14. Ba3 Nc7 15. Rfe1
Rc8 $5 ({Becker prefers} 15... Ne6) 16. Qc5 $1 Bxf3 17. Bxf3 Bh6 $1 18. Nc4 Nb3
$6 {Schweber accepts the sacrifice.} (18... Ne6 $1 19. Qxa7 Ra8 20. Qb6 Nxc4
21. Qxd8 Rfxd8 22. dxc4 Bd2 $1 23. Rf1 Bc3 24. Rac1 Kf8 25. Bd1 b6 {
gains sufficient compensation for the pawn.}) 19. Qxe7 $1 Nxa1 20. Rxa1 Re8 21.
Qxd8 Rexd8 22. Na5 $5 Rd7 23. e5 {White has a positional advantage.} Ne6 24.
Bxb7 Rc3 25. Bc6 Rc7 26. Bd6 Rc8 27. Rd1 $5 Nf4 28. g3 $5 Rxd3 $5 29. Rxd3 $2
Nxd3 {Black's passed pawn has become strong.} 30. Nc4 Bf8 31. a5 Nb4 $1 32.
Bxb4 Bxb4 33. a6 Bc5 $2 (33... d3 $1 34. b6 d2 $1 35. Bf3 axb6 36. Nxd2 Rc1+ $1
37. Nf1 Ra1 {wins for Black.}) 34. Nb2 Kf8 35. Kf1 Bb6 36. Ke2 Ke7 37. Kd3 f6
38. Na4 Rb8 $2 ({Correct is} 38... Bc7 39. exf6+ Kxf6 40. b6 {(Becker)} Bxb6 $1
41. Bb7 $1 Rc3+ $1 42. Nxc3 dxc3 {drawn.}) 39. Nxb6 $2 (39. Bb7 {wins at once.}
) 39... Rxb6 40. Kxd4 g5 $5 {The game is adjourned. White has a forced victory.
} 41. f4 $1 gxf4 42. gxf4 Ke6 43. Ke4 fxe5 44. fxe5 Kf7 45. Kf5 Ke7 46. h4 Kf7
47. e6+ Ke7 48. Ke5 h5 49. Kf5 {Zugzwang arises. The rook has to move at last.}
Rb8 50. Bb7 $1 Kd6 51. b6 $1 Rf8+ 52. Kg6 axb6 53. a7 Kxe6 54. a8=Q Rxa8 55.
Bxa8 Ke7 56. Kg7 Ke6 57. Bf3 {White wins with his last pawn.} 1-0

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "3"]
[White "Miles, Anthony"]
[Black "Trois, Francisco"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2560"]
[BlackElo "2415"]
[Annotator "JvR"]
[PlyCount "135"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bf4 Bb7 5. e3 Bb4+ 6. Nfd2 {
Miles plays his favourite move.} O-O 7. a3 $5 (7. Bd3 d5 8. O-O {
was played in Miles - Andersson, Buenos Aires 1978.}) 7... Be7 8. Nc3 d5 9.
cxd5 Nxd5 10. Nxd5 Bxd5 11. Qc2 Bd6 12. Bxd6 Qxd6 $6 (12... cxd6 13. Bd3 f5 {
equalises.}) 13. Rc1 Rc8 14. Bd3 $1 h6 (14... Bxg2 $6 15. Ne4 $1 Bxe4 16. Bxe4
c6 17. Bxh7+ {favours White.}) 15. O-O Bb7 16. Bh7+ Kh8 17. Be4 Bxe4 18. Qxe4
c6 {Black has a weakling on the half-open file.} 19. Nc4 $1 Qd5 20. Qf4 Kg8 21.
Rfd1 Nd7 22. Nd6 $1 Rf8 23. e4 Qb3 24. Qd2 c5 25. d5 $6 (25. Rc3 $1 Qa4 26.
dxc5 Nxc5 27. b4 Nd7 28. Rdc1 {gains a positional advantage.}) 25... Nf6 $1 26.
Rc3 $1 Qa4 27. dxe6 fxe6 28. Qe2 Rad8 29. Rcd3 Rd7 30. b3 $1 Qc6 31. e5 Nd5 32.
g3 Re7 $6 33. Qe4 Qa8 $6 34. f4 $1 Kh8 $6 35. f5 $1 {
White utilises his opponent's passivity.} Nc7 36. f6 $2 {
He should not allow the next exchange.} (36. Qh4 $1 Rd7 37. f6 $1 {
attacks decisively.}) 36... Qxe4 37. Nxe4 gxf6 38. exf6 Ref7 39. Rd6 Ne8 $5 40.
Rxe6 Nxf6 41. Nd6 $1 Rd7 $2 (41... Rh7 $1 42. Rf1 Nd7 43. Rxf8+ Nxf8 44. Re8
Kg8 45. Nf5 h5 46. Re7 Rxe7 47. Nxe7+ {(Becker)} Kg7 $1 48. Nc8 Ne6 49. Nxa7
Nd4 50. b4 $5 c4 $1 {brings about equal chances.}) 42. Rf1 Nh7 $1 (42... Kg7 $2
43. Rexf6 $1 Rxf6 44. Ne8+ {costs a piece (Becker).}) 43. Rxf8+ Nxf8 44. Rxh6+
{White has gained a pawn.} Kg7 45. Nf5+ Kf7 46. Rd6 Rc7 47. Ne3 Ne6 48. Nd5 Rb7
49. Kf2 Nd4 {The game is adjourned.} 50. b4 $1 Nb5 51. Rf6+ Kg7 52. bxc5 bxc5
53. a4 $2 ({Correct is} 53. Ra6) 53... Nc3 $1 {White  loses his edge.} 54. Rf5
Nxa4 55. g4 c4 56. Rf4 Rb2+ 57. Kg3 Rb3+ 58. Kh4 Nb2 59. Re4 Rb7 $6 (59... Rd3
$1 60. Re5 c3 $1 61. Nxc3 Rxc3 62. Re7+ {draws.}) 60. Re6 a5 $6 61. Ra6 a4 $2 (
61... Rb5 $1 62. Ra7+ Kf8 63. Nf6 Nd3 64. g5 Nf4 65. Kg4 Nd5 {
fights for a draw.}) 62. g5 $1 Rd7 $2 63. Nf6 $5 (63. Ne3 $1 Rd4+ 64. Kh5 {
wins at once.}) 63... Rd4+ 64. Kh5 $1 Nd3 65. Ra7+ Kf8 66. g6 Nf4+ 67. Kh6 Ne6
$5 68. Rf7# {Miles won with great difficulty.} 1-0

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "4"]
[White "Emma, Jaime"]
[Black "Miles, Anthony"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2435"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "130"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. g3 e5 2. Bg2 d5 3. d3 g6 4. Nc3 $5 c6 (4... d4 $5 5. Ne4 f5 6. Nd2 {
leads to prophylactic manoeuvring.}) 5. e4 dxe4 6. dxe4 $5 ({The alternative is
} 6. Nxe4 $1 f5 7. Nc3) 6... Qxd1+ 7. Nxd1 Na6 {A new game begins.} 8. Bd2 Nf6
9. Ne3 Be6 10. Ne2 Nc5 11. Nc3 O-O-O $1 {Black takes the initiative.} 12. Nf1
$5 Be7 13. f3 Nfd7 14. Be3 Nb6 15. Nd2 Nca4 16. Nd1 Rd7 17. b3 Nc5 18. Bf1 Rhd8
19. Nf2 f6 20. a4 a5 21. Nd3 Nxd3+ 22. Bxd3 Kc7 23. Ke2 Bb4 24. Rad1 Bc3 25.
Nb1 Bd4 26. Bd2 Ra8 27. Na3 Bc5 28. Bc1 Rad8 29. Bb2 Bh3 30. Nb1 h5 31. Bc3 Ra8
32. Bd2 g5 33. Be3 Bb4 34. Nd2 Rad8 35. Nc4 Nxc4 36. Bxc4 g4 $1 37. Rxd7+ Rxd7
38. Bd3 $2 ({Correct is} 38. fxg4 Bxg4+ 39. Kf2 Rd1 40. Rxd1 Bxd1 41. Bd3 b5 $1
{(Becker)} 42. Bh6 bxa4 43. bxa4 Kd8 44. Bc1 c5 45. Ke3 {
and White continues his passive defence.}) 38... Bg2 39. Rg1 Bxf3+ {
Black gains a pawn.} 40. Kf2 Rh7 41. h4 Rd7 42. Rb1 b6 43. Rc1 Rd8 44. Rb1 Bc3
45. Rc1 Rb8 46. Rf1 Kd6 47. Bc1 Bb4 48. Ke3 Ke7 49. Kf2 b5 50. Be3 Kd6 51. Ba7
Rb7 52. Be3 Bc3 53. Bc1 bxa4 54. bxa4 Bd4+ 55. Ke1 f5 $1 56. exf5 Bg2 {
He wins an exchange.} 57. Rf2 Bxf2+ 58. Kxf2 Bd5 59. c4 Rb3 60. Ke2 Bf3+ 61.
Kd2 e4 62. Bf1 Ke5 63. Kc2 Rb4 64. Bd2 Rxa4 65. Kb3 Rb4+ $1 {
Miles manoeuvred solidly.} 0-1

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "4"]
[White "Kortschnoj, Viktor"]
[Black "Rubinetti, Jorge"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2695"]
[BlackElo "2430"]
[Annotator "JvR"]
[PlyCount "131"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7 7. Qc2 c6 8. Rd1
b6 9. b3 Bb7 10. Nc3 Rc8 11. e4 c5 12. e5 $5 ({Usual is} 12. exd5 exd5 {
(Stein - Tal, Leningrad 1971).}) 12... Ne4 $5 ({The alternative will become} 
12... Ne8 $6) 13. Nxe4 dxe4 14. Nd2 $5 (14. Ne1 b5 $1 15. Bxe4 Bxe4 16. Qxe4
bxc4 17. bxc4 cxd4 18. Rxd4 Bc5 {equalises.}) 14... cxd4 15. Bxe4 Bxe4 16. Qxe4
Nc5 17. Qe2 $5 Qc7 18. Nf3 d3 {The passed pawn becomes strong.} 19. Qe3 Rfd8
20. Bb2 Rd7 21. Rd2 Rcd8 22. Rad1 Qb7 23. Ne1 h6 24. h4 a5 25. Kh2 Qe4 $6 (
25... Qc6 $1 26. Bc1 b5 27. cxb5 Qxb5 28. Ba3 $1 Nxb3 $1 29. Rxd3 Bxa3 30. Rxb3
Bb4 31. Rxd7 Qxd7 {keeps the equality.}) 26. Qxe4 Nxe4 27. Rxd3 Rxd3 28. Rxd3
Nxf2 $1 29. Rxd8+ Bxd8 {White has a better ending.} 30. Bd4 Ng4+ 31. Kg2 Bc7
32. Nd3 h5 33. Kf3 Kf8 34. Ke4 Ke7 35. a3 Kd7 $6 (35... f6 $1 36. c5 $5 bxc5
37. Bxc5+ Kd7 38. Bd4 Kc6 {counters at the right time.}) 36. b4 axb4 37. axb4
Nh6 38. Nf4 g6 39. b5 Nf5 40. Bf2 Bd8 {The game is adjourned.} 41. Nd3 Kc7 42.
Kf4 Kc8 $6 (42... Be7 $1 43. Nb2 Bb4 $1 44. Na4 {(Liberzon)} Bd2+ $1 45. Ke4
Ba5 {defends well.}) 43. Nb4 Bc7 44. Nc6 Kd7 $2 {Black fails to control g5.} ({
Correct is} 44... f6 $1 45. Ke4 fxe5 46. Nxe5 Kd8 47. Nxg6 Nxg3+ {
and Black battles for survival.}) 45. Kg5 $1 {
The king enters the hostile position.} Ne7 46. Kf6 $1 Nxc6 47. bxc6+ Ke8 48.
Be1 $1 Bd8+ 49. Kg7 Bc7 50. Bc3 Bb8 51. Kf6 Bc7 52. Bb4 Bd8+ 53. Kg7 g5 $5 ({Or
} 53... Bc7 54. Bd6 $1) 54. hxg5 Bxg5 55. c7 Kd7 56. Kxf7 Be3 57. c8=Q+ Kxc8
58. Kxe6 Bf2 59. Kf7 Bxg3 60. e6 Bh4 61. Bc3 Bd8 62. Bf6 h4 63. Bxd8 h3 64. e7
h2 65. e8=Q h1=Q 66. Bxb6+ {
Kortschnoj, Ljubojevic and Miles started well in the tournament.} (66. Bxb6+
Kb7 67. Qe6 Qh7+ 68. Ke8 Qh8+ 69. Kd7 Qg7+ 70. Qe7 $1 {wins for White (Becker).
}) 1-0

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "8"]
[White "Bernat, Miguel"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]
[ECO "A60"]
[WhiteElo "2410"]
[BlackElo "2590"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 g6 6. Nc3 Bg7 7. Bf4 Na6 8. e4
O-O 9. Nd2 Re8 10. Be2 d6 11. O-O Nc7 12. a4 b6 13. Re1 a6 $5 {
Black plays a slow line of the Ben Oni.} 14. Qc2 Rb8 15. Nc4 Bf8 16. Bf1 $2 {
White loses his advantage.} ({Better is the aggressive} 16. Bf3 $1 b5 17. axb5
axb5 18. Nxd6 $1 Bxd6 19. e5 Bf5 20. Qd2 Ncxd5 21. Bxd5 Nxd5 22. Nxd5 {
and he has an overwhelming attack.}) 16... b5 $1 17. axb5 axb5 18. Na5 $5 Bd7
19. Nc6 $5 Bxc6 20. dxc6 {Pawn c6 becomes weak.} b4 $1 21. Na4 Ne6 22. Be3 $2 (
{Right is} 22. Qc1 $1 Qc8 $5 23. e5 $1 Nd5 24. exd6 $1 {
Great complications begin.} Nexf4 25. d7 Rxe1 26. dxc8=Q Ne2+ $1 27. Kh1 Rxc1
28. Qxb8 Rxa1 29. g3 Rxf1+ 30. Kg2 Rg1+ 31. Kh3 Rf1 32. Kg2 $1 Rg1+ {
A repetition of moves ends the line.}) 22... Qc7 23. f3 Qxc6 {
Black has gained a pawn.} 24. b3 d5 $1 25. exd5 Nxd5 26. Bf2 Bg7 27. Rad1 Nc3
28. Nxc3 Nd4 $2 {Black should capture the knight.} 29. Rxe8+ Rxe8 30. Bxd4 $2 (
30. Bb5 $1 Qxb5 31. Nxb5 Nxc2 32. Bxc5 {escapes miraculously.}) 30... cxd4 31.
Bb5 Qxc3 32. Qxc3 $2 bxc3 $1 {Ljubojevic shared the lead with Kortschnoj.} (
32... bxc3 33. Bxe8 c2 34. Rf1 d3 {wins elegantly.}) 0-1

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "8"]
[White "Quinteros, Miguel"]
[Black "Miles, Anthony"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2545"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 b5 3. Na3 $5 ({Usual is} 3. Bg2) 3... a6 4. c4 c6 {
They play a special opening.} 5. Bg2 d5 6. b3 Nbd7 7. O-O e5 8. cxd5 cxd5 9. d4
e4 10. Ne5 Bd6 11. f4 O-O ({The alternative is} 11... exf3 $1 12. exf3 O-O) 12.
Nc2 Qb6 13. Kh1 Bb7 14. Bh3 Rfd8 15. g4 Nf8 16. g5 $1 Ne8 17. Ne3 Ne6 $6 ({
Preferable is} 17... Ng6 $1 18. Nxg6 hxg6) 18. Nf5 $1 {White starts to attack.}
Bf8 19. Be3 Rac8 20. Qd2 a5 21. a3 b4 22. Rg1 $1 Rc7 $5 ({The pointe is} 22...
bxa3 $6 23. Nh6+ gxh6 24. gxh6+ {(Becker)} N6g7 25. Bxc8 Bxc8 26. hxg7 Nxg7 {
and White has an advantage.}) 23. a4 Rdc8 $6 (23... Rc3 $1 24. Nh6+ gxh6 25.
gxh6+ N6g7) 24. Qe1 $1 g6 25. Ng4 $6 (25. Nh6+ Bxh6 26. gxh6 {
charges on the kingside.}) 25... Rc3 $1 (25... gxf5 $2 26. Nf6+ Kh8 27. Qh4
Nxf6 28. gxf6 h6 29. Bxf5 {wins for White (Quinteros).}) 26. Qh4 R8c7 27. Raf1
Bc8 28. Nfh6+ Bxh6 29. Nxh6+ Kh8 $2 {The king will be caught in the corner.} (
29... Kf8 $1 {moves away from the battlefield.}) 30. Rg3 $5 N8g7 $5 31. f5 $1
Nd8 32. Bf4 Rxg3 33. Bxg3 Rc2 34. fxg6 Qxg6 35. Bxc8 Rxc8 36. Be5 e3 37. Qg4
Rc2 38. Qd7 Nde6 39. Qe8+ {Miles was out of the race for the first place.} 1-0

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "9"]
[White "Schweber, Samuel"]
[Black "Browne, Walter"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2450"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 Nb6 8. Bb5
dxe5 9. Nxe5 Bd7 10. Nc3 e6 11. O-O Be7 $5 12. Be3 O-O 13. Bd3 Nxe5 14. dxe5
Bc6 15. Qc2 g6 16. Bh6 Re8 17. Be4 Nd5 18. Rfd1 Qa5 19. Nxd5 exd5 20. Bf3 Bf8
21. Bxf8 Kxf8 22. b4 $5 Qxb4 23. Bxd5 Ba4 24. Qb1 $1 Qxb1 25. Rdxb1 Rxe5 26.
Bxb7 Rb8 27. Bf3 Rd8 28. Rb2 $6 ({Correct is} 28. h3 Rd2 29. Rb4 {and equality.
}) 28... Bd1 $1 {He threatens mate.} 29. h3 Bxf3 30. gxf3 Rd3 {
Black has an advantage.} 31. Rb3 Rd2 32. Re3 Rc5 33. a3 Rcc2 34. Rf1 Ra2 35.
Kg2 a5 36. f4 a4 37. f5 $1 gxf5 38. Rf3 f4 $6 39. Rc1 $6 (39. Rxf4 $1 Rxa3 40.
Rb1 Raa2 41. Rb7 {draws.}) 39... Rd4 40. Rc5 Kg7 41. Rb5 Kg6 42. Rb4 $2 {
White should play a waiting move.} Rxb4 43. axb4 Rb2 44. Rxf4 a3 $1 45. b5 Rxb5
46. Ra4 Rb3 47. Ra5 f5 48. h4 $2 ({Better is} 48. f3 f4 $1 49. h4) 48... Kh5
49. Rxf5+ $2 (49. Ra4 $1 Rc3 50. f3 Rc2+ 51. Kg3 a2 52. Ra6 {
defends properly (Becker).}) 49... Kxh4 {Black has two passed pawns.} 50. Rf7
h5 51. Ra7 Kg5 52. Ra5+ Kg6 53. Ra6+ Kf5 54. Ra5+ Ke4 $1 {
Black sacrifices a pawn.} 55. Ra4+ ({The crucial line is} 55. Rxh5 Kd3 56. f4
Kc2 57. Ra5 Kb2 58. f5 a2 59. f6 {(Becker)} a1=Q 60. Rxa1 Kxa1 61. f7 Rb8 {
and Walter wins.}) 55... Kd3 56. Ra5 Kc2 57. f3 {
Browne would become third in the tournament.} 0-1

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "10"]
[White "Liberzon, Vladimir"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]
[ECO "B96"]
[WhiteElo "2515"]
[BlackElo "2590"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 a6 6. Bg5 e6 7. f4 b5 {
They play the complicated Polugaevsky Variation.} 8. e5 dxe5 9. fxe5 Qc7 10.
Qe2 Nfd7 11. O-O-O Bb7 12. Nxe6 fxe6 13. Qh5+ g6 14. Qg4 Be7 $5 ({
The alternative is} 14... Qxe5 15. Bd3 Be7) 15. Bxe7 Nxe5 $1 ({Not} 15... Kxe7
$2 16. Bxb5 $1 axb5 17. Qh4+ Ke8 18. Nxb5) 16. Qg3 $6 ({Better is} 16. Bd8 $1
Nxg4 17. Bxc7 O-O 18. Re1 {(Ugrinovic) and White has a plus.}) 16... Kxe7 17.
Bxb5 $1 Rc8 $1 {Ljubojevic makes a new move.} ({The known analysis was} 17...
axb5 18. Qg5+ Kf8 $2 (18... Kf7 $1) 19. Rhf1+ {and White wins (Lepeschkin).})
18. Rhf1 $2 (18. Ba4 $5 Nf7 19. Qh4+ {
will become the improvement in Lukov - Ermenkov, Varna 1983.}) 18... axb5 19.
Qg5+ Ke8 20. Qf6 Nf3 $1 ({White expected} 20... Nf7 $2 21. Qg7 Qe7 22. Nxb5 $1
{and wins.}) 21. gxf3 b4 22. Qh8+ $2 (22. Rfe1 $1 Ra6 $1 23. Qh8+ Kf7 24. Qxh7+
Kf6 25. Qh4+ Kg7 {brings a big advantage for Black.}) 22... Kf7 23. Qxh7+ Kf6
24. Qh4+ Kg7 $1 25. Qxb4 Rxa2 $1 26. Kb1 Ra6 27. Rf2 Nc6 28. Qd6 Qa5 $1 29.
Qd7+ Kh8 30. Kc1 Rd8 {Ljubojevic and Kortschnoj kept the lead.} (30... Rd8 31.
Qxb7 Qa1+ 32. Nb1 Qxb1+ $1 33. Kxb1 Rxd1# {ends the game nicely (Becker).}) 0-1

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "11"]
[White "Miles, Anthony"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2560"]
[BlackElo "2695"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 Nge7
8. Qh5 Be6 $5 9. Ne2 Qd7 10. O-O h6 11. Re1 Bg4 12. Qh4 O-O-O 13. h3 Bf5 14.
Ng3 Bxd3 15. cxd3 Nf5 16. Nxf5 Qxf5 17. Qg3 h5 $5 18. Bf4 $5 Rde8 $6 ({
Preferable is} 18... h4 $1 19. Qg5 Qxg5 20. Bxg5 f6) 19. h4 $1 Reg8 20. Re3 (
20. Bxc7 $5 g5 $1 {brings sharp play.}) 20... Qd7 21. Rae1 b6 22. c4 Kb7 23.
Qg5 Rd8 $1 24. Re7 $1 Rhe8 $3 {Kortschnoj survives by a counter.} 25. Rxe8 $6 (
25. Rxd7 $1 Rxe1+ 26. Kh2 Rxd7 {(Becker)} 27. cxd5 $1 Nd8 28. Qxh5 {
brings a white advantage.}) 25... Rxe8 26. Rxe8 Qxe8 27. Qxd5 Qe1+ 28. Kh2 Qxf2
29. Bg3 Qxd4 30. Qxf7 Ne5 $1 {He begins a counteraction.} 31. Qxh5 Nxd3 32.
Qf3+ c6 33. Qf7+ Ka6 34. Qc7 c5 $1 35. h5 $2 ({Correct is} 35. Qc8+ Ka5 36. Qb7
a6 37. h5 Qg4 38. Qd5 {and ..Nb2?? blunders a piece.}) 35... Qg4 $1 36. Qf7 Nb2
$1 37. Bd6 $2 (37. Bb8 Nxc4 $1 38. Qxa7+ Kb5 {favours Black.}) 37... Nxc4 $2 (
37... Qh4+ 38. Kg1 Qd4+ 39. Kf1 Qxd6 {gains a piece.}) 38. Bf8 Ne5 39. Qxg7
Qh4+ $1 40. Kg1 Ng4 {
The game is adjourned. Queen and knight are going to chase the white king.} 41.
Qf7 Qh2+ $1 ({Not} 41... Qe1+ $4 42. Qf1+ {and White wins (Becker).}) 42. Kf1
Qh1+ 43. Ke2 Qxg2+ 44. Kd1 Ne3+ 45. Ke1 Nc2+ 46. Kd1 Nd4 $1 47. Qe8 Qf1+ 48.
Kd2 Nf3+ 49. Kc2 Qc4+ 50. Kb2 Qd4+ 51. Kc2 Qd2+ 52. Kb1 Qd1+ 53. Kb2 Nd4 $1 {
White cannot stop the attack. Kortschnoj and Ljubojevic shared the lead until
the end.} 0-1

[Event "Buenos Aires"]
[Site "Konex"]
[Date "1979.??.??"]
[Round "13"]
[White "Rubinetti, Jorge"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2430"]
[BlackElo "2515"]
[Annotator "JvR"]
[PlyCount "112"]
[EventDate "1979.07.??"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Be7 5. d4 d6 6. Be2 O-O 7. O-O exd4 8.
Nxd4 Re8 9. Nxc6 bxc6 10. Bf3 Bb7 $5 (10... Bd7 {
drew in Robatsch - Sarapu, Buenos Aires 1978.}) 11. Qc2 Nd7 12. Rd1 Bf6 13. b3
g6 $6 14. Bb2 Bg7 $5 {Black spoils time.} 15. Na4 Bxb2 16. Qxb2 Ne5 17. Be2 Qe7
18. c5 $1 d5 19. Qd4 {Square d4 has become a useful square for White.} Bc8 $5
20. Rac1 Bf5 21. Nc3 a5 22. a3 Nd7 23. b4 Nf8 24. g4 $6 {
He weakens the kingside.} (24. b5 $1 Ne6 25. Qe5 f6 26. Qg3 {(Becker)} Rad8 27.
bxc6 d4 {brings a plus for White.}) 24... Bd7 25. Qf4 Ne6 26. Qg3 axb4 27. axb4
Ra3 $1 {The counteraction begins.} 28. Rd3 Rea8 29. Rcd1 Qf6 30. Ne4 $1 dxe4
31. Rxd7 Qc3 32. g5 Ra1 $1 33. Bg4 Nxg5 34. Qxc7 Nf3+ 35. Bxf3 $1 exf3 36. h3
Qb2 37. Qg3 $2 ({Right is} 37. Qxc6 $1 Qe2 38. Qd5 Rxd1+ 39. Qxd1 Ra2 40. Rd8+
Kg7 41. Qd4+ {and perpetual check (Becker).}) 37... Rxd1+ 38. Rxd1 Qxb4 39.
Qxf3 Qxc5 {Black has gained a pawn.} 40. Kg2 Qg5+ 41. Kh2 Rc8 42. Qe4 Qf6 43.
Rd2 c5 44. Qb7 Qe5+ 45. Kg1 Rb8 {The game is adjourned.} 46. Qf3 c4 47. Rd7 Qe6
48. Rc7 Rc8 49. Qb7 Rxc7 50. Qxc7 h5 51. Kh2 Qe4 52. Kg3 Kg7 53. Qc8 h4+ $1 54.
Kh2 Qf5 $1 55. Qxc4 Qxf2+ 56. Kh1 Qf3+ $1 {Najdorf played well at 69.   The
final standings became: Kortschnoj and Ljubojevic 101/2/13, Browne 9, Miles
and Liberzon 71/2, Quinteros, Najdorf and Rubinetti 7, Diez del Corral 6, Emma
51/2, Trois 5, Schweber and Szmetan 3, Bernat 21/2.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "1"]
[White "Larsen, Bent"]
[Black "Andersson, Ulf"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2620"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

{The second Clarin tournament was played in Buenos Aires from 14 xi until 1
xii 1979. Nine out of the fourteen participants came from other continents.
Larsen, Spassky and Petrosian were the biggest names.} 1. g3 d5 2. Bg2 Nf6 3.
Nf3 g6 4. c4 c6 5. b3 Bg7 6. Bb2 O-O 7. O-O b6 8. d4 Bb7 9. Nbd2 Nbd7 10. Qb1
$5 e6 11. Rc1 c5 12. cxd5 Bxd5 13. dxc5 Nxc5 14. Bd4 Qe7 15. Qb2 Rfc8 16. Rc2
Nce4 17. Rac1 Rxc2 18. Rxc2 Nxd2 19. Nxd2 Bxg2 20. Kxg2 Ne8 21. Bxg7 Nxg7 22.
Qc3 {White controls an open file.} Ne8 23. Nf3 Rd8 24. Ne5 Rd5 25. b4 a5 26.
Ng4 h5 $1 27. Ne3 Rb5 28. bxa5 bxa5 $6 ({Preferable is} 28... Rxa5 $1 29. Qc6
b5) 29. Qc6 $1 Rb7 30. Nc4 $6 (30. Qa6 Ra7 31. Qb6 {keeps an edge (Larsen).})
30... Rc7 $1 31. Qa4 Qd8 $5 32. f3 (32. Qxa5 Qd4 33. Qa8 Rxc4 34. Qxe8+ Kg7 35.
Rxc4 Qxc4 36. Qa8 Qxe2 {leads to a defendable queen ending for Black.}) 32...
Nf6 $6 {Time troubles begin.} (32... Rc5 $1 {draws.}) 33. Qxa5 Nd5 34. Kf2 Qb8
35. Rb2 Qf8 36. Nd2 $6 Qg7 37. Qa3 Qd4+ $2 (37... Rc3 $1 38. Qa8+ Kh7 39. Qa4
$2 {(Larsen)} Re3 $1 {favours Black.}) 38. e3 Ra7 $2 (38... Qa7 39. Qxa7 Rxa7 {
offers more resistance.}) 39. Rb8+ Kh7 40. Rh8+ $1 Kxh8 $2 (40... Qxh8 $1 41.
Qxa7 Qb2 42. Qxf7+ Kh6 43. Ke1 {continues the game (Larsen).}) 41. Qf8+ {
White gains a queen.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "3"]
[White "Tempone, Marcelo"]
[Black "Miles, Anthony"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2200"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

{Tempone was the Argentinian world champion until 17 years of age.} 1. c4 b6 2.
d4 e6 3. d5 {White makes a hasty advance.} Nf6 4. g3 $5 Bb4+ 5. Bd2 Qe7 6. Bg2
c6 7. dxc6 dxc6 8. Nc3 O-O 9. Nf3 Ba6 10. Ne5 Rd8 11. Qc2 Bd6 12. Nxc6 $5 ({
More solid is} 12. f4 $1) 12... Nxc6 13. Bxc6 Rac8 14. Qa4 $1 Rxc6 $1 15. Qxa6
Bc5 {He takes the initiative.} 16. O-O-O $2 ({Correct is} 16. f3 $1) 16... Ng4
$5 17. Ne4 Nxf2 18. Nxf2 Bxf2 19. Bb4 $5 (19. Bc3 Rdc8 20. b3 Qg5+ 21. Kb2 b5
$1 {wins for Black (Miles).}) 19... Qg5+ 20. Kb1 Rdc8 $2 (20... Qf5+ $1 21. Ka1
Rxd1+ 22. Rxd1 h6 23. Qxa7 Qc2 24. Qd7 Rxc4 {attacks.}) 21. Qb5 $2 (21. b3 h6
22. Rd3 {hinders the charge.}) 21... Qg6+ $1 22. Ka1 Qe4 23. Rhf1 a6 $5 ({Not} 
23... Qxe2 $4 24. Qxc6 $1) 24. Qxa6 Qxe2 25. Bc3 h6 26. Qb7 R8c7 27. Qb8+ Kh7
28. Qf8 $2 (28. b3 f6 29. Qd8 b5 30. Qd2 {offers more resistance.}) 28... f6
29. Qa8 b5 $5 30. a3 b4 $1 31. Bxb4 Bd4 $1 {Black has a devastating attack.}
32. Bd2 Ra7 33. Qf8 Rc8 $5 {He choses the enjoyable finish.} 34. Qd6 ({
Miles has calculated} 34. Qxc8 Rxa3+ 35. Kb1 Qd3+ 36. Kc1 Ra1#) 34... Rd8 $1
35. Qb4 Rb8 $1 36. Rfe1 Rxb4 37. Rxe2 Rxa3+ {He delivers mate in two.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "6"]
[White "Larsen, Bent"]
[Black "Petrosian, Tigran"]
[Result "1-0"]
[ECO "A12"]
[WhiteElo "2620"]
[BlackElo "2610"]
[Annotator "JvR"]
[PlyCount "129"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

{Larsen had started by 41/2/5.} 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bg4 5. Bg2
e6 6. O-O Nbd7 7. Bb2 Be7 8. d3 O-O 9. Nbd2 Re8 10. a3 a5 11. Re1 $5 (11. h3
Bh5 12. Qc2 {drew in Ree - Jongsma, Amsterdam 1968.}) 11... Bf8 12. Ne5 Nxe5
13. Bxe5 Bd6 14. Bxd6 Qxd6 15. d4 Red8 16. c5 $1 {
White takes the initiative on the queenside.} Qc7 17. b4 e5 18. Nb3 axb4 19.
axb4 e4 20. Qd2 h6 21. Rxa8 Rxa8 22. Ra1 Rxa1+ 23. Nxa1 g5 $5 {
Tigran slightly weakens the kingside.} 24. Nc2 Kg7 25. Ne3 Be6 26. f3 Qb8 $6 (
26... b5 $1 27. cxb6 Qxb6 {equalises.}) 27. Qb2 $1 Kg8 $5 28. Qa1 Qd8 29. Qa5
$5 Qxa5 30. bxa5 {White has a better ending.} Kf8 31. Kf2 Ke7 32. fxe4 dxe4 $1
33. h3 Kd8 34. Nf1 Kc7 35. e3 Kb8 36. Nd2 Ka7 37. Bf1 {He has to control a6.}
Bd5 38. Be2 Be6 39. g4 $1 {The white knight can go to f5.} Bd5 40. Nf1 Be6 41.
Ng3 $1 Bd7 42. Bc4 Be6 43. Bf1 Bd7 44. Ke1 Be6 45. Kf2 Kb8 $2 {
Black loses two tempi.} (45... Bd7 46. Bg2 Ka6 47. Bxe4 Kxa5 48. Bf5 Be6 $1 {
defends well (Larsen).}) 46. Bg2 Bd5 47. Nf5 $1 Ng8 $2 ({The retreat by} 47...
Ka7 $1 48. Nxh6 Ka6 49. Nf5 Kxa5 50. Kg3 b6 {might lead to survival.}) 48. Nd6
Nf6 49. Kg3 Ka7 50. Bf1 $1 Be6 51. Kf2 Bd5 52. Be2 Be6 53. Ke1 Nd5 54. Kd2 Nf6
55. Bc4 $1 Kb8 (55... Bxc4 56. Nxc4 h5 57. gxh5 Nxh5 58. Nd6 {
wins quickly in the knight ending.}) 56. Bxe6 fxe6 57. Nf7 Ng8 58. Nd8 Ka7 59.
Nxe6 Ka6 60. Nd8 Nf6 61. Nf7 Ng8 62. Kc3 Kxa5 63. Nd6 Nf6 64. Nxb7+ Ka4 65. Nd8
{Larsen prevailed like Petrosian.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "6"]
[White "Najdorf, Miguel"]
[Black "Franco Ocampos, Zenon"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2515"]
[BlackElo "2360"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8.
Be3 O-O 9. Qd2 Bg4 $5 ({Theory is} 9... Qa5) 10. Rc1 cxd4 11. cxd4 Bxf3 12.
gxf3 e6 13. Bb5 $1 {
White has the better chances in the Grünfeld Indian Defence.} a6 14. Ba4 b5 15.
Bb3 Nd7 16. h4 $5 {Najdorf wants to attack.} Nf6 17. Ke2 $1 Rc8 18. Rxc8 Qxc8
19. Qa5 Qb7 20. Rd1 Re8 $5 21. Bf4 (21. a4 $1 {charges all-over-the-board.})
21... Nh5 22. Be3 Bf6 $5 23. d5 $1 Bd8 24. Qc3 exd5 25. Bxd5 Qb8 {
Black has a passive game.} 26. Bb3 Bxh4 {He ties to fight back.} 27. Qc6 Rf8 $2
(27... Kg7 $1 28. Rd7 Re7 29. Bc5 Rxd7 30. Qxd7 Kh6 $1 31. Qxf7 Bf6 {
defends well.}) 28. Rd7 $1 {Pawn f7 is going to fall.} Qe5 $5 ({The pointe is} 
28... Qe8 29. Bc5) 29. Bd4 $1 Qb8 30. Bc5 Qc8 31. Bxf7+ $1 Kh8 32. Bd4+ Ng7 33.
Bxg7+ Kxg7 34. Be8+ {Najdorf won three games in the event.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "6"]
[White "Rubinetti, Jorge"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2430"]
[BlackElo "2640"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. b3 b6 8. cxd5
Nxd5 9. Bb2 Bb7 10. Nbd2 c5 11. Rc1 Rc8 12. dxc5 Nxc5 13. a3 b5 $5 {
Black takes the initiative on the queenside.} 14. Rc2 Qb6 15. Bd4 Qa6 16. b4
Na4 17. Nb3 f6 18. Na5 Ba8 $1 19. Bh3 f5 20. Bg2 Qd6 $5 21. Be5 $6 (21. Qc1 $1
Rxc2 22. Qxc2 Nxb4 $6 23. axb4 Bxf3 24. Bxf3 Qxd4 25. Nc6 {
gains a positional edge.}) 21... Qd7 22. Rxc8 Rxc8 23. Qa1 $2 ({Correct is} 23.
Qd4 $1) 23... Ndc3 $1 {The white queen is cut off.} 24. Re1 Bd5 25. h4 $5 Bf6
26. Bxf6 gxf6 27. e3 e5 28. Nh2 {Rubinetti has been paralysed.} Kf7 29. Bh3 Ba8
$6 30. Nf1 $2 (30. Bg2 Qd2 31. Bxa8 Rxa8 32. Nf3 {offers more resistance.})
30... Qd3 $1 31. e4 $5 Bxe4 32. Re3 Qc2 33. Qe1 Rd8 34. f3 Ba8 35. f4 Be4 36.
fxe5 fxe5 37. Nc6 Rd1 38. Nxe5+ Kf6 39. Rxe4 Nxe4 40. Qe3 Kxe5 41. Qf4+ Kd4 42.
Bxf5 Nac3 43. Qe3+ Kd5 44. Qc5+ {Spassky had scored 4/6.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "7"]
[White "Spassky, Boris"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "B16"]
[WhiteElo "2640"]
[BlackElo "2620"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Be2 Bf5 7. Nf3 Qc7
8. O-O e6 9. c4 Nd7 10. d5 O-O-O {
Larsen has played this challenging line of the Caro-Kann before.} 11. Be3 $5 (
11. dxc6 bxc6 12. Be3 {occurred in Kavalek - Larsen, Solingen 1970.}) 11... c5
$1 12. b4 Rg8 13. bxc5 $5 ({Preferable is} 13. Nh4 $1 Bg6 14. Nxg6 hxg6 15. Qa4
) 13... Bxc5 14. Nd4 $2 {White should exchange.} Bh3 $1 15. g3 ({The pointe is
} 15. Bf3 $2 Ne5 {(Larsen)} 16. Be4 Ng4) 15... Bxf1 16. Bxf1 Ne5 $1 17. Rb1 Ng4
18. Bc1 $2 {Spassky wastes time.} h5 19. Rb3 h4 20. Ba3 hxg3 21. hxg3 f5 22.
Bxc5 Qxc5 23. Rb5 Qd6 24. Qb3 f4 $1 {Larsen carries out a sharp attack.} 25.
Rxb7 fxg3 $1 26. Rxa7 ({Or} 26. f3 g2 $1) 26... gxf2+ 27. Kg2 Qh2+ 28. Kf3 Qh1+
29. Kg3 Nf6+ $2 {He misses an immediate decision, but the game remains won.} (
29... Nh2+ $1 30. Kf4 Rg4+ {triumphs (Larsen).}) 30. Kxf2 Qh4+ 31. Ke2 Qe4+ 32.
Qe3 Qxe3+ 33. Kxe3 Rg3+ $1 34. Kd2 exd5 35. Nf5 Kb8 36. Rxf7 dxc4+ 37. Kc2 Rf3
38. Ng3 $5 Rf2+ $1 39. Be2 Rg8 {Larsen outclassed the rest.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "8"]
[White "Andersson, Ulf"]
[Black "Franco Ocampos, Zenon"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2560"]
[BlackElo "2360"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. dxc3 Qxd1+ 7. Kxd1 f6
8. Be3 e5 9. Nd2 Be6 10. Bc4 Bxc4 11. Nxc4 Nd7 12. b4 Nb6 $5 (12... h5 {
drew in Andersson - Mestel, Hastings 1978.}) 13. Na5 $1 O-O-O+ 14. Kc2 Be7 15.
a3 f5 16. Bxb6 axb6 17. Nc4 Bf6 $6 (17... fxe4 $1 18. Rae1 Rhf8 19. Rhf1 b5 20.
Nd2 e3 21. Rxe3 Bg5 {draws.}) 18. a4 $1 {
White takes the initiative on the queenside.} Bg7 19. Rhe1 Rhe8 20. b5 f4 $2 {
Franco ends his potential counter-play.} ({Preferable is the waiting move} 
20... Bf6) 21. a5 $1 bxa5 22. Rxa5 b6 23. Ra7 Bf6 24. Rea1 {Andersson attacks.}
Re6 25. R1a6 Rde8 26. Kb3 Bd8 27. Ra8+ Kd7 {He avoids mate.} 28. Ra2 Bf6 29.
Rd2+ Ke7 30. Ra7 Rc8 31. Rd5 Ke8 32. h3 Ke7 33. Nb2 Ke8 $6 (33... Rd6 $1 {
prepares an exchange.}) 34. Nd3 Bg7 35. c4 Bf6 $2 (35... Re7 36. Rb7 c6 {
offers more resistance.}) 36. c5 $1 bxc5 37. Nxc5 Re7 38. Ra6 Bh8 ({Or} 38...
c6 39. bxc6 Rec7 40. Nd7) 39. Kc4 Bg7 40. f3 Rb8 41. Ne6 Bf6 42. Rc6 {
Andersson won by small means.} ({The pointe is} 42. Rc6 Rb7 43. Rd8+ Kf7 44.
Rf8#) 1-0

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "8"]
[White "Larsen, Bent"]
[Black "Tempone, Marcelo"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "2620"]
[BlackElo "2200"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. Bg5 $5 ({Theory is} 6. c4
) 6... O-O 7. c4 d5 8. Bxf6 Bxf6 9. cxd5 Bxd5 $5 10. Nc3 Bb7 11. Qc2 g6 $5 ({
Preferable is} 11... Nc6 $1 12. Rad1 Nb4) 12. Rac1 Nd7 13. Rfd1 Qe7 14. Ne5 $1
Bxg2 15. Nxd7 Qxd7 16. Kxg2 Rac8 17. Ne4 Bg7 18. Qc6 $1 {
Larsen applies restraint.} Rfd8 19. e3 Qe7 $6 {Tempone reacts passively.} (
19... Qd5 $1 20. b3 a5 21. Rc2 f5 {keeps the equality.}) 20. Rc2 Rd7 21. Rdc1
Rcd8 22. Nc3 $6 (22. f4 $1 {fixes the centre.}) 22... e5 $1 23. d5 e4 $1 24.
Nb5 Rxd5 25. Nxa7 R8d6 $2 ({Better is} 25... Ra5 $1 26. Nb5 Rxa2 27. b3 Rxc2
28. Rxc2 Be5 {and Black has a plus.}) 26. Nc8 $1 Qf6 27. Qe8+ Bf8 28. Qxe4 Rd2
29. Qf4 Qxf4 30. gxf4 Rd8 31. Na7 Bc5 $6 (31... c5 $1 32. Nc6 R8d5 {
offers more resistance.}) 32. Nc6 Rxc2 33. Rxc2 Rd1 34. a3 Kg7 35. Na7 Rd5 36.
Kf3 Kf6 37. Nb5 Rd7 38. b4 Bd6 39. e4 Kg7 40. e5 {Larsen had scored 71/2/8!}
1-0

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "10"]
[White "Larsen, Bent"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2620"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. d4 e6 6. e4 Nxc3 7. bxc3 cxd4 8.
cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Be2 Nd7 12. O-O b6 13. Rfe1 $5 (13.
Rac1 {occurred in Alekhine - Grünfeld, Prague 1931.}) 13... Bb7 14. Bd3 $5 Qe7
15. a4 $1 {White has a plus.} a6 $5 ({Preferable is} 15... e5 $1 16. a5 exd4
17. Nxd4 Ne5) 16. Qe2 Rfc8 17. h3 h6 18. Rac1 Qd8 19. Nd2 Rxc1 20. Rxc1 Rc8 21.
Rb1 Nb8 $5 22. Qe3 Bc6 $6 (22... a5 $1 23. Nc4 Ba6 $1 24. Ne5 Bxd3 25. Qxd3 Nd7
$1 {equalises.}) 23. Nc4 $1 b5 $5 (23... Bxa4 24. Nxb6 Bc2 25. Bxc2 Rxc2 {
defends actively.}) 24. Ne5 f6 25. Nxc6 Nxc6 26. axb5 axb5 27. d5 $1 exd5 28.
exd5 Qxd5 29. Rxb5 Qd6 (29... Qd7 $2 30. Bf5 Qd1+ 31. Kh2 Qd6+ 32. g3 Rc7 33.
Qe8+ {wins for White (Larsen).}) 30. Qe4 $1 Ne5 $2 {
A direct charge becomes possible.} ({Correct is} 30... Kf8 $1 31. Qh7 Ne7 32.
Rb1 {and the white attack continues (Larsen).}) 31. Qh7+ Kf7 32. Bc2 $1 Rc7 33.
Bb3+ Nc4 34. Rb8 Qe5 35. Qd3 Qe1+ 36. Kh2 Qe5+ 37. g3 Qc5 38. Kg1 $1 Ke7 39.
Rg8 Kf7 40. Ra8 Ke7 41. Qd8+ {Larsen defeated another grandmaster.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "11"]
[White "Lombardy, William"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2520"]
[BlackElo "2640"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. b3 c5 7. Bb2 Nc6 8. e3
Qa5 $5 9. Qe2 Rd8 10. Nc3 Bd7 11. Rfd1 Rac8 12. d3 Be8 13. e4 dxc4 14. bxc4 Nd4
$1 15. Qd2 b6 16. e5 Nd7 17. Re1 $5 b5 $5 ({The alternative is} 17... f6 $1 18.
exf6 Bxf6 {and Black operates in the centre.}) 18. cxb5 Nb6 $1 {
Spassky takes the initiative on the queenside.} 19. Qd1 $2 ({Better is} 19.
Rad1 $1 Nc4 $1 20. dxc4 Nxf3+ 21. Bxf3 Rxd2 22. Rxd2 {
and Black has little advantage.}) 19... Nxb5 20. Ne4 Na4 $1 21. Bc1 c4 $1 {
The d-pawn falls.} 22. d4 Nxd4 23. Nd6 $2 (23. Nxd4 Rxd4 $1 24. Qxd4 Qxe1+ 25.
Bf1 c3 26. Nd6 Rd8 27. Qxa7 Bxd6 28. exd6 {offers a stubborn resistance.})
23... Bxd6 24. exd6 Rxd6 $1 25. Nxd4 Rxd4 $1 26. Qxd4 Qxe1+ 27. Bf1 Qc3 28. Be3
Qxd4 29. Bxd4 a6 30. f4 Bb5 31. Kf2 f6 32. Bh3 Kf7 33. Re1 Rc6 34. Bg2 Rc7 35.
Bh3 Bd7 36. Bf1 Bb5 37. Bh3 Rc6 38. Bg2 Rd6 39. Ke3 Nc3 40. Ra1 Ba4 41. Bf3 Nb5
42. Bc5 {Lombardy played a poor tournament.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "11"]
[White "Panno, Oscar"]
[Black "Petrosian, Tigran"]
[Result "0-1"]
[ECO "E17"]
[WhiteElo "2545"]
[BlackElo "2610"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Re1 d5 8. cxd5
exd5 9. d4 Na6 10. Be3 $5 ({Usual was} 10. Bg5) 10... c6 11. Ne5 Nd7 12. Nd3
Re8 13. Qa4 Bf6 14. Rad1 Nc7 15. Nb4 $6 ({Preferable is} 15. Nf4) 15... b5 $1
16. Qc2 Ne6 $1 17. Qc1 a5 {The white forces are beaten back.} 18. Nc2 b4 $5 19.
Na4 Ba6 20. b3 Bb5 21. Nb2 Qb6 22. Nd3 Nxd4 $5 23. Nf4 $1 {
Black seems to be in troubles by a pin.} Rxe3 $1 {Tigran gives an exchange.}
24. Nxe3 Ne6 $2 (24... Re8 $1 25. Bf3 Be7 26. Kg2 Bc5 {keeps a positional edge.
}) 25. Rxd5 $2 {Panno misses the opportunity.} (25. Nfxd5 $1 cxd5 26. Nxd5 Qa7
27. Nxf6+ Nxf6 28. Bxa8 Qxa8 29. a4 {gains a plus.}) 25... cxd5 26. Nexd5 Qa7
27. Nxf6+ Nxf6 28. Nxe6 fxe6 29. Bxa8 Qxa8 {
Petrosian has a slight material advantage.} 30. Qc5 $5 Qd5 $1 31. Qc8+ $1 {
Exchange favours Black.} Kf7 32. Qc7+ Kg6 33. Qxa5 Qd2 34. Kf1 Bc6 $1 35. f3 $2
{Hereafter, White is lost.} (35. Qe5 Bg2+ 36. Kxg2 Qxe1 37. Qxe6 Qd2 38. Qa6 {
fights for survival.}) 35... Nd5 $1 {The attack becomes strong.} 36. Qc5 Ne3+
37. Kf2 Nc2 $1 38. Rb1 Nd4 39. Qe5 Bxf3 $1 40. Qe3 Qxe2+ 41. Qxe2 Bxe2 42. Ke3
e5 43. Rb2 Kf5 {Petrosian won a fine game, but he scored minus one.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 2"]
[Date "1979.??.??"]
[Round "13"]
[White "Ivkov, Borislav"]
[Black "Quinteros, Miguel"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2525"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1979.11.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 b6 4. e3 g6 5. d4 Bg7 6. Be2 O-O 7. O-O d6 8. b3 e6
$5 ({Theory is} 8... Bb7) 9. Bb2 Qe7 10. Qc2 Bb7 11. Rad1 Nc6 12. Qb1 Rfd8 13.
Qa1 $1 {The queen goes into an ambush.} Rac8 $6 ({Better is} 13... cxd4 14.
Nxd4 Nxd4 15. Rxd4 Ne8 16. Rd2 {(Ivkov).}) 14. d5 $1 Nb4 $2 (14... Ne5 $1 15.
dxe6 fxe6 16. Nxe5 dxe5 17. f3 Ne8 {defends properly.}) 15. a3 $1 Na6 16. dxe6
$1 fxe6 17. Nb5 $1 {
He attacks the weaknesses a7 and d6 and opens the battery of a1 and b2.} Bxf3
$5 18. Bxf3 Ne8 19. Bxg7 Nxg7 20. Rd2 Nb8 21. Rfd1 Ne8 22. a4 $5 a6 $2 {
Black chases the knight to a preferable square.} (22... Nc6 $1 23. Nc3 Ne5 {
closes the diagonal a1-h8.}) 23. Nc3 a5 $5 (23... Qg7 24. Ne4 Qxa1 25. Rxa1 Nc6
26. Bg4 {leads to a positional disaster.}) 24. Nd5 $1 Qg7 ({
Ivkov has calculated} 24... exd5 25. Bxd5+ Kf8 26. Qh8#) 25. Qxg7+ Kxg7 26. Nf4
$1 (26. Nxb6 $2 Rc7 {leads to difficulties for the knight (Ivkov).}) 26... Kf7
27. Bg4 e5 $5 {Quinteros has no proper defence.} 28. Bxc8 exf4 29. Bb7 fxe3 30.
fxe3 Ke7 31. Bd5 Rd7 32. e4 Nf6 33. Rf2 Rd8 34. Rdf1 Rf8 35. g4 h6 36. h4 Nbd7
37. g5 hxg5 38. hxg5 Nxd5 39. exd5 Rh8 40. Rf7+ Kd8 41. Rg7 {The final standing
s became: Larsen 11/13, Spassky, Miles, Andersson and Najdorf 8, Gheorghiu and
Ivkov 71/2, Quinteros 61/2, Petrosian and Panno 6, Franco Ocampos and Lombardy
5, Tempone 3, Rubinetti 11/2. Larsen scored a great triumph!} 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "1"]
[White "Andersson, Ulf"]
[Black "Kavalek, Lubomir"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2590"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

{The third Clarin tournament happened in Buenos Aires from 15 x until 3 xi
1980. World champion Karpov, Larsen and Timman were main players among the
fourteen participants. The fighting spirit was great during the event.
Tournament hall was the Teatro Alvear, where hundreds of spectators could
follow each round.} 1. Nf3 g6 2. e4 d6 3. d4 Nf6 4. Nc3 Bg7 5. Be2 O-O 6. O-O
Nc6 7. Be3 Ng4 8. Bg5 h6 $5 (8... f6 {
occurred in Andersson - Planinc, Wijk aan Zee 1973.}) 9. Bh4 Nf6 $5 10. d5 Nb8
$6 {Kavalek has difficulties in finding the right squares for his knights.} ({
Better is} 10... Ne5 11. Nxe5 dxe5) 11. Nd4 c6 12. a4 Qb6 13. Nb3 a5 14. Kh1
Na6 $5 15. f4 Nb4 16. Bf3 cxd5 17. exd5 Bf5 18. Bf2 $1 Qd8 19. Nd4 Bd7 20. h3 {
Ulf has a positional plus.} Na6 $5 ({The natural move is} 20... Rc8) 21. Re1
Nc5 22. Qd2 Rc8 23. Ncb5 Ne8 $5 24. b3 e5 $6 25. dxe6 $1 {
The opening of the game helps the active white pieces.} fxe6 26. Rad1 e5 $2 (
26... Rf7 {prevents a quick loss.}) 27. fxe5 dxe5 28. Bd5+ Kh7 29. Nf3 {
White has conquered the centre.} Nf6 30. Rxe5 Nxd5 31. Rxd5 Ne4 32. Qe1 Nf6 33.
R5d2 Qe8 34. Nd6 Qxe1+ 35. Rxe1 Rb8 36. Ne5 Bc6 37. Nxc6 bxc6 38. Nc4 Nd5 39.
Bd4 Ra8 40. Re6 Rf1+ 41. Kh2 Bf8 42. Rxc6 Re8 43. Be5 {
Andersson played a fine positional game.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "3"]
[White "Browne, Walter"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "D91"]
[WhiteElo "2540"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "100"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8.
Nf3 exd5 9. b4 O-O 10. e3 Be6 11. Rc1 $5 Nd7 12. Bd3 c6 13. O-O Qe7 14. Qb3
Rfc8 15. Na4 b6 16. Rc2 c5 $1 17. bxc5 bxc5 18. Qa3 Bf8 19. Ba6 Rc7 20. Nxc5
Nxc5 21. dxc5 Rxc5 22. Qxc5 Qxc5 23. Rxc5 Bxc5 24. Rc1 Bb6 25. Rc2 {
Browne offers a draw. Timman refuses although the position is about equal.} Rd8
26. Nd4 Bxd4 27. exd4 Rb8 $1 28. Kf1 Rb4 29. Bc8 $6 {Walter becomes insecure.}
(29. Rd2 $1 Kf8 30. Ke2 {draws easily.}) 29... a5 $5 (29... Rxd4 30. Bxe6 fxe6
31. Rc8+ Kf7 32. Rc7+ Kf6 33. Rxa7 {and White survives.}) 30. Bxe6 $2 {
This might be the decisive mistake.} (30. Rc6 $1 {(Timman)} Rxd4 31. Bxe6 fxe6
32. Rxe6 Ra4 33. Rd6 d4 34. Rd7 {still draws.}) 30... fxe6 31. Rd2 Ra4 {
Black has the active rook in the ending.} 32. Ke2 Kf7 33. Ke3 Kf6 34. h4 Ra3+
35. Kf4 h6 36. f3 Rc3 37. g4 $6 ({Preferable is} 37. g3 $1 Ra3 38. Kg4 Ra4 39.
Kf4 {and it will be difficult for Black to make progress.}) 37... g5+ $1 38.
hxg5+ hxg5+ 39. Kg3 a4 40. Rb2 a3 $1 41. Rh2 Re3 42. Rd2 e5 $1 43. dxe5+ Kxe5
44. Rh2 d4 {Black utilises his passed pawn.} 45. Rh8 Kd5 46. Kf2 Kc4 47. Rh5 $5
(47. Ra8 Rc3 $1 {wins for Black.}) 47... Rc3 48. Rxg5 Rc2+ 49. Ke1 Rxa2 50. Ra5
Kd3 {Jan prevailed in the rook ending.} (50... Kd3 51. g5 Ke3 $1 {
ends the game.}) 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "3"]
[White "Hort, Vlastimil"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "2595"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "95"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. Bd3
Bxd3 9. Qxd3 e6 10. Bd2 Ngf6 11. O-O-O Be7 12. Kb1 $5 c5 13. Rhe1 O-O 14. Ne4
Rc8 15. dxc5 Nxc5 16. Nxf6+ Bxf6 17. Qxd8 Rfxd8 18. Be3 Rxd1+ 19. Rxd1 a6 20.
c3 Kf8 21. g4 Be7 22. Ne5 Ke8 23. h5 Ne4 $6 ({Preferable is} 23... Bf6 $1 24.
Bd4 Rd8) 24. f3 Nd6 25. Kc2 b5 26. b3 Bf6 $5 {Larsen counters.} 27. Rxd6 Bxe5
28. Rd3 $6 {Hort reacts passively.} ({The active} 28. Rxa6 $1 Rxc3+ 29. Kd2 Rc8
30. Kd3 {gains a plus.}) 28... Ke7 29. a4 $5 bxa4 30. bxa4 Bd6 31. Bb6 $5 e5 $1
32. Ba5 $6 {Hort makes a useless manoeuvre.} Ke6 33. Kb3 g6 34. Bb4 Bc7 $1 35.
c4 Rb8 $1 36. Ka3 $1 gxh5 37. gxh5 Rg8 $1 {
Larsen has gained a positional advantage.} 38. Bd2 f5 39. Kb4 $2 (39. Bxh6 $1
Rh8 40. Bd2 Rxh5 41. Kb3 Rh3 42. Kc2 $1 {
exchanges a pawn and consolidates the position.}) 39... Rg3 $1 40. Rb3 ({Notice
} 40. Kc3 Ba5+ 41. Kc2 Rg2 $1 {Black will exchange and win the pawn ending.})
40... f4 $1 {Pawn h5 is going to fall.} 41. Be1 $6 Rh3 $1 42. Bf2 Kd6 43. c5+
Kc6 44. Kc4 Rxh5 45. Kd3 Rh2 46. Ke2 Rh1 47. Be1 h5 48. Kf2 {
The h-pawn advances. Larsen scored well.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "4"]
[White "Karpov, Anatoly"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2725"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "115"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Be7 6. Bd3 d5 7. O-O Bf5 8. c4
$5 ({Usual is} 8. Re1 Nc6 9. c4) 8... dxc4 9. Bxc4 Nd7 10. Re1 O-O 11. Bd5 $5 (
11. Nc3 $1 Ndf6 12. Nxe4 Nxe4 13. Bd3 {keeps a plus.}) 11... Nd6 12. Nc3 Re8
13. Ne5 Nb6 14. Bb3 Bf6 15. Bf4 Be6 16. d5 $5 Bf5 17. Qf3 Bg6 18. Re2 Nd7 $5
19. Nxg6 Rxe2 20. Qxe2 hxg6 21. Bc2 Nb6 22. Rd1 Qd7 23. h3 {
Karpov has achieved little in the Russian Defence, but he goes on trying.} Re8
24. Qd3 a6 25. Bc1 Qf5 $1 26. Qxf5 gxf5 {The endgame is equal.} 27. Kf1 g6 28.
Ne2 Rd8 29. g4 $1 fxg4 30. hxg4 Ndc4 31. b3 Ne5 $6 ({
More accurate is the retreat} 31... Nd6 $1) 32. g5 $1 Bg7 33. Be4 Nc8 34. f4
Nd7 35. Bf3 Nd6 36. Be3 Nf5 37. Bf2 Bf8 38. Be4 Nd6 39. Bf3 Bg7 $2 {
The resistance breaks down.} ({Matanovic suggests} 39... Nf5 $1 {
and pawn c7 can be protected by the king's bishop.}) 40. Rc1 $1 Ne8 {
Panno has to withdraw.} 41. Ng3 $1 {Tolya wants to enter the centre.} f5 42.
Ne2 $1 Kf7 43. Nd4 $1 Bxd4 44. Bxd4 {
Two bishops battle against two knights in an open position.} Nb6 45. d6 $1 Rxd6
46. Be5 c6 $6 (46... Rd2 47. Bxb7 Rxa2 48. Bxc7 Nd7 {
fights a hopeless struggle.}) 47. Bxd6 Nxd6 48. Kf2 Nd7 49. Ke3 a5 50. Be2 Ke7
51. Bc4 Ne4 52. Rh1 Nf8 53. a4 Nd6 54. Kd4 b6 55. Rh8 Ne8 56. Rg8 Nc7 57. Rg7+
Kd6 58. Ke3 $1 {
White threatens Bf7. Karpov has completed his strategy of restraint.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "4"]
[White "Larsen, Bent"]
[Black "Browne, Walter"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2585"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. Nc3 e6 6. O-O Nge7 7. d3 O-O 8. Bf4
d5 9. cxd5 Nxd5 10. Nxd5 exd5 11. Qd2 Bg4 $5 ({Theory is} 11... Re8) 12. h3
Bxf3 13. Bxf3 Re8 14. Bg2 Qd7 15. Rab1 Re6 16. Rfe1 b6 17. h4 h5 18. Bh3 f5 19.
Qd1 $5 Rae8 20. a3 Nd4 21. e3 R6e7 22. Bg5 Re5 23. b4 Kh7 24. bxc5 bxc5 25. Bg2
Ne6 26. Qc1 Nxg5 27. hxg5 Rc8 28. Re2 Qd6 29. Rc2 Re7 30. a4 Rec7 31. a5 Qe6
32. Qd1 d4 $5 {The fighting starts when the time is short.} ({Preferable is} 
32... c4 $1 {and an easy draw.}) 33. e4 $1 c4 $1 34. Rb5 Rc5 35. Rxc5 Rxc5 36.
Bh3 Qe7 $6 ({Correct is} 36... c3 $1 37. exf5 gxf5 38. Qxh5+ Kg8 {
with mutual chances.}) 37. exf5 Qxg5 38. fxg6+ Kxg6 $6 (38... Kh6 $5 39. Rxc4
Rxc4 40. dxc4 h4 $1 {defends well.}) 39. dxc4 Rxa5 40. Re2 Ra6 $2 {
The fatal mistake happens before the time control.} (40... Bf6 $1 41. Bg2 Qg4
42. Qd3+ Kh6 {puts the black pieces on the right places.}) 41. Qd3+ Kh6 42. c5
Rg6 ({Or} 42... Ra1+ 43. Bf1 $1 Bf6 44. c6 {(Larsen).}) 43. Bf5 Rf6 44. Re5 h4
45. g4 Rf8 46. Rd5 Qf4 47. Rd7 $1 Qc1+ 48. Kg2 Rf6 49. Qh3 $1 {
Larsen breaks the resistance.} ({The pointe is} 49. Qh3 Qg5 50. f4 $1) 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "5"]
[White "Balashov, Yuri"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "2600"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "100"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. cxd5 exd5 8.
Bd3 Nc6 9. h3 O-O 10. O-O Be6 11. Be3 Rc8 $5 (11... a6 {
was played in Dufresne - Anderssen, Berlin 1851.}) 12. Qe2 Nb4 13. Bb1 Ne4 14.
Rc1 Nxc3 15. Rxc3 Rxc3 16. bxc3 Nc6 17. Bd3 Qc8 18. Rc1 Ba3 $5 19. Rb1 b6 20.
Qc2 h6 21. Re1 Bd6 22. Bd2 Rd8 23. Qb1 Bf8 24. Qc2 Ne7 25. Nh4 $1 Qc6 26. f4
Bd7 27. Nf3 Qc8 28. Ne5 Bf5 29. g4 $5 Bxd3 30. Qxd3 Nc6 31. f5 $5 ({
More solid is} 31. Kg2 Nxe5 32. fxe5) 31... Nxe5 32. dxe5 $5 Qc4 $1 33. Qxc4
dxc4 {Larsen has a plus in the endgame.} 34. Re2 b5 35. Be3 $6 ({Better is} 35.
Be1 Rd3 36. Kg2) 35... Rd3 $1 36. Bxa7 Rxc3 {Black has the distant passed pawn.
} 37. Kg2 Rd3 38. Be3 b4 39. h4 $5 b3 40. axb3 cxb3 41. Bc1 Bb4 42. Bb2 Kf8 {
The game is adjourned.} 43. g5 $2 {Balashov has sealed a blunder.} ({Correct is
} 43. h5 $1 {(Timman)} Bc5 44. Kh2 Bd4 45. Bxd4 Rxd4 46. Kg3 Rb4 47. Rb2 Ke7
48. Kf2 $1 Kd7 49. Rd2+ $1 Kc6 50. e6 $1 fxe6 51. fxe6 Rxg4 52. Kf3 Rg5 53. Kf4
{and White escapes.}) 43... hxg5 44. hxg5 Bc5 $1 45. e6 $5 (45. Ba1 Bd4 $1 46.
Bxd4 Rxd4 47. Kf3 Rb4 48. Rb2 Ke7 49. Ke3 g6 $1 {brings a won rook ending.})
45... fxe6 46. fxe6 Bd4 $1 47. Ba3+ Ke8 48. g6 Bf6 49. Rf2 Rd5 50. Kh3 Ra5 {
The solid Balashov lost four games in this tournament.} ({The pointe is} 50...
Ra5 51. Bb2 Bxb2 $1 ({not} 51... Ra2 $4 52. Rxf6 $1 Rxb2 {drawn}) 52. Rxb2 Rb5
{and Black wins.}) 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "6"]
[White "Larsen, Bent"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2585"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "147"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. g3 c6 3. b3 g6 4. Bb2 Bg7 5. Bg2 d5 6. Nf3 O-O 7. O-O Bg4 8. d3
Bxf3 9. Bxf3 Re8 10. Nd2 a5 11. a3 $5 Na6 12. Bg2 Qd6 13. Qc2 Rec8 14. Rac1 Qd8
15. Rfd1 $1 Nc5 $5 16. d4 {White has the initiative.} Ncd7 17. Qd3 e6 18. Rc2
Qe7 19. e3 Rd8 20. Qe2 Ne8 21. h4 $5 f5 22. Nf3 Nd6 23. Ne1 a4 $5 24. c5 Nb5 $6
({Preferable is} 24... Nf7 $1 25. b4 e5 $1) 25. b4 {Pawn a4 becomes a weakling.
} h6 26. Bf1 e5 $1 27. h5 $1 e4 $2 ({Correct is} 27... g5 $1 28. Qf3 {(Larsen)}
Rf8 $1 29. dxe5 Nc7 30. Nd3 Nxe5 31. Nxe5 Bxe5 {and Black has counter-play.})
28. hxg6 Qg5 29. Ng2 Nf8 30. Nf4 Nc7 31. Qh5 Qxh5 32. Nxh5 Nxg6 33. Rb1 $5 Ne7
34. b5 $1 cxb5 35. Bc3 Nc6 36. Bxb5 Nxb5 37. Rxb5 Ra7 38. Rcb2 Rd7 39. f3 $1
exf3 40. Rf2 Ra8 {Panno has reached the first time control. His pawns are weak.
} 41. Rxf3 Rf8 42. Nf4 $5 Bf6 43. Nd3 Bd8 44. Rb1 Rf6 $6 45. Kg2 Re6 46. Kf2 $6
(46. Nb2 $1 {gains a pawn.}) 46... Bg5 $1 47. Re1 Rf7 48. Nb2 Ne7 $1 49. Rb1 $1
{Larsen postpones the capture of pawn a4.} Ra6 50. Ke2 Rff6 51. Nd3 $1 Ra7 52.
Ne5 Re6 53. Kd3 Kg7 54. Bd2 Rea6 55. Rff1 {White has no hurry.} Bf6 56. Nd7 $1
Re6 57. Rb5 Rc6 58. Rb4 Kg6 59. Rfb1 Rc7 60. Nb6 $1 {
The knight has made a long journey and attacks a4 again.} Bg5 61. Rh1 Rc6 62.
Bc1 Re6 63. Rxa4 Rxa4 64. Nxa4 {At last one pawn is taken.} Ng8 65. Nb6 Nf6 66.
Rf1 Re8 67. a4 $1 Rd8 68. a5 Ne8 69. Bd2 Be7 70. Na4 Rd7 71. Rb1 Nf6 72. a6 $1
{White clears the way for his c-pawn.} bxa6 73. Ba5 Ra7 74. Rb8 $1 {The passed
pawn is going to queen. Panno suffered from time pressure three times due to
Larsen's fast play.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "7"]
[White "Karpov, Anatoly"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "B64"]
[WhiteElo "2725"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "120"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8.
O-O-O O-O 9. f4 h6 10. Bh4 Bd7 11. Nf3 Qa5 12. Qe1 Rfd8 13. e5 dxe5 14. fxe5
Nh7 $5 (14... Ne8 15. Bxe7 Nxe7 16. Nd5 $1 Qxe1 $5 17. Nxe7+ Kf8 18. Ng6+ fxg6
19. Rxe1 {drew in Jansa - Spassov, Polanica Zdroj 1979.}) 15. Bxe7 Nxe7 16. Bd3
(16. Nd5 $5 Nc6 17. Qxa5 Nxa5 18. Ne3 {(Timman) brings little advantage.})
16... Bc6 17. Rf1 Nf8 18. Nh4 $4 ({Correct is} 18. Nd2) 18... Nd5 $2 ({
Better is} 18... Nd7 $1 {(threatens pawn e5)} 19. Nd5 $5 Qxd5 $1 20. Bh7+ Kxh7
21. Rxd5 Nxd5 22. Rxf7 Kg8 {and Black has gained material.}) 19. Qf2 Be8 $5 (
19... Nxc3 $1 20. Qxf7+ Kh8 21. bxc3 Qxc3 22. Ng6+ Nxg6 23. Qxg6 Rxd3 24. Qxd3
Qa1+ 25. Kd2 Qxe5 {leads to an advantage for Black (Timman).}) 20. Nxd5 Rxd5
21. Kb1 Rxe5 {Black has gained a pawn.} 22. Nf3 Rd5 23. g4 Qc5 24. Qe2 Rad8 25.
Nd2 Bb5 26. Bxb5 Qxb5 27. c4 Qa6 $1 28. Rxf7 $5 Rxd2 $1 (28... Kxf7 29. Qf3+
Kg8 30. cxd5 Rxd5 {also favours Black (Timman).}) 29. Rxf8+ Kxf8 30. Rxd2 Rxd2
31. Qxd2 Qxc4 {Timman has kept his extra pawn in the queen ending.} 32. Qd8+
Kf7 33. Qd7+ Kf6 34. Qd8+ (34. Qxb7 $2 Qxg4 35. Qh1 {
brings a positional disaster.}) 34... Kg6 $1 35. h3 Qe4+ 36. Kc1 Qc6+ 37. Kb1
Qd5 $5 38. Qe8+ Kg5 $1 39. Qe7+ Kf4 40. a3 $1 Qd1+ 41. Ka2 Qd5+ 42. Ka1 Qh1+
43. Ka2 {The game is adjourned.} Qd5+ 44. Ka1 g5 $1 {
Timman has found the road to victory before the resumption.} 45. Qf6+ Kg3 46.
Qxh6 b6 $1 47. Qh7 ({Timman has analysed the long line} 47. h4 $1 gxh4 48. g5
h3 49. g6 h2 50. Qe3+ Qf3 51. Qg5+ Kf2 52. Qd2+ Qe2 53. Qf4+ Kg2 54. Qg5+ Kh3
55. Qh6+ Kg4 {(the checks are finished)} 56. Qc1 $1 Kh5 $1 57. g7 Qg4 $1 58.
Ka2 Qxg7 {and White cannot deliver a check on c5 as a result of his move 46!})
47... Qd4 $1 48. Qh6 ({The pointe is} 48. Qxa7 Kxh3 49. Qf7 Qd1+ 50. Ka2 Qd5+
51. Ka1 Kxg4) 48... Qd1+ 49. Ka2 Qd5+ 50. Ka1 a5 51. Qh7 Qd4 52. Qh6 Qd1+ 53.
Ka2 Qd5+ 54. Ka1 b5 {Jan has foreseen this position.} 55. h4 gxh4 56. g5 b4 57.
axb4 axb4 58. b3 Qe5+ 59. Ka2 Qe2+ 60. Kb1 Qe3 {
Timman had defeated the world champion in a great game.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "9"]
[White "Timman, Jan"]
[Black "Larsen, Bent"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2600"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "111"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

{Timman had blundered versus Najdorf in the previous round and needed a win
against Larsen.} 1. c4 e6 2. Nf3 Nf6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3 6. Qxc3
d6 7. e3 e5 8. b4 $5 Re8 9. Bb2 Nc6 10. Be2 Bg4 11. d3 a6 12. O-O d5 13. cxd5
Nxd5 14. Qc4 Qd7 15. Rfe1 Rad8 16. Rad1 Kh8 17. h3 Bh5 18. Qh4 Bg6 19. Nd2 $5 {
Timman manoeuvres slowly.} (19. d4 $1 e4 20. Ne5 {takes the initiative.}) 19...
Nb6 20. Ba1 Qe6 21. Nc4 Na4 22. Bf3 $6 ({More active is} 22. f4 $1 exf4 23.
exf4 f6 24. Bf3) 22... f6 $1 23. Bxc6 Qxc6 24. Rc1 Qb5 25. d4 e4 $1 26. Qf4 Rd7
27. Na5 c6 28. Qg4 Bf5 29. Qh5 Red8 30. Nb3 Be6 31. Qxb5 axb5 32. Nc5 Nxc5 33.
dxc5 $6 (33. bxc5 $1 Ra8 34. Bb2 {keeps the position closed.}) 33... Rd3 $1 {
Black controls the open file.} 34. Bb2 Rb3 $5 35. Rc2 Bc4 36. Ra1 Bd3 $5 37.
Rd2 Kg8 38. f3 exf3 39. gxf3 Re8 40. e4 $6 f5 $1 41. Re1 Bc4 $1 (41... fxe4 $2
42. Re3 $1 {(Ostojic)} Bc4 43. Rxb3 Bxb3 44. fxe4 Rxe4 45. Rd7 {
brings equal chances.}) 42. Kg2 $6 (42. Kf2 $5 fxe4 43. Rxe4 Rxe4 44. fxe4 Bd3
45. e5 Bf5 46. h4 {leads to a hard ending for White.}) 42... Bd5 $1 {
The game is adjourned. Timman experiences great problems.} 43. exd5 $5 Rxe1 44.
d6 Re8 45. Be5 Kf7 46. Bg3 Rd8 47. d7 h6 48. f4 Re3 $2 ({The critical line is} 
48... g5 $1 49. fxg5 hxg5 50. Bc7 Ke7 51. Re2+ Kxd7 52. Bxd8 Kxd8 53. Re5 Rxa3
54. Rxf5 Rb3 55. Rxg5 Rxb4 {
and Black has an extra pawn in the rook ending (Ostojic).}) 49. Bh4 Re7 50.
Bxe7 Kxe7 51. Re2+ Kxd7 52. h4 Re8 53. Rxe8 Kxe8 54. h5 Kf7 55. Kf2 Kf6 56. Kf3
$1 {White survives in the pawn ending, if he continues the king opposition.}
1/2-1/2

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "10"]
[White "Kavalek, Lubomir"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "B63"]
[WhiteElo "2600"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8.
O-O-O O-O 9. Nb3 h6 10. Bxf6 Bxf6 11. Qxd6 Bxc3 $5 ({Known is} 11... Qb6 12.
Qc5 Qc7) 12. bxc3 (12. Qxd8 $5 Bxb2+ 13. Kxb2 Rxd8 14. Rxd8+ Nxd8 {
will draw in Kuzmin - Karner, Tallinn 1985.}) 12... Qh4 $5 {
This move was suggested by Sosonko.} 13. g3 Qf6 14. Qc5 e5 15. Bb5 Nd8 $1 16.
Qe3 {White cannot take the black fortress.} Bg4 17. Rd3 Rc8 18. f3 ({Or} 18. h3
$5 Bh5 19. f3) 18... a6 $1 19. Bd7 Bxd7 20. Rxd7 a5 $5 21. Rhd1 $1 {
Capture of a pawn provokes a counter.} Qa6 22. R1d5 a4 23. Nc5 $5 (23. Nd2 $1 {
consolidates the white position.}) 23... Qf1+ 24. Kd2 ({Not} 24. Kb2 $4 a3+ $1
25. Kxa3 Qb1 $1) 24... a3 25. Nd3 Qb1 26. Nc1 Nc6 27. Qd3 Qb6 28. Rb5 $5 (28.
Qe3 Qb1 29. Qd3 Qb6 {brings a repetition of moves (Ugrinovic).}) 28... Qg1 29.
Rbxb7 Na5 $5 30. Rbc7 $5 (30. Rb4 $1 Qxh2+ 31. Ne2 {gains a plus.}) 30... Qb6
$1 31. Rxc8 Rxc8 32. Ke2 $2 {Kavalek disorganises his defence.} ({Correct is} 
32. Ne2 $1 Nc4+ 33. Ke1 Qb1+ 34. Kf2 Qh1 35. h4 {
and Black cannot strengthen his attack.}) 32... Nc4 $1 33. Nb3 {
The knight can help his king insufficiently.} Qg1 $1 34. Rd8+ Rxd8 35. Qxd8+
Kh7 36. Qd3 {White has no counter.} Qxh2+ 37. Kf1 Qh1+ 38. Kf2 Qh2+ 39. Kf1
Qh3+ 40. Kf2 Nb2 $1 41. Qe2 Qh2+ 42. Ke3 Qxg3 43. Kd2 Qg5+ 44. Ke1 Na4 45. c4
Nc3 46. Qd3 Nxa2 47. c5 Nc1 48. Qc3 a2 49. Na1 Qg2 50. Kd1 Ne2 $1 51. Qxe5 Qxf3
52. Kd2 Ng3 53. c6 Nxe4+ 54. Kc1 Qa3+ 55. Kd1 Qd6+ 56. Qxd6 Nxd6 57. Kc1 h5 $1
{Timman goes forwards with his h-pawn.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "10"]
[White "Najdorf, Miguel"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "E09"]
[WhiteElo "2510"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. Nf3 e6 2. c4 Nf6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. d4 Nbd7 7. Qc2 c6 8. Nbd2
b6 9. b3 Bb7 10. Bb2 a5 11. a3 c5 12. cxd5 exd5 13. a4 $5 Rc8 14. Rac1 Ba6 15.
Qd1 $6 {Najdorf plays passively.} Re8 16. Re1 Ne4 17. e3 cxd4 18. Nxd4 Ndc5 19.
Bf1 Bxf1 20. Rxf1 Nd3 21. Rxc8 Qxc8 22. Ba1 $5 Bg5 23. Nxe4 dxe4 24. Kg2 Bf6
25. Nb5 $5 (25. Qc2 $1 Qxc2 26. Nxc2 Bxa1 27. Rxa1 Rc8 28. Nd4 {
defends properly.}) 25... Re6 26. Bxf6 Rxf6 27. Nd4 g6 28. f3 $6 exf3+ 29. Rxf3
Rxf3 30. Nxf3 Qf5 31. Qa1 $5 {The white position is hard to protect.} Qc5 32.
Qd4 $6 Qc2+ $1 33. Kh1 Nf2+ $6 (33... h6 $1 34. Qd8+ Kh7 35. Qxb6 $5 Nf2+ 36.
Kg2 Ne4+ 37. Kh3 Qd1 $1 {wins quickly.}) 34. Kg1 Ne4 35. Kh1 Qc6 36. Kg2 h6 37.
h4 $5 Qc2+ $1 38. Kh3 Nf2+ 39. Kg2 Ne4+ 40. Kh3 Qc8+ $2 {
Larsen misses the final blow again.} ({Right is} 40... Qb1 $1 41. Ne1 Nc5 $1)
41. g4 $1 {Najdorf grabs the new chance.} Qb7 42. Kg2 $6 (42. Qd8+ $1 Kg7 43.
Qd4+ Kh7 44. Qc4 Kg8 45. Ne5 {tries to survive.}) 42... Nc5 $1 43. Qc4 $2 (43.
h5 $1 gxh5 44. gxh5 Nxb3 $6 45. Qf6 {starts a counteraction.}) 43... Qc6 $1 44.
Kg3 (44. e4 $5 Qd7 $1 {(Larsen)} 45. Kg3 Qd6+ 46. e5 Qd1 {wins for Black.})
44... Ne4+ 45. Kf4 Qxc4 46. bxc4 Nc5 47. Ke5 Nxa4 {
Bent has an extra pawn in the knight ending.} 48. Kd5 Nb2 49. Nd4 Kf8 50. g5 h5
51. Nc2 Ke7 52. Na3 Kd7 $1 53. Ke5 Nd3+ 54. Kf6 Ke8 55. e4 Kf8 56. Nb5 ({
The pointe is} 56. e5 Nf2 57. e6 Ng4#) 56... a4 57. Na3 Nf4 58. Nb5 Ng2 {
Larsen led by 81/2/10!} 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "11"]
[White "Browne, Walter"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2540"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 c5 5. d5 Ba6 6. Qc2 Qe7 7. Bg5 exd5 8. Bxf6
Qxf6 9. cxd5 g6 10. Nc3 $5 (10. e4 Bxf1 11. Kxf1 Bg7 12. Nc3 {
was played in Vaganian - Kupreichik, Ordzhonikidze 1978.}) 10... Bg7 11. e4
Bxf1 12. e5 $1 Qe7 13. Kxf1 O-O 14. Nb5 $6 (14. d6 $1 Qe6 15. Nb5 Qg4 $1 16.
Nc7 Nc6 17. Re1 {gains an edge.}) 14... a6 $6 (14... Bxe5 $1 15. Nxe5 Qxe5 16.
Re1 Qxd5 17. Nc7 Qb7 18. Nxa8 Qxa8 {slightly favours Black.}) 15. Nc7 Ra7 16.
d6 Qd8 17. Re1 Nc6 18. h4 $6 (18. Nd5 $1 {keeps a plus.}) 18... Rxc7 $1 19.
dxc7 Qxc7 {Black has lifted the restraint by a positional sacrifice.} 20. Qe4
Re8 21. h5 Nxe5 22. h6 Bh8 $5 23. Nxe5 $6 (23. Qd5 $5 d6 24. Rh4 {
develops a rook.}) 23... Qxe5 24. Qxe5 Rxe5 25. Rd1 $6 (25. Rxe5 Bxe5 26. Ke2
$1 Kf8 $1 27. b3 Ke7 28. g3 {almost equalises.}) 25... d5 $1 26. Rh3 Kf8 27. b4
$2 (27. Rb3 $1 b5 28. a4 $1 b4 29. Rc1 d4 30. f4 Rd5 31. Ke2 {
creates a defensive screen.}) 27... c4 $1 {
Black has two connected passed pawns.} 28. g4 g5 29. Rh5 c3 $1 30. Rh3 $6 {
Browne allows a 'petite combinaison'.} Re6 $1 31. Rxd5 c2 $1 {
Najdorf played well at the age of 70.} ({The pointe is} 31... c2 32. Rd8+ Re8
33. Rxe8+ Kxe8 34. Re3+ Kd7 35. Re1 Bb2 {and Black wins (Cebalo).}) 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "11"]
[White "Timman, Jan"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]
[ECO "D44"]
[WhiteElo "2600"]
[BlackElo "2590"]
[Annotator "JvR"]
[PlyCount "52"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5
9. Nxg5 Nd5 {Ljubojevic plays a doubtful line.} 10. Nxf7 {
Timman accepts the challenge.} Qxh4 11. Nxh8 Bb4 12. Rc1 Qe4+ 13. Be2 Nf4 14.
a3 $5 (14. Qd2 Nd3+ 15. Kf1 Nxc1 16. Nxe4 Bxd2 17. Nxd2 Nxa2 18. Ne4 {
gains an advantage. White won in Plachetka - Ioakimidis, Sofia 1979 and
Gheorghiu - Franco Ocampos, Esquel 1979..}) 14... Nxg2+ 15. Kf1 Ne3+ 16. fxe3
Qxh1+ 17. Kf2 Qxh2+ 18. Ke1 {Jan has an edge.} Be7 $6 ({Preferable is} 18...
Bxc3+ 19. bxc3 Nd7) 19. Kd2 $1 {He wants to develop his queen.} c5 $5 (19... a5
{(Timman) can be answered by} 20. Qf1 $1 b4 21. Qf3 $1 bxc3+ 22. bxc3 Qh4 23.
Rg1 $1 {and White has a winning attack.}) 20. Nxb5 $1 cxd4 21. Rxc4 Na6 22.
Rxd4 Bc5 23. Qf1 $1 Bxd4 24. Qf7+ Kd8 25. Nxd4 Qg2 26. Qf8+ Kd7 {
Timman refuted a wild charge.} (26... Kd7 27. Nf7 Bb7 28. Qd6+ Ke8 29. Qxe6+
Kf8 30. Nxh6 {crushes the resistance.}) 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "12"]
[White "Ljubojevic, Ljubomir"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "C87"]
[WhiteElo "2590"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Nf6 6. d4 Bd7 7. Nbd2 Be7 8. O-O
O-O 9. Re1 Kh8 {Black loses time.} 10. a3 $5 a5 $5 11. Qc2 $1 {
White threatens to win a pawn by 12.Bxc6 Bxc6 13.dxe5.} exd4 12. cxd4 d5 $6 ({
Preferable is} 12... Qc8 13. Qd3 Ne8) 13. e5 $1 Ng8 14. Nf1 Qe8 15. Bb3 Be6 16.
Ne3 Qd7 17. Ba4 $1 {The pin is reinstalled.} Rfb8 $5 18. Bb5 $1 {
He prevents ..b5.} Bf8 $5 {Larsen starts a time-consuming manoeuvre.} 19. Bd2
Nge7 20. Ng5 g6 21. Nxe6 Qxe6 22. Bc3 Bh6 $1 23. Rad1 b6 $6 (23... Rf8 $1 {
prepares ..f5 (Kovacevic).}) 24. Qa4 Rf8 25. Bd2 Nb8 $2 {
He blunders in a restricted position.} 26. Nxd5 $1 Bxd2 27. Nxc7 Qc8 28. Nxa8
Bxe1 29. Nxb6 Qb7 30. Nc4 Qe4 31. Nd6 $1 Bxf2+ 32. Kxf2 {
White has gained two pawns.} Nbc6 $4 33. Nxe4 {Larsen led by 11/2 points on
Timman at the end of the penultimate round, despite this loss.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "12"]
[White "Olafsson, Fridrik"]
[Black "Karpov, Anatoly"]
[Result "1-0"]
[ECO "A32"]
[WhiteElo "2545"]
[BlackElo "2725"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 Qc7 6. Qd3 a6 7. Bg2 Nc6 8.
Nxc6 dxc6 $5 9. O-O Be7 10. Qb3 e5 11. Be3 Nd7 12. Nc3 Nc5 13. Qc2 Bg4 14. b4
Nd7 15. b5 O-O 16. bxc6 bxc6 17. Rab1 Be6 18. Qa4 Rfc8 19. Rfc1 Nc5 20. Qc2 g6
$5 21. Ne4 Bf5 22. Bxc5 Bxc5 23. Rb3 $6 (23. g4 $1 Bxe4 24. Qxe4 {
keeps the equality.}) 23... Be7 24. Rcb1 Rab8 25. h4 a5 26. Kh2 Rb4 27. a3 Rxb3
28. Qxb3 Rd8 29. e3 Qd7 30. Qc3 Qc7 31. Rb2 Rd1 $2 {
Karpov overestimates his chances. He should have exchanged.} 32. c5 $1 Be6 $6 (
{Better is} 32... Bxe4 $5 33. Bxe4 Bf8 34. Rb6 Qd8 35. Rxc6 Qd2 36. Qxd2 Rxd2 {
and Black has counter-play for a pawn.}) 33. Rb6 $1 Bd5 $2 34. Qxa5 $2 (34. Bf3
$1 Rf1 35. Kg2 {dominates a rook.}) 34... Qd7 $2 {
Karpov goes down under time pressure.} (34... Bxe4 35. Bxe4 Qd8 $1 36. Bxc6 Qd2
$1 {starts a counteraction.}) 35. Qa8+ Kg7 36. Rb7 Qe6 37. Qe8 Bxe4 $6 (37...
Bf8 $1 {(Cebalo)} 38. Qd8 $1 h6 {(prevents Ng5)} 39. f3 $1 {wins for White.})
38. Bxe4 Qf6 39. Qxe7 Qxf2+ 40. Bg2 {
The FIDE President defeated the world champion.} 1-0

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "13"]
[White "Larsen, Bent"]
[Black "Andersson, Ulf"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2585"]
[BlackElo "2590"]
[Annotator "JvR"]
[PlyCount "138"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bh4 b6 5. e3 Bb7 6. Bd3 c5 7. O-O Be7 8. c4
cxd4 $5 9. Nxd4 d6 10. Nc3 Nbd7 11. Re1 a6 12. Bf1 Rc8 13. Rc1 g5 14. Bg3 h5
15. f4 Rg8 $5 16. fxg5 Rxg5 17. Nf3 Rg8 18. e4 Qc7 {
Andersson has a solid position, as usual.} 19. b4 Ng4 20. Rc2 $6 Nde5 21. Kh1
$6 Ng6 $6 (21... Nxc4 $1 22. Nb1 b5 23. Nbd2 Qd8 {gains a pawn.}) 22. Nd4 h4 $1
23. Bf2 Nxf2+ 24. Rxf2 Ne5 25. Qh5 Qd7 26. Be2 Rf8 $6 (26... Bg5 $1 27. Qh7 Rf8
{keeps a plus.}) 27. Ref1 $1 Kd8 28. b5 $6 (28. Rxf7 $1 {(Timman)} Rxf7 29.
Rxf7 Nxf7 30. Qxf7 Kc7 31. Nxe6+ Kb8 32. Nd5 Bxd5 33. exd5 {
brings a white plus.}) 28... axb5 29. Ndxb5 Rc5 30. Na4 Nd3 31. Nxc5 Nxf2+ 32.
Rxf2 bxc5 33. Bf3 Ba6 34. Rb2 $2 {White should remain pressure on the f-file.}
({Better is} 34. a4 $1 Bf6 35. Qh6 $1 Qe7 36. Qd2 Bxb5 37. axb5) 34... Bf6 35.
Qh6 Ke7 $1 {Black takes the initiative.} 36. Rb1 Rh8 37. Qd2 Be5 38. a4 Bb7 39.
a5 Bc6 40. a6 Ra8 {Pawn a6 has to fall.} 41. Qf2 $5 Rxa6 42. Qxh4+ Bf6 43. Qf2
Ra1 44. Rxa1 Bxa1 45. Qe2 Be5 46. g3 Qb7 47. Kg2 Qa8 48. h4 Qa1 49. Qd2 Qb1 50.
Qa5 $2 (50. Qe2 Bxb5 51. cxb5 Qb3 {leads to a great black advantage.}) 50...
Bxe4 $2 (50... Qc2+ 51. Kh3 Qf2 {ends the game.}) 51. Qc7+ Kf6 52. Qd8+ Kg7 53.
Qg5+ Bg6 $1 54. h5 Qc2+ 55. Kf1 Qf5 $1 56. Qxf5 Bxf5 {
Black has an extra pawn and positional advantages.} 57. g4 Bd3+ 58. Be2 Be4 59.
Kf2 Kh6 60. Ke3 Bg2 61. Bf3 Bf1 62. Be2 Bh3 63. Na7 Kg5 64. Nc6 Bf6 $1 65. Na5
Bd4+ 66. Kd3 Bxg4 67. Bxg4 Kxg4 68. Nb7 Kxh5 69. Nxd6 f5 {
Larsen lost his last game too, but he still won the tournament.} 0-1

[Event "Buenos Aires"]
[Site "Clarin 3"]
[Date "1980.??.??"]
[Round "13"]
[White "Timman, Jan"]
[Black "Olafsson, Fridrik"]
[Result "1-0"]
[ECO "D86"]
[WhiteElo "2600"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1980.10.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 Nc6 8.
Ne2 Qd7 $5 ({Theory is} 8... O-O) 9. Bb5 $5 O-O 10. d5 $5 {
Timman wants to punish his opponent quickly.} a6 11. Ba4 Qg4 $1 12. O-O (12.
dxc6 $5 Qxg2 13. Rg1 {(Martinovic)} Bxc3+ $1 14. Bd2 Bxd2+ 15. Qxd2 Qxe4 16.
Qf4 Qxf4 17. Nxf4 Rd8 {almost equalises.}) 12... Ne5 13. f4 Bd7 $6 ({
Preferable is} 13... Nc4 $1) 14. Bxd7 Nxd7 15. h3 Qh4 $6 16. Be3 $1 Rfd8 17.
Bf2 $5 Qh5 18. Rb1 c6 $5 19. c4 $6 (19. Rxb7 $1 cxd5 20. exd5 Rac8 $1 21. Qd3 {
grabs a pawn.}) 19... b5 20. cxb5 axb5 $4 ({Correct is} 20... cxb5 {
and White has a plus.}) 21. dxc6 Ne5 22. Nd4 $1 Nc4 ({The simple pointe is} 
22... Nxc6 23. Qxh5) 23. Qxh5 gxh5 24. Nf5 Bf8 25. Rxb5 e6 26. Ng3 h4 27. Nh5
Be7 28. Rb7 Re8 29. Rc1 Nd6 30. Rxe7 Rxe7 31. Bc5 Nc8 32. Bxe7 Nxe7 33. c7 f5
34. Rd1 Kf7 35. Rd8 Rxa2 36. c8=Q Nxc8 37. Rxc8 Ra1+ 38. Kf2 Ra2+ 39. Ke3 Ra3+
40. Kd4 Kg6 41. g4 {The final standings became: Larsen 91/2/13, Timman 9,
Ljubojevic 8, Karpov and Andersson 71/2, Hort and Najdorf 7, Balashov, Kavalek
and Olafsson 6, Quinteros 51/2, Panno 5, Browne 4, Giardelli 3. Larsen was
called the world champion of chess tournaments!} 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "1"]
[White "Timman, Jan"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "A54"]
[WhiteElo "2605"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "130"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

{The fourth Clarin tournament was played in Mar del Plata from 8 until 28 1982.
It occurred in the Hermitage Hotel. This lies close to the Provincial Casino.
Seven foreigners encountered seven Argentineans.} 1. d4 Nf6 2. c4 d6 3. Nc3 e5
4. Nf3 Nbd7 5. g3 c6 6. Bg2 Be7 7. O-O O-O 8. Qc2 Rb8 9. Rd1 $5 Qc7 10. b3 Re8
11. Bb2 Bf8 12. Ng5 $5 a6 13. Rac1 h6 14. Nge4 Nxe4 15. Nxe4 f5 16. Nc3 Nf6 17.
dxe5 dxe5 18. Na4 b6 19. Bh3 $1 f4 20. Bg2 fxg3 21. hxg3 Be6 22. c5 $5 b5 23.
Nc3 Kh8 $1 24. e3 $6 ({The pointe is} 24. Ne4 Bf5 {(Larsen).}) ({Best is} 24.
b4 $1 a5 25. a3) 24... Rbc8 25. Ne2 Qf7 26. Qd2 Bd5 27. f3 Nd7 28. e4 Be6 29.
Qe3 a5 {Pawn c5 has become a weakness.} 30. Rc2 $6 Rcd8 31. Rf1 $2 (31. Re1 $1
{(Timman)} a4 $1 {(Larsen)} 32. Nc1 {defends properly.}) 31... Bxc5 $1 32. Rxc5
Nxc5 33. Bxe5 $1 Nd3 34. Ba1 Kg8 35. Nd4 Nb4 $2 36. a3 $1 Rxd4 37. Qxd4 Nc2 38.
Qc3 Bxb3 39. Bb2 b4 40. axb4 axb4 41. Qxc6 {White has won back his material.}
Ne3 42. Rf2 $2 ({Better is} 42. Ra1 $1 Nxg2 43. Kxg2) 42... Rd8 $1 43. Qc5 Nd1
$2 (43... Rd1+ $1 44. Kh2 Be6 $1 {attacks decisively.}) 44. Re2 Bc4 45. Rc2
Nxb2 $1 46. Rxb2 b3 47. f4 Kh8 48. Kh2 $2 Rd3 $2 (48... Ra8 $1 49. Rd2 Ra2 {
wins for Black.}) 49. Qc8+ Kh7 50. Bh3 $6 (50. e5 $1 {threatens Be4+.}) 50...
Rd1 $1 51. e5 $2 (51. Rg2 $1 h5 52. Qc5 $1 {offers a stubborn resistance.})
51... Bd5 $1 52. Bg2 Bxg2 53. Kxg2 Qd5+ 54. Kh3 Rh1+ 55. Kg4 Qd1+ 56. Kf5 Qd3+
57. Ke6 Ra1 58. Qb7 Ra3 59. Rh2 Ra6+ 60. Ke7 Qc4 61. g4 Qe6+ 62. Kd8 Ra4 63.
Rd2 Rxf4 64. Qd5 Rf8+ 65. Kc7 Rf7+ {Larsen met his second wife during this
tournament. He would settle in Buenos Aires.} 0-1

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "2"]
[White "Seirawan, Yasser"]
[Black "Giardelli, Sergio"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2575"]
[BlackElo "2460"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. g3 c5 2. Bg2 g6 3. c4 Bg7 4. Nc3 Nc6 5. a3 d6 6. e3 Nh6 {
Seirawan plays his favourite line.} 7. Nge2 Nf5 8. b4 $5 ({He has done} 8. Rb1
{in previous games.}) 8... h5 $5 ({The pointe is} 8... cxb4 9. axb4 Nxb4 10.
Qa4+ Nc6 11. Bxc6+ bxc6 12. Qxc6+ Bd7 13. Qa6 {and the chances are about equal.
}) 9. Rb1 Ne5 10. Qc2 Rb8 11. f4 $1 Nxc4 12. bxc5 O-O (12... dxc5 $4 13. Qa4+ {
costs a piece.}) 13. e4 Nh6 14. d3 Na5 15. cxd6 Qxd6 16. Nb5 $5 Qd7 $6 {
He should protect a7.} ({Preferable is} 16... Qb6 $1 17. Nbd4 Qa6) 17. Nxa7 $1
Rd8 18. d4 Bxd4 19. Nxd4 Qxd4 {Black has regained the pawn.} 20. Nb5 Qc4 21.
Qxc4 Nxc4 22. Rb4 $1 {White has a positional advantage.} Bd7 23. Nc7 Na5 24.
Nd5 Nc6 25. Rb6 Ng4 26. h3 Nf6 27. O-O $5 ({Even better is} 27. Nxf6+ $1 exf6
28. Bb2) 27... Nxd5 28. exd5 Na5 29. Re1 e6 30. g4 $5 hxg4 31. hxg4 exd5 32.
Bxd5 Bc6 33. Bxc6 Nxc6 $2 {Black allows a mating attack.} (33... bxc6 $1 34.
Be3 Nb3 35. Rxc6 $6 Nd4 36. Bxd4 Rxd4 {equalises.}) 34. Bb2 $1 Rd7 35. Bf6 $1
Rd6 $6 (35... Nd4 36. Kf2 Ne6 37. Rh1 Ng7 {prolongs the game.}) 36. g5 $1 Re6
37. Rd1 Kf8 38. Rb3 $1 Ne7 39. Rxb7 $1 Re8 40. Rdd7 {
Black suffers from a horrible restriction.} 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "3"]
[White "Timman, Jan"]
[Black "Najdorf, Miguel"]
[Result "1-0"]
[ECO "C85"]
[WhiteElo "2605"]
[BlackElo "2515"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Bxc6 dxc6 7. d3 Nd7 8.
Nbd2 O-O 9. Nc4 Bf6 10. b4 Re8 11. Bb2 b6 $5 ({The alternative is} 11... g6)
12. Bc3 g6 13. Nfd2 c5 14. a3 cxb4 15. axb4 Nb8 $6 ({More useful is} 15... Qe7)
16. f4 $1 exf4 17. Bxf6 Qxf6 18. e5 Qc6 $2 (18... Qf5 $1 19. Qf3 Ra7 {
defends properly.}) 19. Ne4 $1 {White starts an attack in the centre.} Nd7 20.
Rxf4 $6 (20. Qf3 $1 Nxe5 21. Qxf4 Nxc4 22. Qxf7+ Kh8 23. Nf6 {ends the game.})
20... Bb7 21. Qd2 b5 22. Ne3 Qb6 23. d4 Bxe4 24. Rxe4 Rad8 25. Qf2 Nf6 26. Rf4
Nh5 27. Rxf7 Qxd4 28. Rf1 Qxe5 29. Ng4 Qg5 30. h3 c6 31. Qf3 $5 Qd2 $5 32. c3
Qg5 33. Qxc6 Rf8 34. Qe6 Rxf7 35. Qxf7+ Kh8 36. Qc7 Qd2 {
Timman began a long winning streak.} (36... Qd2 37. Qe5+ Ng7 38. Rf7 Rg8 39.
Nf6 {wins for White (Timman).}) 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "4"]
[White "Timman, Jan"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "2605"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nc3 e5 4. e3 exd4 5. exd4 Nf6 6. Bxc4 Be7 7. Nf3 O-O {
They play an ancient opening.} 8. h3 Nbd7 9. O-O Nb6 10. Bb3 c6 11. Re1 Nfd5 $5
12. Ne4 Re8 13. Bd2 Bf5 14. Ng3 Be6 15. Bc2 Nd7 16. a3 Nf8 17. Bd3 g6 $6 {
White gets an entrance.} 18. Bh6 $1 Nf6 19. Qd2 Bd5 20. Ne5 Ne6 21. Bc2 Nd7 22.
Ng4 Bg5 $1 23. Bxg5 Qxg5 24. Qb4 $6 Nf6 $6 ({More active is} 24... f5 $1 25.
Ne5 Nxe5 26. Rxe5 a5 $1 27. Qxb7 $6 Reb8 $1) 25. Re5 Qh4 26. Nxf6+ Qxf6 27. Ne4
Qd8 28. Bb3 a5 $1 29. Qc3 Bxb3 30. Qxb3 Qxd4 31. Nf6+ Kh8 32. Rae1 Reb8 $2 ({
Better is} 32... Red8 $1 33. Qxb7 Kg7) 33. R1e4 $1 {
White starts a strong attack.} Qd8 34. Rxe6 $1 fxe6 35. Qc3 Qe7 36. Nh5+ Kg8
37. Rxe6 $1 Qf7 38. Nf6+ $5 Kf8 $2 {Panno misses his last chance.} ({
Black has the unexpected defence} 38... Kh8 $1 39. Qe5 Rf8 40. Nxh7+ Kxh7 41.
Re7 Kh6 42. Rxf7 Rxf7 {and the fighting continues.}) 39. Qc5+ Kg7 40. Re7 Kxf6
41. Qe5# {Timman scored his second victory.} 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "5"]
[White "Karpov, Anatoly"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "B81"]
[WhiteElo "2720"]
[BlackElo "2605"]
[Annotator "JvR"]
[PlyCount "102"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

{The city was refreshed by a shower before the game began.} 1. e4 c5 2. Nf3 e6
3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. Rg1 Be7 8. Be3 Nc6 9. Be2 a6 10.
Qd2 Nxd4 11. Qxd4 $5 e5 12. Qd2 Be6 13. Bf3 $5 ({He improves on} 13. h4 $6 d5
$1 {(Radulov - Tukmakov, Leningrad 1973).}) ({Best is} 13. O-O-O $1 {(Larsen).}
) 13... Nd7 14. Nd5 Bg5 15. O-O-O Rc8 16. Kb1 Bxd5 $1 17. exd5 ({Or} 17. Qxd5
$6 Bxe3 18. fxe3 Rc6 {(Velickovic).}) 17... Nc5 18. Rh1 Qf6 19. Bg2 Bxe3 20.
fxe3 Qh4 21. Bf3 O-O 22. Qe1 Qd8 $1 {
A knight and a queen move to the queenside elegantly.} 23. e4 Qb6 24. Qe3 Qb5
25. h4 Na4 26. Qb3 Rc5 27. Rh3 $5 ({More active is} 27. g5 $1 Rfc8 28. Rc1 {
(Velickovic).}) 27... Rfc8 28. c3 R8c7 29. Ka1 Qd7 30. Be2 b5 {
Timman prepares ..b4.} 31. a3 $2 {Black gets another target.} ({Correct is} 31.
Rb1 $1 a5 32. Rg3 $1 {and White combines attack and defence.}) 31... a5 $1 32.
Kb1 Rb7 33. Rg3 g6 34. g5 h5 $1 35. Bf1 Rcc7 36. Qc2 b4 $1 37. axb4 axb4 38. c4
b3 $1 39. Qg2 ({The pointe is} 39. Rxb3 Rxb3 40. Qxb3 Nxb2 $1) 39... Rb4 40.
Qh3 Qxh3 41. Rxh3 Nc5 42. Kc1 (42. Re3 Ra7 43. Be2 Ra2 $5 44. Rxb3 Rxb3 45.
Kxa2 Rh3 {wins for Black.}) 42... Nxe4 43. Re3 Nc5 44. Kd2 Na4 45. Rc1 Nxb2 46.
c5 Rd4+ 47. Ke2 Rxc5 48. Rxc5 dxc5 49. Rxb3 Nc4 50. Rc3 Rxh4 51. Ke1 Re4+ {
Timman had beaten the world champion for the second time in Argentina. Jan
would have had a chance in a match against Tolya during this period.Unfortunate
ly, he did not even qualify for the candidates' matches in Rio de Janeiro 1979.
} 0-1

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Seirawan, Yasser"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2630"]
[BlackElo "2575"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng5 f5 5. Nc3 h6 6. Nh3 g5 7. Ng1 Bg7 8. h4 g4
9. e3 Nd7 $5 (9... Nf6 10. Nge2 Nh5 {
was played in Portisch - Quinteros, Nice 1974.}) 10. Nge2 h5 11. Nf4 Nf8 12.
Qa4+ $1 Qd7 13. Qb3 $5 (13. Nb5 $1 c6 14. c5 $1 dxc5 15. dxc5 Be5 16. Bd2 {
gains a plus.}) 13... Ne7 14. c5 $5 dxc5 15. dxc5 c6 $6 {
Square d6 gets less protection.} 16. Bc4 Neg6 17. Nb5 $1 Nxf4 $2 ({Correct is} 
17... Be5 $1) 18. Nd6+ $1 Kd8 19. exf4 Kc7 {
Seirawan faces a positional disaster.} 20. Be3 Qe7 21. O-O-O Kb8 22. Rd2 Bf6
23. g3 Rh7 24. Nxc8 Kxc8 25. Rhd1 Kc7 26. Qa3 Qe8 27. Rd6 Be7 28. Qa5+ Kc8 29.
Re6 $1 a6 ({The pointe is} 29... Nxe6 30. Bxe6+ Kb8 31. Rd7 {(Portisch).}) 30.
Re5 Rh6 31. Rxf5 Nd7 32. Rf7 Rf6 33. Rg7 Kb8 34. f5 Ka7 35. Rxd7 $1 Qxd7 36.
Qb6+ Kb8 37. Rg8+ Bf8 38. Rxf8+ $1 {Portisch led by 41/2/5.} ({
Lajos has planned} 38. Rxf8+ Rxf8 39. Bf4+ Kc8 40. Be6 {and mate.}) 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "6"]
[White "Andersson, Ulf"]
[Black "Garcia Palermo, Carlos"]
[Result "1-0"]
[ECO "D23"]
[WhiteElo "2635"]
[BlackElo "2470"]
[Annotator "JvR"]
[PlyCount "111"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. Qa4+ c6 5. Qxc4 Bf5 6. e3 e6 $5 7. Bd3 Bxd3
8. Qxd3 Nbd7 9. O-O Be7 10. Nc3 O-O 11. e4 Qc7 12. Bg5 Rae8 13. Rac1 h6 14. Be3
Rd8 15. Qe2 Qa5 16. Nd2 Nb6 17. a3 Na4 18. Nxa4 Qxa4 19. f3 Ne8 20. Qc4 Qxc4
21. Nxc4 {The endgame starts equal.} f5 $1 22. Na5 Rd7 23. d5 $1 exd5 24. exd5
Rxd5 25. Nxb7 f4 $6 (25... Rb5 $1 26. Nc5 Rxb2 27. Ne6 Rf7 28. Rxc6 Re2 29.
Bxa7 Rf6 30. Nd4 Rxc6 31. Nxc6 Bxa3 {continues the exchanges.}) 26. Bc5 $1 Rf7
27. Rfe1 Bxc5+ 28. Nxc5 {White blockades.} Nd6 29. Ne6 Rd2 30. Red1 $6 (30.
Rxc6 {grabs a pawn.}) 30... Rxd1+ 31. Rxd1 Nc4 $1 32. Rd8+ Kh7 33. h4 Rb7 $2 ({
The pointe is} 33... Nxb2 $2 34. Nf8+ Kg8 35. Ng6+ Kh7 36. h5) (33... g6 $1 {
prevents a mating net.}) 34. h5 $1 g5 35. hxg6+ Kxg6 36. Nxf4+ {
Andersson has gained a pawn.} Kg5 37. Nh3+ $6 (37. Rg8+ $1 Kxf4 38. Rg4+ {
leads to a won rook ending.}) 37... Kf6 38. Rd4 Nxb2 39. Rd6+ Ke5 40. Rxc6 Rb6
41. Rc7 $6 ({Better is} 41. Rc5+ $1 Kd4 42. Ra5) 41... Ra6 $1 42. Rc2 Nd3 43.
Re2+ Kf5 44. Ra2 Ra4 45. Nf2 $1 Nxf2 $6 {
Avoidance of the exchange gives practical opportunities.} 46. Kxf2 h5 47. Kg3
Kg5 48. Ra1 Kf5 49. Kh3 Kg5 50. g3 $1 Kf5 51. f4 Kg6 52. Kh4 Ra5 53. a4 Kh6 54.
Rd1 $1 Kg6 55. Rd6+ Kg7 56. Re6 $1 {Andersson showed his mastership in the
endgame. He had played his only decided game.} (56. Re6 Kf7 57. Re5 Rxa4 58.
Kxh5 {wins for White.}) 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "6"]
[White "Najdorf, Miguel"]
[Black "Braga, Fernando"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2515"]
[BlackElo "2375"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. Bg2 e5 5. d3 Nf6 6. O-O Bc5 7. e4 $5 ({Known is
} 7. b4 $1 Nxb4 8. Nxe5) 7... dxe3 $6 (7... O-O $1 {gains a plus.}) 8. Bxe3
Bxe3 9. fxe3 e4 10. dxe4 Qxd1 11. Rxd1 Ng4 $1 (11... Nxe4 $2 12. Nd4 $1 Nxd4
13. exd4 {favours White.}) 12. Re1 Be6 13. Nd4 Bxc4 $5 14. Nxc6 bxc6 15. Nd2
Ne5 16. Rec1 Be2 17. Nb3 Rb8 $6 ({Right is} 17... Bg4 $1) 18. Nd4 $1 Bg4 (18...
Rxb2 $2 19. Rab1 Rxb1 20. Rxb1 Bb5 21. a4 $1 {costs material.}) 19. b3 $6 (19.
Rc5 $1 f6 20. Nxc6 Nxc6 21. Rxc6 Rxb2 22. Rxc7 O-O 23. Rxa7 {
achieves an advantage.}) 19... Rb6 20. Rc5 f6 21. Ra5 a6 22. Rc1 Ke7 23. Bf1
Rd8 24. Kf2 Rd6 25. h3 $5 Bc8 $2 (25... Bxh3 $1 26. Bxh3 $5 Nd3+ 27. Kf3 Nxc1
28. Nf5+ Kd8 29. Nxd6 cxd6 {brings equality.}) 26. g4 $1 {
The black pieces are restricted.} g6 27. a3 Rb8 28. b4 Bb7 $5 29. Rc2 Ra8 30.
Kg3 Nf7 31. h4 Rc8 $6 32. g5 $1 Ra8 33. Bg2 fxg5 34. hxg5 Rad8 35. Rc4 R6d7 36.
Nxc6+ Bxc6 37. Rxc6 Rd6 38. Rxc7+ Kf8 39. Kf4 Kg8 40. Bh3 {Najdorf scored
minus one. Bugojno 1982 became his last super tournament. It was a wonderful
achievement at 72.} 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "7"]
[White "Franco Ocampos, Zenon"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2505"]
[BlackElo "2625"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 d6 3. Nf3 f5 4. d4 e4 5. Bg5 Nf6 6. Nd2 Be7 7. e3 O-O 8. Be2 c6
9. O-O Na6 10. f3 exf3 11. Bxf3 Nc7 12. e4 $5 (12. Qb3 {
was played in Timman - Ligterink, Lone Pine 1978.}) 12... Ne6 13. Be3 f4 14.
Bf2 Ng5 15. Be2 Qe8 16. Kh1 Qg6 17. Bh4 Qh6 18. Bf2 Bd8 19. Bg1 Bb6 20. a4 Ne6
21. e5 dxe5 22. dxe5 Nd7 23. Bxb6 axb6 24. Nf3 Ng5 25. Qd6 Qxd6 26. exd6 Nf7
27. Rfd1 Rd8 28. Rd4 Nf6 29. Rad1 Bf5 $5 30. Rxf4 Bc2 31. Rd2 Bg6 $5 32. Nh4
Rxd6 33. Rxd6 Nxd6 34. Nxg6 hxg6 {White has a slight advantage in the endgame.}
35. h4 $5 (35. Rd4 $1 Nf5 36. Rd2 {keeps a plus.}) 35... Nf5 36. Bd3 $6 ({
More active is} 36. Kh2 $1 Rd8 37. h5 $1) 36... Rd8 $1 37. Bxf5 gxf5 38. Rxf5
Rd2 {Black regains the pawn at once.} 39. Re5 $2 {White slips again.} (39. c5
$1 Rxb2 40. cxb6 Rxb6 41. Rf4 Rb3 42. Rc4 {defends properly.}) 39... Rxb2 40.
Re7 $5 Rc2 $1 41. Ne4 Kf8 42. Re6 Nxe4 $2 (42... Rxc4 $1 43. Nxf6 Rxh4+ 44. Kg1
gxf6 45. Rxf6+ Ke7 {wins for Black.}) 43. Rxe4 Ra2 44. Rf4+ $2 (44. Re3 $1 Rxa4
45. Rc3 b5 46. cxb5 Rxh4+ 47. Kg1 cxb5 48. Rc8+ Kf7 49. Rc7+ Kf6 50. Rxb7 {
leads to drawing chances for White.}) 44... Ke7 45. Re4+ Kf6 46. Rf4+ Kg6 47.
Rg4+ Kh6 48. c5 $5 bxc5 49. Rc4 Rd2 $5 50. Rxc5 Rd4 51. g3 ({The pointe is} 51.
a5 Rxh4+ 52. Kg1 Rh5 $1) 51... Rxa4 52. Kg2 Rb4 53. Re5 Rc4 54. Re6+ Kh7 55.
Kh3 b5 56. h5 b4 57. Re7 Rc5 {
Polugaevsky prevailed in an interesting rook ending.} 0-1

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "8"]
[White "Timman, Jan"]
[Black "Quinteros, Miguel"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2605"]
[BlackElo "2505"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Qc7 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 {
Quinteros plays his favourite line.} 7. Bd3 $5 dxe5 8. Nxe5 e6 9. O-O Nc6 $5
10. Nxc6 bxc6 11. Nd2 c5 12. Nf3 Bd6 $6 {Black loses  a tempo.} ({Better is} 
12... Bd7 13. Re1 Rb8) 13. dxc5 Qxc5 14. Qa4+ Bd7 15. Qg4 g6 $6 ({
Timman prefers} 15... Kf8) 16. Bh6 Bf8 $5 17. Bxf8 Kxf8 18. Rac1 Qb6 19. Ne5
Be8 $6 ({More resistance is offered by} 19... Rd8 20. Nc4 Qb7) 20. Nc4 Qd8 21.
Be4 Qf6 22. Bxd5 exd5 23. Ne3 Qxb2 $2 {Quinteros enjoys his last supper.} 24.
Nxd5 Kg7 25. Rc3 {Timman had won his sixth game in a row.} 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "9"]
[White "Portisch, Lajos"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "E41"]
[WhiteElo "2630"]
[BlackElo "2605"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

{Timman led by 1/2 point on Portisch. Their game was called in the Clarin
newspaper 'el gran duelo'.} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6
6. Nf3 Bxc3+ 7. bxc3 d6 8. e4 e5 9. h3 h6 10. Be3 b6 $5 (10... Qa5 {
was played in Portisch - Timman, Rio de Janeiro 1979.}) 11. O-O Qc7 12. d5 Ne7
13. Nh4 g5 $1 14. Qf3 Nfg8 15. Nf5 Nxf5 16. exf5 Nf6 17. g4 $5 Ba6 18. Qd1 $1
e4 19. Qa4+ Kf8 $1 20. Qxa6 (20. Bxe4 $6 Nxe4 21. Qxa6 h5 $1 {
leads to a black attack.}) 20... exd3 21. Qa4 Re8 22. Rae1 Qb7 23. Qd1 b5 $1
24. Qb1 $6 ({Better is} 24. Qxd3 $5 {(Timman)} bxc4 25. Qxc4 Qxd5 26. Qxd5 Nxd5
27. Bc1 $1 {and White is okay.}) 24... Re4 $1 25. Qxd3 Rxc4 26. Rd1 Kg7 27. f3
$2 {Portisch is crushed like the Argentinians after this blunder.} ({
The counteraction} 27. f4 $1 Kf8 28. Rf2 {brings equal chances.}) 27... Qe7 28.
f4 Re8 29. Bc1 Qe2 30. fxg5 hxg5 31. Qg3 $2 Ne4 $1 {
The knight is highly superior to the bishop.} 32. f6+ Kg6 33. Qg2 Nxc3 34. Rd2
Qxg2+ 35. Kxg2 Ne2 {Timman occupied the first place 11/2 points before
Portisch. The event was decided.} 0-1

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "10"]
[White "Timman, Jan"]
[Black "Franco Ocampos, Zenon"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2605"]
[BlackElo "2505"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Nc3 Bb7 8. Bg2
O-O 9. O-O c5 10. d5 exd5 11. Ne1 $5 ({Jan diverts from} 11. Ng5 {
(Timman-Kavalek, Montreal 1979).}) 11... Na6 12. cxd5 d6 13. Nd3 Nc7 14. e4 Nd7
15. f4 Rb8 $5 16. Qc2 Bf6 17. Rad1 Ba6 18. Rfe1 Nb5 19. Nxb5 Bxb5 20. Nf2 Re8
21. Kh1 Bd4 22. Be3 Bxe3 23. Rxe3 Qf6 24. Qd2 Rbc8 25. Ree1 h5 $6 26. Bh3 Rc7
$2 {Franco lessens his control over the central area.} (26... Rcd8 $1 27. e5
dxe5 28. Ne4 Qe7 29. Nc3 Ba6 30. Bxd7 Qxd7 31. fxe5 Bb7 {defends well.}) 27.
Kg1 $5 Qh6 $5 28. e5 $1 dxe5 29. a4 $1 Ba6 30. d6 Rb7 31. Qd5 $1 Nf6 32. Qc6
Rbb8 33. d7 Rf8 34. Qc7 {Timman had scored his eighth and last win.} 1-0

[Event "Mar del Plata"]
[Site "Clarin 4"]
[Date "1982.??.??"]
[Round "13"]
[White "Braga, Fernando"]
[Black "Karpov, Anatoly"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2375"]
[BlackElo "2720"]
[Annotator "JvR"]
[PlyCount "130"]
[EventDate "1982.02.??"]
[SourceDate "1999.07.01"]

{The world champion did not perform well in the noisy Argentinian events. This
time he played as usual.} 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nf6 6.
Bd3 Be7 7. O-O O-O 8. Qe2 cxd4 9. cxd4 Nc6 10. Rd1 Nb4 11. Nc3 Qd8 12. Bb1 b6
13. Ne5 Bb7 14. a3 Nbd5 15. Ne4 Ne8 $5 ({Known is} 15... Rc8) 16. Qc2 g6 17.
Bh6 Ng7 18. Nc6 Bxc6 19. Qxc6 Qc8 20. Qb5 $5 Rd8 21. Ng3 Qb7 22. Qe2 Bh4 23.
Be4 Qe7 24. Bxg7 $6 Kxg7 25. Nf1 Bg5 26. Ne3 $6 Nxe3 27. fxe3 {
The e-pawn will be a weakness.} Rac8 28. Bd3 Rc7 29. Bb5 e5 $1 30. dxe5 Rxd1+
31. Rxd1 Rc5 $5 32. e4 Rxe5 33. Bd3 h5 34. Qf3 h4 35. Rf1 Bf6 36. b3 b5 37. Kh1
Rc5 38. Qe2 Re5 39. Qf3 a5 40. a4 bxa4 41. bxa4 Rc5 42. Bb5 Rc3 43. Qf4 h3 $1
44. Rf3 $2 (44. g3 $1 Bg5 45. Qg4 f5 $1 {is regarded as winning by Cebalo but}
46. Qxh3 Rc2 47. g4 $1 Qxe4+ 48. Qf3 {defends well.}) 44... hxg2+ 45. Kxg2 Be5
46. Qg4 Rc2+ 47. Rf2 Rxf2+ 48. Kxf2 Bxh2 {
Karpov has gained a pawn. New manoeuvres begin.} 49. Kg2 Be5 50. Bc6 Qc5 51.
Bb5 Bd4 52. Qf4 Qc2+ 53. Kh3 Bf6 54. Kg3 Qb2 55. Kf3 Bd4 56. Qg3 Qd2 57. Kg4
Qd1+ 58. Qf3 Qg1+ 59. Qg3 Qh1 {Black shall not exchange the queens.} 60. Qf3
Qh2 61. Bc4 $5 Bf6 $5 62. Qd3 $2 (62. Qf1 $1 Qh4+ 63. Kf3 Bd4 64. Qg2 {
proceeds the struggle.}) 62... Qg2+ 63. Kf4 Qf2+ 64. Kg4 Be5 $1 65. Qf3 Qg1+ {
Final standings: Timman 91/2/13, Portisch 8, Seirawan, Karpov and Polugaevsky
71/2, Andersson 7, Larsen 61/2, Garcia Palermo and Najdorf 6, Braga and Panno
51/2, Franco Ocampos and Quinteros 5, Giardelli 41/2. The counting of the
closed international tournaments in Mar del Plata continues until thirty-five,
but the last four are not included, due to the lesser level.  The battle for
the Falkland Islands started in April 1982. When the war was lost, the junta
fell. A long period of economic depression began. It became difficult to
organize an international chess event.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 1"]
[Date "1990.??.??"]
[Round "2"]
[White "Fernandez Garcia, Jose"]
[Black "Ricardi, Pablo"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2470"]
[BlackElo "2380"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1990.04.??"]
[SourceDate "1999.07.01"]

{When no international tournaments were organised in Argentina, the wealthy
Najdorf stepped in. Fourteen men played in Buenos Aires, April 1990. They
celebrated the 80th Anniversary of the grand old man. Special guests were the
Spaniard Fernandez Garcia and the Russian Smyslov.} 1. e4 c5 2. Nf3 d6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Be7 8. f4 O-O 9. Bf3 Qc7 10. Kh1
Nc6 11. Nxc6 bxc6 12. Na4 d5 13. e5 Nd7 14. c4 Nb6 15. cxd5 $5 (15. Nxb6 Qxb6
16. f5 {was played in Aitken - Portisch, München 1958.}) 15... cxd5 16. Be3
Nxa4 17. Qxa4 Bd7 18. Qd4 Rfc8 19. Rfc1 Qa5 20. a3 h6 21. Kg1 Qb5 22. Qb6 g5 $2
{More solid is the exchange of queens.} 23. Qd4 $1 Rab8 24. b4 a5 25. fxg5 Bxg5
26. Qg4 Rc4 27. Qg3 Kh7 $2 ({Correct is} 27... Rxc1+ 28. Rxc1 axb4 29. Bxg5
hxg5 30. Qxg5+ Kf8 31. Qh6+ Kg8 $1 32. Bd1 $1 Rc8 33. Bc2 Rxc2 34. Rxc2 bxa3 {
and Black has drawing chances.}) 28. Bxg5 Rg8 29. Qf2 Rxg5 30. Be2 $1 Kg8 31.
h4 Rf5 32. Qg3+ Kf8 33. Bxc4 dxc4 34. Re1 Bc6 35. Rad1 Bd5 36. Qe3 axb4 37.
axb4 h5 38. Rf1 Rxf1+ 39. Rxf1 Qxb4 40. Qh6+ Ke8 41. Qxh5 Qe7 42. Qh8+ Kd7 43.
Qf6 Qxf6 44. exf6 e5 45. h5 Ke6 46. g4 c3 47. g5 c2 48. h6 Be4 49. Kf2 Bd3 50.
Rg1 {Fernandez utilised his chances nicely.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 1"]
[Date "1990.??.??"]
[Round "2"]
[White "Panno, Oscar"]
[Black "Morovic Fernandez, Ivan"]
[Result "0-1"]
[ECO "A35"]
[WhiteElo "2510"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1990.04.??"]
[SourceDate "1999.07.01"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 Nd4 4. e3 Nxf3+ 5. Qxf3 g6 6. Be2 $5 {
The queen becomes slightly exposed.} ({Usual is} 6. b3) 6... Bg7 7. O-O d6 8.
Rd1 Nh6 9. d4 O-O 10. Qe4 $5 cxd4 11. exd4 e6 12. Bf1 $5 {
Panno is going to play passively.} Nf5 13. b3 Rb8 14. Bb2 b6 15. d5 e5 16. Ne2
Bd7 17. a4 a6 18. Ng3 Nh4 19. Qc2 f5 20. Qd2 Bf6 21. f4 exf4 22. Bxf6 Qxf6 23.
Qxf4 g5 24. Qd4 $2 {Her majesty should be used as a defender.} ({Better is} 24.
Qf2 $1 f4 25. Ne4 Qg6 26. Re1) 24... Qxd4+ 25. Rxd4 Rbe8 $1 26. Rd3 $5 f4 $1
27. Ne2 $2 (27. Nh1 $1 f3 28. g3 f2+ 29. Nxf2 Nf3+ 30. Kh1 Nxh2 31. Kxh2 Rxf2+
32. Kg1 {offers more resistance.}) 27... f3 $1 28. gxf3 Nxf3+ 29. Kh1 h5 30.
Bg2 $5 Nxh2 $1 {Black has won a pawn and the attack continues.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 1"]
[Date "1990.??.??"]
[Round "6"]
[White "Fernandez Garcia, Jose"]
[Black "Campora, Daniel"]
[Result "1-0"]
[ECO "C95"]
[WhiteElo "2470"]
[BlackElo "2520"]
[Annotator "JvR"]
[PlyCount "137"]
[EventDate "1990.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. a4 Bf8 14. Bd3 c6 15. b3
g6 16. Ba3 Qc7 17. Qc2 Rac8 18. Rab1 $5 Qb8 19. Qa2 Bg7 20. dxe5 dxe5 21. c4
Ba8 $5 22. b4 Qd6 23. Bf1 Rb8 24. c5 Qe7 25. axb5 axb5 26. Nb3 $1 {
White takes the initiative.} Rbd8 27. Na5 Nh5 28. Rbd1 Nb8 $5 29. g3 Na6 30. h4
Qc7 $6 31. Qc2 $6 {White misses an opportunity.} ({The sacrifice by} 31. Nc4 $1
bxc4 32. Bxc4 Bb7 33. Ng5 {brings a white attack.}) 31... Bf8 32. Qc3 Bg7 33.
Bc1 Rxd1 34. Rxd1 Nf6 35. Qe1 $1 Bb7 $6 {
Black should not give up a defender of c6.} 36. Nxb7 $1 Qxb7 37. Bh3 Nb8 38.
Bb2 Nfd7 39. Nd2 Nf8 40. Nb3 Qc7 $2 (40... Ne6 $1 41. Rd6 Bf8 42. Rd3 f6 43.
Na5 Qc7 {consolidates the black position.}) 41. Rd6 f6 $2 (41... Ne6 $1 42.
Bxe6 Rxe6 43. Rxe6 fxe6 44. Qd1 Bf8 {avoids a material loss.}) 42. Qa1 $5 Kf7
43. Qa5 $1 Re7 44. Rd8 $1 Qxa5 45. Nxa5 {A knight reappears on a5.} Re8 46. Rd6
Bh6 47. Bc3 Ne6 48. Nxc6 Nxc6 49. Rxc6 {He has gained a pawn.} Nd4 50. Rc7+ Re7
51. Rxe7+ Kxe7 52. Bf1 Bc1 53. Bd3 Kd8 54. Kf1 Kc7 55. f4 h6 56. Ke1 g5 57.
fxe5 fxe5 58. Kd1 Be3 59. Bd2 Bf2 $5 60. hxg5 hxg5 61. g4 Bh4 62. Be3 Nc6 63.
Bxb5 Nxb4 64. Kd2 Nc6 65. Kd3 Nd4 66. Bxd4 exd4 67. Kxd4 Be1 68. e5 Kd8 69. Ke4
{Black cannot stop the white pawns, despite the bishops of opposite colours.
Fernandez Garcia scored well.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 1"]
[Date "1990.??.??"]
[Round "8"]
[White "Smyslov, Vassily"]
[Black "Campora, Daniel"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2570"]
[BlackElo "2520"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1990.04.??"]
[SourceDate "1999.07.01"]

{Smyslov was the old star of the event.} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5
exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 Nbd7 8. Qc2 Re8 9. Nge2 Nf8 10. O-O-O c6 11.
h3 N6d7 $5 ({An active move is} 11... b5 $1) 12. Bxe7 Qxe7 13. g4 $1 {
Smyslov advances immediately.} Nb6 $6 (13... b5 14. h4 a5 {shows ambition.})
14. Ng3 Be6 $5 15. Kb1 Nc8 $6 (15... a5 {goes forwards.}) 16. f4 Nd6 $6 (16...
f6 $1 {creates a hole for the queen's bishop.}) 17. f5 $1 Bd7 18. e4 $1 dxe4
19. Ncxe4 Nxe4 20. Nxe4 Qb4 21. Rhe1 b5 22. Qf2 Rad8 23. Bc2 Bc8 24. Bb3 h6 $5
{Black prevents Ng5.} 25. g5 $1 {But something else happens.} Rxe4 $5 (25...
hxg5 $2 26. Nxg5 {ends the game.}) 26. Rxe4 hxg5 27. Rde1 Rd6 28. d5 Qa5 29.
dxc6 Rxc6 30. Re8 b4 31. R8e5 Qd8 32. Re7 Rf6 33. Bc2 a5 34. Qc5 Bd7 35. R7e5
Rc6 36. Qxa5 Qb8 {Campora played a shy game.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 1"]
[Date "1990.??.??"]
[Round "13"]
[White "Fiorito, Fabian"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2350"]
[BlackElo "2570"]
[Annotator "JvR"]
[PlyCount "58"]
[EventDate "1990.04.??"]
[SourceDate "1999.07.01"]

{When the last round began, Fernandez and Morovic led by half-a-point on
Smyslov.} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e4 b5 6. e5 Nd5 7. a4 e6
8. Ng5 h6 9. Nge4 b4 10. Nb1 Ba6 11. Nbd2 Nf4 12. Qg4 Nd3+ 13. Bxd3 cxd3 14.
Nd6+ Bxd6 15. Qxg7 {They play a sharp theoretical line.} Bf8 $3 {
Smyslov springs a wonderful novelty.} ({Known is} 15... Rf8 $5 16. exd6 Nd7 17.
Nf3 {(Sosonko - Flear, Wijk aan Zee 1987).}) 16. Qxh8 Qxd4 17. O-O Nd7 18. Nf3
Qg4 19. Bxh6 $6 {White cannot handle the great complications.} ({Preferable is
} 19. Be3 $1 c5 20. Qh7) 19... Qh5 $1 20. Bg7 Qxh8 21. Bxh8 Bh6 $1 22. g4 $2 (
22. Bf6 $2 Nxf6 23. exf6 d2 {
will win for Black in Van Wely - Van der Sterren, Eindhoven 1991.}) ({Better is
} 22. Rfd1 $1 c5 23. b3 Ke7 24. Bf6+ Nxf6 25. exf6+ Kxf6 26. Rab1) 22... Ke7 $1
23. g5 Rxh8 24. gxh6 c5 25. Rfe1 c4 26. Rac1 $2 Rg8+ 27. Kh1 Bb7 28. Re3 Nxe5
$1 29. h7 Rh8 {Smyslov would join the lead, as a result of this win.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 1"]
[Date "1990.??.??"]
[Round "13"]
[White "Sunye Neto, Jaime"]
[Black "Morovic Fernandez, Ivan"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2470"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1990.04.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. Qb3 a5 8.
O-O O-O 9. d3 d6 10. Bg5 $5 ({Known is} 10. Na4) 10... Bxc3 11. Qxc3 h6 12. Bd2
Re8 13. Bg2 e4 $6 (13... c6 $1 {shows prudence.}) 14. Be3 $1 c5 15. d4 Qe7 16.
Rad1 Bf5 17. Rd2 $1 {White is going to conquer the d-file.} b6 18. Rfd1 Ng4 19.
dxc5 dxc5 20. Bf4 g5 $6 (20... Rad8 $1 21. h3 Rxd2 22. Qxd2 e3 $1 23. fxe3 Nxe3
{equalises.}) 21. Bd6 $1 Qe6 22. e3 Rad8 $2 (22... Ne5 $1 23. Bxe5 Qxe5 24.
Qxe5 Rxe5 {exchanges.}) 23. Qb3 $2 (23. Bf8 $1 {ends the game.}) 23... Nf6 $2 (
23... Nxf2 $1 24. Kxf2 Bg4 {fights back.}) 24. Bc7 Rd3 $5 25. Rxd3 exd3 26.
Qxb6 Qxb6 27. Bxb6 Nd7 28. Bxa5 Ne5 29. Bc3 $5 Nxc4 30. e4 $1 Bxe4 31. Bxe4
Rxe4 32. Rxd3 {White has an extra pawn.} Re2 33. b3 Na3 34. Rd2 Re8 35. Bb2 Nb5
36. Rc2 Rc8 37. Be5 Na3 38. Rc1 Nb5 39. a4 Na7 {Sunye caught up with Morovic.
The final standings became: Smyslov and Fernandez Garcia 9, Sunye Neto and
Morovic Fernandez 81/2, Quinteros, Adla and Milos 71/2, Campora and Gomez
Baillo 61/2, Fiorito and Van Riemsdijk 51/2, Panno 31/2, Paglilla and Ricardi
3.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "1"]
[White "Granda Zuniga, Julio"]
[Black "Milos, Gilberto"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2550"]
[BlackElo "2530"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

{The second Najdorf tournament happened in Buenos Aires, April 1991. Special
guests among the fourteen participants were Tal, Adams, Fedorowicz, Dolmatov
and Larsen.} 1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 5. Nf3 O-O 6. Be2 cxd4 7.
exd4 d5 8. O-O Nc6 9. Re1 Bg4 10. cxd5 Nxd5 11. h3 Bxf3 12. Bxf3 e6 13. Nxd5
exd5 14. Be3 Re8 $5 ({Usual is} 14... Qb6 15. Bxd5 Nxd4 16. Bxd4 Bxd4) 15. Re2
Qa5 16. Rc2 Rad8 17. Rc3 Rd7 18. Rac1 h5 19. g4 $5 hxg4 20. hxg4 Qd8 21. Kg2
Rd6 22. Rc5 Rd7 23. a3 Bf8 $6 (23... Na5 $1 24. Be2 b6 25. Rc8 Qxc8 26. Rxc8
Rxc8 {defends actively.}) 24. R5c3 Qf6 25. b4 a6 26. Qd2 Bg7 27. Rd3 Re4 $5 28.
Qd1 $5 ({The pointe of the sacrifice is} 28. Bxe4 $6 dxe4 29. Bg5 Qe6 30. Rg3
Rxd4 {and Black has counter-play.}) 28... Re8 29. Rc5 Qd8 30. Qb3 Re4 $2 {
White can refute the offer this time.} (30... Ne7 31. b5 b6 32. Rc1 a5 {
continues the passive defence.}) 31. Bxe4 dxe4 32. Rd2 Nxd4 $5 ({Or} 32... Qh4
33. Qd1 $1) 33. Qd1 $1 b5 {He prevents Rc4.} 34. Qc1 $1 {White threatens Rc8.}
Qh4 35. Rc8+ Bf8 $5 (35... Kh7 36. Qh1 $1 {also wins for White.}) 36. Rxf8+ $5
Kxf8 37. Qc8+ Rd8 38. Qc5+ Kg8 39. Rxd4 Qxg4+ 40. Kf1 Rc8 41. Qg5 Qh3+ 42. Qg2
Qe6 43. Qxe4 Qh3+ 44. Ke2 Qh5+ 45. Kd2 {
Julio Granda Zuniga is a strong Peruvan grandmaster.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "3"]
[White "Amura, Claudia"]
[Black "Nogueiras, Jesus"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "2405"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "112"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 f5 5. Bd3 Nf6 6. Qc2 Bd6 7. cxd5 cxd5 8. Nb5
Nc6 9. Nxd6+ Qxd6 10. Bd2 O-O 11. Nf3 Bd7 12. Rc1 $5 Ne4 {
The position is equal.} 13. O-O Rfc8 14. Qd1 Be8 15. Ne1 Nf6 $5 16. Nc2 Ng4 17.
g3 Nf6 $5 {Nogueiras loses four tempi without a problem.} 18. b4 a6 19. f3 Na7
20. Na3 Nb5 21. Nb1 $6 Qe7 22. Qb3 Nd6 $1 23. a4 Qd7 $5 24. a5 Qd8 25. Rxc8
Rxc8 26. Rc1 Rxc1+ 27. Bxc1 Bb5 28. Bc2 Be2 29. Kf2 Bc4 {
Black has the initiative.} 30. Qb2 Qe8 31. Bd1 g5 32. Nc3 g4 $1 33. fxg4 fxg4
34. Ke1 $2 ({Preferable is} 34. Kg1 $1 Bd3 35. Na4 Bf5 36. Nc5 Nfe4 37. Be2)
34... Qg6 35. Qc2 Nfe4 $1 36. Nxe4 Nxe4 37. Be2 Bxe2 38. Qc8+ $1 Kg7 $1 39.
Kxe2 ({Or} 39. Qxb7+ $6 Kf6 40. Kxe2 Nc3+ 41. Kd2 Nb1+ 42. Ke1 Qc2 {
and Black wins.}) 39... Qf7 {Black has the strong knight.} 40. Kd3 Nd6 $5 {
Nogueiras hesistates.} 41. Qd8 Ne4 42. Kc2 Kg6 43. Kb3 Nf6 44. b5 $5 Qd7 $1 45.
Qxd7 Nxd7 46. bxa6 bxa6 {He is going to win the knight versus bishop ending.}
47. Kc2 Kf5 $1 48. Kd3 Nf6 49. Ba3 Ne4 50. Bf8 Kf6 $5 (50... Ng5 {wins quickly.
}) 51. Ba3 Kf7 $5 52. Bb4 Ke8 {Black takes the long road.} 53. Be1 Kd7 54. Ke2
Kc6 55. Bb4 Kb5 56. Be1 Kc4 {The zugzwang becomes fatal.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "3"]
[White "Fedorowicz, John"]
[Black "Cifuentes Parada, Roberto"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2555"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Ba2
b6 9. Qe2 Bb7 $5 10. Rd1 Qc7 {Black resists passively.} 11. Nh4 exd4 12. Rxd4
Rfe8 $6 (12... Rae8 {uses both rooks as defenders.}) 13. Bf4 Bf8 $6 14. Rad1
Ne5 15. Nf5 Rad8 (15... d5 $5 16. exd5 c5 17. R4d2 Qd7 18. Nh6+ $1 gxh6 19.
Bxe5 Ng4 20. Ne4 Rxe5 21. Qxg4+ $1 {costs a pawn.}) 16. Bg5 $1 Bc8 17. Bxf6
gxf6 18. Qh5 Bxf5 19. exf5 $5 d5 $1 20. Rh4 h6 21. Rh3 Kh7 22. Rf1 Re7 23. Nd1
Rde8 24. Rg3 Bg7 25. c3 Qd6 26. Qh4 $5 Nd7 27. Qg4 $5 {White sees no decision.}
Bh8 28. Bb1 $6 Ne5 $1 29. Qh5 Nc4 $1 30. Ne3 Nxe3 $2 ({Better is} 30... Nxb2 $1
31. Qh4 Bg7) 31. fxe3 $1 {White opens an important file.} Qd8 $6 {
Capture of e3 leads to mate in two.} ({Or} 31... Rg8 32. Rh3 Bg7 33. Rff3 Bf8
34. Rfg3) 32. Rf4 $1 Bg7 33. Rxg7+ $1 {Fedorowicz ends the game.} ({
Elementary is} 33. Rxg7+ Kxg7 34. Rg4+ $1 Kh7 35. Rh4) 1-0

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "4"]
[White "Milos, Gilberto"]
[Black "Fedorowicz, John"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2530"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. d4 Nbd7 7. O-O e5 8. e4
c6 9. h3 a6 10. Be3 Re8 11. Qc2 b5 12. dxe5 Nxe5 $1 13. Nxe5 dxe5 14. Rfd1 Qe7
15. cxb5 cxb5 16. a4 Bd7 $5 ({Preferable is} 16... b4 $1 17. Nd5 Nxd5 18. exd5
e4) 17. axb5 axb5 18. Qb3 {White has the initiative.} Rxa1 19. Rxa1 b4 20. Nd5
Nxd5 21. exd5 Qd6 22. Ra7 Bf8 23. Rb7 Bf5 $5 24. g4 $5 ({The alternative is} 
24. Rb6 Qd8 25. Qa4 {(Milos)} h5 $1) 24... Bc8 25. Rb6 Qd8 26. Qa4 e4 $1 27. d6
$5 Re6 $1 28. Qxb4 Bxd6 29. Qd4 Qe7 30. Bh6 $1 f5 $2 ({Better is} 30... Qf6 31.
Qxf6 Rxf6) 31. Qd5 $2 (31. Bf1 $1 Bc5 {(Milos)} 32. Qc4 $1 Bxb6 33. Qxc8+ Qe8
34. Qc3 Qd7 35. Bc4 Qd1+ 36. Kg2 Qf3+ 37. Qxf3 exf3+ 38. Kxf3 {
gains a pawn in the endgame.}) 31... fxg4 32. hxg4 Qd8 33. Rb5 Qh4 34. Be3 Kf7
$6 ({Correct is} 34... Bc7 35. Rb7 Qh2+ 36. Kf1 Qe5 {and Black equalises.}) 35.
Rb6 Bh2+ $2 {Fedorowicz blunders under time pressure.} ({Right is} 35... Qh2+
$1 36. Kf1 Qe5 {(Milos).}) 36. Kf1 Qxg4 $2 37. Rc6 $1 Kg7 38. Rxc8 Re7 39. Rg8+
Kf6 40. Rf8+ {White delivers mate on the next move.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "6"]
[White "Amura, Claudia"]
[Black "Tal, Mihail"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2405"]
[BlackElo "2565"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. d4 d6 2. c4 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 5. Nc3 Be6 6. b3 c6 7. g3 Nd7 8.
Bh3 Bxh3 9. Nxh3 f6 10. Bb2 Kc7 11. O-O-O Nh6 12. f3 $5 ({Known is} 12. Rd2)
12... Nf5 13. Nf2 Bb4 14. Nd3 a5 15. Kb1 $5 Ne3 $1 16. Rd2 Be7 17. Ne1 Nc5 18.
Nc2 Nxc2 19. Kxc2 a4 20. Rhd1 axb3+ 21. axb3 Rhd8 22. Rxd8 Bxd8 $5 23. b4 Na6
$5 24. Kb3 Be7 25. Ba3 Rd8 26. Rxd8 Kxd8 27. Ka4 Kd7 28. g4 Nc7 29. Bc1 g6 30.
b5 $6 {He opens the position.} ({Preferable is} 30. c5) 30... Ne6 $1 31. bxc6+
$6 Kxc6 $1 32. Nd5 $5 b5+ $1 33. Kb3 Nd4+ 34. Kb2 $2 ({Better is} 34. Kc3 $1
Nxe2+ {(Khalifman)} 35. Kd2 Nxc1 36. Nxe7+ Kd6 37. Nd5 bxc4 38. Nxf6 Nb3+ 39.
Kc3 h6 40. h3 {White has lost a pawn in the knight ending but might survive.})
34... Bd8 $1 {Amura loses material.} 35. Ne3 Nxe2 36. cxb5+ Kxb5 37. Bd2 Nd4
38. f4 $5 exf4 39. Nf1 Ne2 40. Kc2 Kc4 41. Be1 Nd4+ 42. Kd1 Kd3 43. Bb4 Nc2 {
Tal played a fine tournament, despite his deteriorating health.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "6"]
[White "Boissonet, Carlos"]
[Black "Adams, Michael"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2400"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. d4 d6 2. e4 Nf6 3. f3 d5 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 e6 8. O-O $5
{White sacrifices a pawn.} cxd4 9. cxd4 Qb6 10. Kh1 $1 Nxd4 $1 11. Nxd4 Qxd4
12. Nc3 $5 (12. f4 {protects pawn e5.}) 12... a6 $5 ({Adams could have done} 
12... Qxe5) 13. f4 Qb6 14. f5 $2 {He goes too far.} Nxe5 $1 15. Bc2 d4 16. Bf4
Nc6 17. Na4 Qa5 18. Qg4 h5 19. Qe2 e5 20. a3 $2 Be7 $2 (20... d3 $1 21. Qxd3
exf4 {gains a piece.}) 21. Bd2 Qc7 22. b4 Bd7 23. Rab1 Rd8 24. Bb3 b5 25. Nb2
Nb8 $6 {He plays too passively.} 26. Nd3 f6 27. Qf3 Bc6 28. Qg3 Kf8 29. Rbc1
Bd6 30. Nc5 $6 Bxc5 $1 31. Rxc5 h4 $1 32. Qg6 Qb7 $6 (32... h3 $1 {
ends the game.}) 33. Rfc1 $1 {White threatens 34.Rxc6! Nxc6 35.Rxc6!} Be8 34.
Qg4 h3 35. Rc7 $2 ({Correct is} 35. Bd5 $3 Qe7 $1 (35... Rxd5 $2 36. Rc7 $1)
36. gxh3) 35... Qxg2+ $1 36. Qxg2 hxg2+ 37. Kxg2 Bd7 38. Be6 Ke7 39. Ra7 Rc8
40. Rxc8 Rxc8 41. Kf1 Kd6 42. Bxd7 Nxd7 43. Rxa6+ Kd5 44. a4 bxa4 45. Rxa4 Nb6
46. Ra6 Nc4 47. Ke1 Ke4 48. b5 Rb8 {Adams competed well.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "9"]
[White "Adams, Michael"]
[Black "Granda Zuniga, Julio"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2600"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8.
Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. Bd3 Be6 12. c4 Qa5+ 13. Kf1 Nb4 $5 ({
Usual is} 13... Bxd5 14. exd5 Nd4) 14. exf5 ({Adams will play} 14. Qe1 $5 Bxd5
15. exd5 {against Fedorowicz in round 12.}) 14... Bxd5 15. cxd5 Nxd3 16. Qxd3
Rc8 17. Nc2 Bh6 18. Ne3 Qb4 19. Rb1 Bxe3 20. fxe3 Rg8 21. Kf2 $6 (21. g3 $1 Qa4
22. Re1 $1 Qxa2 23. Re2 Qc4 24. Qxc4 Rxc4 25. Kg2 {
returns the pawn for development.}) 21... Qg4 $1 22. g3 e4 $1 23. Qe2 $6 ({
Preferable is} 23. Qd2 Qxf5+ 24. Ke1) 23... Qh3 $5 24. Rbf1 Rg5 $1 25. Ke1 Rxf5
26. Qd2 $2 (26. Rxf5 Qxf5 27. Qd2 Rc5 28. Rf1 Qxd5 29. Qxd5 Rxd5 30. Rf4 Re5
31. Kd2 {brings survival chances in the rook ending.}) 26... Rf3 $1 {
The black pieces penetrate the hostile position.} 27. Rhg1 Rc5 28. Rxf3 exf3
29. g4 Qh6 30. Rg3 Qg6 $1 31. Qd1 Qe4 32. Rxf3 Rc2 33. Rf2 Qh1+ 34. Rf1 Qxh2
35. Qd3 Rc1+ {Granda Zuniga competed for victory in the event.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "10"]
[White "Amura, Claudia"]
[Black "Dolmatov, Sergey"]
[Result "0-1"]
[ECO "E97"]
[WhiteElo "2405"]
[BlackElo "2620"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Nc6 8. d5
Ne7 9. Nd2 a5 10. a3 Nd7 11. Rb1 f5 12. b4 Kh8 13. f3 Ng8 14. Nb3 axb4 15. axb4
Ndf6 16. c5 Nh5 17. g3 Nhf6 18. g4 $5 ({Theory is} 18. Bd2) 18... Ne8 19. Bd2
Nh6 20. h3 Nf7 21. Kg2 Bf6 22. cxd6 cxd6 23. Na5 h5 24. Be3 {White seems to
have a plus, because he controls more territory, but he has to remain on the
alert.} Bg5 25. Bf2 $5 ({More solid is} 25. Bxg5 $1 Qxg5 26. Qc1) 25... Kg7 26.
Na4 $6 {The queen's knight moves from the defensive position.} ({Preferable is
} 26. gxf5 gxf5 27. Rg1) 26... hxg4 27. hxg4 $2 (27. fxg4 $1 fxe4 28. Nb6 Rb8
29. Nac4 {keeps the kingside intact.}) 27... fxg4 28. fxg4 Nh6 29. Bf3 Nf6 $1 {
Pawn g4 falls.} 30. Nb6 Rb8 $6 31. Nxc8 Qxc8 32. Ba7 $6 Ra8 33. Bg1 Rh8 34. Rb3
Bf4 $5 35. Rf2 Nhxg4 36. Bxg4 ({The pointe is} 36. Rc2 Ne3+ $1 37. Rxe3 Qh3+
38. Kf2 Ng4+ 39. Ke2 Bxe3 40. Bxe3 Raf8 {and Black wins.}) 36... Nxg4 37. Rc2
Qd7 38. Rcc3 Nf6 39. Qe2 Rh5 40. Rh3 Rxh3 41. Rxh3 Nxe4 $1 42. Rd3 Qf5 {
Dolmatov has triumphed on the kingside.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "10"]
[White "Nogueiras, Jesus"]
[Black "Ricardi, Pablo"]
[Result "1-0"]
[ECO "D28"]
[WhiteElo "2540"]
[BlackElo "2435"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Qe2 a6 7. dxc5 Bxc5 8.
O-O Nc6 9. e4 O-O 10. e5 Nd5 11. Rd1 $5 {White has a pleasant game.} Be7 $5 12.
Qe4 b5 $5 ({The alternative is} 12... Nf6 $1 13. Qc2 Nb4 14. Qe2 Nd7) 13. Bd3
g6 14. Bh6 Re8 15. Nbd2 Ncb4 16. Bf1 Bb7 17. Qg4 Rc8 18. Ne4 Rc2 $6 ({
Preferable is} 18... Qb6) 19. a3 Nc6 {Rook c2 is in danger.} 20. Rab1 Na5 21.
Bd3 Rc7 22. h4 Rd7 23. Bc2 $5 Nc4 24. Bg5 $5 h5 $2 (24... Qc7 $1 25. Bxe7 Nxe5
$1 26. Nxe5 Rdxe7 27. Rxd5 exd5 28. Nf6+ Kh8 29. Nxf7+ $1 Rxf7 30. Nxe8 Qe5 $1
31. Rd1 Re7 {fights for the last chance.}) 25. Qg3 $1 Bxg5 26. Nfxg5 Qe7 27.
Bb3 $5 {Jesus misses a miracle but wins anyway.} (27. Rxd5 $1 Rxd5 28. Nf6+ Kh8
29. Nxf7+ $1 Qxf7 30. Bxg6 Rg8 31. Bxf7 Rxg3 32. Nxd5 {nets two pawns.}) 27...
Red8 28. Bxc4 bxc4 29. Nd6 Rxd6 $5 30. exd6 Qxd6 $5 31. Qxd6 Rxd6 32. Rbc1 Rb6
33. Rd2 $1 Rc6 34. Nf3 Nf4 35. Ne1 $5 Rc5 $5 36. g3 Nd5 37. Nd3 $1 Rc7 38. Ne5
c3 39. bxc3 Nxc3 40. Kh2 Rc5 41. Nd7 Rc8 42. Rdc2 {Nogueiras attacked nicely.}
1-0

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "12"]
[White "Tal, Mihail"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2565"]
[BlackElo "2440"]
[Annotator "JvR"]
[PlyCount "69"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Bd3 Nc6 7. Be3 Nf6 8.
O-O Ne5 9. h3 Bc5 10. Na4 Ba7 11. c4 d6 12. Rc1 Nxd3 13. Qxd3 Bd7 14. Nc3 O-O
15. Rfd1 Rfc8 $5 (15... Rac8 {occurred in Sigurjonsson - Harston, Ybbs 1968.})
16. b3 Ne8 $5 ({A novelty will become} 16... Bc5 $1) 17. Nf3 Bxe3 18. Qxe3 b6
19. Qf4 Bc6 20. Nb5 $1 Bxb5 $1 (20... axb5 $5 21. cxb5 Qb7 22. bxc6 Rxc6 23.
Rxc6 Qxc6 {is alright (Fedorowicz).}) 21. cxb5 Qb7 22. Rxc8 Rxc8 23. e5 dxe5
24. Nxe5 Nf6 25. bxa6 Qxa6 26. Nc6 $5 Re8 $2 (26... Qa3 $1 27. b4 Rf8 $1 {
equalises.}) 27. Qc7 $1 {Tal attacks!} Qe2 ({The pointe is} 27... Nd5 28. Ne7+
$1 Nxe7 29. Rd8 Kf8 30. Qd7 {and wins (Khalifman).}) 28. Rd8 $1 Qe1+ 29. Kh2
Qxf2 30. Ne5 $1 Qf4+ 31. Kg1 $1 Qe3+ 32. Kh1 $1 Qe1+ $2 (32... Kh8 $1 33. Nxf7+
Kg8 34. Ne5 Kh8 35. a4 $1 h6 36. Rd3 Nd5 37. Rxe3 Nxc7 {offers more resistance.
}) 33. Kh2 Qxe5+ 34. Qxe5 Rxd8 35. Qc7 $1 {
Tal won his last international tournament. He would die the next year.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 2"]
[Date "1991.??.??"]
[Round "13"]
[White "Cifuentes Parada, Roberto"]
[Black "Granda Zuniga, Julio"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2510"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1991.04.??"]
[SourceDate "1999.07.01"]

{Granda led by half-a-point on Tal and Nogueiras, when the last round began.
The prosecutors played quick draws. So Granda also needed a draw.} 1. d4 Nf6 2.
Nf3 e6 3. Bg5 d5 4. Nbd2 Be7 5. e3 c5 6. c3 Nc6 7. Bd3 Nd7 8. Bxe7 Qxe7 9. O-O
O-O 10. Re1 Rd8 $5 11. Qe2 g6 12. Rad1 c4 $5 ({The alternative is} 12... e5 $1
13. e4 dxe4 {(Cifuentes)} 14. Bxe4 cxd4 15. Bxc6 dxc3 16. Bb5 cxd2 17. Qxd2 f6)
13. Bc2 f5 $1 14. Ba4 $1 Ncb8 $5 15. Bxd7 Nxd7 16. b3 b5 17. bxc4 bxc4 18. Ne5
Nxe5 19. dxe5 Bd7 20. Nf3 Rab8 21. Rb1 Qc5 22. Rb2 Rb6 23. Reb1 Rdb8 24. h4 h6
25. Nd4 Rxb2 26. Rxb2 Qc7 27. f4 Rb6 28. Qd2 h5 29. Qc1 Kf7 30. Rxb6 Qxb6 31.
Kh2 {White has the strong knight.} Ke8 32. Qa3 Bc8 33. Qb4 $1 Qxb4 34. cxb4 c3
$2 {The passed pawn will become a great weakness.} ({Better is} 34... Kd8 35.
Kg3 Kc7 36. Kf2 Kb6 37. a3 Bd7 38. Ke1 a5 39. Kd2 axb4 40. axb4 Bc8 41. Kc3 Bd7
{and White cannot penetrate the hostile position.}) 35. Kg3 $1 Ba6 36. Kf2 Kd7
37. Ke1 Bc4 38. a3 Bd3 39. Kd1 Be4 40. g3 Bd3 41. Kc1 Ke7 42. Nb3 Kf7 43. Nc5
Be4 44. b5 Ke7 45. a4 {Granda did not become the sole winner. Final standings:
Granda Zuniga, Tal and Nogueiras 81/2/13, Fedorowicz 8, Milos, Dolmatov and
Adams 71/2, Cifuentes Parada, Barbero and Panno 6, Larsen and Boisonnet 5,
Ricardi 41/2, Amura 21/2.  The third Najdorf tournament became Buenos Aires,
April 1992. It was won by Chernin.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "1"]
[White "Kamsky, Gata"]
[Black "Campora, Daniel"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2655"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

{Najdorf tournament number 4 was played in Buenos Aires from 16 until 30 iv
1993. The quantity of participants went down from fourteen to twelve. Special
guests were Kamsky, Shirov, Seirawan, Illescas, Kortschnoj and Larsen. Najdorf
spent circa $135,000 on the event.} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 5.
Bg2 Nxf3+ 6. Bxf3 Bb4 7. d4 e4 8. Bg2 O-O 9. O-O $5 Bxc3 10. bxc3 Re8 11. Bg5
h6 12. Bxf6 Qxf6 13. f3 exf3 $6 {Campora strengthens the white centre.} ({
Kamsky prefers} 13... e3 $1) 14. Bxf3 Qg5 15. Bd5 Re7 $6 (15... Rf8 $1 16. Qd3
c6 17. Rf5 Qe7 {defends accurately.}) 16. Qd3 c6 17. Rf5 Qg4 ({Not} 17... Qg6
$4 18. Rxf7 $1 {(Kamsky).}) 18. Bf3 Qg6 $6 ({Preferable is} 18... Qh3 $1 19.
Rf4 d6) 19. Bh5 Qh7 $1 20. Re5 $1 Qxd3 21. exd3 {
White occupies the central area with two doubled pawns.} Re6 22. Rb1 g6 $2 (
22... b6 $5 23. Rxe6 dxe6 24. Bf3 Bd7 {develops the queenside.}) 23. Rxe6 $1
dxe6 24. Bf3 $1 Kf8 {Black cannot develop the queenside.} 25. c5 $1 a5 26. c4
Ra7 27. Kf2 Ke7 28. Ke3 Bd7 29. a3 Be8 30. Rb6 $1 Kd8 31. d5 Kc7 32. d6+ {
The avelanche of central pawns moves forward. So a special pawn structure
prevails.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "2"]
[White "Seirawan, Yasser"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2595"]
[BlackElo "2670"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 5. Nf3 b5 {
Shirov likes this type of development.} 6. cxd5 cxd5 7. Ne5 Nbd7 8. f4 e6 9.
Bd3 Bb7 10. O-O Bd6 11. Bd2 O-O 12. Be1 Ne4 13. Qb1 $5 ({Usual is} 13. Qf3)
13... Ndf6 14. Bh4 Rc8 (14... Nd2 $6 15. Qc2 $1 Nxf1 16. Bxh7+ Kh8 17. Rxf1 {
favours White (Shirov).}) 15. Rc1 $5 Qa5 16. Bxe4 Nxe4 17. Nxe4 dxe4 18. Nd7
Qd2 $1 {Black makes a great sacrifice.} 19. Nxf8 Qxe3+ 20. Bf2 Qxf4 21. g3 $2 (
21. Rxc8 Qxh2+ 22. Kf1 Bxc8 23. Qxe4 Bxf8 {about equalises (Shirov).}) 21...
Rxc1+ 22. Qxc1 Qf5 23. Be3 ({The pointe is} 23. Nxe6 $2 e3 $3 24. Qxe3 Qd5 25.
Kf1 Qh1+ 26. Bg1 Qg2+ 27. Ke1 Bb4+ 28. Kd1 Bf3+ {(Shirov).}) 23... Bxf8 $1 24.
Qc7 Qf3 25. Qf4 Qe2 26. Qf2 Qd3 27. Qd2 Qc4 28. b3 Qd5 29. Rc1 Bd6 30. Qa5 h6
31. Qd8+ Kh7 32. Qd7 $4 (32. Kg2 Bc6 33. Rc5 $1 Bxc5 34. Qxd5 exd5 35. dxc5 {
accepts the slight problems.}) 32... Bf4 $1 {Shirov wins material.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "4"]
[White "Seirawan, Yasser"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "E35"]
[WhiteElo "2595"]
[BlackElo "2605"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 c5 7. dxc5 h6 8.
Bxf6 Qxf6 9. e3 O-O $5 10. Nf3 Be6 11. Rc1 Nd7 12. Bb5 $6 ({More solid is} 12.
Be2) 12... Ne5 $1 {Black takes the initiative.} 13. Nd4 Bxc5 14. O-O a6 15.
Nxe6 $5 fxe6 16. Be2 Ba7 17. Qb3 Rf7 18. Nd1 Raf8 19. Rc3 Qg5 20. Qc2 Nc6 21.
a3 $6 h5 $6 (21... d4 $1 {attacks.}) 22. Qc1 $2 {
White defends passively, a fatal decision.} (22. Rxc6 $1 bxc6 23. Qxc6 Qg6 24.
Qxa6 {counterattacks and achieves equal chances.}) 22... h4 $1 23. Kh1 Bb8 24.
Rc2 Qe5 25. f4 g5 $1 26. Bh5 $6 (26. g3 $5 Qf5 $1 27. gxh4 gxf4 28. Bg4 Qe4+
29. Rg2 Kh8 {also wins for Black.}) 26... Rf6 27. g3 $2 (27. Bf3 {
prolongs the game.}) 27... gxf4 28. Bg4 fxg3 29. Rxf6 Qxf6 30. Nc3 Qf1+ 31.
Qxf1 Rxf1+ 32. Kg2 gxh2 33. Bxe6+ Kh8 34. Kxf1 {
Kortschnoj competed for the first place.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "6"]
[White "Seirawan, Yasser"]
[Black "Zarnicki, Pablo"]
[Result "1-0"]
[ECO "E21"]
[WhiteElo "2595"]
[BlackElo "2470"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

{Zarnicki was the Argentinian Junior World Champion.} 1. d4 Nf6 2. c4 e6 3. Nf3
b6 4. Nc3 Bb4 5. Qb3 c5 6. a3 Ba5 7. Bg5 Nc6 8. O-O-O Bxc3 9. d5 Be5 (9... exd5
10. cxd5 Be5 11. dxc6 {occurred in Seirawan - Timman, Hilversum 1990 (5).}) 10.
dxc6 Qc7 $6 ({Known is} 10... Bc7) 11. g3 $1 Bd6 $5 12. Bg2 dxc6 13. Rxd6 $1
Qxd6 14. Rd1 Qc7 $2 ({Right is} 14... Nd5 $1 15. e4 $1 {(Seirawan)} Bb7 16.
exd5 cxd5 {and Black can fight.}) 15. Bf4 $1 Qb7 16. Ne5 Bd7 17. Rxd7 $1 Nxd7
18. Bxc6 Qa6 19. Nxd7 Qc8 20. Ba4 ({Even better is} 20. Qf3 $1) 20... Ke7 21.
Qd3 f6 22. Qd6+ Kf7 23. Ne5+ $1 fxe5 24. Bd7 Qd8 25. Qxe6+ Kf8 26. Bxe5 g6 27.
Bf6 {The young man was overwhelmed in a theoretical line.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "7"]
[White "Granda Zuniga, Julio"]
[Black "Seirawan, Yasser"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2590"]
[BlackElo "2595"]
[Annotator "JvR"]
[PlyCount "111"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Nc6 7. e4 e5 8. d3 g6
$5 ({Usual is} 8... Be7) 9. Nxe5 $5 {
Granda delivers a fine positional sacrifice.} Nxe5 10. f4 Nc6 11. e5 Ng8 {
Black retreats.} 12. f5 Nh6 $2 {He should develop the other flank.} ({Better is
} 12... Rb8 $1 {(threatens ..Nxe5)} 13. Qe1 Nd4) 13. Ne4 $1 Nxf5 14. Nf6+ Ke7
15. Nd5+ Ke8 16. Nf6+ Ke7 17. g4 $5 {White plays for a win.} Nfd4 18. Qe1 $6
Qb8 $1 {Pawn e5 is attacked.} 19. Nd5+ Kd8 $6 (19... Ke8 $1 20. Qf2 f5 21. exf6
Kf7 {creates a new defensive screen.}) 20. Bg5+ Kc8 21. Rxf7 Ne6 $5 (21... Nxe5
$5 22. Rxf8+ $1 Rxf8 23. Ne7+ {(Seirawan)} Kd8 $1 24. Nc6+ Kc8 25. Ne7+ {
draws by perpetual check.}) 22. Bf6 Ncd8 23. Re7 $2 {Granda makes a weird move.
} (23. Rxd7 Kxd7 24. Bxh8 {equalises.}) 23... Rg8 $4 {The tables turn.} (23...
Bxd5 $1 24. cxd5 Bxe7 25. Bxh8 {(Seirawan)} Nf4 $1 26. Qe4 Nxg2 27. Qxg2 Qb7 {
leads to a black advantage.}) 24. Re8 $1 Bc6 25. Bxd8 $1 Nxd8 26. Nf6 $5 Rh8
27. Bxc6 dxc6 28. Qe4 Qc7 29. e6 Bg7 30. e7 $1 Rxe8 31. Nxe8 Bd4+ 32. Kh1 Qd7
33. Nd6+ Qxd6 34. e8=Q a5 35. Rf1 Ra7 36. Rf8 Rd7 37. Q4e6 Qxe6 38. Qxe6 Kc7
39. Qe2 Bg7 40. Rf2 Bd4 41. Rf3 Nf7 42. Rf4 Nd6 43. Kg2 Nc8 44. b3 Re7 45. Re4
Rf7 46. Qe1 Rd7 47. Qg3+ Kb7 48. h3 Rf7 49. h4 Rd7 50. Re6 Bc3 51. Qf3 Nd6 52.
Qf8 Nc8 53. Re8 Rc7 54. Rd8 Bg7 55. Qe8 Bf6 56. Rxc8 $1 {
Yasser had a hard time in Buenos Aires.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "7"]
[White "Zarnicki, Pablo"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "2470"]
[BlackElo "2670"]
[Annotator "JvR"]
[PlyCount "166"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. O-O Ngf6 6. Re1 e6 7. d3 Be7 8.
a4 O-O 9. Nbd2 a6 10. a5 d5 $5 11. Qe2 Nb8 $5 12. exd5 Nxd5 13. Nc4 Nc6 14. c3
$5 {White weakens pawn d3.} Qc7 15. Bg5 Rad8 16. Bxe7 Ndxe7 17. Nfe5 Rd5 18.
Nxc6 Nxc6 19. Qe4 Rfd8 20. Re3 Ne7 21. Rd1 Nf5 22. Re2 Nd6 23. Nxd6 $2 ({
Correct is} 23. Qf4 $1 Rf5 24. Qg3 {
and White does not lose a pawn, due to the pin.}) 23... R8xd6 24. Red2 c4 $1
25. h3 g6 26. Qf4 e5 27. Qe3 Qd8 28. d4 Qxa5 29. dxe5 Rxd2 30. Rxd2 Rxd2 31.
Qxd2 Qxe5 {Black has an extra pawn in the queen ending.} 32. Qd8+ Kg7 33. Qb6
Qe4 34. g3 g5 35. g4 h6 36. Kh2 Qf3 37. Kg1 Qxh3 $5 38. Qd4+ $1 Kg8 39. Qxc4
Qf3 40. Qc8+ Kg7 41. Qd7 h5 $1 42. gxh5 Kh6 43. Qc8 Kxh5 44. Qh8+ Kg4 45. Qc8+
f5 46. Qc7 b5 47. Qd6 a5 48. Qc7 a4 $5 49. Qd6 Qf4 50. Qd5 Qc4 51. Qg2+ Kh5 52.
Qh3+ Kg6 53. Qh8 f4 $2 (53... g4 $1 54. Qe5 Qd3 {keeps the advantage.}) 54.
Qe8+ Kf5 55. f3 $1 {White controls the entry to his position.} Qc5+ 56. Kg2 Kf6
57. Qh8+ Ke6 58. Qe8+ Kd5 59. Qg8+ Kc6 60. Qc8+ Kb6 61. Qb8+ Ka6 62. Qa8+ Qa7
63. Qd5 Qe7 64. Qc6+ Ka5 65. Kh3 b4 66. c4 $5 Qe5 $1 67. Qa8+ $5 Kb6 68. Qxa4
$2 {Greed becomes fatal.} (68. Kg4 $1 {draws.}) 68... Qe6+ $1 69. Kh2 Qe2+ 70.
Kg1 Qe1+ 71. Kg2 Qg3+ $1 72. Kh1 Qxf3+ 73. Kg1 Qe3+ 74. Kh2 Qf2+ 75. Kh1 Qf1+
76. Kh2 Qxc4 77. Qd1 Kc5 78. Qg1+ Qd4 79. Qxg5+ Kc4 80. Qg8+ Kd3 81. Qb3+ Ke2
82. Qc2+ Qd2 83. Qe4+ Kd1+ {Shirov had won a difficult endgame.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "8"]
[White "Illescas Cordoba, Miguel"]
[Black "Milos, Gilberto"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2615"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

1. c4 e6 2. Nf3 Nf6 3. Nc3 d5 4. d4 Be7 5. cxd5 exd5 6. Bf4 O-O 7. e3 Bf5 8.
Qb3 Nc6 9. a3 a6 $6 ({Known is} 9... Na5 10. Qa2 c6) 10. Qxb7 $1 Na5 11. Qxc7
Qxc7 12. Bxc7 Nb3 13. Rd1 Bc2 14. Be2 $2 (14. Be5 $1 Bxd1 15. Kxd1 Rfc8 16. Bd3
{favours White.}) 14... Bxa3 $1 15. O-O $5 ({The pointe is} 15. bxa3 Rfc8)
15... Bxb2 16. Na4 Ba3 17. Nb6 $2 ({Correct is} 17. Rde1 $1 Bb4 18. Bd1 $1 Bxe1
19. Bxc2 Ba5 $1 20. Be5 Nd2 21. Nxd2 Bxd2 22. Nb6 $1 Rad8 23. Bc7 Rde8 24. Bd6
{and White achieves material equality.}) 17... Ra7 $1 18. Be5 Rb7 19. Na4 Bxd1
20. Rxd1 {Black has gained an exchange.} a5 21. Bxf6 gxf6 22. Nh4 Rc7 $6 23.
Rd3 $6 (23. Nb6 $1 Rd8 24. Bf3 {wins pawn d5.}) 23... Rb8 $5 (23... Rc1+ $1 24.
Bf1 Rb8 {ends the game.}) 24. g3 Bf8 25. Bd1 Nc1 26. Rd2 Rb1 27. Kg2 Bb4 28.
Rb2 Ra1 $5 29. Bc2 Ra2 30. Bd1 Rxb2 31. Nxb2 Na2 32. Kf3 Nc3 33. Bb3 Rb7 34.
Na4 Nxa4 35. Bxa4 Bf8 36. Bc6 Rb6 37. Bxd5 a4 38. Ke2 a3 39. Kd1 Rb2 40. Kc1
Rxf2 {Milos won an uneven game.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "9"]
[White "Spangenberg, Hugo"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "C04"]
[WhiteElo "2505"]
[BlackElo "2495"]
[Annotator "JvR"]
[PlyCount "110"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

{The young Hugo Spangenberg had qualified for the event, because he triumphed
in the Najdorf Open by 9/11.} 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5
Nd7 6. Nb3 Be7 7. Bb5 Ncb8 8. O-O b6 9. a4 a5 10. Qe2 O-O 11. Be3 Ba6 12. c4
dxc4 $5 ({Known is} 12... c6 13. Bxa6 Nxa6) 13. Bxc4 Bxc4 14. Qxc4 Na6 15. Rac1
Ndb8 $1 {The black knights jump around.} 16. Nbd2 c6 17. Qc2 Qd5 18. Nc4 Nb4
19. Qe2 Nd7 20. Bg5 Rfe8 21. Rfd1 $5 ({Preferable is} 21. Bxe7 $1 Rxe7 22. Rfd1
) 21... Bf8 22. Nfd2 b5 23. Ne4 Na2 ({Not} 23... bxc4 $4 24. Nc3) 24. Ra1 Qxc4
25. Qxc4 bxc4 26. Rxa2 c5 $1 27. dxc5 $6 (27. Be3 $1 Rec8 28. Raa1 Rab8 29. Nd6
$1 Bxd6 30. exd6 Rxb2 31. dxc5 {keeps an edge.}) 27... Nxe5 28. Nd6 Reb8 $1 {
Black takes the initiative.} 29. Bd2 Nd3 $6 (29... Bxd6 $1 30. cxd6 Rd8 31. Bc3
Nd3 {wins a pawn.}) 30. Nxc4 Bxc5 31. Bxa5 $2 (31. Be3 $1 Nb4 32. Raa1 Bxe3 33.
Nxe3 {defends properly.}) 31... Nxf2 $1 32. Rda1 Nd3+ 33. Kf1 Nxb2 $1 34. Rxb2
Rxb2 35. Nxb2 Rxa5 {He has gained a pawn.} 36. Nc4 Ra6 37. Ke2 Kf8 38. Kd3 Ke7
39. Kc2 Bd4 40. Rd1 e5 41. Kb3 f5 42. a5 g5 43. Kb4 Ke6 44. Kb5 Ra8 45. Nb6 Ra7
46. a6 f4 47. Rd3 $6 (47. Rc1 $5 g4 48. Rc6+ Kf5 49. Nc8 f3 $1 50. gxf3 gxf3
51. Nxa7 f2 $1 52. Rc1 Bxa7 53. Kc4 e4 {wins for Black.}) 47... g4 48. Nc8 Rf7
$1 49. Rd1 f3 50. gxf3 gxf3 51. Rf1 e4 52. Kc6 e3 53. Nd6 f2 $1 54. Nb5 Ke5 55.
a7 Rxa7 $1 {Panno won three of the last four games.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "10"]
[White "Kamsky, Gata"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "B83"]
[WhiteElo "2655"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Be2 Nf6 7. O-O Be7 8.
Be3 O-O 9. f4 Bd7 10. Qd3 $5 {The move is odd but not bad.} ({
Usual in the Scheveningen was} 10. Qe1) 10... a6 11. Rad1 Rc8 12. a3 Qc7 13.
Nb3 Rfd8 14. Kh1 b5 15. Bf3 b4 16. axb4 Nxb4 17. Qd2 d5 $1 18. e5 Ne4 19. Bxe4
dxe4 20. Qf2 $1 {White has a plus.} ({Not} 20. Nxe4 $2 Bb5 $1 21. Nd6 Bxf1 22.
Qxb4 Bb5) 20... Bb5 $2 21. Rxd8+ $2 {They miss a trick.} (21. Nxb5 $1 axb5 22.
Bb6 Rxd1 23. Bxc7 Rxf1+ 24. Qxf1 Rxc7 25. c3 {favours White.}) 21... Qxd8 22.
Rd1 Qe8 23. Bc5 Bxc5 24. Nxc5 e3 $1 25. Qxe3 Nxc2 26. Qf2 Nb4 27. N3e4 Rb8 $6 (
27... Qc6 $1 28. Rd6 Qa8 {equalises.}) 28. Qg3 Kh8 $6 (28... Qe7 29. Nd6 {
(Kamsky)} h6 {defends well.}) 29. Nd6 Qe7 30. f5 $1 Rf8 $2 {
Both players experience time pressure.} (30... Nd5 $1 31. Qg5 $5 Qxg5 32. Nxf7+
Kg8 33. Nxg5 Ne3 34. Re1 Nxf5 {offers an excellent resistance.}) 31. h3 Nc6 32.
f6 $1 gxf6 33. exf6 Qxf6 34. Nd7 Qg7 35. Qxg7+ Kxg7 36. Nxf8 Kxf8 37. Nxb5 axb5
38. Rd6 {Kamsky, Shirov and Kortschnoj shared the lead by a score of 61/2/10
at the end of the penultimate round.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 4"]
[Date "1993.??.??"]
[Round "11"]
[White "Larsen, Bent"]
[Black "Kortschnoj, Viktor"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2540"]
[BlackElo "2605"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1993.04.??"]
[SourceDate "1999.07.01"]

{Kamsky and Shirov played eventless draws during the last round, but Viktor
the Terrible wanted to win.} 1. c4 f5 2. d4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O
6. Nf3 d6 7. O-O Qe8 8. d5 c6 9. Rb1 Na6 10. b4 cxd5 $6 {
Kortschnoj makes a doubtful move.} ({Theory is} 10... Bd7 11. dxc6 bxc6) 11.
Nxd5 Nxd5 $5 (11... Ne4 12. Ng5 Nc3 13. Nxc3 Bxc3 {
favoured White in Yrjola - Gurevich, Tallinnn 1987.}) 12. Qxd5+ Kh8 13. Bb2 Nc7
$6 (13... Bxb2 14. Rxb2 Qf7 15. Qxf7 Rxf7 {tries to equalise by exchanges.})
14. Bxg7+ Kxg7 15. Qd2 Rf6 16. c5 $1 Bd7 $6 (16... dxc5 17. Rfc1 Ne6 18. bxc5
Qd8 {defends well.}) 17. cxd6 exd6 18. Rfc1 Qd8 19. Nd4 {
White controls the centre.} Rb8 20. b5 Ne6 21. Nxe6+ Bxe6 22. a4 Bf7 23. Qd4 $1
{The pin will become awful.} b6 24. Rc3 Rc8 25. Rbc1 Rxc3 26. Rxc3 h6 27. e3 g5
28. h3 Kg6 29. g4 fxg4 30. hxg4 Kg7 31. f4 $1 Qe7 32. f5 h5 $5 33. gxh5 Bxh5
34. Bd5 Bf7 35. e4 Bxd5 36. Qxd5 Qf7 $6 (36... Rf8 $1 37. Rc6 Rd8 38. Qc4 Qe5
39. Rc7+ Kh6 {offers more resistance.}) 37. Qd2 $1 Qh5 38. Rg3 Kf8 ({Or} 38...
g4 39. Qg2 $1) 39. Rxg5 Qh4 40. Qc1 Rh6 $2 41. Qc8+ Ke7 42. Rg7+ Kf6 43. Qc3# {
Kortschnoj had not won the event. Final standings: Kamsky and Shirov 7/11,
Kortschnoj 61/2, Larsen and Granda Zuniga 6, Campora, Illescas Cordoba and
Milos 51/2, Panno 5, Spangenberg 41/2, Seirawan 4, Zarnicki 31/2. Kamsky
became the winner on tie-break.   The fifth Najdorf tournament was Buenos
Aires, April 1994: Argentina versus the rest of the World. Ten Argentinians
played against ten foreigners. The result became 44-56.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "1"]
[White "Spangenberg, Hugo"]
[Black "Szmetan, Jorge"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2490"]
[BlackElo "2430"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

{The sixth Najdorf tournament was Buenos Aires, July 1995. Special guests
among the twelve participants were Van Wely, San Segundo, De Firmian and
Sadler.} 1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. d4 cxd4 5. Nxd4 e6 6. g3 Be7 7. Bg2
O-O 8. O-O Nc6 9. h3 a6 10. a4 Nxd4 $5 11. Qxd4 Qc7 12. a5 Bd7 13. Be3 Bc6 14.
Na4 Rad8 15. Nb6 d5 $5 ({More solid is} 15... Nd7 16. Qc3 Bf6 17. Qb4 Nc5) 16.
Bf4 e5 $1 {Black has to sacrifice a pawn.} ({Not} 16... dxe4 $2 17. Qxf6 $1
Qxb6 18. Qxe7) 17. Bxe5 dxe4 $1 18. Qc3 $1 Bd6 19. Bxf6 gxf6 20. Qxf6 Be5 $6 (
20... Qe7 21. Qf5 $5 Qe5 22. Qg4+ Qg7 {almost equalises.}) 21. Qg5+ Kh8 22. Nc4
Bg7 23. Rfd1 Rxd1+ $5 (23... f5 $1 24. Rxd8 Qxd8 25. Qxd8 Rxd8 {
exchanges heavy pieces.}) 24. Rxd1 f5 25. b4 h6 26. Qd2 Ba4 $6 (26... f4 $1 27.
gxf4 Qxf4 28. Qe3 Qxe3 29. Nxe3 Bc3 {defends well.}) 27. Ne3 Qc3 28. Qd6 $1 Bc6
29. Bf1 Qe5 $2 (29... Qf6 30. Qxf6 Rxf6 31. c4 Ba4 {offers more resistance.})
30. Bxa6 $1 Qxd6 31. Rxd6 Bc3 32. b5 $1 bxa6 33. Rxc6 Bxa5 34. Rxh6+ Kg7 35.
Rxa6 Bd2 36. c4 f4 37. gxf4 Rxf4 38. b6 Be1 39. b7 Rf8 40. Nf5+ {
The young Spangenberg played at grandmaster level.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "3"]
[White "Van Wely, Loek"]
[Black "Sorin, Ariel"]
[Result "1-0"]
[ECO "A52"]
[WhiteElo "2585"]
[BlackElo "2500"]
[Annotator "JvR"]
[PlyCount "161"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nc3 Bxc3+ 7. bxc3 Qe7
8. Qd5 Qa3 9. Rc1 f6 {They play the traditional Budapester Gambit.} 10. exf6
Nxf6 11. Qd3 O-O 12. g3 d6 13. Bg2 Qc5 $6 (13... Qxa2 $6 14. Ng5 $1 {
favours White.}) ({A novelty will become} 13... Ne5 $5 14. Nxe5 dxe5 15. Be3)
14. Ng5 g6 $2 ({Preferable is} 14... Bf5 $1 15. Bd5+ Nxd5 16. Qxd5+ Qxd5 17.
cxd5 Ne7) 15. O-O Kg7 16. Ne4 Nxe4 17. Qxe4 Bd7 18. Be3 $1 Qf5 19. Bd4+ {
White has a great advantage.} Kg8 20. Qxf5 Rxf5 21. Rb1 b6 $5 22. Bd5+ Kf8 23.
e4 Rf7 24. f4 $5 Re8 (24... Re7 $5 25. Bf6 Ree8 26. Rbe1 {also wins for White.}
) 25. Bxf7 Kxf7 26. e5 Na5 27. exd6 cxd6 28. Rbe1 Rc8 29. Rf2 Rxc4 30. Rfe2 Nc6
31. Kg2 b5 32. Bxa7 Rxc3 33. Bb6 d5 34. Rd2 Be6 35. Re3 Rc4 36. Rb3 b4 37. a3
$6 bxa3 $6 (37... Rc3 $1 {grabs a chance for counter-play.}) 38. Rxa3 Bf5 39.
Kf2 Be4 40. g4 Rc1 41. Rh3 Kg7 42. Bd4+ Nxd4 43. Rxd4 Rc2+ 44. Ke1 Rg2 45. g5
Rg1+ 46. Kd2 Rg2+ 47. Kc3 Rc2+ 48. Kb4 Rf2 49. Rh4 Kf7 50. Rxh7+ Ke6 51. Rh4
Kf5 52. Rd1 Rc2 53. Ra1 Rc4+ 54. Kb3 Rc6 55. Ra8 Bc2+ 56. Kb2 Ke4 57. Rg4 Kf3
58. Rg1 d4 $5 59. Rd8 Be4 60. Rxd4 Rc2+ 61. Kb3 Rxh2 62. Re1 {Loek wins slowly.
} Bf5 63. Kc4 Rh8 64. Red1 Re8 65. Kd5 Re7 66. Rf1+ Ke2 67. Ra1 Kf3 68. Ra3+
Kg4 69. Rb4 Re8 70. Rc3 Kh4 71. Rc6 Re1 72. Kd6 Kg4 73. Rc5 Re6+ 74. Kc7 Re8
75. Re5 Rf8 76. Kd6 Rf7 77. Re7 Rf8 78. Ke5 Kg3 79. Reb7 Bc2 80. Rc7 Rf5+ 81.
Ke6 {Van Wely had a great start of 41/2/5.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "6"]
[White "San Segundo Carrillo, Pablo"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2520"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 c5 5. d5 Ba6 6. Qc2 exd5 7. cxd5 g6 8. Nc3
Bg7 9. g3 O-O 10. Bg2 d6 11. O-O Nbd7 12. Re1 Re8 13. h3 b5 14. e4 Qb6 15. Be3
Rac8 16. Bf1 Qb7 17. Bf4 Bf8 18. e5 $5 (18. Qd2 c4 19. Bh6 {
drew in Delemarre - Timman, Wijk aan Zee 1995.}) 18... dxe5 ({The alternative} 
18... Nxd5 $5 19. Nxd5 Qxd5 20. Bg2 Qa8 21. exd6 Bb7 {leads to sharp play.})
19. Nxe5 Nxe5 20. Bxe5 Nd7 21. Bf4 Rxe1 22. Rxe1 b4 23. Bxa6 Qxa6 {
A lot of exchanges have been made.} 24. Ne4 $6 (24. axb4 cxb4 25. Qa4 Qxa4 26.
Nxa4 {keeps the equality.}) 24... bxa3 25. bxa3 c4 $6 {
He could have captured pawn a3.} 26. Bd2 $2 (26. a4 $1 {is alright.}) 26...
Qxa3 27. Bc3 Bg7 28. Bxg7 Kxg7 29. Nc3 Nc5 $1 30. Nb5 Qa5 $2 (30... Qb3 $1 {
tries to win.}) 31. Rb1 Nd3 $2 ({Correct is} 31... c3) 32. Nd6 $1 Rd8 $2 {
The sixty-years-old Panno succumbs under time pressure.} 33. Nb7 Qxd5 34. Nxd8
Qxd8 35. Qxc4 Ne5 36. Qc3 Qf6 37. f4 Nc6 38. Rc1 Nd4 39. Kf2 h5 40. Rd1 Ne6 41.
Qxf6+ Kxf6 42. Kf3 a5 43. Rd6 Ke7 44. Rd5 f5 45. Rxa5 Kf6 46. Ra6 Kf7 47. Ke3
Ke7 48. Ra7+ Kf6 49. Rb7 Nc5 50. Rc7 Ne6 51. Ra7 {Black suffers from zugzwang.}
1-0

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "7"]
[White "De Firmian, Nick"]
[Black "Szmetan, Jorge"]
[Result "1-0"]
[ECO "B05"]
[WhiteElo "2605"]
[BlackElo "2430"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6 6. Ng5 Bf5 7. e6 fxe6 8. g4
Bg6 9. Bd3 Bxd3 10. Qxd3 Nf6 11. Nxe6 Qd7 12. Qe2 Kf7 13. Ng5+ Kg8 14. Rg1 Na6
15. Nc3 Nc7 $5 {Black has problems  with his development.} (15... Re8 16. Ne6
Kf7 17. Nxf8 Rhxf8 {was played in De Firmian - Burgess, Gausdal 1995.}) 16. Be3
Ncd5 17. Bd2 Re8 18. O-O-O e5 19. dxe5 Rxe5 20. Qf3 h5 $6 (20... Nxc3 21. Qxc3
h6 22. Nf3 Re8 {creates a solid position.}) 21. Nxd5 Rxd5 22. h3 hxg4 23. hxg4
Rh4 24. Qe3 $1 Rxg4 25. f4 Rxg1 26. Rxg1 Qf5 27. Bc3 Rc5 {Black counters.} 28.
Ne6 $1 Rc4 $2 {He miscalculates.} (28... Rxc3 $1 29. bxc3 Nd5 30. Qe1 Qf6 $1
31. Nxf8 Kxf8 32. Kb2 b5 {defends actively.}) 29. Nxg7 $1 Bxg7 30. Qe7 $1 Qxf4+
31. Kb1 Qg4 32. Rxg4 Rxg4 33. a3 Rg1+ 34. Ka2 Nd5 35. Qe6+ Kh7 36. Qh3+ Kg8 37.
Qc8+ Kh7 38. Bd2 Nf6 39. Bc3 Nd5 40. Bd2 Nf6 41. Qxb7 Ne4 42. Be3 {
White has a great material advantage.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "7"]
[White "Zarnicki, Pablo"]
[Black "Sadler, Matthew"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2570"]
[BlackElo "2565"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O
O-O 9. f4 Qc7 10. Kh1 b5 11. Bf3 Nbd7 12. a3 Bb7 13. f5 $5 ({An alternative is
} 13. Qe2) 13... Rac8 14. g4 $5 {This risky advance is a part of white's plan.}
d5 $1 {Black makes the standard answer.} 15. exd5 e4 $5 (15... Nb6 $1 {
regains the pawn quickly.}) 16. Bg2 h6 $1 17. Bf4 Bd6 18. Bxd6 Qxd6 19. Nxe4
Nxe4 20. Bxe4 Rfe8 {Black has sacrificed two pawns for a counter in the centre.
} 21. Bg2 Nf6 22. c3 Re3 23. Rc1 $6 (23. Re1 $5 Rxe1+ 24. Qxe1 Nxg4 25. Qg3
Qxg3 26. hxg3 {exchanges heavy pieces.}) 23... Bxd5 24. Bxd5 Nxd5 $1 25. Rc2 $2
(25. Qd2 Rce8 26. Rf2 {defends properly.}) 25... Rce8 $5 26. Rd2 $5 Qc6 27. Nd4
Qa8 28. Nf3 $2 (28. Kg1 $1 Nf4 $1 29. Rxf4 Re1+ 30. Rf1 Rxd1 31. Rfxd1 {
offers more resistance.}) 28... Nf4 $1 29. Kg1 Qe4 $1 30. Rd8 Rxd8 31. Qxd8+
Kh7 32. Qd1 Ne2+ 33. Kg2 Qxg4+ 34. Kh1 Qe4 35. Kg2 Nf4+ 36. Kg1 Re2 37. Qd4
Qxf5 38. Nh4 Nh3+ {Sadler countered brilliantly.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "8"]
[White "Ricardi, Pablo"]
[Black "Van Wely, Loek"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2545"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. Bd3 d5 5. e5 Nfd7 6. Bc2 {
White choses a remarkable development.} b6 7. O-O Ba6 8. Re1 Nc6 9. d4 Be7 10.
a3 Rc8 11. Nbd2 Qc7 $5 ({Known is} 11... cxd4 12. cxd4 g5 $5) 12. Bb1 g5 $5 13.
h3 $5 (13. Nf1 $1 g4 $5 14. Ng5 h5 15. Be3 {defends actively.}) 13... h5 $1 14.
g4 $6 {He weakens the kingside.} Rg8 $5 15. Nf1 hxg4 16. hxg4 cxd4 17. cxd4 Na5
18. Ng3 Qxc1 19. Qxc1 Rxc1 20. Rxc1 Nb3 21. Bh7 Rh8 22. Bc2 Nxa1 23. Rxa1 {
The chances are equal after the exchanges.} Nb8 24. Rc1 Kd8 25. Ba4 Bc4 26. Kg2
a5 27. Nh5 b5 28. Bd1 Nd7 29. Nd2 $2 ({Preferable is} 29. a4 $1) 29... a4 $1
30. Nf3 Kc7 31. Be2 Kb6 32. Ng3 Ka5 33. Nd2 Rh4 34. Bd1 $2 (34. Nxc4+ bxc4 35.
Nh5 Nb8 36. Bf3 Nc6 37. Rd1 {offers more resistance.}) 34... f6 $1 35. exf6
Bxf6 {Black has a great positional advantage.} 36. Nf3 Rxg4 37. Ne5 Nxe5 38.
dxe5 Rxg3+ $1 39. fxg3 Bxe5 40. Rc2 b4 $6 (40... Bb3 $1 41. Re2 Bxb2 $1 42.
Bxb3 axb3 43. Rxb2 Ka4 {wins nicely.}) 41. axb4+ $6 (41. Be2 $1 Kb5 {
also wins for Black.}) 41... Kxb4 42. Bg4 Kb3 43. Bd1 Bxb2 44. Rd2+ Ka3 45.
Bxa4 Bc3 46. Rc2 d4 47. Be8 Kb3 48. Rc1 Kb2 49. Rg1 g4 50. Kf2 Bd2 51. Rh1 Be3+
52. Ke1 d3 53. Kd1 Bb3+ {Van Wely led by 61/2/8.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "8"]
[White "San Segundo Carrillo, Pablo"]
[Black "Sorin, Ariel"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2520"]
[BlackElo "2500"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. h3 c6 7. Bg5 a6 8. Bd3 b5
9. O-O Nbd7 10. e5 dxe5 11. dxe5 Nc5 12. Bc2 Nfd7 13. Qe2 $5 (13. Re1 {
occurred in Ehlvest - Kozul, Biel 1993.}) 13... f6 $2 (13... Ne6 $1 {equalises.
}) 14. Be3 $1 b4 15. Na4 Nxa4 16. Bxa4 Qc7 17. exf6 exf6 18. c5 $1 {
Black suffers from restriction.} a5 19. Rfd1 Ba6 20. Qd2 Ra7 $6 ({Or} 20...
Rfd8 $5 21. Qd6 Rac8) 21. Qc2 Ne5 22. Nxe5 fxe5 23. Qe4 Bb7 24. Rd6 Kh8 25.
Rad1 Qf7 26. Rd7 Qxa2 $5 27. Rxg7 $1 Kxg7 28. Qxe5+ Kg8 29. Bd4 Bc8 30. Re1 Be6
31. Qh8+ Kf7 32. Qg7+ Ke8 33. Bxc6+ {
San Segundo trailed by one point on Van Wely.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "9"]
[White "Van Wely, Loek"]
[Black "Spangenberg, Hugo"]
[Result "0-1"]
[ECO "D24"]
[WhiteElo "2585"]
[BlackElo "2490"]
[Annotator "JvR"]
[PlyCount "98"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. e4 c5 4. d5 Nf6 5. Nc3 e6 6. Nf3 exd5 7. e5 Nfd7 8. Bg5
Be7 9. Bxe7 Qxe7 10. Nxd5 Qd8 11. Qc2 Nb6 12. O-O-O Nxd5 13. Bxc4 O-O 14. Bxd5
Qe7 15. Kb1 $5 ({Known is} 15. h4) 15... Na6 16. a3 Nc7 17. Be4 h6 18. Rc1 $5
Ne6 19. Rhd1 Rb8 20. g3 b5 21. Nh4 b4 22. axb4 $6 (22. Nf5 $1 Qc7 23. a4 {
continues the initiative.}) 22... Rxb4 23. Rd6 $2 {
A white pawn is going to fall.} Ng5 $1 24. Bg2 Qxe5 25. Rd5 Qf6 26. Rxc5 {
Van Wely has regained matter but he will be under attack.} Ba6 27. Rc6 Bd3 $1 {
Black wins an exchange.} 28. Rxf6 Bxc2+ 29. Rxc2 gxf6 30. Nf5 Kh7 31. Ne3 Rd8
32. Nd5 Rd4 33. f4 Rd1+ $5 34. Ka2 R1xd5 $6 (34... Ne6 $1 35. Nxf6+ Kg7 {
keeps the exchange.}) 35. Bxd5 Rxd5 36. fxg5 fxg5 37. Rc7 Ra5+ $1 38. Kb3 Kg6
39. g4 Ra1 40. Kb4 $2 (40. h3 $1 Rf1 41. Rc3 {
preserves survival chances in the rook ending.}) 40... Rh1 $1 41. Rxa7 Rxh2 42.
b3 Rg2 43. Kc5 Rxg4 44. b4 Rg1 45. b5 Rc1+ 46. Kd6 Rb1 47. Kc6 h5 48. b6 h4 49.
b7 h3 {Van Wely still led, despite the loss.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 6"]
[Date "1995.??.??"]
[Round "11"]
[White "Van Wely, Loek"]
[Black "Giardelli, Sergio "]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2585"]
[BlackElo "2445"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1995.07.??"]
[SourceDate "1999.07.01"]

{When Van Wely lost again in the penultimate round, San Segundo took the lead.
} 1. c4 c5 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nf3 O-O 6. d4 cxd4 7. Qxd4 Nc6 8.
Qh4 Qa5 $5 9. O-O Ne5 $6 {He should not exchange yet.} (9... d6 10. Nd5 Be6 {
continues the development of the queenside.}) 10. Nd5 $5 Nxd5 11. cxd5 Nxf3+ $6
({Preferable is} 11... d6 $1) 12. Bxf3 Re8 13. d6 $1 exd6 14. Rd1 d5 $6 {
Black moves too slowly.} ({Better is} 14... Rb8 15. Bd5 b6 16. Qf4 Rf8 17. Qxd6
Bb7) 15. Bh6 $1 Bxb2 $5 ({The seemingly useful} 15... d6 $6 {is answered by}
16. Rxd5 Qb6 17. Bxg7 Kxg7 18. b3 Be6 19. Rd4) 16. Rab1 Bg7 17. Bxd5 d6 $2 (
17... Bxh6 18. Qxh6 Qc5 19. Rb3 Qf8 {defends against a strong attack.}) 18.
Bxg7 Kxg7 19. Bxf7 $1 Rxe2 ({Not} 19... Kxf7 $2 20. Qxh7+ Kf6 21. Rxd6+ Be6 22.
Rxb7) 20. Bd5 $5 Qc5 21. Qf4 $5 Re7 ({Or} 21... Qc7 22. Qd4+ Kh6 23. Qh4+ Kg7
24. Re1 $1) 22. Rbc1 Qb6 23. Re1 Qd8 24. Qd4+ {Loek caught up with the leader.
Final standings: Van Wely and San Segundo Carrillo 71/2/11, De Firmian and
Spangenberg 7, Sadler 61/2, Ricardi 6, Hoffman and Panno 5, Zarnicki 41/2,
Giardelli 4, Szmetan and Sorin 3.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 7"]
[Date "1996.??.??"]
[Round "1"]
[White "Almasi, Zoltan"]
[Black "Ricardi, Pablo"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2650"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1996.04.??"]
[SourceDate "1999.07.01"]

{The seventh Najdorf tournament was Buenos Aires 1996. Special guests were
Tiviakov, Magem Badals, Almasi and Milov.} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.
Nxd4 Nf6 5. Nc3 a6 6. f4 e6 7. Qf3 Qb6 8. Nb3 Nc6 9. g4 Be7 10. Be3 Qc7 11. g5
Nd7 12. O-O-O b5 13. Bd3 Nb4 14. Kb1 Bb7 15. Qh3 Nxd3 $5 ({
Usual is the immediate} 15... O-O) 16. cxd3 O-O 17. Rhg1 Rac8 18. Rc1 Nc5 19.
Bd4 $5 {Almasi attacks the centre of the defence.} Qd7 $2 (19... Nxb3 $5 20.
axb3 Qd7 21. Nd5 $5 Bxd5 22. exd5 Rxc1+ 23. Rxc1 a5 {exchanges a lot.}) 20. Bf6
$1 Rfe8 $2 (20... Rfd8 $1 21. Rg4 Nxb3 22. axb3 d5 23. Rh4 dxe4 24. Bxe7 Qxd3+
{offers more resistance.}) 21. Rg3 $2 (21. Rg4 $1 e5 22. Bxg7 $1 {
wins for White.}) 21... b4 $2 (21... Nxd3 $1 22. Rxd3 {(Almasi)} b4 $1 23. Nd5
Rxc1+ 24. Nxc1 Bxd5 25. exd5 gxf6 {defends well.}) 22. Bxg7 $2 (22. Nxc5 Rxc5
23. Bxg7 $1 {triumphs.}) 22... bxc3 $4 (22... Nxd3 $1 23. Rxd3 bxc3 24. Bxc3
Bxe4 {turns the tables.}) 23. Nxc5 Rxc5 24. Bd4 Bf8 25. g6 $1 h5 $5 ({
The pointe is} 25... fxg6 26. Rxg6+ $1 hxg6 27. Qh8+ Kf7 28. Qh7+ Bg7 29. Qxg7#
{(Almasi).}) 26. gxf7+ Kxf7 27. Bxc5 dxc5 28. Qxh5+ Ke7 29. Qxc5+ Qd6 30. Qxc3
Rc8 31. Qd2 Rxc1+ 32. Qxc1 Bh6 33. e5 Qc6 34. Qxc6 Bxc6 35. f5 Bf4 36. Rg7+ Kf8
37. Rg6 Bd5 38. fxe6 Ke7 39. h4 Bxe5 40. h5 Bxe6 41. Kc2 Bf6 42. h6 Bf5 43. Rg1
{Computer analyses reveal grave errors.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 7"]
[Date "1996.??.??"]
[Round "2"]
[White "Magem Badals, Jordi"]
[Black "Ricardi, Pablo"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2565"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1996.04.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e6 6. Nc3 Nc6 7. Be3 Be7 8. Qd2
a6 9. O-O-O O-O 10. g4 Nxd4 11. Qxd4 b5 12. g5 Nd7 13. h4 Rb8 14. Qd2 Bb7 15.
h5 Ne5 16. f4 b4 17. Nd5 exd5 18. fxe5 Qa5 {
Again Ricardi plays a sharp variation of the Sicilian Defence.} 19. exd6 $5 (
19. Kb1 $2 d4 $1 {won for Black in Rodriguez - Ricardi, Villa Gesell 1996.}) ({
Best seems to be} 19. h6 $1 Qxa2 20. Qd4) 19... Qxa2 $2 (19... Bxd6 $1 20. Kb1
dxe4 {offers more resistance.}) 20. Qd4 Bxd6 21. e5 $2 (21. h6 $1 f6 22. gxf6 {
wins at once.}) 21... Bc7 $2 (21... Bxe5 $1 22. Qxe5 Rbe8 23. Qd4 Re4 {
fights back.}) 22. h6 $1 Bb6 23. Qxb6 d4 24. hxg7 $1 Rfc8 ({The pointe is} 
24... dxe3 25. gxf8=Q+ Rxf8 26. Qxe3 Bxh1 27. Bd3) 25. Bd3 $1 (25. Bd3 dxe3 $5
26. Bxh7+ Kxg7 27. Qh6+ Kh8 28. Qf6# {ends the game.}) 1-0

[Event "Buenos Aires"]
[Site "Najdorf 7"]
[Date "1996.??.??"]
[Round "3"]
[White "Granda Zuniga, Julio"]
[Black "Sorin, Ariel"]
[Result "1-0"]
[ECO "A52"]
[WhiteElo "2600"]
[BlackElo "2505"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1996.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nbd2 Qe7 7. e3 Ngxe5
8. Be2 Nxf3+ 9. gxf3 $5 ({Usual is} 9. Bxf3 Ne5 10. Be2) 9... O-O 10. a3 Bd6
11. Bxd6 Qxd6 12. Qc2 f5 13. f4 Qf6 14. Nf1 $5 d6 15. Ng3 Kh8 $6 ({
More active is} 15... Be6 16. Nh5 Qh4) 16. Nh5 Qe7 17. Rg1 Rf7 18. Qc3 Be6 $5
19. O-O-O Rg8 20. Rg5 Nb8 $1 21. Bd3 Nd7 22. Rdg1 b6 $6 (22... Nc5 23. Bc2 Ne4
24. Bxe4 fxe4 {ends a useful knight manoeuvre.}) 23. Bc2 a5 24. b3 Nf6 25. Ng3
d5 26. Kb2 dxc4 $2 (26... Ne4 $1 27. Nxe4 dxe4 {equalises.}) 27. Nxf5 $1 Bxf5
28. Rxf5 Ne8 29. Re5 Qh4 30. Qxc4 Nd6 31. Qd5 Qxf2 $5 32. Rg2 $1 Qh4 33. Qd4 $6
(33. Bxh7 $1 Qxh7 34. Rh5 {wins quickly.}) 33... Rgf8 $6 34. Rgg5 $1 Qf2 $5 35.
Rh5 $1 Rxf4 ({Or} 35... Kg8 36. Rxh7 $1 Qxc2+ 37. Kxc2 Kxh7 38. Qd3+) 36. Rxh7+
Kg8 37. Rxg7+ $1 Kxg7 38. Re7+ Kh6 39. Qg7+ Kh5 40. Qg6+ {
White delivers mate on the next move.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 7"]
[Date "1996.??.??"]
[Round "3"]
[White "Milov, Vadim"]
[Black "Tiviakov, Sergei"]
[Result "0-1"]
[ECO "E49"]
[WhiteElo "2585"]
[BlackElo "2625"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1996.04.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8.
Bxc4 c5 9. Bb2 Qa5 10. Qd2 Nbd7 $5 11. Rc1 $6 ({The alternative is} 11. Nf3)
11... b5 $1 12. Bd3 Bb7 13. Nf3 Rac8 $1 14. c4 $1 Qxd2+ 15. Kxd2 bxc4 16. Rxc4
Ne4+ 17. Bxe4 Bxe4 18. Rhc1 Bd5 19. Ra4 $2 ({Preferable is} 19. R4c2 $5 Bb3 20.
Rc3 c4 {(Tiviakov)} 21. e4 $1 {and Black has little advantage.}) 19... Nb6 $1
20. Rxa7 Nc4+ 21. Rxc4 ({Or} 21. Kc2 cxd4 22. Bxd4 Nxe3+ {(Tiviakov).}) 21...
Bxc4 {Black has gained an exchange.} 22. Ne5 cxd4 23. Bxd4 $5 Bb3 $5 24. Nd7 $5
Rfd8 25. Bb6 Ra8 $1 26. Rxa8 Rxa8 27. Kc3 Bd5 28. Kb4 Bxg2 29. a4 f6 30. a5 Kf7
31. Bc5 Rd8 32. Nb6 Rd2 33. Nc4 Rxf2 34. a6 Ra2 35. a7 Bc6 36. h4 Kg6 37. Bb6
Kh5 38. Kc5 Bd5 39. Nd6 Kxh4 40. Ne8 Rc2+ 41. Kd4 Rc4+ 42. Kd3 Rg4 43. Nc7 Ra4
{Tiviakov had won for the second time.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 7"]
[Date "1996.??.??"]
[Round "4"]
[White "Magem Badals, Jordi"]
[Black "Slipak, Sergio"]
[Result "1-0"]
[ECO "C80"]
[WhiteElo "2565"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1996.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 a6 6. Ba4 b5 7. Bb3 d5 8. dxe5
Be6 9. Be3 Bc5 10. Qd3 Ne7 11. Nc3 Bxe3 12. Qxe3 Nf5 13. Qe1 $5 ({Known is} 13.
Qd3 Nc5 14. Qd2) 13... Nc5 14. Rd1 c6 15. Ne2 O-O 16. c3 Nxb3 17. axb3 Qb6 18.
b4 a5 19. Ned4 Nxd4 20. Nxd4 axb4 $6 21. cxb4 c5 $6 {
The blockader becomes stronger.} ({Preferable is} 21... Bd7 22. Qc3 Rfe8) 22.
bxc5 Qxc5 23. Qd2 Qb6 24. h3 Rfc8 25. Kh2 Qa5 $5 26. Qe3 $5 Qb4 27. Rd2 Rc4 28.
f4 Ra4 $2 {Black loses control over the eighth rank.} ({Correct is} 28... Bd7)
29. Rfd1 $5 {White misses a tactical line, but he succeeds anyway.} (29. Nxe6
fxe6 30. Qb6 $1 Qxd2 31. Qxe6+ Kf8 32. Qd6+ Ke8 33. e6 {wins quickly.}) 29...
Ra2 30. f5 $1 Bc8 31. f6 gxf6 $5 32. Qg3+ Kh8 33. exf6 Qf8 34. Re1 $1 Be6 35.
Rxe6 $5 fxe6 36. Nxe6 Qf7 37. Qg7+ Qxg7 38. fxg7+ Kg8 39. Rf2 {
Magam Badals won his second game.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 7"]
[Date "1996.??.??"]
[Round "7"]
[White "Spangenberg, Hugo"]
[Black "Sorin, Ariel"]
[Result "1-0"]
[ECO "C83"]
[WhiteElo "2505"]
[BlackElo "2505"]
[Annotator "JvR"]
[PlyCount "126"]
[EventDate "1996.04.??"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. c3 Be7 10. Nbd2 O-O 11. Bc2 f5 12. Nb3 Qd7 13. Nfd4 Nxd4 14. Nxd4 c5 15.
Nxe6 Qxe6 16. f3 Ng5 17. a4 g6 18. Kh1 Kh8 19. Bxg5 $5 Bxg5 20. f4 Be7 21. Qf3
{White has little advantage in the Open Ruy Lopez.} Rfd8 22. h3 b4 23. g4 b3 $5
{Black makes a temporary sacrifice.} 24. gxf5 gxf5 25. Bxb3 Rab8 26. Ba2 $5
Rxb2 27. Rfb1 Rxb1+ 28. Rxb1 c4 29. Rd1 Rd7 30. Qh5 Bc5 31. Bb1 Rf7 32. Qg5 Rf8
33. Bc2 Be3 34. Qg3 Bc5 35. Qf3 Rd8 36. Qh5 Rf8 37. Kh2 Bb6 38. Rb1 Be3 39. Qf3
Bb6 40. Kh1 Bc5 41. a5 d4 42. cxd4 Bxd4 43. Rd1 Bc5 44. Ba4 Rb8 45. Qc3 Rg8 46.
Bd7 Qg6 47. e6+ $1 {White takes the initiative again.} Rg7 48. Bc6 h6 49. Qxc4
Qg3 50. Qf1 Qc3 $2 ({Correct is} 50... Qe3 $1 51. Bd5 Rg3 52. Kh2 Bd6 53. Bg2
Qxf4 {and Black achieves equality.}) 51. Qf3 Qxf3+ 52. Bxf3 Re7 {
He does not not regain the pawn.} 53. Bd5 Be3 $5 (53... Kg7 $1 54. Bc4 Kf6 {
defends well.}) 54. Bc4 Bxf4 55. Rd8+ $5 Kg7 56. Ra8 Rc7 57. Bxa6 Kf6 58. Bc8
Be3 59. Bd7 Ra7 $2 {The black rook goes to an isolated spot.} (59... Rc1+ $1
60. Kg2 Rc2+ 61. Kf3 Bc5 62. Rc8 h5 $1 63. e7 $5 Rc3+ {draws.}) 60. Rf8+ $1 Ke7
61. Rxf5 {Spangenberg has gained two pawns.} Kd6 62. Rf3 Bc5 63. Rf6 Rxa5 {
White captures the h-pawn and wins easily.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 7"]
[Date "1996.??.??"]
[Round "9"]
[White "Sorin, Ariel"]
[Black "Tiviakov, Sergei"]
[Result "0-1"]
[ECO "E16"]
[WhiteElo "2505"]
[BlackElo "2625"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1996.04.??"]
[SourceDate "1999.07.01"]

{Magem Badals had taken the lead in the penultimate round. When the last round
began, he led by half-a-point on Tiviakov, Spangenberg and Almasi.} 1. d4 Nf6
2. c4 e6 3. Nf3 b6 4. g3 Bb4+ 5. Bd2 Be7 6. Nc3 Bb7 7. Bg2 c6 8. Qa4 O-O 9. Ne5
d5 10. O-O Nfd7 11. Bf4 $6 (11. Nf3 Nf6 12. Ne5 {draws.}) 11... Nxe5 12. Bxe5
Nd7 13. Bf4 a6 $1 14. Qb3 b5 $1 15. cxd5 cxd5 16. Rfc1 Qb6 17. e3 Rfc8 18. g4
Rc4 {Black takes the initiative on the queenside.} 19. a4 $5 b4 20. a5 $6 {
White has a weakness on a5.} Qd8 21. Ne2 Rac8 22. Qa2 $5 Rxc1+ 23. Rxc1 Bc6 24.
Bf1 Bb5 25. b3 g5 26. Bg3 Nf6 27. f3 Ne8 28. Be1 Bd6 29. Qa1 $2 {
Sorin allows an attack.} ({Better is} 29. Rxc8 Qxc8 30. e4) 29... Rxc1 30. Nxc1
Bxh2+ $1 31. Kxh2 Bxf1 32. Kg1 Bb5 33. Bxb4 h5 $5 34. Qc3 $6 (34. Qb2 hxg4 35.
fxg4 Qc7 36. Be1 {prolongs the game.}) 34... Qf6 $1 35. gxh5 $5 Qxf3 36. Qd2
Nf6 37. Qf2 Qg4+ 38. Kh2 Ne4 39. Qg2 Qxh5+ 40. Qh3 Qd1 41. Qh6 Qc2+ {Tiviakov c
aught up with the leader. Final standings: Tiviakov and Magem Badals 6/9,
Granda Zuniga, Spangenberg and Almasi 51/2, Zarnicki and Milov 41/2, Sorin 3,
Slipak 21/2, Ricardi 2.   The eighth Najdorf tournament was played in May.
Morovic and Sutovsky shared the first place. Miguel died on 5 July 1997.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.18"]
[Round "1"]
[White "Polgar, Judit"]
[Black "Leitao, Rafael"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2656"]
[BlackElo "2567"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

{Open Najdorf tournaments were played in 1998 and 1999.   A qualification
event happened from 9 until 16 ix 2000. 48 players carried out four rounds of
matches. Bologan, Milov, Ricardi, Leitao, Pierrot and Flores entered the main
event. Polgar, Short, Karpov and Milos joined them. They played a closed
tournament in Buenos Aires from 18 until 27 ix 2000.} 1. e4 c5 2. Nf3 d6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg7 10. Be2 h5
11. Bxg4 hxg4 12. Nd5 Nc6 13. Nf5 Bxf5 14. exf5 Bxb2 15. Rb1 Qa5+ 16. Qd2 Bd4
17. Qxa5 Nxa5 18. O-O $5 (18. Nc7+ Kd7 19. Nxa8 Rxa8 {
drew in Anand - Topalov, Dortmund 1999.}) 18... Kd7 $5 (18... Rc8 19. Rfe1 Rc5
20. Nxe7 Be5 {equalises.}) 19. Rb4 Ba7 20. Re1 $1 Rhe8 21. Rxg4 Rac8 22. Rge4
Nc6 23. c3 f6 24. Re6 Ne5 25. Rb1 b5 26. Rd1 Rc4 $6 27. h3 $6 (27. Bxe5 $1 fxe5
28. Rg6 b4 29. cxb4 Rc2 {(Polgar)} 30. Ne3 {brings a plus.}) 27... Bc5 $2 ({
Preferable is} 27... Nf7 $1 {and Black preserves his main defender.}) 28. Bxe5
$1 fxe5 29. Rg6 Rf8 30. Rxg5 Rf7 31. g4 a5 32. Rg6 b4 33. cxb4 axb4 34. Rd2 Bd4
35. h4 Kc6 36. Ne3 Rc3 37. Re2 Kc5 38. h5 e4 39. Kg2 d5 40. h6 Ra3 41. Rg8 {
Judit had a great start.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.20"]
[Round "3"]
[White "Pierrot, Juan"]
[Black "Karpov, Anatoly"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2423"]
[BlackElo "2699"]
[Annotator "JvR"]
[PlyCount "74"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

{They played in the Museo de los Ninos.} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4
Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O Be6 9. Be3 Nbd7 10. Qd3 Rc8 $5 11. f3
O-O 12. Kh1 Qc7 13. a4 Rfd8 14. Qd2 Nb6 15. Bxb6 Qxb6 16. Nd5 Nxd5 17. exd5 Bd7
$1 {Black has the two bishops.} 18. a5 Qa7 19. c4 h6 20. Bd3 Bg5 21. Qe2 Re8
22. Nd2 $6 (22. Qc2 {makes a waiting move.}) 22... f5 $1 23. Rfe1 $6 Qc5 $1 {
Black controls the queenside.} 24. b3 Qb4 25. Nf1 Rc5 26. Qa2 Bd8 27. Qc2 e4 $6
{A premature move.} 28. fxe4 Bf6 29. Rab1 Rxa5 30. Qf2 $6 (30. e5 $1 Rxe5 31.
Rxe5 Bxe5 32. Bxf5 Bxf5 33. Qxf5 {equalises the game.}) 30... Ra3 31. e5 $2 ({
Better is} 31. Ng3 $1 Bh4 32. Qf4 Bg5 33. Qf2) 31... Bxe5 32. Bxf5 Bxf5 33.
Qxf5 Rxb3 {Black has won a pawn.} 34. Qc2 Rxb1 35. Rxb1 Qc3 36. Qg6 Rf8 37. Qg4
Qd3 {Karpov had won his third game in a row.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.20"]
[Round "3"]
[White "Polgar, Judit"]
[Black "Short, Nigel"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2656"]
[BlackElo "2677"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4
Bc5 9. Qd2 a6 10. O-O-O Nxd4 11. Bxd4 O-O 12. Bxc5 Nxc5 13. Qd4 b6 $5 ({
The alternative is} 13... Qc7) 14. Kb1 Bb7 15. Bd3 Rc8 16. Rhe1 Qc7 17. g4 f6
$5 18. f5 $1 Nxd3 19. cxd3 exf5 20. gxf5 fxe5 21. Rxe5 Qc5 $5 22. Qg4 $5 {
The exchange of queens leads to little advantage.} b5 23. d4 Qd6 24. h4 Rc7 25.
Re6 Qd8 26. Rf1 Rcf7 27. Re5 b4 28. Nd1 a5 29. Ne3 Kh8 30. h5 a4 31. Qg2 $5 b3
32. a3 Qh4 33. Rd1 h6 34. Qe2 Rc7 35. Qb5 $6 Re7 $2 (35... Bc6 $1 36. Qe2 Rfc8
{gains an edge.}) 36. f6 $1 Rxe5 37. fxg7+ Kxg7 38. dxe5 Qe4+ 39. Ka1 Rf7 $2 (
39... d4 $5 40. Qd7+ Kh8 41. Qe7 {favours White.}) 40. Rg1+ Kh7 41. Ng4 $1 Bc6
42. Qxc6 Qxg4 43. Qg6+ $1 {Judit won her second game.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.21"]
[Round "4"]
[White "Bologan, Viktor"]
[Black "Milov, Vadim"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2641"]
[BlackElo "2626"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Bc5 7. Nb3 Be7 8. Qg4
g6 9. Qe2 Nc6 $5 10. O-O {White has a pleasant game.} d6 11. a4 b4 12. Nd1 a5
13. Bb5 Bd7 14. c4 $1 Qc7 (14... bxc3 $6 15. Nxc3 $1 {favours White.}) 15. f3
h5 16. Nf2 Nf6 17. Bg5 O-O 18. Rfd1 Rfd8 19. Rac1 Be8 $5 20. Qd2 e5 21. Nd3 Nh7
22. Be3 Nf8 $6 {The king's knight should retreat.} 23. Qf2 $1 Rab8 24. f4 $1
Qb7 $2 (24... Nd7 {assists the defence.}) 25. Rf1 exf4 $2 26. Bxf4 $2 (26. Nxf4
$1 Ne5 27. Nd5 Ng4 28. Nxa5 {wins quickly (Bologan).}) 26... Ne6 27. Bg3 Bg5
28. Rce1 Rbc8 29. e5 d5 $5 30. Ndc5 Qe7 31. h4 Bh6 32. cxd5 Rxd5 33. Ne4 Bg7
34. Nd6 Rc7 35. Nxa5 $1 Nxe5 ({Or} 35... Nxa5 36. Bxe8) 36. Nxe8 Ng4 37. Nxc7
Rxb5 $5 38. Nc6 Qd7 39. Qxf7+ $1 {Bologan played a fine game.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.21"]
[Round "4"]
[White "Karpov, Anatoly"]
[Black "Polgar, Judit"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2699"]
[BlackElo "2656"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

{Karpov and Polgar fought for the lead.} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6
5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8. Bc3 d5 9. Ne5 Nfd7 10. Nxd7 Nxd7 11. Nd2 O-O
12. O-O Nf6 13. e4 b5 14. Re1 dxe4 15. Qc2 Rc8 16. Rad1 Nd5 17. Bb2 f5 $1 {
Judit sacrifices the knight again.} (17... Nb4 $6 18. Qxe4 bxc4 19. bxc4 Nxa2 {
led to a white plus in Dydyshko - Huzman, Batumi 1999.}) 18. cxd5 cxd5 19. Qb1
b4 20. Nf1 (20. Bf1 $1 {fights for an advantage.}) 20... Qb6 21. f3 $5 Bf6 22.
Ne3 Rc3 $1 23. Bxc3 bxc3 {Black has two pawns for a rook.} 24. Nc2 $6 ({
Preferable is} 24. fxe4 $1 fxe4 25. Nc2 {(Polgar).}) 24... e5 $6 (24... Bxd4+
$1 25. Nxd4 e5 26. fxe4 exd4 {gains a plus (Polgar).}) 25. Ne3 exd4 26. Nxd5 $1
Qc5 27. Nxf6+ Rxf6 {The black passed pawns look threatening.} 28. b4 $1 Qc4 $1
29. Qb3 (29. fxe4 c2 30. Qc1 cxd1=Q 31. Qxc4+ Bxc4 32. Rxd1 {also equalises.})
29... d3 30. Qxc4+ Bxc4 31. Bf1 Rc6 ({The alternative is} 31... Ba6 $5 32. fxe4
fxe4 33. Rxe4 c2 34. Ree1 cxd1=Q 35. Rxd1 Rf3 {(Polgar).}) 32. fxe4 d2 33. b5
Rc5 34. Bxc4+ Rxc4 35. exf5 {White returns the rook.} ({Or} 35. Rf1 $5 Rxe4 36.
Kg2 Rd4 37. Rxf5 c2 38. Rff1) 35... dxe1=Q+ 36. Rxe1 Kf7 37. Rc1 Kf6 38. Kf2
Ra4 39. Rc2 Ra5 40. Ke3 Kxf5 {Karpov kept on top of the standings.} 1/2-1/2

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.24"]
[Round "7"]
[White "Milov, Vadim"]
[Black "Ricardi, Pablo"]
[Result "1-0"]
[ECO "D86"]
[WhiteElo "2626"]
[BlackElo "2488"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8.
Ne2 Nc6 9. d5 Na5 10. Bb5+ Bd7 11. Qa4 b6 12. O-O Bxb5 $5 ({Known is} 12... a6
13. Bxd7+ Qxd7) 13. Qxb5+ Qd7 14. Qd3 e6 15. Bg5 h6 16. Bd2 $6 ({Preferable is
} 16. Be3 O-O 17. Rad1) 16... exd5 $6 (16... Rd8 $1 17. Rad1 Qa4 {
gains an edge.}) 17. Nf4 $1 O-O-O $6 (17... d4 $1 18. Nd5 Nc6 {
fights for the centre.}) 18. Nxd5 Kb7 19. Rac1 c4 20. Qc2 f5 21. f3 Nc6 22. Bf4
fxe4 23. fxe4 Qe6 24. Nc7 Qe7 $2 (24... Qc8 $1 25. Nd5 g5 {defends well.}) 25.
Qa4 $1 Be5 26. Nd5 $1 Qd6 27. Qxc4 {
White has a positional and material advantage.} Rhf8 28. Bxe5 Qxe5 29. Qd3 Qg5
30. Rb1 Ne5 31. Qd4 Rxf1+ 32. Rxf1 Rd7 33. h3 h5 34. a4 Nc6 35. Qf6 Qg3 36. Qe6
Qd6 37. Rf6 $1 Qxe6 38. Rxe6 Rg7 39. Kf2 g5 40. Ke3 g4 41. h4 Rf7 42. Rf6 Rh7
43. Kf4 Nb8 44. e5 Nd7 45. Rd6 Rf7+ 46. Nf6 Nc5 47. Kf5 Nxa4 48. e6 Rg7 49. Ne8
{Milov played a solid game.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.24"]
[Round "7"]
[White "Pierrot, Juan"]
[Black "Bologan, Viktor"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2423"]
[BlackElo "2641"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 d6 7. Bc4 Nb6 8. Bb3
dxe5 9. Nxe5 Nc6 10. Nxc6 bxc6 11. O-O Be7 12. Nc3 O-O 13. Bf4 Ba6 14. Re1 Bc4
15. Be5 $5 Bxb3 16. Qxb3 a5 $5 17. Ne4 Nd5 18. Qg3 g6 19. Rad1 a4 20. Qh3 Qd7
21. Nc5 $1 Qc8 22. Qh6 f6 $1 23. Bg3 Bxc5 24. dxc5 Rf7 25. Rd2 Rb7 26. Rde2 e5
27. f4 exf4 28. Bxf4 Qf8 29. Qxf8+ Kxf8 30. Bd6+ Kf7 31. a3 $5 Ra5 32. Rd1 Ra6
33. Rd4 h5 34. g4 hxg4 35. Rxg4 Ra8 36. Rh4 Kg7 37. Kf1 Rb3 38. Ke1 g5 $1 {
Black takes the initiative.} 39. Rhe4 Rh3 40. Re6 Ra5 41. Kd1 $2 (41. Re8 $1
Rf3 42. Rc8 Ra6 43. Rb8 {brings equal chances.}) 41... Kg6 42. Rf2 Kf7 43. Rfe2
Rh4 44. R6e4 Rxe4 45. Rxe4 Ra8 46. Rd4 f5 $1 47. Ke2 Kf6 48. Kf2 Ra7 $1 49. h4
$5 (49. h3 Rb7 $1 50. Rxa4 Rxb2+ 51. Kf3 Rb3+ 52. Kg2 Ne3+ {
leads to a black attack.}) 49... g4 $1 50. Bf4 Nxf4 51. Rxf4 Ke5 $1 52. Rb4 Rh7
53. Rxa4 Rxh4 54. Kg2 Rh3 55. Rc4 f4 56. a4 f3+ 57. Kf2 Rh2+ 58. Kg1 g3 {
Bologan won the endgame.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 11"]
[Date "2000.09.27"]
[Round "9"]
[White "Short, Nigel"]
[Black "Flores, Diego"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2677"]
[BlackElo "2358"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "2000.09.??"]
[SourceDate "1999.07.01"]

{When the last round began, Polgar and Bologan led by half-a-point on Karpov.
The leaders played a quick draw. Karpov won a pawn against Ricardi but
overstepped the time limit. Short gained the third place.} 1. e4 e5 2. Nf3 Nc6
3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. a4 Na5 10. Bc2
b4 11. d4 Bg4 12. Nbd2 c5 $5 13. cxb4 Nc6 $5 ({The alternative is} 13... cxb4)
14. dxe5 dxe5 15. h3 ({Or} 15. bxc5 $5 Bxc5 16. h3) 15... Bxf3 $5 16. Nxf3 Qxd1
17. Rxd1 Nd4 $5 (17... Nxb4 18. Bb3 Nc6 {also favours White.}) 18. Nxd4 cxd4
19. f4 Bxb4 20. fxe5 Nd7 21. Bf4 Rfe8 22. Bb3 Nxe5 23. Rac1 Ng6 $2 ({Better is
} 23... Bd6 $1 24. Rxd4 $6 Nf3+ $1 25. gxf3 Bxf4 26. Re1 Rab8) 24. Bc7 $1 Rac8
25. Rxd4 a5 26. Bd5 Bd6 $2 (26... Re7 {avoids the next tactics.}) 27. Bxf7+ $1
Kxf7 28. Rf1+ Ke6 29. Bxd6 Red8 30. Bc5 Rxd4 31. Bxd4 Rc4 32. Bxg7 Rxa4 33. Bc3
Rxe4 34. Bxa5 {White has two extra pawns in the ending.} Ra4 35. Bd2 h5 36. Bg5
Ne5 37. Rf6+ Kd5 38. Rh6 Rb4 39. Rxh5 Ke6 40. Bd2 {The final standings became:
Polgar and Bologan 61/2/9, Short 6, Karpov 51/2, Ricardi 41/2, Milov and
Leitao 4, Pierrot 31/2, Milos 3, Flores 11/2. Judit won on tie-break.   The
prize money was $53,000. Judit got $10,000. Mirta and Liliana Najdorf attended
the closing ceremony.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.04"]
[Round "1"]
[White "Milos, Gilberto"]
[Black "Karpov, Anatoly"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2614"]
[BlackElo "2692"]
[Annotator "JvR"]
[PlyCount "118"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

{The twelfth Najdorf tournament was played from 4 until 13 ix 2001. Tournament
hall was the Museo de los Ninos. Karpov was the highest rated participant.} 1.
e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4
Nf6 9. Nc3 O-O 10. cxd5 Nxd5 11. Re1 Be6 12. a3 Bf6 13. Be4 Rb8 $5 ({Usual is} 
13... h6) 14. Qd3 h6 15. Bh7+ Kh8 16. Bf5 Nxc3 $6 ({Preferable is} 16... Bxf5
17. Qxf5 Nce7 $1) (16... Nxd4 $2 17. Nxd4 Bxd4 18. Qxd4 $1 Nxc3 19. Qxc3 Bxf5
20. Bxh6 $1 {favours White (Milos).}) 17. bxc3 Bd5 18. Bf4 {White has an edge.}
Ne7 19. Bg4 Ng6 20. Bg3 $1 b5 21. Qf5 a5 22. Re3 Rb7 23. Qh5 b4 $5 24. axb4
axb4 25. Rae1 $5 (25. cxb4 Rxb4 26. Bxc7 Qxc7 27. Qxd5 Rd8 28. Ra8 Rxa8 29.
Qxa8+ Kh7 {achieves an advantage.}) 25... c6 $5 26. cxb4 $6 (26. Bf5 $1 Bxf3
27. Qxf3 bxc3 28. Rxc3 Bxd4 29. Rxc6 {keeps the initiative.}) 26... Rxb4 27.
Ne5 $5 Rxd4 28. Nxg6+ $2 ({Right is} 28. Nd7 Rg8 29. Nxf6 Qxf6 30. Qf5 Qxf5 31.
Bxf5 Nf4 32. f3 {and White can survive.}) 28... fxg6 29. Qxg6 Bf7 30. Qf5 g6 $1
31. Qf3 Bd5 32. Qe2 Bc4 33. Qf3 Bd5 34. Qe2 Bc4 35. Qf3 Bg7 $1 {
Black gains a piece.} 36. Qxc6 Rxg4 37. Bd6 Qa8 38. Qxa8 Rxa8 39. Be5 Bd5 40.
Bxg7+ Kxg7 41. f3 Rd4 42. R1e2 h5 43. Kf2 Kf6 44. Rb2 Ra6 45. Re8 Be6 46. Rf8+
Kg5 47. Rb5+ Bf5 48. Rb2 Rad6 49. Ke3 Rc4 50. Rfb8 Rd3+ 51. Kf2 h4 52. Rh8 Rdc3
53. Rh7 Rc2+ 54. Rxc2 Rxc2+ 55. Kg1 h3 56. g4 Bd3 57. Rxh3 Kf4 58. Rh8 Kxf3 59.
Rh3+ Ke2 {Karpov had a fine start.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.05"]
[Round "2"]
[White "Radjabov, Teimour"]
[Black "Ricardi, Pablo"]
[Result "1-0"]
[ECO "D97"]
[WhiteElo "2558"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "97"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Na6 8.
Be2 c5 9. d5 e6 10. O-O exd5 11. exd5 Bf5 12. Be3 Rc8 13. Rad1 h6 14. Qb3 $5 ({
Known is} 14. d6) 14... Qb6 $6 ({Preferable is} 14... Nb4 $1 15. Bxc5 $1 Rxc5
16. Qxb4 b6 17. d6 a5 18. Qa4 Rxc3 $1 19. bxc3 Ne4 {
and Black has made positional sacrifices.}) 15. Qxb6 axb6 16. Nd2 Ng4 17. Bxg4
Bxg4 18. f3 Bd7 19. Nc4 Rce8 (19... b5 20. Nd6 $1 Ra8 21. Ncxb5 {costs a pawn.}
) 20. Rfe1 b5 21. Nb6 $1 Rxe3 $1 22. Rxe3 Bd4 23. Rxd4 $5 cxd4 24. Nxd7 dxe3
25. Nxf8 Kxf8 26. Nxb5 {White has an extra pawn in the knight ending.} Nb4 27.
Nc3 Nd3 28. Kf1 Ke7 29. b3 Kd6 $2 (29... f5 $1 30. Ke2 Nf4+ 31. Kxe3 Nxg2+ 32.
Kd4 Ne1 33. f4 Nf3+ 34. Kc5 g5 {fights for the last chance.}) 30. Ke2 $1 Nf4+
31. Kxe3 Nxg2+ 32. Kd4 $1 Nh4 33. Ne4+ $1 Ke7 {Black has lost time.} 34. Nd2
Kd6 35. Nc4+ Ke7 36. Nd2 Kd6 37. f4 f5 38. Nc4+ Ke7 39. a4 g5 40. a5 gxf4 41.
b4 Nf3+ 42. Kc5 Ng5 43. Kb6 f3 44. Kc7 f2 45. d6+ Ke6 46. Ne3 Nf7 47. d7 Ke5
48. b5 Kd4 49. Nf1 {The young star played well.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.06"]
[Round "3"]
[White "Short, Nigel"]
[Black "Polgar, Judit"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2664"]
[BlackElo "2686"]
[Annotator "JvR"]
[PlyCount "92"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 a6 5. g3 d5 6. d3 Nf6 7. Bg2 Be7 8. O-O O-O
9. Ne5 Nd4 10. exd5 $5 Nxd5 11. Nxd5 exd5 12. Be3 f6 13. Nf3 Nc6 14. d4 c4 15.
Nh4 Be6 16. f5 Bf7 17. c3 Re8 18. Qd2 b5 19. Bf3 b4 20. Bf4 a5 21. Rfe1 a4 22.
a3 bxa3 23. bxa3 Bf8 24. Rxe8 Qxe8 25. Ng2 Na5 26. Ra2 Qb5 27. Ne3 Re8 28. Kf2
Nb3 29. Qc2 Qa5 30. h4 Qd8 31. Qd1 Qa5 32. Qe1 Rd8 33. g4 Re8 34. g5 $1 Qd8 35.
Qg1 Kh8 36. Ng4 $2 (36. g6 $1 Bg8 37. gxh7 Bxh7 38. h5 {
continues the attack on the kingside.}) 36... Nc5 $1 {
Black counters in the central area.} 37. Kg2 $6 ({Preferable is} 37. Qg3) 37...
Nd3 38. Bg3 Bd6 $5 39. Bxd6 Qxd6 40. gxf6 Ne1+ 41. Kf2 Nxf3 $5 42. fxg7+ $1
Kxg7 43. Kxf3 Bh5 $1 44. Qh2 Qe7 $1 45. Qf4 Kf7 $1 46. Rg2 (46. f6 $5 Qd7 $1
47. Rg2 Rg8 48. Rg3 Rg6 {wins for Black.}) 46... Qe1 $1 {
Judit defeated Nigel again.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.09"]
[Round "6"]
[White "Polgar, Judit"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "C13"]
[WhiteElo "2686"]
[BlackElo "2617"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Nbd7 6. Nf3 Be7 7. Nxf6+ Bxf6
8. h4 O-O 9. Bd3 c5 10. c3 cxd4 11. cxd4 e5 12. Qc2 h6 13. Bh7+ $5 Kh8 14.
O-O-O Qa5 {Black avoids a big risk.} (14... hxg5 $5 15. hxg5 Bxg5+ 16. Nxg5
Qxg5+ 17. f4 Qxf4+ 18. Kb1 g6 {brings a great turmoil.}) 15. Kb1 exd4 16. Bd2
Qc5 17. Bf4 a5 $5 18. Rhe1 Ra6 19. Bd3 Qxc2+ 20. Bxc2 Nc5 21. Ne5 $2 (21. Nxd4
Bxh4 22. Nf3 Bxf2 23. Rf1 Ne6 24. Bxh6 gxh6 25. Rxf2 {keeps the equal chances.}
) 21... Kg8 $1 22. Bg3 $5 (22. Rxd4 Ne6 23. Rde4 Nxf4 24. Rxf4 Re8 {
leads to a black plus.}) 22... Rd8 23. Nd3 Rc6 24. Re2 Bf5 25. Nxc5 Rxc5 26.
Bxf5 Rxf5 {Kortschnoj has an extra pawn in the endgame.} 27. Kc2 Rc5+ 28. Kd3
a4 29. Rde1 Kh7 30. Re8 Rxe8 31. Rxe8 Rb5 32. Re2 Kg6 33. f3 Rc5 34. Bf2 Rc1
35. Re1 $5 (35. Rd2 Ra1 36. a3 h5 37. g3 Rc1 38. Bxd4 Bxd4 39. Kxd4 Rg1 {
loses a pawn in a rook ending.}) 35... Rxe1 36. Bxe1 Kf5 37. Bf2 Kf4 38. b3
axb3 39. axb3 h5 40. Ke2 Ke5 41. Kd3 Kd5 {Black wins the bishop ending quietly.
} 42. Be1 g6 43. Bf2 Be5 44. Be1 f5 45. Bf2 Kc5 46. Be1 Bh2 47. g3 Bg1 48. Ke2
Be3 49. Kd3 Kd5 50. Ke2 f4 $1 51. gxf4 Bxf4 52. Bf2 g5 $1 53. Kd3 gxh4 54. Bxh4
Be5 55. Bf2 Bf6 56. Bg3 h4 57. Bh2 Be5 {Kortschnoj played accurately.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.09"]
[Round "6"]
[White "Radjabov, Teimour"]
[Black "Mecking, Henrique"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2558"]
[BlackElo "2552"]
[Annotator "JvR"]
[PlyCount "153"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 Bg4 5. Qb3 Qb6 6. Qxb6 axb6 7. f3 $5 ({
Theory is} 7. cxd5 Nxd5 8. Nxd5 cxd5 9. Bd2) 7... Bf5 $6 (7... Bd7 {
does not lose a tempo.}) 8. g4 $1 Be6 9. g5 Nfd7 10. cxd5 Bxd5 11. Bd3 Na6 12.
Nxd5 cxd5 13. Bd2 {White can restrict his opponent by the two bishops.} e6 14.
Ne2 Nb4 $5 15. Bxb4 $1 {He plans an attack in the centre instead.} Bxb4+ 16.
Kf2 h6 17. g6 f5 18. Nf4 $1 Nf8 19. e4 $5 dxe4 20. fxe4 fxe4 $2 ({
Counter-play by} 20... Bd2 $1 21. Nh5 f4 $1 22. Nxg7+ Ke7 23. Nf5+ exf5 24. g7
Rg8 25. gxf8=Q+ Rgxf8 26. exf5 Rfd8 {
will regain the sacrificed pawn and achieve equality.}) 21. Bxe4 Rd8 (21... Bd2
$1 22. Ne2 Nd7 23. Bxb7 O-O+ $1 24. Kg2 Ra5 {gets compensation for the pawn.})
22. Ke3 Be7 23. h4 Bf6 24. Rad1 Ke7 $5 (24... Rd7 25. Nh5 Bd8 26. Rc1 {
leads to a positional disaster for Black.}) 25. Bxb7 Nd7 26. Bc6 Nb8 27. Be4
Na6 28. Nh5 Rhf8 29. Nxf6 Rxf6 30. Rhf1 Rxf1 31. Rxf1 Rd7 32. Rf7+ Kd6 33.
Rxd7+ Kxd7 34. a3 Kd6 35. b4 b5 36. Bc2 Nc7 37. Bb3 Ne8 38. a4 bxa4 39. Bxa4
Nc7 40. Bb3 $1 e5 41. Bc4 exd4+ 42. Kxd4 Na8 43. Bb3 Nb6 44. Bf7 Nd7 45. Bd5
Nb6 46. Be4 Nd7 47. Kc4 Nf6 48. Bf3 Nd7 49. Kb5 Ne5 50. Be4 Nd7 51. Bb1 Nf6 52.
Ba2 Nd7 53. Bf7 Ne5 54. Kb6 Nf3 55. h5 Nd4 56. Kb7 Kd7 57. Bd5 Kd6 58. Be4 Kd7
59. Bd3 Kd8 60. Kb6 Kd7 61. Bb5+ Kd6 62. Ba4 Ne6 63. Kb7 Nd4 64. Kc8 Ke7 65.
Kc7 Ne6+ 66. Kc6 Nd4+ 67. Kd5 Ne6 68. Ke5 Nc7 69. Bc6 Ne6 70. b5 Nd8 71. Bd5
Kd7 72. b6 Ke7 73. Be4 Kd7 74. Bg2 Ke7 75. Bh3 Nb7 76. Kd5 Nd8 77. Bc8 $1 {
The youngster handled the ending calmly.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.11"]
[Round "7"]
[White "Karpov, Anatoly"]
[Black "Polgar, Judit"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2692"]
[BlackElo "2686"]
[Annotator "JvR"]
[PlyCount "149"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qa4 Bb7 6. Bg2 c5 7. dxc5 bxc5 8. O-O
Be7 9. Nc3 O-O 10. Bf4 Qb6 11. Rfd1 Rd8 12. Qb3 d6 13. Rd2 Na6 $5 ({
The alternative is} 13... Qxb3 14. axb3 Nc6) 14. Qxb6 $1 axb6 15. Rad1 Ne8 16.
h4 h6 17. Nh2 Bxg2 18. Kxg2 Nac7 $2 ({More active is} 18... Nb4 $1 19. a3 Nc6
20. Nb5 Na5) 19. e4 $1 Kf8 20. b3 Rdb8 21. e5 $1 d5 22. cxd5 exd5 23. Nxd5 Nxd5
24. Rxd5 Rxa2 25. Rd7 $1 {White controls the central area.} Raa8 26. Ng4 Rd8
27. Ne3 Rac8 28. Nf5 Rxd7 29. Rxd7 Bd8 30. Rb7 Bc7 31. h5 {
The restraint becomes unpleasant for Black.} Rd8 32. Ne3 Rd3 33. e6 $1 fxe6 ({
The pointe is} 33... Bxf4 $2 34. Rxf7+ Kg8 35. gxf4) 34. Bxc7 Rd7 35. Rxb6 Rxc7
36. Rxe6 Rb7 37. Re5 Rxb3 38. Rxc5 {White has gained a pawn.} Nf6 39. g4 Ra3
40. Rc8+ Kf7 41. Nc4 Ra7 42. f3 Ke6 43. Rc5 Nd5 44. Rc6+ Ke7 45. Ne5 Nf4+ 46.
Kg3 Ra4 47. Rc2 Kf6 48. Nd7+ Ke7 49. Nc5 Rd4 50. Ra2 Kf7 51. Ra7+ Kf8 52. Ne4
Ne6 53. Ra6 Ke7 54. Kf2 Rc4 55. Ke3 Rc1 56. Ra7+ Rc7 57. Ra4 Rb7 58. Ra3 Rc7
59. Ng3 Kf6 60. Ne4+ Ke7 61. Nc3 Rd7 62. f4 {The progress goes slowly.} Nc5 63.
Ne2 Kf7 64. Nd4 Ne6 65. Nf3 Rb7 66. Ne5+ Kf6 67. Nd3 Ke7 68. Ke4 Rd7 $2 {
Polgar leaves an opening in her fortress.} (68... Rb5 {stops White (Karpov).})
69. Kf5 $1 Rd6 70. Ra7+ Kf8 ({Or} 70... Rd7 71. Rxd7+ Kxd7 72. Kg6 Ke7 73. f5)
71. Ne5 Nd4+ 72. Ke4 Ne6 73. Ng6+ Kg8 74. Ke5 Rb6 75. Re7 {
Karpov and Radjabov led.} 1-0

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.12"]
[Round "8"]
[White "Ricardi, Pablo"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "2545"]
[BlackElo "2617"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4
Kf8 9. Qd1 c5 10. Bd3 Nxd2 11. Qxd2 Nc6 12. Nf3 c4 13. Be2 Qe7 $5 14. a4 b6 15.
g3 Ke8 $5 {The king goes to the queenside.} 16. Nh4 Kd8 17. f4 g6 18. Ng2 h5
19. h3 Kc7 20. Bf3 Bb7 21. Kf2 Rh7 22. g4 $5 (22. h4 $1 {secures the position.}
) 22... hxg4 23. hxg4 Rah8 24. Rxh7 Rxh7 25. f5 $5 (25. g5 $1 {closes the game.
}) 25... gxf5 26. gxf5 exf5 $5 27. Qf4 Qe6 28. Qg3 $1 Qg6 $6 ({Better is} 28...
Ne7 29. Nf4 Qc6) 29. Bxd5 $1 Qxg3+ 30. Kxg3 Rg7+ 31. Kf2 $2 (31. Kf4 $1 Nxe5
32. Bxb7 Kxb7 33. Ne3 {gains a plus.}) 31... Nxe5 $1 32. Bxb7 Ng4+ 33. Kf3 Kxb7
{The endgame favours Black.} 34. Kf4 Kc6 35. Rb1 a6 36. d5+ $4 (36. Re1 $1 Nf6
37. Ne3 Nd5+ 38. Nxd5 Kxd5 39. Kf3 {almost equalises.}) 36... Kc5 $1 37. d6 Rg6
$1 38. Nh4 Rxd6 39. Nxf5 Rg6 40. Re1 Nf6 41. Ne7 Nh5+ 42. Kf5 Ng7+ 43. Kf4 Re6
44. Rg1 Rxe7 45. Rxg7 Re2 $1 46. Rg8 Rxc2 47. Rc8+ Kd5 48. Rd8+ Ke6 49. Rb8
Rxc3 50. Rxb6+ Kd5 51. Rxa6 Ra3 52. a5 Kd4 53. Ra7 c3 {
Kortschnoj joined the lead with Karpov and Radjabov.} 0-1

[Event "Buenos Aires"]
[Site "Najdorf 12"]
[Date "2001.09.13"]
[Round "9"]
[White "Karpov, Anatoly"]
[Black "Ricardi, Pablo"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2692"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "2001.09.??"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 c6 7. Bd3 Bd6 8.
Nf3 Nf8 9. Ne5 Ng6 10. f4 Qb6 $5 ({Theory is} 10... O-O 11. O-O h6 {
(Euwe - Rodgaard, Denmark 1980).}) 11. Qc2 O-O 12. Bxf6 $5 {
Karpov prefers to weaken his opponent.} (12. O-O {also brings an advantage.})
12... gxf6 13. Nf3 Re8 14. Kf2 Bg4 15. Rhe1 Rac8 16. g3 Kg7 17. Rac1 Qd8 $6 {
Black spoils time.} 18. Bf5 Bxf3 19. Kxf3 Rc7 20. a3 Rce7 21. Rcd1 Bc7 22. Re2
Qd6 23. Kf2 a6 24. Bg4 Bb6 25. Qf5 Ba7 26. Kf3 b5 27. Qd3 a5 28. Kf2 b4 $5 29.
axb4 axb4 30. Na4 Re4 $6 31. Bf3 R4e7 32. Rc1 Qd7 $5 33. Nc5 $1 Qh3 $5 34. Bg2
$1 Qh5 $2 {He should protect the queenside.} ({Correct is} 34... Qc8) 35. h3 $5
Nf8 $5 36. Nb3 $5 Re6 $5 37. f5 $5 Rd6 $5 38. Bf3 $5 {
White wins despite a number of doubtful moves.} Qh6 39. Na5 Bb8 40. h4 Rc8 41.
Qa6 Rc7 42. Rxc6 Ra7 43. Qb6 Nd7 44. Qxb4 {Kortschnoj had an advantage against
Milos but could not win. The final standings became: Karpov 61/2/9, Kortschnoj
and Radjabov 6, Short 5, Xie Jun and Polgar 41/2, Felgaer 4, Mecking and
Ricardi 31/2, Milos 11/2.   Najdorf Memorial 12 became the last closed
international event. The rise and fall of Argentine chess coincided with the
later life of Najdorf.} 1-0

