[Event "IBM Amsterdam"]
[Site "1"]
[Date "1961.??.??"]
[Round "3"]
[White "Van den Berg, Carel"]
[Black "Langeweg, Kick"]
[Result "0-1"]
[ECO "B96"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1961.??.??"]

{AMSTERDAM 1961  The chess club VAS helped as organiser of the first IBM
tournament. Lots were drawn on an IBM computer at the Johan Huizingalaan in
Amsterdam. The twelve participants played from 25 v until 6 vi 1961. Langeweg
started like a tornado.   } 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. exf6 Qe5+ 11. Be2 Qxg5 12. O-O
Ra7 13. Qd3 Rd7 14. Ne4 Qe5 15. Nf3 ({The solid} 15. c3 $1 {
stems from Bagirov - Polugaevsky, Leningrad 1960.}) 15... Qxb2 $5 (15... Qc7 {
was played by the originator of this variation (Novopashin - Polugaevsky,
Vilnius 1960).}) 16. Qe3 Bb7 17. Rad1 Bxe4 18. fxg7 Qxg7 19. Qxe4 Bd6 20. Bd3
Rg8 {Black has won a pawn and counters.} 21. Rd2 h5 22. a4 b4 (22... Qg4 $1 23.
Qa8 Ke7 {loses no time.}) 23. Re1 Qg4 24. Qa8 Ke7 25. Re4 $5 Qg7 26. Rde2 $5
Qa1+ 27. Re1 Qxa4 28. Rxe6+ $4 {The <->theorist' Van den Berg breaks down.} (
28. Nd4 $5 {(threatens Nxe6)} 28... Kd8 $1 29. Rb1 Kc7 30. Qa7+ {
continues to fight.}) 28... fxe6 29. Qe4 Kd8 30. Qxe6 Rgg7 31. Bf5 Qc6 32. Kh1
Rde7 33. Qf6 Nd7 34. Qh4 Kc7 35. Be4 Qc5 {Langeweg started with eight wins!}
0-1

[Event "IBM Amsterdam"]
[Site "1"]
[Date "1961.??.??"]
[Round "4"]
[White "Donner, Jan Hein"]
[Black "Johner, Hans"]
[Result "1-0"]
[ECO "A56"]
[Annotator "JvR"]
[PlyCount "59"]
[EventDate "1961.??.??"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Be3 $5 Bd7 $5 {
This move has a prophylactic value.} 8. Qd2 Na6 $6 ({Better is} 8... a6 {
()and .. b5.}) 9. f4 exf4 10. Bxf4 Ne8 $2 ({Preferable is} 10... Ng4) 11. Nf3
Bf6 12. O-O Qe7 $5 13. Rae1 Rd8 14. Bd3 Be5 $5 {Black prevents e5.} 15. Nxe5
dxe5 16. Be3 Nd6 17. Nb5 $1 {The attack shifts to the queenside.} 17... Nxb5 $6
(17... b6 $1 18. Nxa7 Nb4 19. a3 Nxd3 20. Qxd3 Ra8 {starts a counteraction.})
18. cxb5 Nc7 19. Rc1 b6 20. b4 $1 c4 $5 21. Bxc4 Qd6 ({Or} 21... Nxb5 22. Bg5
$1) 22. a4 f5 $5 23. exf5 Bxf5 24. Bb3 Kh8 25. Rc6 Qd7 26. Bg5 Rc8 27. d6 Ne6
28. Rxf5 $1 Rxf5 29. Rxc8+ Qxc8 30. Bxe6 {The old Bernstein and Johner were
invited as cannon fodder for the Dutch players.} 1-0

[Event "IBM Amsterdam"]
[Site "1"]
[Date "1961.??.??"]
[Round "11"]
[White "Wade, Robert"]
[Black "Langeweg, Kick"]
[Result "0-1"]
[ECO "A53"]
[Annotator "JvR"]
[PlyCount "118"]
[EventDate "1961.??.??"]

{Langeweg lost in round nine and ten. He and Donner shared the lead at the
start of the last round.} 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Be3 Be7 6.
h3 O-O 7. Nf3 c6 8. d5 cxd5 9. cxd5 Ne8 10. g4 a6 11. a4 a5 12. Bb5 Nc7 13. Rc1
Na6 $5 (13... Nxb5 14. Nxb5 b6 {equlises.}) 14. Nd2 Bg5 15. Nc4 Bxe3 16. Nxe3
Ndc5 17. Bxa6 $6 bxa6 18. O-O Rb8 19. Rc2 $6 ({More solid is} 19. Nc4 Rb4 20.
Qe2) 19... Rb4 20. f3 Bd7 21. Rg2 Qb6 22. Kh1 Rb8 23. Nf5 Bxf5 24. gxf5 Rxb2
25. Rfg1 Rxg2 26. Rxg2 Qd8 27. Qd2 Qh4 28. Kh2 Rb3 29. Rg4 Qd8 30. Rg2 Kf8 31.
Rg1 h6 32. Rb1 $2 {Wade gives away a pawn.} 32... Rxb1 33. Nxb1 Nxa4 34. f6
Qxf6 35. Qxa5 Nc5 36. Na3 Qf4+ 37. Kg2 Qg5+ 38. Kh2 Qf4+ 39. Kg2 Qg5+ 40. Kh2
g6 41. Nc4 Nxe4 42. fxe4 Qf4+ 43. Kg1 Qc1+ 44. Kh2 Qxc4 45. Qd8+ Kg7 46. Qxd6
Qe2+ 47. Kg1 Qe3+ 48. Kh2 Qf4+ 49. Kg1 Qg3+ 50. Kf1 Qxh3+ 51. Ke2 Qg2+ 52. Ke3
Qg3+ 53. Kd2 Qf2+ 54. Kc3 Qd4+ 55. Kb3 Qxe4 56. Qd8 Qd3+ 57. Kb2 e4 58. d6 e3
59. Qe7 e2 {
Donner drew. Therefore, Langeweg won by 9/11, half-a-point before Donner.} 0-1

[Event "IBM Amsterdam"]
[Site "2"]
[Date "1962.??.??"]
[Round "3"]
[White "Henneberke, Franciscus"]
[Black "Czerniak, Moshe"]
[Result "0-1"]
[ECO "A65"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1962.??.??"]

{AMSTERDAM 1962  Another group of twelve chess players started in the second
IBM tournament from 14 until 30 viii 1962. Again it was a mix of top Dutch
players and experienced foreign masters.   An enterprising player was Czerniak.
I have selected four of his games.   } 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5
5. cxd5 d6 6. e4 g6 7. Bd3 Bg7 8. Nge2 O-O 9. O-O Na6 10. Ng3 Nc7 11. h3 $5 Rb8
12. a4 b6 $5 13. Be3 a6 {They play along the usual lines of the Benoni.} 14.
Qd2 Re8 15. Bg5 $5 b5 16. Qf4 $1 c4 17. Bc2 b4 18. Nd1 $5 (18. Nce2 $1 {
(Shipov) keeps square d1 open.}) 18... b3 $1 19. Bb1 Qe7 20. Ne3 $2 (20. Qc1 $1
a5 21. Bd2 $1 Ba6 22. Bc3 {stops the counteraction.}) 20... Rb4 $1 21. Rc1 c3
$1 22. Rxc3 h6 $1 23. Bxf6 ({Not} 23. Bxh6 $2 Ncxd5 $1 24. Nxd5 Nxd5 {(Euwe).})
23... Qxf6 24. Qxf6 Bxf6 25. Rc4 Rb7 26. Nd1 Nxd5 27. exd5 Re1+ 28. Kh2 Rxd1
29. Rxc8+ Kg7 {White is not lost yet.} 30. Bxg6 $2 (30. f4 $1 Bd4 $1 (30...
Bxb2 $2 31. Bxg6 Bxa1 32. Be4) 31. h4 $1 f5 32. h5 Bxb2 33. hxg6 Bxa1 34. Bxf5
h5 35. Be4 Re1 36. Bd3 Rd1 37. Be4 $11) 30... Rxa1 31. Bd3 Be5 $1 {
Black has to pin the knight.} 32. Rc4 Bxg3+ 33. Kxg3 Ra2 34. Rg4+ Kf6 35. Bxa6
Rb8 36. Bb5 Rxb2 37. Rb4 Rg8+ 38. Kf3 Ke5 39. Bc6 Rg6 40. Re4+ Kf6 41. g3 Kg7
42. Ke3 Rb1 43. Rb4 Rf6 44. f4 $2 (44. a5 $1 b2 45. Ke2 Ra1 46. Rxb2 Rxa5 {
offers more resistance.}) 44... b2 $1 45. Kd2 Rg1 46. Rxb2 Rxg3 47. Rb4 Rxh3
48. a5 Rg6 0-1

[Event "IBM Amsterdam"]
[Site "2"]
[Date "1962.??.??"]
[Round "6"]
[White "Donner, Jan Hein"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "D36"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1962.??.??"]

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. Nf3 Re8 10. O-O Nf8 11. Rab1 Ne4 12. Bxe7 Qxe7 13. b4 Bf5 $2 14. b5 $1
Qd6 $5 ({Slightly better is} 14... Nxc3 15. Qxc3 Bxd3 16. Qxd3 c5 {
(Brunner - Ekstroem, Switzerland 1994).}) 15. bxc6 bxc6 ({Or} 15... Qxc6 16.
Nxe4 $1 dxe4 17. Qxc6 bxc6 18. Bc2 $1) 16. Ne5 Nxc3 17. Qxc3 Bxd3 18. Nxd3 Re6
19. Qb4 Qd8 $5 20. Rfc1 Rh6 $5 {Black begins a desperate action.} 21. Qb7 $1
Rc8 22. Qxa7 Ra8 23. Qb7 Rxa2 24. Rxc6 Rxc6 25. Qxc6 Qa5 26. h4 Qd2 27. Qxd5 g6
28. Rb7 Ra1+ 29. Kh2 Qa2 30. Qxa2 Rxa2 31. Kg3 f6 32. Nc5 h5 33. d5 f5 34. d6
Ra8 35. Re7 Nh7 36. Ne6 Nf6 37. d7 {Czerniak had an off-day.} 1-0

[Event "IBM Amsterdam"]
[Site "2"]
[Date "1962.??.??"]
[Round "8"]
[White "Tan Hong Ghee"]
[Black "Czerniak, Moshe"]
[Result "1-0"]
[ECO "E65"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1962.??.??"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Na6 7. Nc3 d6 8. e4
Bg4 9. d5 $5 Qd7 10. Qd3 $5 e5 $6 (10... Nb4 $5 {makes the natural move.}) 11.
a3 Ne8 12. Rb1 f5 13. Ng5 $1 f4 $5 ({Preferable is} 13... fxe4 14. Ncxe4 Nf6)
14. f3 h6 15. fxg4 hxg5 16. h3 $1 Bf6 17. Bf3 Bd8 18. Bd1 Nf6 19. Kg2 Qh7 20.
Bd2 Ne8 $5 {Black has no plan.} 21. Ba4 Nac7 22. h4 $5 Nf6 {
Black has a fortress.} ({The pointe is} 22... gxh4 23. gxf4 $1 exf4 24. Bxf4 {
(Shipov).}) 23. Bd1 gxh4 $2 (23... Nd7 $1 {keeps the position closed.}) 24.
gxf4 $1 exf4 25. Bxf4 Be7 26. e5 $1 Nfe8 27. Bc2 dxe5 28. Bxe5 Rxf1 29. Rxf1
Rd8 30. Ne4 $5 Qh6 31. Qf3 Qf8 32. Qe3 h3+ 33. Qxh3 1-0

[Event "IBM Amsterdam"]
[Site "2"]
[Date "1962.??.??"]
[Round "11"]
[White "Czerniak, Moshe"]
[Black "Rellstab, Ludwig Sr"]
[Result "1-0"]
[ECO "B08"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1962.??.??"]

{Though both masters were in their fifties, they played a lively game. 
} 1.
e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 c6 5. h3 Bg7 6. Be3 a6 $6 {
Black chooses a provocative strategy by advancing on the queenside.} 7. Qd2 b5
8. Bd3 Bb7 9. O-O O-O 10. Bh6 c5 11. Bxg7 Kxg7 12. e5 {
Czerniak wants to conquer the centre before he attacks the king.} 12... dxe5
13. dxe5 Nd5 14. Ne4 Qb6 15. Qg5 $6 f6 16. Qh4 $2 {
The manoeuvre by the white queen has been premature.} 16... Nb4 $2 (16... c4 $1
17. Be2 g5 $1 18. exf6+ exf6 19. Nfxg5 fxg5 20. Nxg5 h6 {
brings a colourful action and counteraction}) 17. Rad1 Ra7 18. exf6+ exf6 19.
Rfe1 Nxd3 $4 (19... Bd5 $1 20. a3 Nxd3 21. Rxd3 Rd7 {mobilises the defence.})
20. Neg5 $1 {Czerniak hits by a smashing combination.} 20... fxg5 21. Re7+ Rf7
22. Rxf7+ Kxf7 23. Qxh7+ Ke8 24. Qg8+ Ke7 25. Nxg5 Qf6 26. Rxd3 Nd7 27. Qh7+ {
Czerniak and Tan shared the victory by a score of 8/11. Donner trailed at one
point.} 1-0

[Event "IBM Amsterdam"]
[Site "3"]
[Date "1963.??.??"]
[Round "3"]
[White "Donner, Jan Hein"]
[Black "Milic, Borislav"]
[Result "1-0"]
[ECO "E83"]
[Annotator "JvR"]
[PlyCount "111"]
[EventDate "1963.??.??"]

{AMSTERDAM 1963  The event reached its final shape in 1963. 120 instead of 12
players participated in groups of ten. The pyramid of categories consisted of
one grandmaster, one master, two reserve master and lesser groups.   } 1. d4
Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Nge2 a6 8. Nc1 e5 9.
d5 Nd4 10. Nb3 Nxb3 11. axb3 Nh5 12. Bd3 $5 ({Known is} 12. Qd2) 12... Nf4 13.
O-O f5 14. exf5 Nxd3 15. Qxd3 Bxf5 16. Qd2 Qe7 17. g4 $5 Bd7 18. Ne4 $1 Rf7 19.
Kg2 Qf8 20. h3 h6 21. Rf2 Kh7 22. Rh1 Qe7 23. h4 Rh8 $6 {
The rook will be imprisoned.} 24. h5 $1 g5 25. Qc2 $1 Kg8 26. Rc1 Bf8 $6 ({
Preferable is} 26... Be8 $1) 27. c5 $1 Rhh7 28. cxd6 cxd6 29. Qc7 $6 (29. Bd2
$1 {threatens Bb4.}) 29... Bb5 $1 30. Qxe7 Bxe7 31. Rc3 Rf8 $2 (31... Bf8 $1 {
prepares .. Rd7.}) 32. Bb6 $1 Rhf7 33. Bc7 $1 Rf4 34. Bxd6 Bxd6 35. Nxd6 Bd7
36. Rd2 e4 $5 37. Nxe4 Bxg4 38. d6 $5 Bd7 ({The point is} 38... Rxf3 39. d7 $1
Rxc3 40. d8=Q) 39. Nc5 R8f7 40. Nxd7 $2 Rxd7 {
Black gets new drawing opportunities.} 41. Rc7 Rff7 42. Rxd7 Rxd7 43. Kg3 Kf7
44. f4 gxf4+ 45. Kxf4 Ke6 46. b4 ({The smart} 46. Re2+ $5 Kf6 $5 47. Rg2 $5
Rxd6 $1 48. Rg6+ Ke7 49. Rxd6 Kxd6 50. Kf5 a5 {leads to a drawn pawn ending!})
46... Rf7+ 47. Ke4 Kd7 48. Ke5 Rf1 49. Rg2 Re1+ 50. Kd5 Rd1+ 51. Kc5 Rc1+ 52.
Kb6 Rc4 53. Rg7+ $2 ({Better is} 53. Kxb7 Rxb4+ 54. Kxa6 {
, but the endless line} 54... Kc6 $1 55. Ka5 Rb5+ 56. Ka4 Rxh5 57. Rd2 $1 Kd7
58. b4 Rh1 59. b5 h5 60. b6 h4 61. Kb5 h3 62. b7 Rb1+ 63. Ka6 Kc6 64. Rc2+ Kxd6
65. Ka7 Ra1+ 66. Kb8 Kd7 67. Rd2+ Ke7 68. Rh2 Ra3 69. Kc7 Rc3+ 70. Kb6 Rb3+ 71.
Kc6 Ke6 $1 {brings a draw.}) 53... Kxd6 54. Rxb7 Rc2 $4 {
Black misses the nice escape.} (54... Rxb4+ $1 55. Kxa6 Kc5 $1 56. Rxb4 Kxb4 {
draws!}) 55. Kxa6 Rxb2 56. Kb5 1-0

[Event "IBM Amsterdam"]
[Site "3"]
[Date "1963.??.??"]
[Round "4"]
[White "Czerniak, Moshe"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "C47"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1963.??.??"]

{The star of the grandmaster group was Lajos Portisch. He had just won the
zonal tournament Halle 1963.} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4
Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 Qe7+ 9. Qe2 cxd5 10. Qxe7+ Kxe7 11. O-O Rd8
12. a3 $5 ({Known is} 12. Nb5 {(Hort - Spassky, Varna 1962).}) 12... Bc5 $5 {
Young Lajos prefers a wild Scotch.} 13. b4 Bd4 14. Bd2 Bb7 15. Rae1+ Kf8 16.
Nb5 Bb6 17. Bf4 Ne8 18. Bxh7 $6 ({The solid} 18. Nc3 $1 {(Euwe) gains a plus.})
18... d4 $1 ({Chekhov gives} 18... g6 $5 19. Bh6+ Ng7) 19. a4 $5 a5 $1 20. Bg5
$5 Nf6 $1 21. Bxf6 gxf6 22. bxa5 $5 Rxa5 23. Be4 $2 (23. Ra1 Rda8 {(Euwe)} 24.
Rfb1 Rxa4 25. Rxa4 Rxa4 26. Bd3 {defends properly.}) 23... Bxe4 24. Rxe4 c6 $1
25. Na3 Rxa4 26. Nb1 Ra2 $1 27. Rc1 Ba5 28. Kf1 c5 29. Re2 $2 (29. Rh4 $1 {
prolongs the game.}) 29... Ra1 $1 30. Ree1 $5 Bxe1 31. Rxe1 Ra2 32. c3 Rb8 33.
cxd4 cxd4 34. Rd1 Rbb2 0-1

[Event "IBM Amsterdam"]
[Site "3"]
[Date "1963.??.??"]
[Round "6"]
[White "Barendregt, Johan"]
[Black "Portisch, Lajos"]
[Result "1-0"]
[ECO "C68"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1963.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 ({Portisch will play} 
5... f6 {against Fischer in Havana 1966 and lose again.}) 6. h3 h5 7. d3 Qf6 8.
Nbd2 $1 ({Theory is} 8. Be3 {(Albin - Von Scheve, Dresden 1892).}) 8... g5 $5
9. Re1 $5 ({The alternative has become} 9. Nc4 Bxf3 10. Qxf3 Qxf3 11. gxf3 f6 {
(Husenov - Bronstein, Soviet Union 1967).}) 9... Be6 10. d4 exd4 (10... g4 $1
11. Nxe5 O-O-O {raids (Sherzer - Brown, Philadelphia 1988).}) 11. e5 Qg7 $1 12.
Nxd4 O-O-O 13. Nxe6 fxe6 14. Qf3 Bb4 $5 (14... g4 $1 {makes the thematic move.}
) 15. c3 Be7 16. Nb3 Nh6 17. Nd4 Rxd4 $6 {Portisch sacrifices an exchange!} (
17... g4 $5 18. Qe4 Qg8 19. Nxc6 $1 bxc6 20. Qxc6 gxh3 21. Qxa6+ Kb8 22. Qb5+ {
leads to perpetual check.}) 18. cxd4 Nf5 19. Qb3 $6 Qg6 20. Be3 $6 g4 21. Kf1
gxh3 22. gxh3 Nh4 $2 (22... Rf8 $1 23. Ke2 Nxe3 24. Qxe3 Qc2+ 25. Kf1 Qxb2 {
utilises the white panic.}) 23. Ke2 $1 Qf5 24. Rg1 $1 Rd8 25. Rg3 Qf7 26. Rag1
Nf5 $5 27. Rg6 $1 Rd5 {White has grabbed the initiative. Black guards pawn e6.}
28. Rg8+ Bd8 29. Qb4 $1 Qd7 30. Bg5 $1 Nxd4+ 31. Kf1 Qh7 $1 32. Qf8 $1 Qd3+ 33.
Kg2 Qe4+ 34. f3 $1 Qe2+ 35. Kh1 Qxf3+ 36. Qxf3 Nxf3 37. Bxd8 Rxd8 38. Rxd8+
Kxd8 39. Rf1 Nxe5 40. Re1 Nc4 41. b3 {This clash was considered as the
<->wildest' game. Johan got the <->Oskam-prize' for it.   Barendregt was a
professor of empirical psychology. He researched psychoanalysis and found no
effect. It became a quarrel. De Groot, another chess player, supported his
pupil.} ({Lajos resigned because} 41. b3 Nb6 42. Rxe6 Nd5 43. Rh6 $1 {
is lost for Black.}) 1-0

[Event "IBM Amsterdam"]
[Site "3"]
[Date "1963.??.??"]
[Round "8"]
[White "Langeweg, Kick"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "E12"]
[Annotator "JvR"]
[PlyCount "46"]
[EventDate "1963.??.??"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 h6 6. Bh4 g5 7. Bg3 Nh5 8. Be5
$6 {Langeweg tries a doubtful novelty.} 8... f6 9. Qc2 fxe5 $1 10. Qg6+ Ke7 11.
Qxh5 {Portisch plays another colourful line.} 11... exd4 12. Nxd4 (12. Nb5 $5 {
attacks (Dickenson - Pigott, England 1998).}) 12... Bg7 13. e3 Nc6 14. O-O-O
Nxd4 15. exd4 Qf8 $1 16. Rd2 Qf4 17. Qd1 Raf8 18. f3 h5 $1 19. Be2 g4 20. Kb1
gxf3 21. Bxf3 Bxf3 22. gxf3 Qxf3 23. Re2 $2 Bxd4 {Langeweg had lost two pawns.
  Portisch won the tournament by 6/9, half- a-point before Czerniak and Donner.
} 0-1

[Event "IBM Amsterdam"]
[Site "4"]
[Date "1964.??.??"]
[Round "1"]
[White "Lehmann, Heinz"]
[Black "Barcza, Gedeon"]
[Result "1-0"]
[ECO "E54"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1964.??.??"]

{AMSTERDAM 1964  They played from 21 until 31 July 1964.  Lehmann could take
part, because he had won the previous master group.} 1. e4 c6 2. d4 d5 3. exd5
cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Bd3 dxc4 8. Bxc4 O-O 9. O-O b6 10. Bg5
Bb7 11. Ne5 $5 Nc6 $2 (11... Nbd7 {
answers solidly to the novelty (Donner - Portisch, Hamburg 1965).}) 12. Bxf6 $1
gxf6 ({Black will become successful with the speculative} 12... Qxf6 13. Nd7
Qh4 {(Farago - Rigo, Budapest 1976).}) 13. Nxc6 Bxc6 14. d5 $1 Bxc3 15. dxc6
Bxb2 ({Not} 15... Qxd1 16. Raxd1 Bxb2 17. Ba6 $1) 16. Qg4+ Kh8 17. Rad1 Qc7 $6
({Or} 17... Qb8 18. Rd7) 18. Bxe6 $1 {Black has been crushed quickly.} 18...
Rg8 19. Qh3 Rg7 20. Rd7 $1 Qf4 ({The simple point is} 20... Qxc6 21. Bd5) 21.
Rxf7 Rxf7 22. Bxf7 Qc7 23. Bg6 Be5 24. Rd1 Rg8 25. Rd7 $1 1-0

[Event "IBM Amsterdam"]
[Site "4"]
[Date "1964.??.??"]
[Round "5"]
[White "Dueckstein, Andreas"]
[Black "Donner, Jan Hein"]
[Result "0-1"]
[ECO "B42"]
[Annotator "JvR"]
[PlyCount "136"]
[EventDate "1964.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. O-O Nc6 8.
N1d2 $5 Nge7 $5 ({More solid seems to me} 8... Nf6 {
(Larsen - Ivkov, Amsterdam 1964).}) 9. Qh5 Ng6 10. Kh1 $6 {
White will get little time to play f4.} 10... d5 $5 11. Nf3 Nb4 12. Bg5 f6 $1
13. Bd2 Nxd3 14. cxd3 O-O 15. Rac1 e5 16. Nh4 Nxh4 17. Qxh4 Be6 18. Qg3 Qd7 19.
f4 dxe4 20. dxe4 exf4 21. Bxf4 Rac8 22. h3 $2 {Black gets the time to attack.}
22... Qa4 $1 23. Bh6 Qd7 24. Rfd1 Qf7 25. Bf4 Rfe8 26. e5 f5 $2 (26... Rxc1 27.
Rxc1 Bd5 $1 {assaults.}) 27. Rxc8 Rxc8 28. Be3 Bxb3 29. axb3 Bxe3 30. Qxe3 Re8
31. Re1 Qe6 32. Qf3 b6 33. Qd3 a5 34. Qb5 h6 35. Kh2 Rd8 36. Qc4 $6 {
White should not exchange the queens.} ({Better is} 36. b4 $1 Rd5 37. Qc4)
36... Qxc4 $1 37. bxc4 Rc8 38. b3 Rc5 39. g4 $6 (39. e6 $1 Kf8 40. e7+ Ke8 41.
Re6 $1 b5 42. cxb5 Rxb5 43. Rg6 $1 {draws.}) 39... fxg4 40. hxg4 Kf7 $1 41. e6+
Ke7 42. Kg3 b5 43. cxb5 Rxb5 44. Re3 Rb6 $1 {White is going to lose a pawn.}
45. Kf4 Rxe6 46. Rc3 Rf6+ 47. Ke5 Rg6 48. Rc7+ Kd8 49. Rc4 Rg5+ $1 {
Black is going to prevent a pawn exchange on the queenside.} 50. Ke6 Rb5 51.
Kf7 $2 ({The crirical line is} 51. Rc3 $1 g6 52. Kf6 $1 {and White survives.})
51... Rxb3 52. Kxg7 Rb6 53. Kf7 Ra6 54. Ra4 Kd7 55. Ra1 a4 56. Kg7 a3 57. Rd1+
Kc7 58. Rc1+ Kb7 59. Rb1+ Ka7 $1 {Jan Hein wins elegantly.} 60. Ra1 a2 61. Rxa2
Rxa2 62. Kxh6 Rh2+ 63. Kg6 Kb7 64. g5 Kc7 65. Kf7 Kd7 66. g6 Rf2+ 67. Kg8 Ke7
68. g7 Rg2 {Donner began a series of five wins.} 0-1

[Event "IBM Amsterdam"]
[Site "4"]
[Date "1964.??.??"]
[Round "8"]
[White "Larsen, Bent"]
[Black "Enevoldsen, Jens"]
[Result "1-0"]
[ECO "A24"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1964.??.??"]

1. g3 Nf6 2. Bg2 e5 3. Nf3 d6 4. c4 g6 5. Nc3 Bg7 6. d4 exd4 7. Nxd4 O-O 8. O-O
Nbd7 9. b3 c6 10. Bb2 Nc5 11. Qc2 a5 12. Rad1 Qb6 13. Rd2 a4 14. Nxa4 Nxa4 15.
bxa4 Qb4 16. Rfd1 Qxa4 17. Nb3 Ne8 18. Bxg7 Kxg7 19. c5 d5 20. Rd4 Qa3 21. Qc3
Kg8 22. R1d2 Nc7 23. Rh4 Re8 24. e3 Ra4 25. Rxa4 Qxa4 26. h4 Qg4 27. Nd4 Re7
28. a4 Ne8 29. a5 Nc7 30. Rb2 Qd1+ 31. Kh2 Qa1 32. Rc2 Qxc3 33. Rxc3 Na6 34.
Bf1 Nb8 35. Rb3 Rc7 36. Rb6 Nd7 37. a6 bxa6 38. Rxc6 Rxc6 39. Nxc6 Bb7 40. Ne7+
Kf8 41. c6 Kxe7 42. cxb7 Nb8 43. g4 Kd6 44. Kg3 {
Enevoldsen has defended well against the attack by Larsen.} 44... Kc5 $2 ({
Crucial is} 44... Kc6 $1 45. Kf4 $5 Kxb7 46. Kg5 $5 Nd7 $1 47. Kh6 Ne5 $1 48.
g5 Kb6 49. f4 Ng4+ 50. Kxh7 Nxe3 51. Bd3 a5 52. f5 $1 Nxf5 53. Bxf5 gxf5 54. h5
{drawn.}) 45. Bd3 a5 46. Bc2 Kb4 47. Kf4 a4 48. Bxa4 Kxa4 49. Kg5 $1 Kb3 50.
Kh6 Kc2 51. Kxh7 {
The game will be decided by the advance of the h-pawn. Larsen led.} 1-0

[Event "IBM Amsterdam"]
[Site "4"]
[Date "1964.??.??"]
[Round "9"]
[White "Pirc, Vasja"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "A38"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1964.??.??"]

1. Nf3 Nf6 2. g3 c5 3. c4 Nc6 4. Bg2 g6 5. b3 Bg7 6. Bb2 O-O 7. Nc3 d6 8. O-O
Bf5 9. d4 Qa5 10. e3 Rad8 11. Qd2 cxd4 12. Nxd4 Nxd4 13. exd4 d5 14. c5 b6 15.
cxb6 axb6 16. Rfe1 Rd7 17. Re2 Rc8 18. Na4 $6 Qxd2 19. Rxd2 Rc6 {
Maybe Pirc underestimated the position.} 20. f3 $2 (20. Rc1 Rxc1+ 21. Bxc1 {
nearly equalises.}) 20... Bh6 21. Re2 Rdc7 22. Bf1 $5 Bd3 $1 23. Re5 Bxf1 24.
Rxf1 e6 25. Re2 Nd7 $1 {Overprotection of b6 helps the rooks.} 26. b4 $2 Bg7
27. Rd2 Rc4 $1 28. a3 Ra7 $1 {
Larsen won by 7/9, before Donner (61/2), Dueckstein (6) and Lehmann (51/2).} (
28... Ra7 29. Nc3 Rxd4 {conquers a central pawn.}) 0-1

[Event "IBM Amsterdam"]
[Site "5"]
[Date "1965.??.??"]
[Round "3"]
[White "Parma, Bruno"]
[Black "Trifunovic, Petar"]
[Result "1-0"]
[ECO "C43"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1965.??.??"]

{AMSTERDAM 1965
Ten players competed from 23 until 31 July 1985. 
} 1. e4 e5
2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 Nxd6 7. Nc3 Nc6 8. Qf4 Bf5
9. Bb5 Qe7+ 10. Be3 Nxb5 11. Nxb5 Qb4+ 12. Qxb4 Bxb4+ 13. c3 Ba5 14. b4 Bd3 15.
a4 a6 {Trifunovic expects to get an equal game.} 16. Nbd4 $1 ({
Parma improves on} 16. O-O-O {(Stein - Kholmov, Moscow 1964).}) 16... Nxd4 (
16... Bb6 17. Nxc6 bxc6 {also leads to a white plus.}) 17. Bxd4 Bb6 18. O-O-O
Bxd4 19. Rxd3 Bf6 ({Or} 19... Bxf2 20. Rf1 Bb6 21. Re1+ Kf8 22. Rd7) 20. Re1+
Kf8 21. Rd7 Bxc3 22. Ree7 h5 23. Rxc7 Rh6 24. Kc2 Rc6 25. Rxf7+ Kg8 26. Rxc6
bxc6 27. Rf4 Bf6 28. Nd4 Rc8 29. Nb3 Re8 30. Nc5 Re2+ 31. Kb3 Rb2+ 32. Ka3 Rd2
33. a5 Be5 34. Rf3 Bd4 35. Rd3 Rxd3+ 36. Nxd3 Kf7 37. Kb3 1-0

[Event "IBM Amsterdam"]
[Site "5"]
[Date "1965.??.??"]
[Round "4"]
[White "Donner, Jan Hein"]
[Black "Karaklajic, Nikola"]
[Result "1-0"]
[ECO "E55"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1965.??.??"]

1. c4 e6 2. d4 Nf6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4
Nbd7 9. Qe2 b6 10. Rd1 cxd4 11. exd4 Bb7 12. d5 Bxc3 13. dxe6 Bxf3 14. Qxf3 Ne5
15. exf7+ Kh8 16. Rxd8 Nxf3+ 17. gxf3 Rfxd8 $2 {Black chooses the wrong rook.}
(17... Raxd8 18. bxc3 Rd7 19. Ba3 Rfxf7 {(Portisch-Donner, Hamburg 1965).}) 18.
bxc3 Rd1+ 19. Kg2 Nd7 20. f4 $1 h6 21. Bb2 Rxa1 22. Bxa1 Rd8 23. Bb2 g6 24. Bd5
$1 Kg7 25. c4+ Kf8 {
Black has stopped the passed pawn, but White has the initiative.} 26. Kf3 Nc5
27. Ba3 $6 (27. Kg4 $1 Rd6 28. f5 {
proceeds the attack and leaves Black in dire straits.}) 27... Rd6 ({Not} 27...
Rd7 $2 28. f5 $1) 28. Bb2 Rd7 29. Ke3 Re7+ 30. Be5 $1 Nd7 $6 (30... Rd7 $1 31.
h4 h5 32. f5 gxf5 33. Bf4 $1 Rxd5 $1 34. cxd5 Nd7 $1 {
offers a stronger resistance.}) 31. Kd4 Nxe5 32. fxe5 Rc7 33. e6 Ke7 34. Ke5
Rc8 35. f4 h5 36. h4 Rh8 37. a4 a6 38. Be4 Rc8 39. Bxg6 Rxc4 40. f5 Rc5+ 41.
Kf4 Rc8 ({Or} 41... b5 42. f6+ Kf8 43. e7# {(Belov).}) 42. Kg5 Rb8 43. Bxh5 b5
44. Bg4 bxa4 45. f6+ Kf8 46. Kg6 {
Euwe compares the splendid positional style of Donner with Capablanca's flair.}
1-0

[Event "IBM Amsterdam"]
[Site "5"]
[Date "1965.??.??"]
[Round "7"]
[White "Donner, Jan Hein"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[ECO "A53"]
[Annotator "JvR"]
[PlyCount "39"]
[EventDate "1965.??.??"]

1. d4 d6 2. Nf3 Nf6 3. c4 Bf5 4. Nc3 Nbd7 5. Nh4 e6 $6 ({Better is} 5... Bg6 6.
Nxg6 hxg6 {(Gruenfeld - Lasker, Maehrisch Ostrau 1923).}) 6. g3 Ne4 $6 {
Black dreams about operations in a closed centre, but White opens the game.} 7.
Nxf5 exf5 8. Nxe4 fxe4 9. Bg2 f5 10. f3 d5 11. cxd5 $6 (11. O-O {
prepares the attack.}) 11... Bb4+ $1 12. Bd2 Bxd2+ 13. Qxd2 Nf6 14. fxe4 fxe4
$6 (14... Nxe4 15. Qf4 Qxd5 {restores.}) 15. Qg5 O-O 16. O-O Qd7 17. Rf5 c6 $6
18. Raf1 h6 19. Qg6 Nxd5 $2 20. Bxe4 {Barendregt could lose like a beginner.}
1-0

[Event "IBM Amsterdam"]
[Site "5"]
[Date "1965.??.??"]
[Round "7"]
[White "Szabo, Laszlo"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[ECO "E43"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1965.??.??"]

1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 b6 7. Bd3 Bb7 8. f3
O-O 9. e4 Ne8 $5 {
He plays Capablanca's standard move in the Saemisch Variation.} 10. Be3 Nc6 11.
Ne2 Ba6 $5 {The bishop has been moved twice.} 12. Qa4 Na5 13. dxc5 d6 14. cxb6
axb6 15. Kf2 Qc8 16. Rhb1 Bxc4 17. Qc2 Bxd3 18. Qxd3 Nc4 {
Zuidema has equalised.} 19. Rb4 d5 ({The positional sacrifice} 19... Ne5 $1 20.
Qd1 f5 21. exf5 Rxf5 22. Bxb6 Nc4 {gives a sufficient compensation.}) 20. exd5
exd5 21. Bxb6 Qc6 22. Bd4 Rxa3 $2 (22... Nc7 $1 23. a4 Ne6 {
offers a minor pawn for a solid defence.}) 23. Rxa3 Nxa3 24. Nf4 $1 Nc7 25. Rb6
$1 Qa4 26. Rb7 $2 (26. Qf5 $1 {decides the game.}) 26... Rc8 $2 ({Necessary is
} 26... Nab5 $1) 27. Qf5 $1 Qc2+ 28. Qxc2 Nxc2 29. Be5 $1 Ne8 30. Nxd5 Kf8 31.
Rb8 Rxb8 32. Bxb8 f6 33. Ke2 Kf7 34. Kd2 Na3 35. Kd3 Ke6 36. c4 Nd6 37. Ne3 Nb7
38. Kc3 Na5 39. Bg3 {Our national hero gave a fine performance. Donner won the
event by 61/2/9, before Parma (6) and Szabo (51/2). The top three lost no
games.} 1-0

[Event "IBM Amsterdam"]
[Site "6"]
[Date "1966.??.??"]
[Round "2"]
[White "Szabo, Laszlo"]
[Black "Botvinnik, Mikhail"]
[Result "0-1"]
[ECO "B37"]
[Annotator "JvR"]
[PlyCount "46"]
[EventDate "1966.??.??"]

{AMSTERDAM 1966  Former world champion Botvinnik was the star from 5 until 16
July 1966.   } 1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Nc2 d6
7. e4 Nh6 8. h4 f5 $5 9. h5 fxe4 10. hxg6 $2 {The open file will favour Black.}
10... hxg6 11. Nxe4 Bf5 12. Nc3 $2 ({Better is} 12. Qe2) 12... Qa5 13. Bd2 Qe5+
14. Ne3 O-O-O 15. Qa4 Ng4 $1 16. Rxh8 Rxh8 17. Qb5 Qf4 18. Ncd1 Nd4 19. Qa5 Rh1
$1 20. Rc1 ({The pointe is} 20. Qxa7 Qe4 21. Ba5 Nh2) 20... Ne5 21. Qc7+ Kxc7
22. Nd5+ Kd7 23. Nxf4 g5 0-1

[Event "IBM Amsterdam"]
[Site "6"]
[Date "1966.??.??"]
[Round "4"]
[White "Botvinnik, Mikhail"]
[Black "Pomar Salamanca, Arturo"]
[Result "1-0"]
[ECO "D14"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1966.??.??"]

1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bb5
Bb4 9. Ne5 Qa5 10. Bxc6+ bxc6 11. O-O Bxc3 12. bxc3 Rc8 (12... Qxc3 13. Qc1
Qxc1 14. Rfxc1 {was played in Botvinnik-Tal, Moscow 1961.}) 13. c4 O-O 14. g4
$5 (14. c5 {occurred previously in the Exchange Variation (Porat - Pomar
Salamanca, Varna 1962).}) 14... Bg6 15. c5 Ne4 $5 16. f3 Nd2 17. Rf2 Nc4 18.
Nxc4 dxc4 19. Bd6 Rfe8 20. e4 f5 21. Qc2 fxe4 $2 {
The black position becomes weak.} 22. fxe4 Qa3 23. Re1 Qh3 24. Rg2 Rcd8 25. Rg3
Qh6 26. Qxc4 Qd2 27. Qc3 $5 Qxa2 28. Rg2 Qa6 29. h4 Rd7 30. h5 Bf7 31. Ra1 Qc8
32. Qf3 Qd8 33. g5 g6 34. h6 {The encirclement has been completed.} 34... e5 $5
35. Bxe5 Rb7 36. Qf4 a5 37. Rf2 Bb3 38. d5 $1 cxd5 39. c6 Ra7 40. c7 Qe7 41.
Bd6 {Black will be mated quickly.} 1-0

[Event "IBM Amsterdam"]
[Site "6"]
[Date "1966.??.??"]
[Round "6"]
[White "Botvinnik, Mikhail"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[ECO "D75"]
[Annotator "JvR"]
[PlyCount "113"]
[EventDate "1966.??.??"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d5 6. cxd5 Nxd5 7. d4 c5 8.
dxc5 Na6 9. c6 bxc6 10. Nbd2 Qc7 11. a3 $5 c5 $6 12. Nc4 $1 {
White has a favourable blockade.} 12... Bb7 13. Qc2 Rac8 14. Rd1 Rfd8 15. Bd2
Nb8 16. Bh3 e6 17. e4 $1 Nb6 18. Bf4 Qc6 19. Nd6 Rxd6 20. Rxd6 $6 (20. Bxd6 $1
Qxe4 21. Qxe4 Bxe4 22. Ne5 $1 {takes the material and keeps the restraint.})
20... Qxe4 21. Qxe4 Bxe4 22. Ng5 Bd5 23. Nxe6 $1 fxe6 24. Rxd5 exd5 25. Bxc8
Nxc8 26. Bxb8 Bxb2 27. Rb1 $1 Bxa3 {
Black has compensation for the exchange, but the white attack continues.} 28.
Rb7 c4 29. Be5 Bf8 30. Kf1 Ne7 31. Bd6 Kf7 32. Rxa7 Ke6 33. Ra6 Bg7 34. f4 Kd7
35. Bxe7 Kxe7 36. Ra7+ Kf8 37. Rc7 c3 38. Ke2 h6 39. Kd3 d4 40. g4 Bf6 $2 ({
Botvinnik prefers} 40... g5 $1 41. f5 Bf6 {and Black has a fortress.}) 41. h4
$1 Kg8 42. Ke4 Bg7 43. g5 hxg5 44. hxg5 Kf8 45. Kd3 Kg8 46. Rc6 Kf7 47. Ke4 Bh8
48. Rc7+ $1 {White loses a tempo.} 48... Kg8 49. Rc8+ Kh7 50. f5 $1 gxf5+ 51.
Kxf5 Bg7 52. Re8 $3 {Botvinnik has achieved zugzwang.} 52... d3 (52... Bh8 53.
g6+ Kg7 54. Rc8 {brings another zugzwang (Botvinnik).}) 53. g6+ Kh6 54. Re3 Bd4
55. Rxd3 c2 56. Rh3+ Kg7 57. Rh7+ {White will gain the last black pawn and
reach a theoretical win.   Botvinnik had won six games. Hereafter, Barendregt
defeated him tactically.} 1-0

[Event "IBM Amsterdam"]
[Site "6"]
[Date "1966.??.??"]
[Round "8"]
[White "Botvinnik, Mikhail"]
[Black "Robatsch, Karl"]
[Result "1-0"]
[ECO "D36"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1966.??.??"]

1. c4 Nf6 2. Nc3 e6 3. d4 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Qc2 O-O 8. Bd3
Nbd7 9. Nf3 Re8 10. O-O Nf8 11. Rae1 Ne4 12. Bxe7 Qxe7 13. Bxe4 dxe4 14. Nd2 b6
$5 ({Known is} 14... f5 {(Marshall - Rubinstein, Moscow 1925).}) 15. Qa4 $1 ({
Less favourable is} 15. Qxe4 Ba6 {(Netusil - Kacirek, Czechia 1993).}) 15... f5
$6 ({Better is} 15... Bb7 {(Mortensen-Letzelter, Haifa 1976).}) 16. f3 exf3 17.
Nxf3 Bb7 $6 (17... Be6 $1 18. Qxc6 Rac8 {counters.}) 18. Ne5 $1 Qe6 19. Qc2 Bc8
20. e4 $1 Qd6 $5 21. Rd1 Ne6 22. Qb3 $1 fxe4 23. Rf7 $1 a5 {
Robatsch makes a random move in a lost position.} ({Pointer are} 23... Nxd4 24.
Rf8+ $1 Kxf8 25. Qf7#) ({and} 23... e3 24. Ne4 Qd5 25. Qxe3 Nxd4 $2 26. Nf6+ $1
{(Botvinnik).}) 24. Nxe4 {Botvinnik finished the event with a quick draw
against Flohr. Mikhail had won by 71/2/9, two points before Pomar.} ({
White wins by} 24. Nxe4 Qd5 25. Rxg7+ $1 Kxg7 (25... Nxg7 26. Nf6+) 26. Qg3+
Kf8 27. Rf1+) 1-0

[Event "IBM Amsterdam"]
[Site "7"]
[Date "1967.??.??"]
[Round "2"]
[White "Langeweg, Kick"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "E14"]
[Annotator "JvR"]
[PlyCount "100"]
[EventDate "1967.??.??"]

{AMSTERDAM 1967  The number of participants in the main group went back to
twelve. Portisch and Kotov were the stars from 17-31 vii 1967.  } 1. c4 Nf6 2.
d4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 c5 6. O-O cxd4 7. exd4 Be7 8. b3 O-O 9. Bb2 d5
10. Nc3 Nc6 11. Rc1 Re8 12. Re1 dxc4 13. bxc4 Rc8 14. a3 Na5 15. Nb1 Bf8 16.
Nbd2 g6 17. Qe2 Bg7 18. Ne5 Nc6 19. Ndf3 Nd7 20. Nxc6 Bxc6 21. Bc3 Bxf3 22.
Qxf3 Nb8 23. Red1 Nc6 24. d5 exd5 25. cxd5 Nd4 26. Bxd4 Rxc1 27. Rxc1 Bxd4 {
Pawn d5 needs extra protection.} 28. g3 $2 ({Correct is} 28. Rd1 Re5 29. Bc4)
28... Re5 $1 29. Qg4 Qf6 30. Rc2 (30. Qxd4 $5 Re1+ 31. Rxe1 Qxd4 32. Be4 f5 33.
Bf3 Qc5 34. Re3 {creates a bastion.}) 30... Rxd5 31. Kg2 Ra5 32. Ra2 Qd6 33.
Qe4 Kg7 34. a4 Re5 35. Qf3 Qb4 36. Rc2 Bc5 37. Rc4 Qb3 38. Be2 Qb2 39. Bd3 Re3
40. Qd5 Qd2 41. Be4 Qxd5 42. Bxd5 Re2 43. Rf4 f6 44. g4 g5 45. Rf5 Rd2 46. Bc6
Kf7 47. h3 Ke6 48. Rf3 Bd4 49. Rf5 Kd6 50. Be8 Be5 {
Black will create a passed pawn on the queenside and win.} 0-1

[Event "IBM Amsterdam"]
[Site "7"]
[Date "1967.??.??"]
[Round "6"]
[White "Langeweg, Kick"]
[Black "Moisieev, Oleg"]
[Result "1-0"]
[ECO "A12"]
[Annotator "JvR"]
[PlyCount "183"]
[EventDate "1967.??.??"]

1. c4 Nf6 2. g3 c6 3. b3 d5 4. Bb2 Bf5 5. Nf3 e6 6. Bg2 Be7 7. O-O O-O 8. d3 h6
9. Nbd2 a5 10. a3 Nbd7 11. Qc2 Qb6 12. Bc3 Rfe8 13. Qb2 Bc5 14. Rae1 Bf8 15. e4
Bh7 16. Re2 Qc5 17. Ra1 Qb6 18. h3 Nc5 19. Ne1 Rad8 20. Qc2 dxe4 21. dxe4 Rd7
22. Re3 Red8 23. b4 axb4 24. axb4 Na6 25. c5 Qc7 $2 (25... Qb5 $1 26. Qb1 Nd5
$1 27. exd5 Bxb1 28. Bf1 Nxb4 29. Bxb5 Nxd5 30. Rxb1 cxb5 {
brings a plus for Black.}) 26. Nc4 Nd5 $1 27. Be5 $1 (27. exd5 $2 Bxc2 28. Be5
cxd5 29. Bxc7 Rxc7 30. Nxc2 dxc4 {equalises.}) 27... Nxe3 28. fxe3 Rd2 $1 29.
Bxc7 Rxc2 30. Nxc2 Nxc7 31. Ra7 Rd1+ 32. Kf2 Rc1 33. N2a3 Nb5 34. Rxb7 Nxa3 35.
Nxa3 Rc3 36. Ra7 Rb3 37. Ra4 Rb2+ 38. Kg1 Bg6 $2 (38... Ra2 39. Ra5 Ra1+ 40.
Kf2 Ra2+ 41. Kf3 Bxe4+ {brings counter-play.}) 39. e5 $1 Be7 40. h4 Bd3 41.
Bxc6 g5 42. Ra7 Kf8 43. Ra8+ Kg7 44. Re8 Bf8 45. hxg5 hxg5 46. Bg2 Ra2 47. c6
Rxa3 48. c7 Ra1+ 49. Kh2 Rc1 50. c8=Q Rxc8 51. Rxc8 Bxb4 {
White has a material advantage.} 52. Kg1 Bf5 53. Kf2 Ba3 54. Bf3 Bg6 55. Rb8
Bc5 56. Ke2 Ba3 57. Rb7 Bc5 58. Rb5 Ba3 59. Rb3 Bc5 60. Kd2 Kf8 61. Rb5 Ba3 62.
Be2 Kg7 63. Bd3 Bc1+ 64. Kxc1 Bxd3 65. Rb4 Bh7 66. Kd2 Kg6 67. Rb7 Kg7 68. Kc3
Bg6 69. Kd4 Bh5 70. Rb2 Bf3 71. Rf2 g4 72. Rc2 Kg6 73. Rc7 Bd1 74. Kc5 Kg7 75.
Kd6 Be2 76. Ke7 Kg6 77. Rc2 Bf3 78. Rc4 Kf5 79. Kd6 Be4 80. Rb4 Bd3 81. Rf4+
Kg6 82. Ke7 Bc2 83. Rf6+ Kg5 84. Kxf7 Bb3 85. Ke7 Bd5 86. Kd6 Bb3 87. e4 Bc2
88. Kxe6 Bxe4 89. Kd6 Bd3 90. Rf8 Kg6 91. e6 Kg7 92. e7 {
Langeweg and Ciric shared third place. Moiseev became fifth at the end.} 1-0

[Event "IBM Amsterdam"]
[Site "7"]
[Date "1967.??.??"]
[Round "7"]
[White "Donner, Jan Hein"]
[Black "Ghitescu, Theodor"]
[Result "1-0"]
[ECO "E66"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1967.??.??"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. Nc3 O-O 6. Nf3 Nc6 7. d5 Na5 8. b3 c5
9. Bb2 a6 10. Nd2 {Jan Hein plays his favourite variation.} 10... Rb8 11. O-O
b5 12. Qc2 e5 13. Rae1 $5 Bh6 14. f4 {Both contenders seek the confrontation.}
14... exf4 15. gxf4 Nh5 16. e3 f5 (16... bxc4 17. bxc4 Bg7 {is alright.}) 17.
Ne2 Rb7 18. Ng3 Nf6 19. cxb5 $5 axb5 20. Nf3 b4 ({Not} 20... Nxd5 21. Ng5) 21.
Ng5 Re7 22. Qd2 Bxg5 $6 {Black weakens his kingside.} 23. fxg5 Ng4 24. e4 f4 $1
25. Rxf4 Rxf4 26. Qxf4 {Black has sacrificed a pawn for counter- play.} 26...
Rf7 $2 ({Right is} 26... c4 $1 27. Rf1 (27. bxc4 $2 Qb6+ $1) 27... c3 28. Bc1
Ne5 {and Black has started a counteraction.}) 27. Qd2 c4 $5 28. Qxb4 cxb3 29.
axb3 Rb7 30. Qc3 Ne5 31. Ra1 Rb5 32. b4 Nac4 33. Bc1 Qb6+ 34. Kh1 Bb7 35. Rb1
Qf2 36. Nf1 Bc8 37. Ne3 Nf3 38. Bb2 Nxb2 39. Qxc8+ Kg7 40. Qd7+ Kf8 41. Qxd6+ {
Donner and Ghitescu shared the sixth and seventh place in the final standings.}
1-0

[Event "IBM Amsterdam"]
[Site "7"]
[Date "1967.??.??"]
[Round "8"]
[White "Portisch, Lajos"]
[Black "Kotov, Alexander"]
[Result "1-0"]
[ECO "A42"]
[Annotator "JvR"]
[PlyCount "115"]
[EventDate "1967.??.??"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nc6 5. Be3 e5 6. d5 Nb8 $6 ({Usual is} 6...
Nce7) 7. Bd3 c5 8. dxc6 Nxc6 9. Nge2 Nf6 10. f3 Be6 11. O-O O-O 12. Qd2 Ne8 {
The white advantage increases by black passivity.} 13. Ng3 Nc7 14. Rfd1 a6 15.
Bf1 Nd4 16. Nge2 $1 Bxc4 17. Nxd4 Bxf1 18. Rxf1 exd4 19. Bxd4 Bxd4+ 20. Qxd4
Nb5 21. Nxb5 axb5 22. Rfd1 $1 Qg5 23. Qxd6 Rfd8 24. Qb6 Rxd1+ 25. Rxd1 Rxa2 26.
Qd8+ $5 Qxd8 27. Rxd8+ Kg7 28. Rd2 {White can play for a win without any risk.}
28... Ra1+ ({More useful is} 28... Kf6 $1 29. Kf2 h5) 29. Kf2 Rc1 30. Kg3 Rb1
31. Kf4 b4 32. g3 b3 33. Ke5 h5 34. f4 Rc1 35. Kd4 b5 36. Rd3 Rc2 37. Rxb3 Rxh2
38. Ke3 h4 39. Kf3 h3 $2 {Kotov spoils the ending.} (39... Rh3 $1 40. Kg2 Rxg3+
41. Rxg3 hxg3 42. Kxg3 {draws.}) 40. Kg4 $1 Rh1 41. Rxb5 h2 42. Kh3 Re1 43.
Kxh2 Rxe4 44. Kg2 Re3 45. Kf2 Rd3 46. g4 Kh6 $2 {
The king goes in the wrong direction.} (46... f5 47. g5 Rd4 {probably draws.})
47. Rb6 Rd5 48. Ke3 f5 49. gxf5 Rxf5 50. b4 Rf8 51. Rd6 Rc8 52. Rd4 Rb8 53. Kd3
Kh5 54. Kc4 Rc8+ 55. Kd5 Rc1 56. b5 Rb1 57. Kc5 Kg4 58. b6 {
Portisch had defeated his main rival. He would win five and draw six games.}
1-0

[Event "IBM Amsterdam"]
[Site "7"]
[Date "1967.??.??"]
[Round "11"]
[White "Kotov, Alexander"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "A65"]
[Annotator "JvR"]
[PlyCount "93"]
[EventDate "1967.??.??"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Bd3 O-O 7. Nge2 e6 8. O-O
exd5 9. cxd5 Ne8 10. Bf4 $5 a6 11. a4 Nd7 12. Qd2 Ne5 13. Bg5 f6 14. Bh4 Bd7
15. f4 $1 Nxd3 16. Qxd3 b5 17. axb5 axb5 18. f5 b4 19. Rxa8 Qxa8 20. Nd1 Bh6
21. Bg3 Qb7 22. Ne3 Bxe3+ 23. Qxe3 gxf5 $2 {Ree allows a combination.} ({
Correct is} 23... g5 $1) 24. Bxd6 $1 Nxd6 25. Qg3+ Kf7 26. Qxd6 Bb5 27. Rxf5 $1
Qe7 28. Qxe7+ $5 {Black gets counter-play.} ({Preferable is} 28. Qe6+ $1 Qxe6
29. dxe6+ Kxe6 30. Nf4+) 28... Kxe7 29. Ng3 Ra8 30. Rh5 Ra1+ 31. Kf2 Ra2 32.
Rxh7+ Kd8 33. Nh5 Rxb2+ 34. Ke3 $2 ({Right is} 34. Kg3) 34... b3 35. Rb7 Ba6
36. Rb6 Re2+ 37. Kf3 b2 38. d6 Rd2 39. Nxf6 Kc8 40. e5 Bc4 $1 41. Kf4 Rxg2 $2 (
41... Rf2+ 42. Ke4 Re2+ 43. Kf3 Rd2 {draws, because White has to avoid} 44. Ne4
$2 Rd3+ 45. Kf4 Bb3) 42. d7+ Kc7 43. Rc6+ $1 Kxc6 44. d8=Q Rf2+ 45. Kg5 Rxf6
46. Qxf6+ Kb5 47. Qg6 {Ree made his debut in the main group. Kotov won the
second prize, following Portisch.} 1-0

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "3"]
[White "Donner, Jan Hein"]
[Black "Bouwmeester, Hans"]
[Result "1-0"]
[ECO "E54"]
[Annotator "JvR"]
[PlyCount "39"]
[EventDate "1968.??.??"]

{AMSTERDAM 1968  The number of players had increased to sixteen in the
grandmaster group! Heroes were Bronstein and Kavalek.   } 1. d4 Nf6 2. c4 e6 3.
Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 Qe7 9. a3 Ba5 10. Bd3
Bd7 11. Qe2 Bb6 12. dxc5 Qxc5 13. e4 Qh5 $6 14. e5 Ng4 $2 15. h3 Nh6 16. Ne4 $2
(16. Bxh7+ $1 Kxh7 17. Ng5+ Kg6 18. Qd3+ f5 19. Ne2 $1 Qh4 20. Nf4+ $1 Kxg5 21.
Nxe6+ {devastates the kingside.}) 16... Bc6 17. Bf4 Nd7 18. Rac1 Rfd8 $4 19.
Rxc6 $1 bxc6 20. Ng3 {The local level could be horrible.} 1-0

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "4"]
[White "Donner, Jan Hein"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "E62"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1968.??.??"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c6 7. O-O Qa5 8. h3 e5
9. d5 cxd5 10. cxd5 b5 11. Nd2 Bd7 $5 (11... b4 $6 12. Nce4 $1 {
was played in the second round (Ivkov-Kavalek, Amsterdam 1968).}) 12. a3 Qc7
13. Qb3 Qb6 14. a4 $5 bxa4 15. Qxb6 $5 ({More prudent is} 15. Qa3) 15... axb6
16. Nc4 b5 17. Nxd6 b4 18. Na2 Na6 19. Be3 Ne8 20. Ne4 f5 $1 {
Black gives an exchange for restriction on the queenside.} 21. Nc5 Nxc5 22.
Bxc5 b3 $1 23. Bxf8 Kxf8 24. Nb4 e4 25. Rab1 Rc8 26. f3 $1 Rc4 $1 27. Nc6 e3 $1
28. f4 Bxc6 29. dxc6 Rc2 30. Ra1 Rxe2 31. Rxa4 Rxb2 32. Rc4 $2 {
White should worry about the e-pawn.} ({Best is} 32. Bf3 $1 Rc2 33. Bd1 e2 34.
Bxc2 exf1=Q+ 35. Kxf1 bxc2 36. Rc4 Nc7 37. Rxc2 {and White survives.}) 32... e2
33. Rfc1 Rd2 34. Kf2 b2 0-1

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "5"]
[White "Langeweg, Kick"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "A37"]
[Annotator "JvR"]
[PlyCount "54"]
[EventDate "1968.??.??"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. O-O Nge7 7. d3 d6 8. Rb1
O-O 9. a3 a5 10. Ne1 Be6 11. Nd5 Rb8 $5 12. Nc2 b5 13. Nce3 bxc4 14. dxc4 f5
15. Nc3 $6 e4 16. Bd2 $6 {White plays passively.} 16... Nd4 17. Ncd5 Nxd5 18.
Nxd5 Bxd5 19. cxd5 Nb3 20. f3 $6 ({More useful is} 20. Bc3) 20... Nxd2 21. Qxd2
e3 $1 22. Qc2 a4 23. Qxa4 Bxb2 24. f4 Qf6 25. Kh1 Rfc8 26. Rfd1 c4 27. Qc2 Qc3
$1 ({Simplification by} 27... Qc3 28. Qxc3 Bxc3 29. Rxb8 Rxb8 30. Rc1 Bd2 {
brings a disaster.}) 0-1

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "7"]
[White "Bronstein, David"]
[Black "Kotov, Alexander"]
[Result "1-0"]
[ECO "B19"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1968.??.??"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3
Nd7 9. Bd3 Bxd3 10. Qxd3 Qc7 11. Bd2 e6 12. O-O-O O-O-O 13. c4 Ngf6 14. Bc3 Bd6
15. Ne4 Bf4+ $5 16. Kc2 Ne5 17. Nxe5 Bxe5 18. Nc5 Bd6 19. Nb3 Qe7 20. a3 Rd7
21. Qe2 Re8 22. Rhe1 Qf8 23. g4 Rde7 24. Qf3 Nh7 25. Na5 f5 $6 ({
More prudent is} 25... Kb8) 26. Nxc6 $1 {White gives a knight for three pawns.}
26... bxc6 27. Qxc6+ Rc7 28. Qa6+ Kb8 29. c5 Bf4 30. Rxe6 Rxe6 31. Qxe6 Ng5 32.
Qxf5 $1 Qxf5+ 33. gxf5 Ne4 34. Ba5 Rd7 35. Be1 Kb7 36. f3 Nf6 37. Kd3 Kc6 $2 (
37... Nxh5 $1 38. Kc4 Rf7 39. d5 Rxf5 40. b4 Nf6 41. Bf2 Be5 42. c6+ Kc7 43.
Bxa7 Rxf3 44. b5 Rf4+ {gives counter-play.}) 38. Bh4 $1 Nxh5 39. Kc4 Nf6 $5 40.
Bxf6 $1 gxf6 41. d5+ Kc7 42. d6+ Kc6 ({Or} 42... Bxd6 43. cxd6+ Rxd6 44. Rh1)
43. b4 a6 44. a4 Rb7 45. Rb1 Kd7 46. Kd5 Kd8 47. b5 axb5 48. axb5 Rg7 49. b6
Kc8 50. c6 1-0

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "10"]
[White "Kavalek, Lubomir"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "C16"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1968.??.??"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. a3 Bf8 6. f4 Ne7 7. Nf3 Qd7 $5 8. Be3
Nbc6 ({The alternative is} 8... Nf5 $1 {(Lanc-Banas, Stary Smokovec 1983).}) 9.
Bf2 Bb7 10. Bd3 O-O-O 11. b4 f6 12. Ne2 Kb8 13. c3 h6 14. h4 h5 15. Nc1 (15. a4
$1 {starts an attack on the queenside.}) 15... Nf5 16. Nb3 Nh6 $6 17. a4 $1 {
Now the offensive begins anyway.} 17... Ng4 18. a5 Ne7 19. Qd2 Nc8 20. O-O f5
21. Rfb1 b5 22. a6 Bc6 23. Nc5 Qe8 24. Ng5 $5 Bd7 $1 25. Ra5 c6 $1 {
Bronstein has closed the position.} 26. c4 $2 {Sacrifices help Black.} (26. Nb7
Be7 $1 27. Nxd8 Bxd8 28. Raa1 {
wins an exchange, but White cannot open the game.}) 26... dxc4 27. Bxc4 $6 bxc4
28. Nb7 Nxf2 29. Qxf2 Be7 30. b5 $2 cxb5 31. Nxe6 Bxh4 $2 ({Better is} 31...
Bxe6 32. Raxb5 Nb6 33. Rxb6 axb6 34. Rxb6 Kc7 35. Rxe6 Bxh4 $1) 32. Qxh4 Bxe6
33. Nxd8 Qxd8 34. Raxb5+ Nb6 35. Qxd8+ $2 (35. Qf2 $1 {tries to survive.})
35... Rxd8 36. Rxb6+ axb6 37. Rxb6+ Ka7 38. Rxe6 Rc8 39. Re7+ Kxa6 40. Re6+ Kb5
41. Re7 {
Kavalek adjourned the game and resigned, because the c-pawn cannot be stopped.}
0-1

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "10"]
[White "Kotov, Alexander"]
[Black "Ree, Hans"]
[Result "0-1"]
[ECO "E52"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1968.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O d5 8. cxd5
exd5 9. Ne2 Bd6 10. Ng3 $5 g6 11. b3 Nbd7 12. Bb2 Qe7 13. Rc1 Ne4 14. Bb5 f5
15. Ne2 Nb8 $5 16. Ne5 a6 17. Bd3 c5 18. f3 Bxe5 $5 19. dxe5 Ng5 20. h4 Ne6 $1
21. Qe1 Nc6 22. Qg3 Rad8 23. h5 Qg5 24. Qxg5 Nxg5 25. Kf2 Ne6 26. hxg6 hxg6 27.
g4 $6 {White weakens and later repairs.} 27... fxg4 28. f4 Ne7 29. Rg1 d4 30.
Bc4 Bd5 31. Rxg4 dxe3+ 32. Kxe3 Kf7 33. Bd3 Nf5+ 34. Bxf5 gxf5 35. Rg3 $2 {
Suddenly the defence can be demolished.} ({Correct is} 35. Rgg1 Rh8 36. Rcd1)
35... Be4 $1 36. Rc3 Rh8 $1 37. Bc1 Rh2 38. Rg1 Nc7 39. e6+ Kxe6 {
Ree played an excellent tournament and got revenge for a previous defeat.} 0-1

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "12"]
[White "Ivkov, Borislav"]
[Black "Ree, Hans"]
[Result "0-1"]
[ECO "A22"]
[Annotator "JvR"]
[PlyCount "90"]
[EventDate "1968.??.??"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 O-O 5. e4 c6 6. Nge2 d5 $5 {
Ree brings a positional sacrifice.} ({Known is} 6... d6 {
(Zilberman - Levitsky, Kiev 1964).}) 7. cxd5 cxd5 8. Nxd5 Nxd5 9. exd5 Bf5 ({
My voice has} 9... Bg4 $1 10. O-O Re8) 10. O-O Nd7 11. d3 Re8 12. Be3 Nf6 13.
Qb3 a5 14. h3 Qd7 15. Kh2 Be7 16. a4 h5 17. Rad1 Bb4 18. Nc3 Rac8 19. Nb5 h4
20. Bd2 (20. g4 $1 Bg6 21. Bg5 {gains a plus (Ree).}) 20... Bc5 $5 {
Ree gives another pawn.} 21. Bxa5 $5 e4 $1 22. d4 Bf8 23. Rc1 Nxd5 24. Rxc8
Rxc8 25. Re1 Nf6 26. Qd1 Bg6 27. Bd2 Qf5 28. Be3 Bb4 29. Rf1 Qe6 30. Bd2 $6 ({
More prudent is} 30. g4 Nd5 31. Kg1) 30... hxg3+ 31. Kxg3 $1 ({Not} 31. fxg3 $2
Bxd2 32. Qxd2 e3 {(Ree).} 33. d5 exd2 34. dxe6 Rc1) 31... Bxd2 32. Qxd2 Nd5 33.
Kh2 $6 (33. Qg5 $1 Rc2 34. Qd8+ Kh7 35. Qh4+ {leads to perpetual check.}) 33...
e3 $1 {White has an unexpected escape.} 34. fxe3 $2 (34. Qe2 $1 Be4 $1 (34...
Rc2 35. Bxd5 Qxd5 36. Qxe3) 35. Bxe4 Qxe4 36. Qg4 $1 Qxg4 37. hxg4 Rc2 38. Kg3
{seems to survive.}) 34... Rc2 $1 {
The remaining moves were blitzed and look chaotic, but Black kept a won game.}
35. Qa5 b6 36. Qa8+ Kh7 37. Qd8 f6 38. Na3 Rxg2+ 39. Kxg2 Nxe3+ 40. Kf2 Nxf1
41. Kxf1 Qxh3+ 42. Kf2 Qh2+ 43. Ke3 Qxb2 44. Qd6 Qc3+ 45. Kf2 Qd2+ {The Dutch R
ee, Langeweg and Donner performed well in the grandmaster group.  The
professional players were tired of the authoritarian chess federation and
started their own journal <->Schaakbulletin'. The presented game was the first
one analysed in the new journal.} 0-1

[Event "IBM Amsterdam"]
[Site "8"]
[Date "1968.??.??"]
[Round "13"]
[White "Ree, Hans"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "B99"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1968.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
h6 9. Bh4 Nbd7 10. O-O-O Qc7 11. Bd3 g5 12. fxg5 Ne5 13. Qe2 Nh7 14. Rhf1 $5
hxg5 15. Bg3 Nf8 16. Qf2 {The sharp opening has led to a white plus.} 16...
Nfg6 17. Nf3 Rh7 18. Na4 $5 Bd8 19. Qd4 $6 (19. Nc3 {keeps an edge.}) 19... Bd7
20. Nc3 Qb6 $1 21. Be2 Qxd4 22. Rxd4 Be7 {
The exchange has led to equality. White spoils the endgame, hereafter.} 23. Na4
$6 Bc6 24. Nb6 Rd8 25. Nd2 $2 ({More accurate is} 25. Rfd1 Nf4 26. Bf1) 25...
Nf4 $1 26. Rf2 d5 $1 {Black plays a great combination.} 27. exd5 Bc5 $1 {
Three pieces are attacked on the diagonal a7-g1.} 28. dxc6 Bxd4 29. c7 Bxf2 30.
Bxf2 Nxe2+ 31. Kd1 Nf4 32. cxd8=Q+ Kxd8 33. Ne4 Rxh2 {
Kavalek won the tournament by 101/2/15, half-a-point before Bronstein.} 0-1

[Event "IBM Amsterdam"]
[Site "9"]
[Date "1969.??.??"]
[Round "2"]
[White "Gheorghiu, Florin"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "C33"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1969.??.??"]

{AMSTERDAM 1969  The ninth event happened from 15 vii until 2 viii 1969.
Portisch participated and won for the third time!   } 1. e4 e5 2. f4 exf4 3.
Bc4 Nf6 4. Qe2 {White plays a rare variation of the Bishop Gambit.} 4... d5 $5
5. exd5+ Be7 6. Nf3 O-O 7. O-O c6 8. dxc6 Nxc6 {
Black has reached a plus in a solid line.} 9. c3 Bd6 10. d4 Bg4 11. Nbd2 Re8
12. Qf2 Bh5 13. h3 $6 ({More active is} 13. Qh4 $1 Bg6 14. Bb5) 13... h6 14.
Bb5 Bc7 15. Re1 Qd5 16. Bd3 Bg6 17. Bxg6 fxg6 18. b3 g5 $1 {The attack begins.}
19. Bb2 g4 20. hxg4 Nxg4 21. Qf1 $2 (21. Rxe8+ $1 Rxe8 22. Qh4 Ne3 23. Re1 {
defends properly.}) 21... Ne3 22. Qf2 g5 $1 23. c4 Qf5 24. Nf1 g4 $1 25. Ne5
Nxf1 26. Rxf1 Nxe5 27. dxe5 Qh5 $1 {
Suddenly the offense on the king becomes decisive.} 28. Qxf4 Bb6+ 29. Bd4 Rf8
$1 30. Qe3 Bxd4 31. Qxd4 g3 32. Rf6 $1 Rad8 $1 33. Qf4 Qh2+ 34. Kf1 Rxf6 35.
exf6 ({The pointe is} 35. Qxf6 Rf8) 35... Qh1+ 36. Ke2 Qxg2+ $1 0-1

[Event "IBM Amsterdam"]
[Site "9"]
[Date "1969.??.??"]
[Round "7"]
[White "Liberzon, Vladimir"]
[Black "Darga, Klaus"]
[Result "1-0"]
[ECO "C93"]
[Annotator "JvR"]
[PlyCount "125"]
[EventDate "1969.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. d4 d6 8. c3
O-O 9. h3 h6 10. Nbd2 Re8 11. Re1 {White has reached the main line at last.}
11... Bf8 12. Nf1 Bd7 13. Ng3 Na5 14. Bc2 Nc4 15. b3 Nb6 16. Nh2 c5 17. f4 cxd4
18. cxd4 Rc8 19. Nf3 exd4 $5 20. Bb2 Bc6 21. Nxd4 Bb7 22. Qd2 Nbd7 23. Rad1 Qb6
24. Kh2 Nc5 25. e5 dxe5 26. fxe5 Nh7 $2 ({Right is} 26... Nd5 27. Qf2 Ne6) 27.
Ndf5 $1 Rcd8 28. Nd6 Nf6 29. b4 $2 (29. exf6 $1 Rxe1 30. Qxe1 Bxd6 31. fxg7 Ne6
32. Kh1 $1 {attacks decisively.}) 29... Bxd6 30. exd6 Nce4 31. Bxe4 Nxe4 32.
Nxe4 Rxe4 33. Qc3 f6 34. Rxe4 Bxe4 35. Qb3+ Kh7 36. Qe6 Qe3 37. Qg4 Bd3 38. Qd4
Qxd4 39. Bxd4 Bc2 40. Bb6 Bxd1 $6 41. Bxd8 Bc2 42. Bxf6 $1 Bf5 43. Be7 g5 44.
Kg3 Kg6 45. Kf3 Kf7 46. Ke3 Be6 47. a3 Bd5 48. g3 Bg2 49. h4 gxh4 50. gxh4 Ke6
51. Kd4 h5 52. Kc5 Kd7 53. Kb6 Bf1 54. Bf8 Be2 55. Kxa6 Kc6 56. Ka5 $1 Bg4 57.
a4 bxa4 58. b5+ Kb7 59. Kxa4 Kb6 60. Bh6 Kc5 $5 61. Bf4 Bd7 $4 (61... Kb6 {
draws by accurate play.}) 62. Ka5 $1 Bc8 ({Or} 62... Bxb5 63. Be3+ $1 Kc4 64.
Kb6 $1) 63. Bg3 1-0

[Event "IBM Amsterdam"]
[Site "9"]
[Date "1969.??.??"]
[Round "8"]
[White "Portisch, Lajos"]
[Black "Donner, Jan Hein"]
[Result "1-0"]
[ECO "A31"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1969.??.??"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 d5 6. cxd5 Nxd5 7. Nxc6 bxc6
8. Bd2 Nxc3 $2 {This novelty will not be repeated.} 9. Bxc3 Qxd1+ 10. Rxd1 {
Donner has exchanged to a poor ending.} 10... f6 11. g3 e5 12. Bg2 Bd7 13. O-O
Rc8 14. Rxd7 $1 Kxd7 15. Bh3+ Kc7 16. Ba5+ Kb7 17. Bxc8+ Kxc8 18. Rc1 Kb7 19.
Rd1 Ka6 20. Bc3 Be7 21. Rd7 Re8 {Black has a miserable position.} 22. Kg2 Kb6
23. Kf3 h5 24. h3 a6 25. Ke4 g6 26. g4 hxg4 27. hxg4 a5 28. f3 Ka6 $6 ({
Better is} 28... a4 {but} 29. Be1 a3 30. b3 Kb5 31. Ra7 $1 {
brings Black in zugzwang.}) 29. a4 Kb6 30. Be1 Bb4 $6 31. Bf2+ $6 (31. Bxb4 $1
axb4 32. b3 {wins quickly.}) 31... Bc5 32. Bh4 Rf8 33. Kd3 f5 34. Bd8+ Ka6 35.
g5 Bd4 ({Or} 35... Re8 36. Kc4 Bb4 37. Bf6) 36. b3 Rh8 37. Rd6 Kb7 38. Bxa5 Rh1
39. Bc3 c5 40. Bxd4 exd4 41. Rxg6 Rc1 42. Rf6 Rc3+ 43. Kd2 Rxb3 44. g6 1-0

[Event "IBM Amsterdam"]
[Site "9"]
[Date "1969.??.??"]
[Round "11"]
[White "Damjanovic, Mato"]
[Black "Byrne, Robert"]
[Result "0-1"]
[ECO "B98"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1969.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 a6 6. Bg5 e6 7. Qe2 Be7 8. f4
h6 9. Bxf6 Bxf6 10. O-O-O Qc7 $5 11. h4 $5 Nc6 12. Nxc6 bxc6 13. Rh3 Rb8 14.
Qd3 d5 15. e5 Be7 16. Qg3 O-O 17. Bd3 Qb6 18. b3 Qa5 19. Kb1 Ba3 20. Ne2 Kh8
21. Qg4 c5 {So far, no great events have happened in the Sicilian Defence.} 22.
f5 $4 ({Correct is} 22. Rg3 Rg8 23. c4) 22... c4 $1 23. f6 Rg8 24. Bg6 $5 Qc7
$5 {The white bishop is helpless.} 25. Bxf7 Qxf7 26. Qf4 Kh7 27. g4 gxf6 28. g5
f5 29. Nd4 Qh5 30. Rg1 hxg5 31. Qf2 g4 32. Rhh1 Bc5 33. Rd1 0-1

[Event "IBM Amsterdam"]
[Site "9"]
[Date "1969.??.??"]
[Round "12"]
[White "Gheorghiu, Florin"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "E84"]
[Annotator "JvR"]
[PlyCount "50"]
[EventDate "1969.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Nge2 Rb8 8. Qd2
Re8 9. Rd1 a6 10. Nc1 e5 11. dxe5 Nxe5 12. Be2 b5 $1 {
This novelty leads to great complications.} 13. cxb5 axb5 14. Bxb5 Nxe4 $1 15.
fxe4 Rxb5 $1 16. Nxb5 Nc4 {Black has delivered a rook sacrifice.} 17. Qf2 $6 (
17. Bg5 $1 Qd7 18. Qc2 Qxb5 19. O-O Qb6+ 20. Kh1 Ba6 {brings about equality.})
17... Rxe4 18. O-O $1 Nxe3 19. Qxf7+ Kh8 20. Qxc7 Qxc7 21. Nxc7 Nxd1 22. Rxd1
Bd4+ 23. Kf1 $2 ({Correct is} 23. Kh1 $1 Bg4 24. Rf1 Bxb2 {(Belov)} 25. h3 Bd7
26. Nd3 {and White plays a difficult ending.}) 23... Bg4 24. Rd2 $5 ({
The pointe is} 24. Re1 Rf4#) 24... Be3 25. Rc2 Rd4 0-1

[Event "IBM Amsterdam"]
[Site "9"]
[Date "1969.??.??"]
[Round "13"]
[White "Kavalek, Lubomir"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "C93"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1969.??.??"]

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 h6 10. d4 Re8 11. Nbd2 Bf8 12. Nf1 Na5 13. Bc2 c5 14. b3 Nc6 15. Ng3
Bd7 16. d5 Ne7 17. c4 Ng6 18. Be3 $5 ({Spassky played} 18. Nf5 {
against Portisch in Lugano 1968.}) 18... Nh7 19. Qd2 Nh4 20. Nxh4 Qxh4 21. Nf5
$5 Bxf5 22. exf5 bxc4 23. f3 cxb3 24. axb3 Qe7 25. b4 Reb8 $5 {
Black has to move pieces to the queenside after the pawn sacrifice.} 26. bxc5
dxc5 27. Be4 Ra7 $1 {White threatened d6.} 28. Reb1 Rxb1+ 29. Rxb1 Qc7 30. Qb2
Nf6 31. Qb8 Nd7 32. Qxc7 Rxc7 33. Ra1 Ra7 34. Ra5 Bd6 35. Bd3 Kf8 36. Rxa6 Rxa6
37. Bxa6 Ke7 38. Kf1 Bc7 39. Bb5 Bb6 40. Bxd7 $4 (40. Ke2 $1 Nf6 41. Bc4 Kd6
42. Kd3 Nxd5 43. Bd2 Bc7 44. g4 {draws.}) 40... Kxd7 41. h4 ({Or} 41. f6 $1 g5
$1 42. h4 gxh4 43. Bxh6 Kd6 44. Bg5 Kxd5 45. Bxh4 c4 46. Ke2 e4 $1 47. fxe4+
Kxe4 {and Black will win.}) 41... f6 42. Kf2 Kd6 43. Kg3 h5 44. Kf2 Bd8 45. g4
hxg4 46. fxg4 Kxd5 47. Ke2 c4 48. h5 Ke4 49. h6 gxh6 50. Bxh6 c3 51. Kd1 Kd3
52. Kc1 Be7 53. Kb1 e4 {Portisch would win eight and draw seven encounters.}
0-1

[Event "IBM Amsterdam"]
[Site "9"]
[Date "1969.??.??"]
[Round "15"]
[White "Stein, Leonid"]
[Black "Hartoch, Robert"]
[Result "1-0"]
[ECO "B10"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1969.??.??"]

1. Nf3 d5 2. g3 c6 3. Bg2 g6 4. d3 Bg7 5. Nbd2 e5 6. e4 Ne7 7. O-O O-O 8. b4 $5
{Stein plays his favourite line.} 8... Na6 $5 {Hartoch gives a witty answer.}
9. a3 Nc7 10. Bb2 d4 $6 {Pawn d4 will become a weakness.} ({Solid is} 10... f6
$1 11. Re1 b6 {(Kasimdzhanov - Khenkin, Moscow 2001).}) 11. c3 Bg4 12. Qc2 Ne6
13. cxd4 Bxf3 14. Nxf3 Nxd4 15. Nxd4 exd4 16. f4 $1 {
Stein wants to win and starts an attack.} 16... Qd7 17. Qc5 $1 b6 18. Qc4 Rac8
19. f5 Qd6 $6 (19... gxf5 20. Bh3 c5 $1 21. b5 Qe6 {gives a proper defence.})
20. Rae1 g5 21. Bf3 Be5 22. Re2 b5 $6 {Black plays passively.} ({
The natural move is} 22... c5) 23. Qc1 f6 24. Rc2 Rc7 25. Rc5 Nc8 26. Kg2 Nb6
27. Bd1 Nd7 28. Bb3+ Kg7 29. Rc2 Ra8 30. Qd1 Qe7 31. Qd2 Rh8 32. Rfc1 Nb8 33.
Be6 h5 34. h4 g4 35. Rc5 Qd6 $2 {Black allows a combination.} ({Better is} 
35... Rd8 $1) 36. Rxe5 $1 Qxe5 ({The pointe is} 36... fxe5 37. Qg5+ Kf8 38.
Qf6+ Ke8 39. Qxh8+ {(Belov).}) 37. Rc5 Qd6 38. e5 $1 Qd8 39. exf6+ Kf8 ({Or} 
39... Qxf6 40. Qf4 $1) 40. Qf4 Na6 41. Bxd4 $1 Nxc5 42. Bxc5+ Ke8 43. Qe5 Rhh7
44. Bd7+ $1 {Portisch won magnificently (111/2/15), in front of Liberzon (10),
Vasiukov (91/2), Damjanovic (9) and Stein (9).} 1-0

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "2"]
[White "Polugaevsky, Lev"]
[Black "Geller, Efim"]
[Result "1-0"]
[ECO "E94"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1970.??.??"]

{AMSTERDAM 1970  The Soviets had little success with lesser players in the IBM
tournament. They sent a strong delegation in 1970, consisting of world
champion Spassky, Polugaevsky and Geller. Dutch losers were trailing at the
bottom from 13 vii until 1 viii 1970.   } 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4
d6 5. Be2 O-O 6. Bg5 Nbd7 7. Qd2 c6 8. Nf3 e5 9. O-O exd4 10. Nxd4 Nc5 11. Qf4
$5 {Polugaevsky plays a prohibitive move against Geller's favourite variation.}
11... Qe7 12. Rad1 Ncxe4 $6 ({The more solid} 12... Qe5 $5 {
was played in the next round (Hartoch - Gligoric).}) 13. Nxe4 Qxe4 14. Qxd6 Nd7
15. Bf3 Qe5 16. Bf4 $1 Qa5 $1 ({Less appropriate is} 16... Qxd6 $6 17. Bxd6 Rd8
18. Nxc6 $1 bxc6 19. Bxc6) 17. b4 $5 Qxa2 18. c5 a6 19. Qc7 Nf6 $2 ({Correct is
} 19... a5 $1 20. Nxc6 bxc6 21. Bxc6 axb4 22. Bxa8 Qxa8 23. Rxd7 Bxd7 24. Qxd7
Rc8 {and equality.}) 20. Nxc6 $1 {White forces a win.} 20... bxc6 21. Bxc6 Bg4
22. Rd2 Qe6 23. Bxa8 Rxa8 24. f3 $1 Ne8 25. Qb6 Bf5 26. g4 $1 Qc4 27. Qb7 Qxf4
28. Qxa8 Bd4+ 29. Kh1 Bd7 30. c6 Bxc6 31. Qxc6 Qxd2 32. Qxe8+ Kg7 33. Qe1 Qb2
34. Qb1 Qe2 35. Qd1 Qb2 36. Qd3 Bc3 37. Rb1 Qa3 38. Qe3 Bxb4 39. Qd4+ 1-0

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "4"]
[White "Ree, Hans"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "A24"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1970.??.??"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. d3 e5 7. O-O Nbd7 8. Rb1
a5 9. a3 c6 10. Nd2 $5 Nb6 11. b4 axb4 12. axb4 d5 13. cxd5 $6 ({Superior is} 
13. c5 {(D'Amore - Cramling, Groningen 1982).}) 13... cxd5 14. Nb3 d4 15. Ne4
Nxe4 16. dxe4 Na4 17. Bd2 b6 18. Nc1 $2 {White is doomed after this move.} ({
He should try} 18. Qc2 $1 Bg4 19. Qd3 Nc3 20. Bxc3 dxc3 21. Qxc3 Bxe2 22. Rfe1)
18... Be6 19. Nd3 Nc3 $1 20. Bxc3 dxc3 21. Qc2 Qd4 22. Ra1 Bc4 23. Rfb1 Bxd3
24. exd3 Rxa1 25. Rxa1 b5 26. Rb1 Rc8 27. Bf3 Bf8 28. Bd1 Bxb4 29. Qe2 Rc6 30.
Qe3 Bc5 31. Qxd4 Bxd4 32. Bb3 c2 $1 33. Rc1 Rc3 $1 34. Bxc2 b4 0-1

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "5"]
[White "Spassky, Boris"]
[Black "Ciric, Dragoljub"]
[Result "1-0"]
[ECO "E07"]
[Annotator "JvR"]
[PlyCount "57"]
[EventDate "1970.??.??"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O c6 7. b3 Nbd7 8. Bb2
b6 9. Nbd2 Bb7 10. Rc1 Rc8 11. e3 c5 12. Qe2 Rc7 13. cxd5 Bxd5 14. e4 Bb7 15.
e5 $5 (15. Ne5 {was played in Donner - Kramer, Beverwijk 1955.}) 15... Nd5 16.
Nc4 Qa8 $6 (16... Qb8 $1 17. Nd6 Bxd6 18. exd6 Rcc8 {defends more accurately.})
17. Nd6 $1 Bxd6 $5 18. exd6 Rc6 19. dxc5 bxc5 20. Ng5 Rxd6 {
White has given a pawn.} 21. Rfd1 Ra6 $2 22. Qe4 $2 ({The sacrifices by} 22.
Nxh7 $1 Kxh7 23. Qh5+ Kg8 24. Bxg7 $1 f5 25. Qg6 Qe8 26. Qg5 $1 Kh7 27. Qh6+
Kg8 28. Bf3 {take advantage of the defensive error.}) 22... f5 ({Not} 22... g6
$2 23. Nxh7 $1) 23. Qc4 Qe8 $2 ({Right is} 23... Re8) 24. Re1 Rxa2 25. Rxe6 Qa8
26. Bxd5 Bxd5 27. Qh4 $1 h6 28. Qxh6 $1 {Spassky ends the game elegantly.}
28... Nf6 29. Rxf6 $1 1-0

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "7"]
[White "Geller, Efim"]
[Black "Uhlmann, Wolfgang"]
[Result "0-1"]
[ECO "C09"]
[Annotator "JvR"]
[PlyCount "93"]
[EventDate "1970.??.??"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O cxd4 8.
Nb3 Nge7 9. Nbxd4 O-O 10. Bg5 f6 11. Be3 $1 ({Geller diverts from} 11. Bh4 {
(Kupreichik - Uhlmann, Schwedt 1969).}) 11... Ne5 12. Re1 a6 13. Bf1 Kh8 (13...
Bd7 {will draw in Unzicker - Uhlmann, Siegen 1970.}) 14. h3 Bd7 15. c3 Rc8 16.
a4 Re8 17. Nxe5 fxe5 18. Nf3 h6 19. a5 Rc6 20. Bb6 Qb8 $1 21. Rc1 $2 ({
Correct is} 21. c4 e4 22. Nh4) 21... Rf8 $1 22. c4 e4 23. Nd2 Rxb6 $1 {
Uhlmann starts a formidable attack.} 24. axb6 Bc5 25. Re2 Rxf2 26. Rxf2 e3 27.
cxd5 $2 (27. Kh1 exf2 28. Bd3 {avoids a crash.}) 27... exf2+ 28. Kh1 Nf5 29.
Ne4 Bxb6 $2 {Wolfgang misses the decision.} (29... Qf4 30. Rxc5 Qxe4 31. Rc1
Ng3+ 32. Kh2 Qf4 {wins quickly.}) 30. Qf3 Qe5 31. Bd3 $2 (31. Nxf2 $1 Qxb2 32.
Nd3 $1 {escapes.}) 31... Qxd5 32. Nc5 Qxf3 33. gxf3 Bxc5 34. Rxc5 Ne3 $1 35.
Rc1 Kg8 36. Kh2 Bb5 $1 37. Rc8+ Kf7 38. Kg3 Bxd3 39. Rc7+ Kf6 40. Kxf2 Nd1+ 41.
Kg3 Nxb2 42. Rxb7 Nc4 43. h4 a5 44. Rd7 Bc2 45. Rc7 Bb3 46. Kf4 a4 47. Rb7 {
Uhlmann competed with Polugaevsky and Spassky for the first place.} 0-1

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "8"]
[White "Ciric, Dragoljub"]
[Black "Geller, Efim"]
[Result "0-1"]
[ECO "C88"]
[Annotator "JvR"]
[PlyCount "136"]
[EventDate "1970.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4
Bb7 9. d3 d6 10. Bd2 b4 11. c3 d5 12. exd5 Nxd5 13. Nxe5 Nxe5 14. Rxe5 Bf6 15.
Re1 Qd6 $5 {They play a belated Marshall Attack.} (15... c5 {
occurred in Ivkov - Smejkal, Prague 1970.}) 16. d4 Rae8 17. Qf3 c5 18. c4 $5 {
White should exchange.} 18... Rxe1+ 19. Bxe1 Qe7 $1 20. Nd2 Nc3 $1 21. d5 Ne2+
22. Kf1 Bxb2 23. Rb1 Re8 $1 24. Ne4 $2 Nd4 $1 25. Qd3 Nxb3 $1 26. Rxb2 Qxe4 27.
Qxe4 Rxe4 28. Rxb3 a5 29. Re3 Rxe3 30. fxe3 Ba6 {
Black has regained the pawn and will win more material.} 31. e4 Bxc4+ 32. Kf2
Bb3 33. Ke3 Bxa4 34. Kd3 Bb5+ 35. Kc2 c4 36. Bf2 Ba4+ 37. Kb1 Bb5 38. Bb6 a4
39. Bc5 b3 40. Kb2 f6 41. Kc3 Kf7 42. Ba3 Ke8 43. Bc5 Kd8 44. Ba3 Kd7 45. Kd4
Kc7 46. Kc3 Ba6 47. Bf8 Bb7 $5 48. Ba3 Ba6 49. Bf8 Bb7 50. Ba3 Kd7 51. Kd4 Kc8
52. Kc3 Kc7 53. Kd4 Kb6 54. Kc3 Kb5 55. Kd4 $2 b2 $1 56. Bxb2 Kb4 {
White cannot stop the a-pawn.} 57. d6 $2 ({But} 57. g4 Kb3 58. Ba1 h6 59. h3 $1
{keeps fighting chances.}) 57... Bc8 58. Bc3+ Kb3 59. Ba1 a3 60. Bc3 a2 61. Ba1
Be6 62. h3 h5 63. h4 Bc8 64. Bc3 Bd7 65. Ba1 Be6 $1 66. Bc3 Kc2 67. d7 Bxd7 68.
Kxc4 Bc6 {
Geller played a great second half, but could not catch up with the leaders.}
0-1

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "8"]
[White "Donner, Jan Hein"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "D26"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1970.??.??"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Nc3 a6 7. dxc5 Qxd1+ 8.
Kxd1 Bxc5 {The Dutchmen were afraid of Spassky.} 9. Bd3 $5 Nbd7 10. Bd2 b6 11.
Ne4 Bb7 12. Nxc5 $2 ({Correct is} 12. Nxf6+ Nxf6 13. Ke2) 12... Nxc5 13. Ke2
Nxd3 14. Kxd3 Ne4 15. Ke2 a5 16. b4 $5 ({Or} 16. Rhc1 Ba6+ $1 17. Ke1 Nc5 $1)
16... Nxd2 $1 17. Kxd2 axb4 18. Rhb1 Ra4 $1 19. Ne1 Ke7 20. Rb2 Rha8 21. Nc2 b3
$5 22. Rxb3 Rxa2 23. Rxa2 Rxa2 24. f3 Bc6 $1 25. Ra3 Rxa3 26. Nxa3 Kd6 27. Kc3
Kc5 28. Nc2 Ba4 29. Nb4 Bb5 30. Nc2 Bf1 31. g3 Be2 32. f4 Kd5 33. Nd4 Bg4 34.
Kd3 Bf5+ 35. Kc3 Ke4 36. Kd2 Bg4 37. Nb5 Kf3 38. Nd6 Kg2 0-1

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "9"]
[White "Hort, Vlastimil"]
[Black "Ciric, Dragoljub"]
[Result "1-0"]
[ECO "B14"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1970.??.??"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. Bg5 O-O 8. c5
b6 9. b4 a5 10. a3 Ne4 11. Bxe7 Qxe7 12. Nxe4 $1 ({Hort betters} 12. Na4 {
(Kan - Makogonov, USSR 1939).}) 12... dxe4 13. Ne5 Rd8 14. Bb5 axb4 15. axb4
Rxa1 16. Qxa1 bxc5 $2 ({Preferable is} 16... Qb7) 17. dxc5 $1 Qb7 $6 (17... e3
18. O-O f6 {tries to counter.}) 18. Qa5 $1 Qd5 19. O-O $1 {
Hort attacks elegantly.} 19... Rf8 ({Notice} 19... Qxe5 20. Qxd8#) 20. Qa1 $1
Rd8 21. Bc4 Qd4 22. c6 Qb6 23. b5 Qc7 24. Qb2 Qb6 25. Qc2 f5 26. c7 $1 1-0

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "9"]
[White "Polugaevsky, Lev"]
[Black "Uhlmann, Wolfgang"]
[Result "1-0"]
[ECO "E74"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1970.??.??"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 O-O 6. Bg5 c5 7. d5 e6 8. Qd2
exd5 9. exd5 Re8 10. Nf3 Bg4 11. O-O Nbd7 12. h3 Bxf3 13. Bxf3 {
Polugaevsky has an excellent experience with this variation.} 13... a6 14. a4
Qe7 15. Rae1 $5 Qf8 16. Bd1 Rxe1 17. Rxe1 Re8 18. Rxe8 Qxe8 19. Bc2 Nb6 20. b3
Nbd7 21. Bf4 Qe7 22. Qe2 Kf8 23. Qxe7+ Kxe7 24. a5 {
White has a plus in the endgame.} 24... h5 25. Bd2 Ne8 26. g3 Bd4 27. Kg2 Ng7
28. f4 Nf5 29. Nd1 Nh6 30. Kf3 f5 $1 31. Bd3 Kd8 32. Ne3 Ke7 33. Nc2 Bb2 34.
Ke3 Nf6 35. Ne1 Bd4+ 36. Kf3 Bb2 37. Ng2 Nd7 38. Nh4 $1 {
The attack on the kingside begins.} 38... Kf6 39. Ke3 Nf7 40. Bc2 Ba1 41. Ke2
Bb2 42. Be1 {Black should keep the position closed.} 42... Ba1 $2 (42... Nh6 $1
{prevents the next advance.}) 43. g4 $1 hxg4 44. hxg4 fxg4 45. Nxg6 Kg7 ({Or} 
45... Bb2 46. Kf2 Bd4+ 47. Kg3 Nh6 48. Nh4 Nf8 49. Bd1) 46. Nh4 Kf8 47. Bf5 Nf6
48. Bc8 Nd8 49. Nf5 Nh5 50. Bd2 Bd4 51. Nxd4 {Polugaevsky had defeated another
star. Boris Spassky highly praised the level of Polu's games.} 1-0

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "11"]
[White "Gligoric, Svetozar"]
[Black "Uhlmann, Wolfgang"]
[Result "0-1"]
[ECO "D86"]
[Annotator "JvR"]
[PlyCount "138"]
[EventDate "1970.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8.
Ne2 Nc6 9. Be3 Na5 10. Bd3 c5 11. d5 c4 12. Bc2 e6 13. dxe6 Bxe6 14. O-O Qe7
15. Nd4 Rfe8 16. Qd2 Bd7 17. Bh6 Bxh6 18. Qxh6 Qa3 19. Qe3 b5 20. Rab1 $5 a6
21. f4 Nc6 22. Rbe1 $6 ({More direct is} 22. f5 $1 Nxd4 23. Qxd4 Rad8 24. Qf6 {
and White attacks.}) 22... Nxd4 23. Qxd4 Rad8 {
White should play for perpetual check.} 24. Qf6 $1 (24. f5 $1 Qxa2 25. Qf6 Bxf5
$1 26. exf5 Qxc2 27. Re3 $1 Rf8 28. fxg6 fxg6 29. Qe6+ {brings a perpetual.})
24... Bc8 $1 25. Rd1 Rxd1 26. Rxd1 Bg4 27. Rf1 Qxa2 28. f5 Rf8 29. Qg5 Qxc2 30.
f6 Kh8 31. Qxg4 Qxc3 32. h3 Qe3+ 33. Kh2 c3 34. Qd7 Qxe4 35. Qc7 b4 36. Rf4 Qe6
37. Rxb4 Qxf6 38. Rb6 Qd4 39. Rxa6 Re8 40. Rc6 Re3 41. Rc4 Qd2 42. Qxf7 Qd6+
43. Kg1 Re1+ 44. Kf2 Qd2+ 45. Kg3 Qd3+ 46. Kg4 Re4+ 47. Rxe4 Qxe4+ 48. Kg3 Qe3+
49. Kh4 Qc5 50. g4 c2 51. g5 Qc8 52. Qe7 c1=Q 53. Qe5+ Kg8 54. Qd5+ Kf8 55.
Qd6+ Ke8 56. Qe5+ Kd7 57. Qd5+ Ke7 58. Qe5+ Kd7 59. Qd4+ Kc6 60. Qc3+ Kb5 61.
Qb3+ Ka5 62. Qa3+ Kb6 63. Qb3+ Ka7 64. Qa3+ Kb8 65. Qb4+ Qb7 66. Qd6+ Qbc7 67.
Qf8+ Ka7 68. Qf2+ Q1c5 69. Qa2+ Kb6 0-1

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "13"]
[White "Gligoric, Svetozar"]
[Black "Janosevic, Dragoljub"]
[Result "1-0"]
[ECO "A79"]
[Annotator "JvR"]
[PlyCount "69"]
[EventDate "1970.??.??"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Nf3 O-O 7. Be2 e6 8. O-O
exd5 9. cxd5 Re8 10. Nd2 Na6 11. f3 Nc7 12. a4 b6 13. Nc4 Ba6 14. Bg5 Qd7 15.
Kh1 $5 h6 16. Bd2 Bxc4 $6 17. Bxc4 {Gligoric has a strong centre.} 17... a6 18.
Qe2 Qe7 19. Rae1 {
White has a slight advantage and prepares the advance quietly.} 19... Nd7 20.
f4 $1 Qh4 21. Qf3 Rab8 22. g3 Qd8 23. e5 $1 b5 $1 {Black has to counterattack.}
({No good is} 23... dxe5 $2 24. d6 $1 Ne6 25. fxe5) 24. Bd3 c4 25. Bc2 b4 $1
26. Ne4 dxe5 $1 {Black can capture in the centre at last.} 27. f5 $1 Nxd5 $2 ({
Relatively best is} 27... Rf8 {but} 28. Qg4 $1 Nxd5 29. fxg6 N7f6 30. gxf7+
Rxf7 31. Qg6 $1 b3 32. Bb1 {leads to an irrefutable offensive by White.}) 28.
fxg6 N7f6 29. gxf7+ Kxf7 30. Qh5+ Kg8 31. Qg6 $1 Qe7 32. Bxh6 Qf7 33. Nxf6+
Nxf6 34. Rxf6 $1 Qxf6 35. Qh7+ {White will play 36. Bxg7!   Gligoric was
another strong participant. He demonstrated his great ability as an attacker.}
1-0

[Event "IBM Amsterdam"]
[Site "10"]
[Date "1970.??.??"]
[Round "15"]
[White "Csom, Istvan"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "B22"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1970.??.??"]

{Polugaevsky was leading by half-a-point on Spassky, before the last round
began. Boris had his first luck, when Polu drew in eight moves with Langeweg. 
  } 1. e4 c5 2. c3 e6 3. d4 d5 4. exd5 exd5 5. Nf3 Nc6 6. Be2 Nf6 7. O-O Be7 8.
dxc5 Bxc5 9. Nbd2 O-O 10. Nb3 Bb6 11. Bg5 Re8 12. Qd3 h6 13. Bxf6 Qxf6 14. Rae1
Bf5 $1 15. Qd2 ({The pointe is} 15. Qxd5 $2 Rad8 $1 16. Qb5 Rxe2 $1 17. Qxe2
Bd3) 15... Be4 16. Nbd4 Re7 17. Bd1 Rae8 18. b4 Nxd4 $6 (18... Qg6 $1 {
starts an attack.}) 19. Nxd4 Qg5 20. Qxg5 hxg5 21. Bb3 Bd3 22. Rxe7 Rxe7 23.
Rd1 Bxd4 24. cxd4 Bc4 25. Bxc4 dxc4 26. d5 b5 27. Kf1 f6 28. a4 bxa4 29. Rd4 $4
{Spassky has fortune for the second time.} 29... a3 $1 30. Rxc4 a2 31. Rc1 Rc7
$1 32. Rd1 Rc2 $1 33. d6 Rd2 $1 34. Rc1 Kf7 {Polugaevsky (111/2/15) and
Spassky (111/2) won before Uhlmann (101/2), Geller (10), Gligoric (81/2) and
Hort (81/2). So the top of the event was very strong.   Spassky was a bit
embarrassed about the shared first prize, but he was told not to be ashamed.}
0-1

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "1"]
[White "Gligoric, Svetozar"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "D07"]
[WhiteElo "2600"]
[BlackElo "2620"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1971.??.??"]

{AMSTERDAM 1971  Smyslov and Keres were the Soviet stars from 13 until 31 vii
1971. Vasily had a great start.   } 1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. d5 Ne5 5.
Bf4 $5 Ng6 6. Bg3 e5 7. dxe6 Bxe6 8. Nf3 Nf6 9. Nd4 Bd7 10. e3 Bb4 11. Bxc4 O-O
{The Chigorin Defence has led to an equal position.} 12. Qc2 c6 13. h3 Qe7 14.
O-O Bxc3 15. bxc3 Ne4 16. Bh2 c5 17. Nf3 Bc6 18. Bd3 f5 19. Rad1 Rad8 20. Be2
Qf6 21. Rxd8 Rxd8 22. Rc1 h6 23. Bd3 Kh8 24. Ne1 $6 {White plays meekly.} ({
Better is} 24. c4) 24... c4 $1 25. Bxe4 $1 fxe4 26. Qe2 b5 27. Bg3 Ne7 28. Qb2
Nd5 29. Qa3 $6 ({Wiser is} 29. Rd1) 29... a5 $1 30. Kh2 h5 31. h4 Qf8 32. Qb2
$6 {White should exchange the queens.} 32... Nf6 33. Kg1 Ng4 34. Qe2 Qf6 35. f3
$5 exf3 36. gxf3 Ne5 37. e4 Nd3 38. Rc2 Nxe1 39. Bxe1 Rd3 40. Kg2 Qg6+ 41. Bg3
Kh7 42. Rc1 Qf6 43. Be1 $2 {Otherwise White loses pawn c3.} 43... Qf4 $1 (43...
Qf4 44. Rd1 Rxf3 $1) 0-1

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "2"]
[White "Hartoch, Robert"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2400"]
[BlackElo "2620"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1971.??.??"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bf4 b6 5. Nbd2 Ba6 $5 6. a4 ({Favourable is} 
6. e4 $1 Bxf1 7. Rxf1) 6... c5 7. a5 Nc6 8. axb6 axb6 9. e3 Bxf1 10. Nxf1 O-O
11. N1d2 cxd4 12. exd4 Nd5 13. Bg3 f5 14. O-O Rxa1 15. Qxa1 Qa8 16. c4 Ndb4 17.
d5 Nd4 18. Be5 $4 ({Better is} 18. Nxd4 Bxd4 19. Qb1 {(Keres).}) 18... Ne2+ $1
19. Kh1 Qxa1 20. Rxa1 Nd3 $1 21. g3 Nxe5 22. Nxe5 Bxe5 23. Re1 Bxb2 24. Rxe2
Bf6 25. Nb3 Rc8 26. Rc2 d6 27. Kg2 Kf7 28. Kf3 g5 29. Ke2 g4 30. Nc1 b5 31. Kd3
Rc5 0-1

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "3"]
[White "Adorjan, Andras"]
[Black "Browne, Walter"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2465"]
[BlackElo "2500"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1971.??.??"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. a3 Nc6 $5 5. Rb1 Nf6 6. b4 e6 7. bxc5 dxc5 8.
g3 b5 9. d3 Be7 10. Bg2 Bb7 11. O-O O-O {Black has a more natural position.}
12. Re1 Nd4 13. Nxd4 cxd4 14. Ne2 Qb6 15. Bb2 Bc5 16. h3 Rac8 17. Nc1 $6 {
White makes hesitant moves.} 17... Qa7 18. Nb3 Bb6 19. a4 $6 bxa4 20. Nd2 Bc5
21. Nc4 Bc6 22. e5 Nd5 23. Qh5 a3 24. Bxa3 Bxa3 25. Nxa3 Nc3 26. Rb2 Bb5 $6 (
26... Bxg2 27. Kxg2 Rb8 {keeps an edge.}) 27. Ra1 Qc5 28. h4 $6 (28. Nxb5 $1
axb5 29. f4 {equalises.}) 28... Rc7 29. Kh2 Re7 30. Qg5 h6 31. Qf4 f6 32. exf6
Rxf6 $1 33. Qd2 Ref7 34. f4 $2 (34. f3 $1 {retains the game closed.}) 34... e5
35. Nxb5 axb5 36. Ra8+ Kh7 37. Qe1 exf4 38. Be4+ g6 39. g4 f3 40. h5 Qe5+ {
Positional mistakes were made by White. He came back, but Black got the upper
hand at the end.} 0-1

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "5"]
[White "Timman, Jan"]
[Black "Keres, Paul"]
[Result "0-1"]
[ECO "E50"]
[WhiteElo "2445"]
[BlackElo "2615"]
[Annotator "JvR"]
[PlyCount "50"]
[EventDate "1971.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 b6 6. Be2 Bb7 7. O-O O-O 8. Na4
Qe7 9. a3 Ba5 10. dxc5 bxc5 11. Nxc5 Qxc5 12. b4 Qc7 13. bxa5 Ng4 $5 {
Keres wants to attack.} ({The solid} 13... d6 {
was played in Taimanov - Matanovic, Soviet Union 1965.}) 14. g3 Nc6 15. Bd2 ({
More energetic is} 15. Bb2 $1 Nxa5 16. Qd4 Nf6 17. Qh4) 15... Nxa5 $5 16. Ng5
$5 {Timman shows ambition.} 16... Nf6 17. Bb4 Rfc8 18. Bh5 $2 ({Right is} 18.
Rc1 $1 {(Keres).}) 18... Nxc4 $1 {Paul has found an elegant decision.} 19.
Bxf7+ Kh8 20. Qd4 $6 ({Preferable is} 20. Bh5 $1 h6 $1 21. Nf7+ Kg8 22. Bg6 Qc6
$1 23. e4 Nxe4 24. Qf3 Nf6 25. Qxc6 Bxc6 {but White has a bad game.}) 20... h6
$1 21. f4 (21. Qh4 Qe5 $1 {also wins for Black.}) 21... hxg5 $1 22. fxg5 Qc6 $1
23. Ra2 ({Or} 23. Qh4+ Nh7 24. e4 Qxe4 25. Qxe4 Bxe4 26. Rf4 Nxg5 {(Keres).})
23... Ne5 24. gxf6 Qh1+ 25. Kf2 Qg2+ {
The defeats against the top players made Timman desperate.} ({Black mates by} 
25... Qg2+ 26. Ke1 Rc1+ 27. Qd1 Nd3#) 0-1

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "6"]
[White "Evans, Larry"]
[Black "Donner, Jan Hein"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2550"]
[BlackElo "2500"]
[Annotator "JvR"]
[PlyCount "130"]
[EventDate "1971.??.??"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. g3 Bg7 5. Bg2 e5 6. Ngf3 Ne7 7. O-O O-O 8. c3
Nd7 9. Qc2 $5 h6 10. a4 a5 11. b3 b6 12. Ba3 Ba6 13. Rfe1 Re8 14. Rad1 c5 $6
15. exd5 $1 Nxd5 16. Nc4 Nxc3 $1 {Donner has to play a desperate move.} 17.
Qxc3 e4 18. d4 exf3 19. Rxe8+ $6 (19. Qxf3 $1 {keeps a plus.}) 19... Qxe8 20.
Qxf3 Rb8 21. Nd6 $6 Qe6 22. dxc5 Be2 $1 23. Qd5 Bxd1 24. Qxd1 Nxc5 25. Bd5 Qf6
26. Nxf7 Kh7 $1 27. Bxc5 bxc5 28. Qg4 Rb4 29. Qc8 Rd4 $6 ({Right is} 29... Qf5
$1) 30. Qe6 $2 {Black misses a wonderful escape.} (30. Ng5+ $1 hxg5 31. Bg8+
Kh6 32. Qh3+ Rh4 33. gxh4 {draws.}) 30... Qxe6 31. Bxe6 Rd1+ 32. Kg2 Rd2 33. h4
Bd4 34. Bc4 Bxf2 35. Kf3 Bd4 36. Nd6 Rf2+ 37. Ke4 Bc3 38. Kd5 Rf3 39. Ne4 Bb4
40. g4 Rh3 41. Nxc5 Rxh4 42. Nd3 Bd2 43. Ne5 Bc3 44. Be2 Kg7 45. Nc6 Rh2 46.
Bf3 Rf2 47. Ke4 Rb2 48. Bd1 Rd2 49. Bf3 Kf6 50. Na7 Rd4+ 51. Ke3 Rb4 52. Nb5
Be5 53. Bd1 Kg5 54. Na3 Rd4 55. Bf3 Rd8 56. Nc4 Bc3 57. Kf2 Kf4 58. Be2 Ke4 59.
Kg2 Bb4 60. Bf3+ Kd4 61. Bc6 g5 62. Bb5 Kc3 63. Kf3 Rd4 64. Ne3 Kxb3 65. Kg3
Bd6+ {Evans spoke: "Donner is very interesting but always wrong". That
statement was made on another occasion.} 0-1

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "6"]
[White "Hartoch, Robert"]
[Black "Keres, Paul"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2400"]
[BlackElo "2615"]
[Annotator "JvR"]
[PlyCount "107"]
[EventDate "1971.??.??"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. c4 Bb7 5. e3 g6 $5 ({He diverts from} 5... e6 {
(Karring - Keres, Tallinn 1942).}) 6. Nc3 b4 7. Ne2 Bg7 8. Ng3 e6 9. e4 exd5
10. exd5 O-O 11. Be2 d6 12. O-O Nbd7 13. Bf4 Nb6 14. Qd2 Re8 15. Bd3 Ba6 16.
Rac1 Rc8 17. b3 Rc7 18. h3 Qe7 19. Rfe1 Qf8 20. Rxe8 Nxe8 21. Ne2 Bc8 22. Nh2
Nd7 23. Be3 a5 24. g4 a4 25. f4 Ra7 26. Nf3 Qe7 27. Kg2 axb3 28. axb3 Ra3 29.
Bc2 Ra2 30. Bf2 Nb6 31. Re1 Qd8 32. Bh4 Qd7 33. Qd3 Nf6 34. Ng3 h5 $2 (34...
Ba6 $1 35. Bxf6 Bxf6 {equalises.}) 35. f5 $1 {Robbie going to play for mate!}
35... hxg4 36. hxg4 Nxg4 37. fxg6 $1 f6 $1 38. Kg1 Ne5 39. Nxe5 dxe5 $6 ({
Less disastrous is} 39... fxe5 40. Qf5 Qxf5 41. Bxf5 Bxf5 42. Nxf5 Nc8) 40. Qf5
$1 Qe8 (40... Qxf5 {(answers the threat Qh5!)} 41. Bxf5 Bxf5 42. Nxf5 {
brings a White win.}) 41. Qh5 $1 Bh3 ({The pointe is} 41... Rxc2 42. Qh7+ Kf8
43. Bxf6 $1 Bxf6 44. Rf1 {(Keres).}) 42. Bxf6 $1 Bxf6 43. Qxh3 Qe7 44. Bf5 Kf8
45. Rf1 Ke8 46. Ne4 Bg7 47. Qh7 Bf8 48. d6 Qg7 49. d7+ $1 Kd8 ({Or} 49... Nxd7
50. Bxd7+ {(Keres).}) 50. Qxg7 Bxg7 51. Nxc5 Nxd7 52. Rd1 Ra7 53. Rxd7+ Rxd7
54. Nxd7 {Hartoch triumphed sensationally.} 1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "9"]
[White "Timman, Jan"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2445"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "107"]
[EventDate "1971.??.??"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. Qg4 Ng6 8. h4
h5 9. Qd1 Ba6 10. Bxa6 Nxa6 11. Bg5 Qd7 12. Ne2 Qc6 13. O-O Ne7 $5 ({
Black diverts from} 13... Nb8 $6 {(Portisch - Ivkov, Zagreb 1965).}) 14. Qd3
Qc4 15. Qf3 Nf5 16. Ng3 g6 17. Bf6 Rh7 18. a4 Nb8 $2 (18... Nxg3 $1 19. Qxg3 c5
{forestalls the opening of the kingside and counters.}) 19. Nxf5 $1 gxf5 20.
Qg3 $1 Kf8 21. Rad1 Nc6 $6 {Hereafter, Timman gets a decisive attack.} ({
Better is} 21... Nd7 $1) 22. Qg5 Qe2 23. Rd3 Qg4 24. Qd2 f4 25. Rf3 Na5 26.
Rxf4 Nc4 27. Qc1 Qe2 28. Bg5 Ke8 29. Rf6 Na5 30. Re1 Qc4 31. Re3 Kd7 32. Ref3
Kc6 33. Qa3 Kb7 34. Rxf7 Rxf7 35. Rxf7 Nc6 36. Qd6 Rc8 37. Qxe6 a5 38. Qd7 Qxc3
39. Qxd5 Qxd4 40. Qxd4 Nxd4 41. Rd7 Nf5 42. e6 Kc6 43. Bd8 Ng7 44. Rxg7 Rxd8
45. f4 b5 46. axb5+ Kd6 47. f5 a4 48. e7 Ra8 49. f6 a3 50. Rg8 $4 ({Right is} 
50. Rg3 $1 a2 51. Rd3+ Ke6 52. e8=Q+ Rxe8 53. Ra3 Kxf6 54. Rxa2 {
and White wins slowly.}) 50... Rxg8 51. f7 a2 $4 (51... Rxg2+ $1 {
turns the tables.}) 52. fxg8=Q a1=Q+ 53. Kh2 Kxe7 54. Qg5+ {The 20-years-old
fighter won six, lost eight and drew one game. He would become a very strong
player.} 1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "11"]
[White "Portisch, Lajos"]
[Black "Bobotsov, Milko"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2630"]
[BlackElo "2485"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1971.??.??"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bf4 c5 6. dxc5 Na6 7. Bd6 Nxc5 $5 ({
Known is} 7... dxc4 {(Portisch - Ivkov, Prague 1970).}) 8. Bxe7 Qxe7 9. cxd5
exd5 10. e3 O-O 11. Be2 Nce4 12. Qd4 Nxc3 13. Qxc3 Bg4 14. O-O Rac8 15. Qb3 Rc7
16. Nd4 Bxe2 17. Nxe2 Qe5 18. Rad1 {
White has a plus, because he attacks an isolated pawn.} 18... Rd8 19. Rd4 Rcd7
$6 {Black chooses a passive defence.} ({Active is} 19... Rd6 $1 20. Rfd1 Rb6)
20. Rfd1 Ne4 21. Nf4 Nf6 22. h3 g6 23. Qa4 a6 24. Qb3 Kg7 25. a4 h5 26. Nd3 Qe7
27. a5 Kg8 28. Nf4 Qc5 29. Qd3 Kg7 $2 {Bobotsov has blundered a pawn.} 30.
Qxg6+ $1 fxg6 31. Ne6+ Kf7 32. Nxc5 Rc7 33. b4 Re8 34. h4 Re5 35. g3 Rf5 36.
Kg2 Re7 37. Nd3 Rc7 38. Nf4 Rc2 39. R1d2 Rxd2 40. Rxd2 g5 41. hxg5 {
Portisch came back from a poor start.} 1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "11"]
[White "Smyslov, Vassily"]
[Black "Adorjan, Andras"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2620"]
[BlackElo "2465"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1971.??.??"]

1. Nf3 c5 2. b3 Nf6 3. Bb2 g6 4. e4 $5 {Smyslov plays no standard move.} 4...
Bg7 5. e5 Nd5 6. Nc3 Nf4 $5 ({Solid is} 6... Nxc3 7. Bxc3 O-O {
(Miltner - Ostermeyer, Bad Neuenahr 1980).}) 7. d4 Nc6 8. g3 cxd4 9. Nxd4 Nxd4
10. Qxd4 Ne6 11. Qe3 d6 12. f4 dxe5 $5 13. Bb5+ $1 Kf8 14. fxe5 Qd4 15. Qxd4
Nxd4 16. O-O-O $1 Bxe5 17. Nd5 $1 {The crucial position has arisen.} 17... Nxb5
$2 ({Correct is} 17... Nf3 $1 18. Ba3 {(Smyslov)} 18... Kg7 $1 19. Bxe7 Be6)
18. Bxe5 f6 19. Nxf6 exf6 20. Rd8+ $1 Kg7 $6 ({Better is} 20... Kf7 $1 21. Rxh8
fxe5 22. Rf1+ {(Smyslov)} 22... Ke6 $1 23. Re8+ Kd7 $5 24. Rxe5 Nc7 {
and Black tries to create a new defence line.}) 21. Bxf6+ Kxf6 22. Rxh8 Kg7 23.
Rd8 Nc7 $2 24. Re1 $1 1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "11"]
[White "Uhlmann, Wolfgang"]
[Black "Donner, Jan Hein"]
[Result "1-0"]
[ECO "E74"]
[WhiteElo "2570"]
[BlackElo "2500"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1971.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 h6 7. Be3 c5 8. d5 e6
9. dxe6 Bxe6 10. Qd2 Kh7 11. h3 $5 ({Wolfgang played} 11. O-O-O {
in Uhlmann - Byrne, Hastings 1970.}) 11... Nc6 12. Nf3 Qe7 13. O-O Rfd8 (13...
Rad8 $1 {occurred in the next round (Donner - Gligoric).}) 14. Rad1 a6 15. Bf4
Ne8 $2 (15... Ne5 $1 {defends the centre.}) 16. a3 Rab8 17. Nd5 Bxd5 18. exd5
Ne5 19. b4 Nd7 20. Rfe1 Qf8 21. Rb1 Nef6 22. Bd3 Re8 23. Rxe8 Rxe8 24. Qc2 Ra8
25. Bf1 a5 26. bxa5 Rxa5 27. Rxb7 Rxa3 28. Rc7 Qe7 29. Qe2 Qxe2 30. Bxe2 Bf8
31. g4 Ra8 $2 {Donner remains passively.} (31... g5 $1 32. Bg3 Kg8 {
safeguards the kingside.}) 32. h4 $1 Rd8 33. g5 $1 Ne8 34. Rb7 h5 35. Nd2 Bg7
36. Ne4 Be5 37. Bxe5 Nxe5 38. f4 Nd7 39. Bd1 Kg7 40. Ba4 Nf8 41. Bxe8 Rxe8 42.
Nxd6 Re1+ 1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "13"]
[White "Keres, Paul"]
[Black "Adorjan, Andras"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2615"]
[BlackElo "2465"]
[Annotator "JvR"]
[PlyCount "127"]
[EventDate "1971.??.??"]

1. Nf3 g6 2. d4 c5 3. dxc5 $5 {Keres starts to attack on the third move!} 3...
Qa5+ 4. Qd2 Qxc5 5. b4 Qc6 6. Bb2 Nf6 7. Nd4 Qb6 8. c4 Bg7 9. c5 Qd8 10. g3 O-O
11. Bg2 a5 12. b5 d6 13. cxd6 exd6 14. O-O Nbd7 15. Na3 Nc5 16. Rad1 Re8 17.
Qc2 Bd7 18. Nc4 Nce4 19. f3 d5 20. fxe4 dxc4 21. Qxc4 Rc8 22. Qb3 Qb6 23. Kh1
Rc5 24. Qf3 a4 25. Qf4 Bc8 26. Rd3 Qc7 27. Rdf3 Qxf4 28. Rxf4 Ng4 29. Rxf7 Be5
30. R7f3 Rc4 31. Rd3 a3 32. Ba1 Rf8 33. Bf3 h5 34. Kg1 h4 35. Nb3 Bxa1 36. Rxa1
Ne5 37. Re3 Bg4 38. gxh4 Bxf3 39. exf3 Rxf3 40. Rxf3 Nxf3+ 41. Kf2 Ne5 42. Ke3
Rc2 43. Kd4 Nd7 44. e5 Kf7 45. Rc1 Rxa2 46. Rc7 $1 {
Keres missed the win in the first session and undertakes a new winning effort.}
46... Ke6 47. Rxb7 Rxh2 48. Nc5+ Nxc5 49. Rb6+ $1 Kf7 $2 ({Correct is} 49...
Kd7 $1 50. Kxc5 Re2 $1 {(Keres).}) 50. Kxc5 Rxh4 51. Rf6+ Kg7 ({Or} 51... Ke7
52. Ra6 $1 Rh3 {(Keres)} 53. b6 $1) 52. Ra6 Re4 53. Kd6 Rd4+ 54. Kc6 Rc4+ 55.
Kd5 Rb4 56. Kc5 Re4 57. Kd6 Rd4+ 58. Kc7 $1 Rc4+ 59. Kb8 $1 Kf7 60. b6 Rc6 61.
Kb7 $1 ({Not} 61. Ka7 $2 Ke6 $1 62. Rxa3 Kxe5 63. b7 Rc7 $11 {(Keres).}) 61...
Re6 62. Ka7 Rxe5 63. b7 Re7 64. Ka8 {Keres gets a win of rook versus pawns.}
1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "13"]
[White "Portisch, Lajos"]
[Black "Browne, Walter"]
[Result "1-0"]
[ECO "E56"]
[WhiteElo "2630"]
[BlackElo "2500"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1971.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4
Nc6 9. a3 Ba5 10. Na4 cxd4 11. exd4 h6 12. Qd3 $5 Bc7 13. Nc3 b6 14. Rd1 Bb7
15. b4 Rc8 16. Bb2 Bb8 17. Rac1 Qd6 18. Ba6 $1 Qd7 $2 ({Preferable is} 18...
Bxa6 19. Qxa6 Nd5 {(Portisch).}) 19. Bxb7 $1 Qxb7 20. d5 $1 exd5 21. Nxd5 Nxd5
22. Qxd5 Nd8 23. Rxc8 Qxc8 24. Ne5 Qc2 $2 25. Nd7 $1 {Lajos decides the game.}
25... Re8 26. Bxg7 $1 Kxg7 27. Qd4+ Be5 28. Nxe5 Ne6 29. Qa1 Kh7 30. h3 Nf4 31.
Re1 Rg8 32. Ng4 Nxh3+ 33. gxh3 h5 34. Qf6 hxg4 35. Qxf7+ Kh8 36. Qf6+ Rg7 37.
Qh6+ Qh7 38. Re8+ Rg8 39. Rxg8+ Kxg8 {Portisch was chasing Smyslov.} 1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "14"]
[White "Browne, Walter"]
[Black "Bobotsov, Milko"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2500"]
[BlackElo "2485"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1971.??.??"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nc6 6. g3 d6 7. Bg2 Bd7 8. O-O
Nf6 9. Re1 Be7 10. Nxc6 Bxc6 11. a4 O-O 12. Be3 Qc7 13. a5 Nd7 14. Na4 $5 Nc5 (
14... Rad8 {was played in Browne - Garcia Martinez, Siegen 1970.}) 15. Nb6 Rad8
16. Bd4 Rfe8 $2 {Bobotsov makes the wrong decision.} ({Better is} 16... f5 $1
17. exf5 Bxg2 18. Kxg2 Rxf5 {(Campora-Rodriguez Vargas, Lanzarote 2003).}) 17.
c4 e5 18. Be3 Qb8 19. Nd5 Bxd5 20. cxd5 b5 21. b4 Nd7 22. Rc1 Rc8 23. Re2 Rc4
24. Rxc4 bxc4 25. Qa4 Qb5 26. Qxb5 axb5 27. Ra2 Ra8 28. Bh3 Nf6 29. f3 Bd8 30.
a6 Kf8 31. a7 Ke7 32. Bc8 Rxc8 33. a8=Q Rxa8 34. Rxa8 Ne8 35. Rb8 Nc7 36. Kf1
Kd7 37. Bb6 g6 38. Bxc7 Bxc7 39. Rxb5 Kc8 40. Ke2 f5 41. Kd2 h5 1-0

[Event "IBM Amsterdam"]
[Site "11"]
[Date "1971.??.??"]
[Round "15"]
[White "Portisch, Lajos"]
[Black "Adorjan, Andras"]
[Result "0-1"]
[ECO "D97"]
[WhiteElo "2630"]
[BlackElo "2465"]
[Annotator "JvR"]
[PlyCount "118"]
[EventDate "1971.??.??"]

{Portisch is trailing Smyslov by half-a- point. Vasily plays a quick draw
against Uhlmann. So Lajos wants to win.   } 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3
Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 a6 8. Qb3 b5 9. e5 Nfd7 $5 10. e6 $1 ({
He will play} 10. Be3 {in Budapest 1971.}) 10... fxe6 11. Qxe6+ $5 (11. Be3 {
gives a plus, but Lajos wants to see blood.}) 11... Kh8 12. Qe4 ({The cutthroat
} 12. Ng5 {should be retorted by} 12... Ne5 $1 {
(Mironovich - Kosarev, St Petersburg 2005).}) 12... Nb6 13. Be2 Bf5 14. Qh4 Nc6
15. Bh6 e5 $5 16. Ng5 $1 Bxh6 17. Qxh6 Qe7 18. dxe5 Nd4 $5 19. Rd1 c5 20. Rd2
b4 21. Nd1 Nd5 22. Bc4 Nf4 $6 23. Nf7+ $6 {
Portisch misses his chance. Hereafter, he collapses under time pressure.} ({
The proper} 23. Ne3 Nxg2+ 24. Nxg2 Qxg5 25. Qxg5 Nf3+ 26. Ke2 Nxg5 27. f4 Ne6 {
(Adorjan)} 28. Ke3 Nd4 29. Rc1 {brings a plus.}) 23... Rxf7 24. Qxf4 Be6 25.
Qe4 Raf8 26. Ne3 Rf4 27. Qd3 Bxc4 28. Nxc4 Qg5 29. Qg3 Rg4 30. Qe3 Rxg2 31.
Qxg5 Rxg5 32. Kd1 Rg2 33. Re1 Kg7 34. Nd6 Nf3 35. e6 Nxe1 36. e7 Nf3 37.
exf8=Q+ Kxf8 38. Rd3 Rg1+ 39. Ke2 Nd4+ 40. Kd2 Rb1 41. Nc4 Rf1 42. Ke3 Ke7 43.
Nd2 Re1+ 44. Kf4 Re2 45. Kg3 Kd6 46. Kg2 Kd5 47. Kf1 Re7 48. b3 Kc6 49. Nc4 Re6
50. h3 Kb5 51. Rd2 h6 52. Ne3 Kc6 53. Nc4 Kb5 54. Nb2 a5 55. Na4 Re5 56. Rd3
Re4 57. Re3 Rxe3 58. fxe3 Nxb3 $1 59. axb3 c4 {Portisch fought hard did not
win for the fourth time. Smyslov triumphed by 10/15. Portisch Browne and Keres
followed at one point. Ivkov, Gligoric and Ree scored 81/2 points.} 0-1

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "1"]
[White "Polugaevsky, Lev"]
[Black "Malich, Burkhard"]
[Result "1-0"]
[ECO "A07"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1972.??.??"]

{AMSTERDAM 1972  The twelfth IBM tournament (30 v until 17 vi 1972) was
dominated by the Soviets Polugaevsky and Kortschnoj. Their wins have been
analysed.   } 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. b3 Bg4 5. Bb2 Nbd7 6. d3 e6 7.
Nbd2 Be7 8. O-O O-O 9. e4 a5 10. a3 Ne8 $5 11. h3 Bh5 12. Qe1 Nc7 13. Nd4 c5
14. Ne2 Bxe2 15. Qxe2 a4 16. f4 Nb6 17. d4 $5 axb3 18. cxb3 dxe4 19. Nxe4 cxd4
20. Rfd1 Nbd5 21. Rxd4 f5 22. Nf2 Bf6 23. Rd3 Qd6 24. b4 h6 $2 (24... Bxb2 25.
Qxb2 b5 {equalises.}) 25. Re1 Qb6 26. Kh2 Kh8 27. Nd1 Qa6 28. Bxf6 Nxf6 29. Qd2
Ncd5 30. Nc3 Nxc3 31. Qxc3 Rfd8 32. Red1 Rxd3 33. Rxd3 Ne4 34. Qc2 Qb6 35. Rd7
$2 Qe3 36. Bxe4 Rxa3 $4 ({Right is} 36... fxe4 37. a4 e5 $1 {(Stein).}) 37.
Rd8+ Kh7 38. Bxf5+ $1 {White delivers mate.} 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "2"]
[White "Polugaevsky, Lev"]
[Black "Robatsch, Karl"]
[Result "1-0"]
[ECO "A16"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1972.??.??"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 e5 7. O-O O-O 8.
Nxd5 Qxd5 9. d3 Nc6 10. Be3 Qb5 11. Qd2 $5 e4 $1 12. Ne1 Qxb2 $5 13. Qxb2 Bxb2
14. Rb1 Bg7 15. Bxe4 Nd4 $6 {The game could have stayed closed.} ({Okay is} 
15... Nd8 $1 16. Ng2 c6 17. Nf4 Re8) 16. Bxd4 Bxd4 17. Bxb7 Rb8 18. Nf3 Bxf2+
19. Kxf2 Bxb7 20. Ne5 Bd5 21. a4 Rbd8 22. Rfc1 Rfe8 23. Ng4 Rd6 $2 ({Better is
} 23... Re7 $1 24. Nf6+ Kg7 25. Nxd5 Rxd5 26. Rb7 Ra5) 24. e4 $1 Bxe4 $5 25.
dxe4 Rxe4 26. Kf3 Rxa4 27. Rxc7 h5 28. Ne5 Rf6+ 29. Ke3 Ra3+ 30. Kd4 Ra4+ 31.
Kd3 Ra3+ 32. Kc4 Ra4+ 33. Rb4 Rxb4+ 34. Kxb4 Rf5 35. Nd3 a5+ 36. Kc4 Rf1 37.
Kd4 a4 38. Ke3 a3 39. Ra7 Ra1 40. Nb4 Rb1 41. Nc2 g5 42. Nxa3 Rh1 43. Nc4 Rxh2
44. Nd6 Rg2 45. Kf3 Rh2 46. Nxf7 g4+ 47. Ke4 h4 {
Black succeeds to exchange all pawns.} 48. Nh6+ Kh8 49. Nxg4 Re2+ 50. Kf5 {
White has a decisive attack.} 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "5"]
[White "Kortschnoj, Viktor"]
[Black "Robatsch, Karl"]
[Result "1-0"]
[ECO "A41"]
[Annotator "JvR"]
[PlyCount "45"]
[EventDate "1972.??.??"]

1. c4 g6 2. e4 e5 3. Nf3 d6 4. d4 Nc6 5. d5 Nce7 6. Nc3 Bg4 7. c5 $5 {
Viktor plays a new move in a rosy line.} 7... Bh6 8. cxd6 cxd6 9. h3 Bxf3 10.
Qxf3 Bxc1 11. Rxc1 a6 12. Bd3 Kf8 13. b4 $5 ({Even better is} 13. O-O $1) 13...
Kg7 14. Qe3 Nf6 15. O-O Nd7 16. a4 Qb6 $5 17. Qxb6 Nxb6 18. a5 Nd7 19. Nb5 $1
axb5 20. Rc7 Nf6 ({Critical is} 20... Nxd5 $1 21. exd5 Nf6 22. Rxb7 Nxd5 23.
Rxb5 {(Kortschnoj)} 23... Nc3 24. Rb7 Rab8 25. Rxb8 Rxb8 26. a6 {
and White wins.}) 21. Rxe7 b6 22. axb6 Rhb8 23. Ra7 $1 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "6"]
[White "Polugaevsky, Lev"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "E05"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1972.??.??"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. d4 dxc4 7. Qc2 a6 8. a4
c5 9. dxc5 Bxc5 10. Nbd2 Nc6 11. Nxc4 Qe7 12. Nfe5 $5 (12. Bf4 {
arose in Bertok - Filip, Stockholm 1962. The game drew quickly.}) 12... Nd4 13.
Qd1 Rd8 14. e3 Nf5 15. Qb3 Qc7 $5 (15... Nd6 $1 {equalises.}) 16. Nd3 Rb8 17.
Bd2 b6 18. Nxc5 bxc5 19. Qa3 Qa7 $6 (19... Qe7 $1 {returns the queen.}) 20. Ba5
Re8 21. Qd3 Bb7 22. e4 $1 Qa8 $2 (22... Nd4 $1 23. Bc7 Bxe4 $1 {(Polugaevsky).}
24. Bxb8 Bxd3 25. Bxa7 Bxc4 26. Rfd1 Be2 27. Re1 Nc2 28. Bxc5 Nxa1 {counters.})
23. Rfe1 $6 (23. f3 $1 Nd4 24. Bc7 {wins an exchange.}) 23... Nd4 $6 ({
Better is} 23... Bc6 $1 {(Polugaevsky).}) 24. Bc7 $1 Bc6 25. Bxb8 Rxb8 26. Rac1
$1 Bxa4 27. e5 Nd5 28. Nd6 Qa7 29. Qc4 Qd7 30. Qxc5 Nb3 31. Qc8+ $1 Qd8 32.
Qxb8 Qxb8 33. Rc8+ Qxc8 34. Nxc8 Kf8 35. Rd1 Bc6 36. Nb6 Nxb6 37. Bxc6 Na5 $2
38. Rd8+ {Polu started a new series of wins.} 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "7"]
[White "Ree, Hans"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "A34"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1972.??.??"]

1. c4 Nf6 2. Nf3 c5 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. d3 e5 8. Nd2
Bd7 9. O-O Be7 10. Nc4 f6 11. f4 b5 12. Bxc6 $5 Bxc6 13. Na5 Bd7 14. fxe5 Ne6
$1 15. Nb7 ({Options are} 15. Nb3 {(Pfleger - Seppeur, Germany 1984) and}) (15.
exf6 {(Skembris - Smejkal, Moscow 1994).}) 15... Qb6 16. Nd6+ Bxd6 17. exd6
Qxd6 18. Ne4 Qe7 19. a4 $6 ({Stein prefers} 19. Be3 $1) 19... bxa4 20. b3 $2 ({
Stein mentions} 20. Be3 $1 {again.}) 20... O-O 21. bxa4 f5 22. Nc3 Bc6 23. e3
$2 {Ree weakens pawn d3.} ({Better is} 23. Qb3 Kh8 24. Qc4) 23... Rad8 24. Qe2
Qd7 $1 25. Bb2 ({Or} 25. Rd1 Ng5 $1) 25... Qxd3 26. Rfd1 Qxe2 27. Nxe2 Ng5 28.
Nf4 Rfe8 29. h3 Kf7 30. Nd3 Rd5 31. h4 Nf3+ 32. Kf2 Red8 0-1

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "8"]
[White "Kortschnoj, Viktor"]
[Black "Padevsky, Nikolay"]
[Result "1-0"]
[ECO "A17"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1972.??.??"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. g3 O-O 5. Bg2 Re8 $5 {
Padevsky applies a time consuming plan.} 6. O-O e5 7. d3 Bxc3 8. bxc3 d6 9. Nd2
$5 Nbd7 10. Re1 Nc5 11. d4 Ne6 12. Nf1 $5 {Kortschnoj takes his time too.}
12... e4 13. Qc2 h6 14. Bxe4 Nxd4 $1 15. cxd4 Nxe4 16. f3 Ng5 17. Qc3 Qf6 18.
Bb2 c5 19. d5 Qxc3 20. Bxc3 f5 21. Kf2 b6 22. a4 Bd7 23. h4 Nf7 24. h5 Ne5 $6 (
{Timman prefers} 24... Re7 $1) 25. Ne3 $1 Re7 $6 ({Better is} 25... Rab8 26. a5
b5 $1) 26. a5 $1 Rb8 $2 (26... Rae8 27. axb6 axb6 28. Ra7 Nf7 {
grabs the last chance.}) 27. axb6 axb6 28. Ra7 $1 Kf8 29. Rb1 g5 30. hxg6 Nxg6
31. Rh1 f4 32. gxf4 Nxf4 33. Bf6 Rh7 34. Bg5 Ng6 35. Ng4 Rf7 36. Nxh6 Rh7 37.
Rha1 Ne5 38. Ra8 Rxa8 39. Rxa8+ Kg7 $4 (39... Be8 40. Nf5 $1 Nxc4 41. e4 b5 42.
Bf4 Rd7 43. Ra6 {brings a white advantage.}) 40. Rg8# 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "8"]
[White "Polugaevsky, Lev"]
[Black "Uhlmann, Wolfgang"]
[Result "1-0"]
[ECO "E69"]
[Annotator "JvR"]
[PlyCount "61"]
[EventDate "1972.??.??"]

1. c4 Nf6 2. Nc3 e5 3. g3 g6 4. Nf3 d6 5. d4 Nbd7 6. Bg2 Bg7 7. O-O O-O 8. e4
c6 9. h3 Qa5 10. Re1 exd4 11. Nxd4 Re8 12. Be3 Nb6 $6 ({Preferable is} 12...
Ne5 {(Zilber - Tal, Latvia 1958).}) 13. c5 $3 {White plays a wonderful move.}
13... Nc4 $1 ({Not} 13... Qxc5 14. Ndb5 $1 {(Polu).}) 14. Nb3 Qd8 15. cxd6 Nxd6
$6 {Slightly better is to offer the exchange of queens. Hereafter, Black
suffers due to restraint.} 16. Bd4 Nc4 17. Qe2 Be6 18. Rad1 Qe7 19. f4 Nb6 20.
Nc5 Rad8 21. Nxe6 Qxe6 22. Qf2 $1 Nh5 $2 (22... Nfd7 23. e5 $1 {(Polugaevsky)}
23... Bf8 {defends properly.}) 23. e5 Bf8 $5 (23... Bh6 {does not work either.}
) 24. g4 Ng7 25. Ne4 Be7 26. Nf6+ Bxf6 27. exf6 Rxd4 28. Qxd4 Qxe1+ 29. Rxe1
Rxe1+ 30. Kf2 Ne6 31. Qd2 {Polugaevsky showed a choking restriction} 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "9"]
[White "Hartoch, Robert"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "A36"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1972.??.??"]

1. g3 c5 2. Bg2 g6 3. e4 Bg7 4. Ne2 Nc6 5. O-O d6 6. d3 e5 7. c4 Nge7 8. Nbc3
Rb8 $5 9. f4 O-O 10. Be3 exf4 11. gxf4 ({Preferable is} 11. Nxf4 $1) 11... f5
12. Qd2 Nd4 13. Rae1 Nec6 14. Nd5 b5 15. cxb5 Rxb5 16. Nec3 $2 ({More active is
} 16. Nxd4 Nxd4 17. e5 $1 dxe5 18. fxe5) 16... Rb8 17. Kh1 Ba6 18. Bxd4 Nxd4
19. Ne3 Kh8 20. exf5 Nxf5 21. Nxf5 Rxf5 22. Be4 Rf8 23. Qg2 $2 (23. f5 $1 gxf5
{(Polugaevsky)} 24. Rxf5 Rxf5 25. Bxf5 {makes useful exchanges.}) 23... Qh4 $1
24. Re3 Rxf4 25. Rg1 Rf2 26. Qh3 Qxh3 27. Rxh3 Bc8 $1 28. Nd1 Rf4 29. Rhg3 Bxb2
30. Ne3 Bd4 31. Nd5 Bxg1 32. Nxf4 Bd4 33. Rf3 Rb1+ 0-1

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "10"]
[White "Kortschnoj, Viktor"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "A29"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1972.??.??"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 e4 6. Nh4 Bc5 7. Bg2 d6 8. d3
exd3 9. Qxd3 Ne5 10. Qc3 $5 c6 11. Ne3 Qb6 12. O-O O-O 13. Nc2 a5 14. Be3 Re8
15. Rad1 Neg4 16. Bxc5 Qxc5 17. h3 Ne5 18. Ne3 Be6 19. Nhf5 Bxf5 20. Nxf5 Rad8
21. Rd4 Nxc4 $4 22. Nxg7 $1 {A desperado knight ruins the kingside.} 22... Kxg7
23. Rg4+ $1 Kf8 24. Qxf6 $1 Ne5 25. Rh4 Kg8 26. Be4 Ng6 27. Rxh7 $1 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "10"]
[White "Polugaevsky, Lev"]
[Black "Langeweg, Kick"]
[Result "1-0"]
[ECO "A07"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1972.??.??"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. b3 Bf5 5. Bb2 h6 6. d3 e6 7. O-O Be7 8. Nbd2
O-O 9. Qe1 Bh7 10. e4 a5 11. a3 Na6 12. Qe2 Nc5 13. e5 Nfd7 14. Nd4 Qb6 15. a4
$5 Na6 16. Bh3 Nc7 17. Kh1 Qa6 18. f4 c5 19. N4f3 b5 20. axb5 Qxb5 21. Nb1 Qc6
22. Nc3 Ra7 23. Bg2 Nb6 24. Na4 Nca8 25. Bc3 Qb5 26. Rfb1 Nxa4 27. Rxa4 Nb6 28.
Raa1 Rfa8 29. Qe1 Nd7 30. Bd2 Qb6 31. g4 Nb8 32. Qg3 Nc6 33. f5 Nb4 34. Ne1 Qd8
35. Qf2 Rc7 36. c4 Bh4 37. Qe2 Bxe1 $6 {Time pressure will have ruled.} 38.
Bxe1 dxc4 $2 39. Bxa8 Qxa8+ 40. Qg2 $2 Qa7 $2 (40... Qxg2+ 41. Kxg2 Nxd3 42.
bxc4 Rc8 {nearly equalises.}) 41. dxc4 exf5 42. Rd1 Bg6 43. Rd8+ Kh7 44. g5 h5
45. Ra8 Qb7 46. Qxb7 Rxb7 47. R1xa5 $2 f4 $2 (47... Nd3 {grabs the chance.})
48. R8a7 Rb8 49. Bxb4 cxb4 50. Kg1 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "11"]
[White "Ljubojevic, Ljubomir"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "B87"]
[Annotator "JvR"]
[PlyCount "126"]
[EventDate "1972.??.??"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Bc4 e6 7. Bb3 b5 8. Be3
Be7 9. Qe2 O-O 10. O-O-O b4 $1 11. Na4 Qa5 12. Nf3 $6 ({Ljubojevic brings
about a doubtful line. He should counter. The right novelty would be} 12. Nb6
$1 Qxb6 13. Nxe6 $1) 12... Nbd7 13. Nd2 Bb7 14. f3 Bc6 15. Nc4 Qc7 16. Nab6 $5
Rab8 17. Nxd7 Bxd7 18. Qf2 $2 {White misses another counteraction.} ({Better is
} 18. e5 $1 dxe5 19. Bf2) 18... Bb5 $1 19. Nb6 Qc6 20. Kb1 Bd8 21. Qg3 Bxb6 22.
Rxd6 Bc7 23. Rxc6 Bxg3 24. Rxe6 $5 fxe6 25. Bxe6+ Kh8 26. hxg3 Rfe8 27. Bb3 a5
28. g4 Nxe4 $5 29. fxe4 Rxe4 30. Ba7 Rbe8 31. a4 bxa3 32. bxa3 Re1+ 33. Rxe1
Rxe1+ 34. Kb2 Bc6 35. g3 Re4 36. g5 Rg4 37. Bb8 Rxg5 38. Kc3 a4 39. Be6 Be4 40.
Bf4 Rg6 41. Bd7 Ra6 42. Bb5 Ra8 43. Kb2 g5 $1 44. Be5+ Kg8 45. c4 Kf7 46. Kc3
Ke6 47. Kd4 Bf3 48. c5 h5 49. Bc4+ Kd7 50. Bb5+ Bc6 51. Be2 h4 52. Bg4+ Ke7 53.
gxh4 gxh4 54. Ke3 Rd8 55. Bf5 Rd1 56. Kf4 Rg1 57. Bd6+ Kf7 58. Bg4 Rg3 59. Kg5
Rxa3 60. Kxh4 Re3 61. Bf4 Re4 62. Kg5 a3 63. Bf3 Rxf4 $1 0-1

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "12"]
[White "Kortschnoj, Viktor"]
[Black "Hartoch, Robert"]
[Result "1-0"]
[ECO "A60"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1972.??.??"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. g3 e6 5. dxe6 fxe6 6. Nc3 Bg7 $5 ({
The thematic move} 6... d5 $1 {occurred in Antoshin - Koblencs, Tbilisi 1956.})
7. Bg2 O-O 8. Bf4 Ne8 9. Qd2 Nc6 10. h4 Ne5 $5 11. Bxe5 $1 Bxe5 12. Nf3 Bxc3
13. Qxc3 Qf6 14. Qd2 Rb8 15. a4 a6 16. O-O b5 $5 17. cxb5 axb5 18. a5 d5 19. b4
c4 $6 20. e4 $1 Nc7 21. e5 $1 Qe7 22. Nd4 Bd7 23. f4 Na6 24. Rab1 c3 $2 {
Black should have accepted the restraint and continued the suffering.} 25. Qxc3
Rfc8 26. Qd2 Rc4 27. Nc2 Rbc8 28. Rb2 Be8 29. Kh2 h5 30. Rf2 d4 31. Bf1 d3 32.
Qxd3 Qa7 33. Rd2 Qf7 34. Qe3 Rc3 35. Qf2 Bc6 36. Nd4 Bd5 37. Bg2 Bc4 38. Rbc2
Ra3 39. Bh3 Re8 40. Nc6 Bd5 41. Rxd5 exd5 42. Qb6 g5 43. hxg5 h4 44. Qxa6 hxg3+
45. Kg2 Qxf4 46. Ne7+ $1 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "12"]
[White "Polugaevsky, Lev"]
[Black "Enklaar, Bert"]
[Result "1-0"]
[ECO "D56"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1972.??.??"]

1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Nf3 Nf6 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7
Qxe7 9. Rc1 c6 10. Bd3 Nxc3 11. Rxc3 dxc4 12. Bxc4 Nd7 13. O-O b6 14. Bd3 c5
15. Bb5 cxd4 $6 ({Preferable is} 15... Rd8 $1 {
(Polugaevsky - Krogius, Leningrad 1971).}) 16. Qxd4 $1 Nf6 17. Rfc1 {
White rushes to the open files.} 17... Nd5 18. Rc4 Rd8 19. Qe5 Bd7 $1 20. Bxd7
$1 Qxd7 21. Nd4 {The critical position has arisen.} 21... Rdc8 $2 ({
Polugaevsky gives} 21... Rac8 $1 22. Nc6 $2 {but} 22... Rxc6 $1 23. Rxc6 Nb4 $1
{Black has two threats.} 24. Qd4 Nxc6 25. Rxc6 Qe7 26. Qg4 Qb4 $1 27. h3 Qe1+ {
wins for Black.}) 22. Nc6 $1 {Now, the mentioned combination fails.} 22... Kf8
23. h3 Nf6 24. b4 a6 25. a4 Ne8 $6 ({Better is} 25... Qd5) 26. Qe4 Nf6 27. Ne5
$1 Qe8 28. Qd4 Rxc4 29. Rxc4 Qb8 ({Or} 29... Qxa4 30. Rc7) 30. Rc6 b5 31. Rb6
Qd8 32. Qxd8+ Rxd8 33. axb5 axb5 34. Rxb5 Ne4 35. Rb7 Rd1+ 36. Kh2 Nd6 37. Rc7
Ke8 38. Ra7 Rd2 39. f3 Rb2 40. e4 h5 41. Ra6 Nb7 42. Ra8+ Nd8 43. Nc6 Rd2 44.
Kg3 {Polu had won seven games in a row!} 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "13"]
[White "Langeweg, Kick"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "A34"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1972.??.??"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. a3 g6 $5 8.
d3 Bg7 9. O-O O-O 10. Qa4 Nd4 11. Nxd4 cxd4 12. Ne4 Bd7 13. Qb3 b6 14. Ng5 Rc8
15. Bd2 h6 16. Nf3 Ne6 17. a4 Nc5 18. Qd1 Qe8 19. b3 Be6 20. Ra3 Na6 21. b4 $1
Qd7 22. Re1 $5 ({More useful is} 22. Qb1 $1) 22... Nc7 23. Qa1 Nd5 {
Kortschnoj is waiting for mistakes.} 24. Nxd4 $2 ({
White should accept the problems of} 24. Qb2 Nc3 25. b5) 24... Nxb4 25. Bxb4
Bxd4 26. Bc3 Bxc3 27. Rxc3 Rxc3 28. Qxc3 Qxa4 29. Ra1 Qd7 30. Ra6 Rc8 31. Qa3
$2 Rc2 $1 0-1

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "14"]
[White "Kortschnoj, Viktor"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]
[ECO "E43"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1972.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 b6 6. Nf3 Bb7 7. O-O O-O 8. Na4
cxd4 9. exd4 Bxf3 10. Qxf3 Nc6 11. Be3 d5 12. Rfd1 dxc4 $5 ({Known is} 12...
Rc8 {(Gligoric - Bobotsov, Kapfenberg 1970).}) 13. Bxc4 Rc8 14. a3 Bd6 15. Nc3
Bb8 $2 ({Correct is} 15... Ne7 $1 16. Ba6 Rc7 {(Kortschnoj)} 17. Nb5 Rd7) 16.
Ba6 $1 {White wins an exchange.} 16... Qd6 ({Or} 16... Rc7 17. Nb5 $1 {
(Kortschnoj).}) 17. Bxc8 Qxh2+ 18. Kf1 Rxc8 19. Rac1 Qd6 20. d5 Ne5 21. Ne4
Rxc1 22. Nxd6 Nxf3 23. Rxc1 Bxd6 24. Rc8+ Bf8 25. dxe6 fxe6 26. gxf3 Nd5 27.
Ra8 {Kortschnoj scored easily.} 1-0

[Event "IBM Amsterdam"]
[Site "12"]
[Date "1972.??.??"]
[Round "15"]
[White "Enklaar, Bert"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "D91"]
[Annotator "JvR"]
[PlyCount "92"]
[EventDate "1972.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. Bh4 c6 7. e3 Qa5 8. Qb3
dxc4 9. Bxc4 Nd6 10. O-O Nxc4 11. Qxc4 Be6 12. Qd3 Na6 13. a3 Rd8 14. b4 Qh5
15. Ne2 Bf5 16. Qb3 Bg4 17. Nf4 Qf5 18. Qd3 $4 {
Kortschnoj will win the four last games.} 18... Qxd3 $1 19. Nxd3 Bxf3 20. gxf3
Bxd4 $1 21. Rad1 Bf6 22. Bxf6 exf6 23. f4 Ke7 24. Kg2 Rd5 25. Kf3 Rhd8 26. Ke2
Nc7 27. Nb2 Nb5 28. Rxd5 Rxd5 29. Nc4 b6 30. Ra1 Rh5 31. Rh1 c5 32. h3 Nd6 33.
Nd2 c4 34. Nf3 Rd5 35. h4 Nb5 36. Ra1 Nc3+ 37. Ke1 Rd3 38. Nd4 Kd6 39. a4 a6
40. Nf3 Nd5 41. Nd2 b5 42. axb5 axb5 43. Ne4+ Kc7 44. Nc5 Nxb4 45. Nxd3 Nc2+
46. Kd2 Nxa1 {Polugaevsky (12) won before Kortschnoj (11/15). The Dutchmen
Langeweg, Ree, Donner and Timman scored well.} 0-1

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "1"]
[White "Petrosian, Tigran V"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2640"]
[BlackElo "2565"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1973.??.??"]

{AMSTERDAM 1973  The Soviet players were the former world champions Petrosian
and Spassky. But the public interest went to an outsider, Albin Planinc, from
17 vii until 4 viii 1973.   } 1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2
Nc7 6. d3 e5 7. Nf3 Nc6 8. Nd2 Be6 9. Bxc6+ bxc6 10. b3 $5 Nb5 11. Na4 Qd5 12.
f3 Be7 13. Bb2 h5 $6 14. Rc1 h4 $6 15. g4 Bxg4 $2 {This sacrifice loses.} 16.
e4 $1 Qxd3 17. fxg4 Bg5 18. Nxc5 $1 Qh3 19. Qe2 Rd8 20. Rc2 Bf4 21. Nf1 $1 Rh6
({Or} 21... Bg3+ 22. Nxg3 hxg3 23. Qf3 {(Petrosian).}) 22. Qg2 Qxg2 23. Rxg2
Rhd6 24. Rc2 Rd1+ 25. Ke2 Rb1 26. a4 Nc7 27. Ng3 Rxb2 28. Rxb2 hxg3 29. hxg3
Bxg3 30. Rh8+ Ke7 31. Rxd8 Kxd8 32. Rd2+ Ke8 33. Rd6 1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "2"]
[White "Spassky, Boris"]
[Black "Kavalek, Lubomir"]
[Result "1-0"]
[ECO "A69"]
[WhiteElo "2655"]
[BlackElo "2565"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1973.??.??"]

{Spassky had lost the world championship during the previous year. Boris
reentered the arena in 1973 and had a mixed result in Amsterdam. Later he
would score his best tournament result ever by winning the Soviet championship.
  } 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Nf3 O-O 7. Be2 e6 8. O-O
Re8 9. Nd2 Na6 10. Rb1 $5 Nc7 11. a4 b6 12. f4 exd5 13. cxd5 {
The opening has become a Ben-Oni.} 13... Ba6 14. Bxa6 Nxa6 15. Qf3 Qe7 16. b3
Nb4 17. Bb2 Rad8 18. h3 Nc2 19. Qd3 Nb4 20. Qf3 Nc2 21. Rbc1 $5 {
White avoids a repetition of moves.} 21... Nd4 22. Qd3 Nd7 23. Rce1 f5 $2 {
Black should not have done anything.} 24. exf5 $1 Qxe1 25. Rxe1 Rxe1+ 26. Kf2 {
Black has a tactical opportunity.} 26... Rh1 $6 (26... c4 $1 27. Qxc4 Rde8 28.
fxg6 hxg6 29. Nf3 Nxf3 30. gxf3 Rh1 $1 {offers more resistance.}) 27. fxg6 Rf8
$5 ({Little use has} 27... hxg6 28. Qxg6) 28. gxh7+ Kh8 29. Ne2 Ne5 30. Qe4 Rd1
(30... Bh6 $5 31. Bxd4 cxd4 32. g3 Rxh3 33. Kg2 Ng4 {(Petrosian) is answered by
} 34. Nf3 Bg7 35. Qg6) 31. Bc3 Nd7 32. Bxd4 cxd4 33. Qc2 Rxd2 34. Qxd2 Nc5 35.
Kf3 d3 36. Nc3 a5 37. Ne4 Nxb3 38. Qxd3 Nd4+ 39. Kg4 Nf5 40. Ng5 1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "3"]
[White "Timman, Jan"]
[Black "Donner, Jan Hein"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2470"]
[BlackElo "2480"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1973.??.??"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nge2 Bg7 5. g3 O-O 6. Bg2 e5 7. O-O c6 8. a4 a5
9. b3 Na6 10. Ba3 $5 Re8 11. Qd2 Nb4 12. Rae1 Qb6 13. Bb2 Be6 14. Nd1 Rad8 15.
Ne3 Ng4 16. h3 $5 {Timman brings live to the game at his own costs.} 16... Nxe3
17. fxe3 d5 $1 18. exd5 $2 (18. c3 $1 Na6 19. exd5 Bxd5 20. Bxd5 cxd5 21. Qc2 {
holds the centre.}) 18... Bxd5 19. Bxd5 Nxd5 20. Nc3 $5 exd4 21. Nxd5 Rxd5 22.
exd4 Rxe1 23. Rxe1 Bxd4+ 24. Bxd4 Qxd4+ 25. Qxd4 Rxd4 26. Re7 $1 {
Timman counters in the rook ending.} 26... Rb4 $5 27. Kf2 Kg7 28. Re5 b6 $1 29.
Re3 $6 Rd4 30. Kf3 Kf6 31. Ke2 $2 (31. Re8 $1 {
brings the white rook behind the black pawns.}) 31... Rd5 32. Rc3 Rc5 $1 33.
Rf3+ ({The pointe is} 33. Rxc5 bxc5 34. Kd3 Ke5 35. Kc4 Kd6 $1 {and Black wins.
}) 33... Ke6 34. c3 f5 35. h4 Re5+ 36. Kd2 Re4 37. Kd3 Rg4 38. Re3+ Kd6 39. Ke2
Re4 {Donner won the Amsterdam derby.} 0-1

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "4"]
[White "Marovic, Drazen"]
[Black "Planinc, Albin"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "2480"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1973.??.??"]

{An enigmatic person was Albin Planinc, spelled Planinec later. He played for
five hours fully concentrated. When the game was over, he skipped the
postmortem and went to his room immediately.   } 1. c4 Nf6 2. d4 c5 3. d5 e6 4.
Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Na6 10. h3 Bd7 11. e4
$5 ({Marovic played} 11. Bf4 {in their previous game (Zagreb 1972).}) 11... Qc8
12. Kh2 Re8 13. Re1 c4 $1 14. e5 dxe5 15. Nxe5 Bf5 16. Bg5 Nb4 $1 {Planinc carr
ies out a simple but effective plan in his favourite Ben-Oni. He will utilise
square d3.} 17. Rc1 $2 (17. Re2 $1 h6 18. Bxf6 Bxf6 19. Ng4 Bxg4 20. Rxe8+ Qxe8
21. Qxg4 {defends well.}) 17... Nd7 $1 18. Nxd7 Qxd7 19. Rxe8+ Rxe8 20. Qd2 Nd3
21. Rd1 b5 22. g4 b4 23. Ne2 $2 (23. gxf5 bxc3 24. bxc3 Qxf5 25. Be3 {
avoids a disaster.}) 23... Be4 24. Bxe4 Rxe4 25. f3 Re8 26. b3 Qxd5 27. bxc4
Qxf3 28. Ng1 Be5+ 0-1

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "5"]
[White "Petrosian, Tigran V"]
[Black "Smejkal, Jan"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2640"]
[BlackElo "2595"]
[Annotator "JvR"]
[PlyCount "133"]
[EventDate "1973.??.??"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 g6 6. Nc2 d6 7. g3 Bg7 8. Bg2
O-O 9. O-O Be6 10. b3 Qd7 11. Nd5 $5 Bf5 12. Bb2 Nxd5 13. Bxg7 Kxg7 14. Bxd5
Bh3 15. Re1 h5 $5 {The attack on the kingside takes a number of moves.} 16. Ne3
h4 17. Rc1 hxg3 18. hxg3 Rh8 19. c5 $1 {
A counteraction in the central area gives the right answer.} 19... Be6 $5 20.
Bg2 Rh5 $5 {Black revives the attack.} 21. cxd6 exd6 22. Qd2 Rah8 $2 {
Smejkal overlooks the needed harmony of attack and defence.} ({Better is} 22...
f6 $1 23. Red1 Rd8) 23. Red1 d5 $5 ({Not} 23... Rd8 $2 24. Bxc6 $1 bxc6 25.
Qc3+ f6 26. Qxc6 {(Gagarin).}) 24. Nxd5 Bxd5 25. Bxd5 Qh3 $5 {
He has given a pawn and attacks all-out.} 26. Bxc6 bxc6 27. Qc3+ Kh7 28. Qxc6
Qh2+ $5 29. Kf1 Rc8 30. Qg2 Rxc1 31. Rxc1 Qh1+ 32. Qg1 Qd5 33. f3 Qd2 $1 34.
Re1 Qxa2 35. Qe3 Rh1+ 36. Kf2 Rxe1 37. Kxe1 a5 38. Kf2 a4 39. bxa4 Qxa4 40. Qe5
Qc4 {The queen ending gives drawing chances.} 41. g4 Kg8 42. f4 Qb4 43. Qe8+
Kg7 44. Qe3 Kf8 45. Kg3 Qe1+ 46. Kg2 Qb4 47. Kh3 Qe1 48. Kg2 Qb4 49. Qe5 g5 $4
{Black blunders a pawn.} 50. Qxg5 Qe4+ 51. Kf2 Qd4+ 52. Kf3 Qc3+ 53. e3 $1 Qc6+
54. Kg3 Qh1 55. Qd8+ Kg7 56. Qd4+ Kh7 57. Qd3+ Kg7 58. Qd4+ f6 $5 59. g5 $1
Qg1+ 60. Kf3 Qf1+ 61. Ke4 Qb1+ 62. Kd5 Qb5+ 63. Kd6 Qa6+ 64. Kc5 Qa3+ 65. Kc4
Kg8 $6 66. Qd8+ Kh7 67. Qd3+ 1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "6"]
[White "Radulov, Ivan"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "2530"]
[BlackElo "2655"]
[Annotator "JvR"]
[PlyCount "150"]
[EventDate "1973.??.??"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5 6. dxc5 Qa5 7. Qd3 Qxc5 8. Be3
Qa5 9. Qb5+ $5 Qxb5 10. Bxb5+ Nc6 11. O-O-O a6 12. Bd3 Ng4 13. Bb6 O-O 14. h3
Nf6 15. g4 Nd7 16. Be3 Rb8 17. Ne2 b5 18. Kb1 Bb7 19. Ned4 $6 {
Radulov wants to draw quickly but he is losing too much time.} 19... Nc5 20.
Nb3 Na4 21. Bc1 Rfc8 22. c3 $2 Rc7 $2 ({Spassky misses the win} 22... Bxc3 $1
23. bxc3 Nxc3+ 24. Ka1 Nb4 $1) 23. Nfd4 Rbc8 24. Nxc6 Bxc6 25. a3 $2 f5 $5 26.
gxf5 gxf5 27. Rhe1 fxe4 28. Bc2 d5 $2 {
Black plays a simple positional move on his way to victory.} ({
But Boris misses the immediate win} 28... Bxc3 $1 29. bxc3 Nxc3+ {
Now he has to play dozens of moves.}) 29. Nd4 Bxd4 30. Rxd4 Nb6 31. Rg1+ Kf7
32. Bd1 Rg8 33. Bh5+ Kf8 34. Rdd1 Rxg1 35. Rxg1 Be8 36. Bg4 Bf7 37. f5 Nc4 38.
h4 Rc6 39. Bf4 e3 40. b3 Nd2+ 41. Kb2 d4 42. cxd4 Bxb3 43. Rc1 Rxc1 44. Kxc1
Bd5 45. Bxe3 Nc4 46. Bh6+ Ke8 47. a4 bxa4 48. Be2 Nd6 49. Bg5 Nxf5 50. Bxa6
Nxd4 51. Bd3 h5 52. Be3 Nf3 53. Bb5+ Kf7 54. Bxa4 Nxh4 55. Bd1 Kg6 56. Bc2+ Kf6
57. Kd2 Ng2 58. Bg1 Bf3 59. Bd3 e5 60. Bf1 Nh4 61. Bb6 Kf5 62. Bd8 Kg4 63. Bb5
Ng2 64. Bd7+ Kg3 65. Bc7 Kf4 66. Bb5 Nh4 67. Ke1 Bg4 68. Bf1 Nf5 69. Kf2 h4 70.
Bd3 Ng3 71. Bd8 h3 72. Bh4 Nh5 73. Bg6 e4 74. Bd8 e3+ 75. Ke1 Kg3 0-1

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "7"]
[White "Szabo, Laszlo"]
[Black "Donner, Jan Hein"]
[Result "1-0"]
[ECO "D42"]
[WhiteElo "2565"]
[BlackElo "2480"]
[Annotator "JvR"]
[PlyCount "128"]
[EventDate "1973.??.??"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 d5 4. cxd5 Nxd5 5. e3 e6 6. d4 Nc6 7. Bd3 Be7 8. O-O
O-O 9. Qe2 b6 10. Rd1 Bb7 11. dxc5 Bxc5 12. Nxd5 exd5 13. Bd2 Qe7 14. Bc3 Rfe8
15. Ba6 Rad8 16. Bxb7 Qxb7 17. Qc2 f6 18. Qb3 Qf7 19. Rd3 Rd7 20. Rad1 Red8 21.
Qa4 Qe6 22. b4 Bd6 23. Qb3 Ne7 24. Nd4 Qf7 25. Qa4 Be5 26. Nf3 Bxc3 27. Rxc3
Qe6 28. Nd4 Qe5 29. Rdc1 h5 30. h3 Rb7 31. b5 Rbd7 32. Qd1 g6 33. R1c2 Re8 34.
Qd3 Kf7 35. Rc1 Red8 36. Qc2 Re8 37. Qb3 Red8 38. a4 Re8 39. Qa2 Rb8 40. R3c2
Kg7 41. Qa3 Kf7 42. a5 bxa5 43. Nc6 Nxc6 44. bxc6 Rc7 45. Qxa5 Rb6 46. Rc5 Qb2
47. Rd1 Qb4 48. Qxb4 Rxb4 49. Rcxd5 Rxc6 50. Rd7+ Ke6 51. Rxa7 {
Donner has lost a pawn in an escape.} 51... Rb2 52. h4 Rcc2 53. Ra6+ Ke7 54.
Rf1 Kf7 55. g3 Ke7 $2 (55... f5 $1 {
opens square f6 for the king and the defence becomes easy.}) 56. Ra7+ Ke6 $2 (
56... Kf8 $1 {guards square g7.}) 57. Rg7 Kf5 (57... Rb5 $1 58. Ra1 $1 Rc6 59.
Kg2 {leads to a positional triumph.}) 58. e4+ $1 Kxe4 59. Rxg6 Rc6 60. Re1+ Kd4
61. Re3 Rb5 62. Rf3 Ke5 63. Rh6 Rbb6 64. Rxh5+ Ke6 {White has a material win.}
1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "8"]
[White "Planinc, Albin"]
[Black "Timman, Jan"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2525"]
[BlackElo "2470"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1973.??.??"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Nbc6 8.
Be2 Qa5 9. Bd2 c4 10. Ng5 $5 h6 11. Nh3 Ng6 12. a4 ({
Planinc will beat Timman by} 12. Bh5 {Wijk aan Zee 1974}) ({and by} 12. O-O {
in Amsterdam 1974.}) 12... Bd7 13. O-O O-O-O $5 14. Bh5 $1 Nce7 15. Qe1 Kb8 16.
f4 Ka8 $5 17. Bc1 f5 $5 18. exf6 gxf6 19. f5 $5 exf5 20. Ba3 {
White has the initiative.} 20... Rhe8 21. Qd2 Rg8 22. Bb4 Qc7 23. Rae1 Bxa4 $2
{Timman allows an attack in the centre.} 24. Nf4 $1 Qd7 25. Rf2 ({
Even stronger is} 25. Ne6 $1 Rde8 26. Nc5) 25... b6 26. Rfe2 Nxf4 27. Rxe7 Nxg2
28. Rxd7 Nxe1+ 29. Kf1 Rxd7 30. Qxe1 Rg5 ({Or} 30... Rdg7 31. Qe6 $1) 31. h4
Rxh5 32. Qe8+ Kb7 33. Qxh5 a5 34. Bf8 Bxc2 35. Qxh6 Be4 36. Qxf6 1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "9"]
[White "Ribli, Zoltan"]
[Black "Planinc, Albin"]
[Result "0-1"]
[ECO "E69"]
[WhiteElo "2525"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1973.??.??"]

1. Nf3 g6 2. d4 Bg7 3. c4 Nf6 4. g3 O-O 5. Bg2 d6 6. Nc3 Nbd7 7. O-O e5 8. e4
Re8 9. h3 exd4 10. Nxd4 Nc5 11. Re1 a5 12. Rb1 c6 13. Bf4 a4 14. b4 {
They play a modern Kings Indian.} 14... axb3 15. axb3 h6 $5 (15... Nh5 {
was played in Doda - Hort, Varna 1962.}) 16. b4 Ne6 17. Nxe6 Bxe6 18. Bxd6 Bxc4
19. e5 $1 {Ribli takes the initiative.} 19... Nd7 20. f4 f6 $1 21. b5 fxe5 22.
bxc6 bxc6 23. Bxc6 Ra6 {A complicated position has arisen.} 24. Qf3 $4 ({
The accurate} 24. Bd5+ Bxd5 25. Qxd5+ Kh7 26. fxe5 Nxe5 {draws (Petrosian).})
24... e4 $3 {Black intervenes on a long diagonal.} 25. Bxd7 $6 ({Better is} 25.
Rxe4 Rxc6 26. Rxe8+ Qxe8 27. Qxc6 Qe3+ 28. Kh2 {(Petrosian), but} 28... Qd2+ $1
29. Qg2 Qxd6 {wins material.}) 25... Bd4+ 26. Kh2 Rxd6 27. Nxe4 Rxd7 28. f5
gxf5 29. Qxf5 Rf8 30. Qh5 Bg7 31. h4 Bd3 32. Rbd1 Bxe4 {
Planinc had scored a sensational 71/2/9. Petrosian followed by two points.} 0-1

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "10"]
[White "Langeweg, Kick"]
[Black "Petrosian, Tigran V"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2430"]
[BlackElo "2640"]
[Annotator "JvR"]
[PlyCount "102"]
[EventDate "1973.??.??"]

1. Nf3 d6 2. d4 Bg4 3. e4 Nf6 4. Nc3 e6 5. Be2 Be7 6. O-O O-O 7. Bf4 c6 8. h3
Bxf3 9. Bxf3 d5 10. Qd3 a6 11. e5 Nfd7 12. Ne2 b5 13. a4 Nb6 14. axb5 cxb5 15.
Ra2 Ra7 16. c3 b4 17. b3 bxc3 18. Qxc3 Qd7 19. Rc1 Rc8 20. Qa1 Rac7 21. Rxc7
Rxc7 22. Bd2 Qc8 23. g3 Rc2 24. Rxc2 Qxc2 25. Qc3 Qxc3 26. Bxc3 {
An equal endgame has resulted from the exchanges.} 26... Nc6 27. Nc1 Na8 $1 28.
Be2 Nc7 29. Kf1 f5 30. Bd3 Nb5 31. Bxb5 axb5 32. Bb2 h5 33. f3 h4 $1 34. gxh4
Bxh4 35. Nd3 Bd8 {Troubles are starting for Langeweg.} 36. Nc1 $2 (36. Nc5 $1
Kf7 37. f4 Be7 {(Gagarin)} 38. Ke2 $1 b4 39. Kd3 {defends accurately.}) 36...
Bb6 $2 (36... Bg5 $1 37. Ne2 Bd2 $1 38. Kf2 Na5 39. Bc3 Nxb3 $1 {wins a pawn.})
37. Ne2 b4 38. Kg2 Kf7 39. Ba1 Na5 40. Nc1 Kg6 41. Bb2 $6 (41. h4 $1 Kh5 42.
Kh3 Bd8 43. Nd3 Nxb3 44. Nf4+ Kh6 45. Bb2 {
is mentioned by Petrosian as the draw from the adjourned game. But} 45... Bb6
$1 46. Nxe6 Kh7 $1 47. Kg3 Kg8 $1 {brings an edge.}) 41... Kg5 $1 42. Kg3 f4+
43. Kg2 Kh4 44. Kh2 g5 45. Kg2 Kh5 46. Kh2 Nc6 $1 47. Ne2 Ne7 48. Kg2 Nf5 49.
Kh2 Kh4 50. Kg2 Ne3+ 51. Kh2 Nc2 $1 {
Pawn f3 will fall soon. 
Tigran trailed by 11/2 points on the leader Planinc.}
0-1

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "11"]
[White "Petrosian, Tigran V"]
[Black "Planinc, Albin"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2640"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1973.??.??"]

1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O e5 7. d3 Re8 8. Bd2
c6 9. Rc1 a5 $5 10. a3 Na6 11. Be3 Rb8 12. Qb3 Nd7 13. Qc2 Ndc5 14. Rfd1 Bf5
15. Rb1 Ne6 16. b4 Nd4 17. Qa2 axb4 18. axb4 Ra8 19. Qd2 Nc7 20. Bh6 {
Little happens in a game when Petrosian plays safely. Planinc cannot sit still.
} 20... Nxf3+ $6 ({Better is} 20... Bg4 $5) 21. Bxf3 Bh8 $2 (21... d5 $1 {
counters timely (Petrosian).}) 22. b5 $1 Qd7 23. Rdc1 Be6 24. Qe3 Ra3 (24... d5
$1 {brings the proper activity.}) 25. Bg2 Rc8 26. bxc6 bxc6 27. Rb7 Bg7 28.
Bxg7 Kxg7 29. c5 $1 {Pawn c6 will become a target.} 29... Ra5 30. cxd6 Qxd6 31.
Ne4 Qd4 32. Qxd4 exd4 33. Nd6 Rd8 34. Nxf7 $1 Bxf7 35. Rxc7 Re5 36. Be4 Rde8
37. R1xc6 Kg8 38. Rd6 Be6 39. Rxd4 {
The gap with Planinc had shrimped to half-a-point.} 1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "12"]
[White "Ribli, Zoltan"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "C79"]
[WhiteElo "2525"]
[BlackElo "2565"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1973.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 Nf6 7. Re1 g6 8. d4
Qe7 9. Bg5 Bg7 10. Nbd2 h6 11. Bh4 O-O 12. Nf1 Qe8 13. Bc2 Nh5 14. Ne3 Ne7 15.
Qd2 f6 16. h3 Be6 17. c4 Rd8 18. b4 c6 19. Rad1 b5 20. d5 cxd5 21. exd5 Bc8 22.
c5 f5 23. Bxe7 Qxe7 24. c6 g5 25. a4 g4 26. hxg4 fxg4 27. Nh2 g3 28. fxg3 Nxg3
29. Nef1 Nf5 30. axb5 axb5 31. Qd3 Rf6 32. Nf3 Rdf8 33. Qxb5 Qa7+ 34. Kh2 Rg6
35. Re2 Rg4 36. Re4 Nd4 $2 {Things go wrong under time pressure.} 37. Nxd4 exd4
38. Qe2 Be5+ 39. Kh1 Rff4 40. g3 $2 (40. Rxf4 Rxf4 41. Qh5 {wins.}) 40... d3 $1
41. Bxd3 Rxf1+ $2 (41... Rxe4 42. Bxe4 Bxg3 43. Nxg3 Rh4+ $1 44. Qh2 Rxh2+ 45.
Kxh2 Qf2+ 46. Kh1 {equalises.}) 42. Qxf1 Rxg3 43. Rxe5 $2 (43. Rh4 $1 Qe3 44.
Be2 Qg5 45. Rh2 {wins.}) 43... dxe5 44. Qf6 $4 {The tables turn.} ({Right is} 
44. Rd2 $1 Bg4 $1 45. Bg6 $1 Bf3+ 46. Kh2 Qe3 $1 47. Qf2 Rg2+ 48. Qxg2 Bxg2 49.
Rxg2 Qf4+ {and perpetual check.}) 44... Rh3+ ({Simple is} 44... Rh3+ 45. Kg2
Qa2+ 46. Qf2 Rh2+) 0-1

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "13"]
[White "Spassky, Boris"]
[Black "Langeweg, Kick"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "2655"]
[BlackElo "2430"]
[Annotator "JvR"]
[PlyCount "67"]
[EventDate "1973.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3
Be7 9. Be2 O-O 10. O-O b6 11. Be3 Bb7 12. Rc1 Ne5 13. f4 Ned7 $5 (13... Ng6 {
was played in Csom - Barcza, Budapest 1968.}) 14. Bf3 Rb8 15. Qe2 Re8 16. Rfd1
Qc7 17. g4 $5 {Spassky plays an aggressive move after a standard development.
A critical position has come into being.} 17... Red8 $6 ({More solid is} 17...
Nf8 $1 18. g5 N6d7) 18. g5 Ne8 19. Nd5 $1 {Spassky gains an extra advantage.}
19... exd5 20. cxd5 Nc5 21. b4 Bc8 22. bxc5 bxc5 23. Rb1 (23. Nc4 $1 {
proceeds the centre attack.}) 23... Bd7 $6 {Black should exchange the rooks.}
24. Bd2 Qa7 25. Ba5 Rdc8 26. Nc4 Bd8 27. Bc3 $1 Rxb1 28. Rxb1 Rb8 29. Re1 $1
Bb5 30. e5 $1 {Boris conquers the centre.} 30... Bxc4 $2 (30... dxe5 $1 31.
Qxe5 Be7 32. Qxe7 Qxe7 33. Rxe7 Bxc4 {offers more resistance.}) 31. Qxc4 dxe5
32. fxe5 Nc7 (32... Bxg5 33. d6 $1 {also wins for White.}) 33. e6 $1 Ne8 ({Or} 
33... fxe6 34. d6 $1 Nb5 35. Rxe6) 34. d6 $1 {Planinc lost his game and led
shared the lead with Petrosian and Kavalek. Spassky followed.} ({The pointe is
} 34. d6 Nxd6 35. exf7+ Qxf7 36. Bd5 $1) 1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "14"]
[White "Planinc, Albin"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "C95"]
[WhiteElo "2525"]
[BlackElo "2655"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1973.??.??"]

{Petrosian and Kavalek played a quick draw. They expected a win by Spassky. 

} 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 {Boris plays his beloved Breyer Variation.} 11. Nbd2
Bb7 12. Bc2 Re8 13. b4 Bf8 14. a4 Nb6 15. a5 Nbd7 16. Bb2 Rb8 $5 ({
Spassky played} 16... Qb8 {versus Fischer in Reykjavik 1972.}) 17. Rb1 Ba8 18.
Ba1 g6 19. c4 $5 exd4 20. cxb5 axb5 21. Nxd4 d5 $5 {
Boris makes his favourite move.} 22. N4f3 $5 dxe4 23. Ng5 e3 $1 24. Bb3 $5 Bd5
$5 25. fxe3 c6 $6 ({Preferable is} 25... Qe7 $1 26. Bxd5 Nxd5) 26. e4 $1 Bxb3
27. Qxb3 Qe7 28. Ndf3 $6 (28. Rf1 $1 {gains a plus (Petrosian).}) 28... h6 $1
29. e5 $1 Nd5 30. e6 $5 ({Timman prefers} 30. Ne4) 30... hxg5 $1 31. exd7 Qxd7
32. Ne5 Qd6 33. Qf3 $5 f5 $5 34. Bd4 $2 ({Right is} 34. Nd3 $1 Rxe1+ 35. Rxe1
Nxb4 36. Be5 Qxd3 37. Bxb8) 34... Nxb4 {Black has won two pawns.} 35. Qb3+ Qd5
$2 (35... Nd5 $1 {reorganises the defence.}) 36. Qxd5+ cxd5 37. Nd7 Rxe1+ 38.
Rxe1 Ra8 39. Re6 Nc2 $1 40. Be5 Bb4 {White has a sufficient counter-play.
Spassky highly praised Planinc.   The top of the table remained unchanged.}
1/2-1/2

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "14"]
[White "Timman, Jan"]
[Black "Quinteros, Miguel"]
[Result "1-0"]
[ECO "B97"]
[WhiteElo "2470"]
[BlackElo "2520"]
[Annotator "JvR"]
[PlyCount "57"]
[EventDate "1973.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2
Qxb2 9. Nb3 Qa3 10. Bxf6 gxf6 11. Be2 Qb4 12. O-O Be7 13. Bh5 $5 ({Minic played
} 13. Kh1 {
against Quinteros in the Poisoned Pawn Variation (Vidmar Memorial 1973).})
13... Rg8 14. Kh1 Qb6 15. Rae1 Kf8 $5 16. Re3 Rg7 17. Rff3 Kg8 $6 {
Black should develop the queenside.} 18. Rg3 Bf8 19. Rxg7+ Bxg7 20. Rd3 Qc7 21.
Rxd6 Bd7 $6 (21... Nc6 $1 {hinders a march in the centre.}) 22. e5 $1 Kf8 $2 (
22... fxe5 23. fxe5 Qc4 $1 24. Be2 Qh4 25. Nd4 Bh6 {
fights actively for survival.}) 23. Ne4 $1 fxe5 ({Or} 23... Qc4 24. Kg1 $1 Qxe4
25. Nc5) 24. Nbc5 Ke7 25. fxe5 Be8 26. Rxe6+ $1 {
Timman enjoys the end. Notice the black queenside.} 26... Kf8 (26... fxe6 27.
Qg5+ {breaks the defence.}) 27. Rxe8+ $1 Kxe8 28. Ne6 $1 Qb6 29. Nd6+ {
Black will elementary lose the queen by a fork.} 1-0

[Event "IBM Amsterdam"]
[Site "13"]
[Date "1973.??.??"]
[Round "15"]
[White "Enklaar, Bertus"]
[Black "Planinc, Albin"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2445"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "52"]
[EventDate "1973.??.??"]

{The public was excited by the tournament. 1300 visitors attended to the last
round. Kavalek could not break the defence of Szabo and Petrosian outplayed
Radulov. Planinc encountered Enklaar.   } 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4
Nf6 5. O-O b5 6. Bb3 Bb7 {He plays the Planinc Variation of the Ruy Lopez.} 7.
Re1 Bc5 8. c3 O-O 9. d4 Bb6 10. Bg5 h6 11. Bh4 d6 12. a4 exd4 13. axb5 axb5 14.
Rxa8 Bxa8 15. cxd4 Re8 16. Nc3 g5 17. Bg3 Na5 18. d5 $5 ({Enklaar improves on} 
18. e5 $6 {(Ciocaltea - Planinc, Vidmar Memorial 1973).}) 18... b4 $1 19. Ba4
$6 Re7 $1 {Planinc takes a positional plus after a long thought.} 20. Na2 Nxe4
21. Nxb4 f5 22. Bc2 Qe8 $1 {The white position has become horrible.} 23. Nd4 $2
(23. Ba4 $1 Qg6 $1 24. Nd2 f4 25. Rxe4 Rxe4 26. Bc2 $1 {fights on.}) 23... f4
$1 24. Nf5 Re5 25. Nxh6+ Kg7 26. Ng4 $6 ({Or} 26. Nf5+ Rxf5 27. Rxe4 Re5) 26...
Nxf2 $1 {Petrosian and Planinc won by a score of ten. Kavalek followed at
half-a-point and Spassky at one point.} (26... Nxf2 27. Bxf2 Rxe1+ 28. Qxe1
Qxe1# {ends the tournament with a bang.}) 0-1

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "1"]
[White "Tukmakov, Vladimir"]
[Black "Sosonko, Gennadi"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "2570"]
[BlackElo "2450"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1974.??.??"]

{The Soviet hero should have become Efim Geller, but he was in bad shape from
16 vii until 3 viii 1974.   } 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
g6 6. f3 Bg7 7. Be3 Nc6 8. Qd2 O-O 9. Bc4 Bd7 10. O-O-O Rc8 11. Bb3 Ne5 12. h4
h5 13. Kb1 Nc4 14. Bxc4 Rxc4 15. Nb3 Qc7 16. Bd4 Be6 $6 {
This move was played in Musil - Baretic, Cateske Toplice 1968.} 17. g4 $1 {
Tukmakov betters the theory of the Dragon.} 17... Rc8 ({The pointe is shown by
} 17... hxg4 $5 18. h5 $1 {(Prandstetter - Gazik, Prague 1982).}) 18. gxh5 Nxh5
19. Rdg1 Kh7 20. Bxg7 Kxg7 21. Nd4 Qc5 22. Nce2 Ra4 23. b3 Ra6 24. Rg5 Qa3 25.
Nc1 {The black attack is stopped.} 25... Rc5 26. Rhg1 Bd7 27. Nf5+ $1 Bxf5 28.
Rxh5 Bh3 29. Qh6+ Kf6 30. Qf4+ $1 {White has broken the defence.} 30... Ke6 (
30... Kg7 31. Rh7+ $1 {leads to mate.}) 31. Rh7 f6 32. Qg3 f5 33. Qxh3 {
Tukmakov took over the expected role of Geller in the tournament.} 1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "2"]
[White "Knaak, Rainer"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "E44"]
[WhiteElo "2515"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "90"]
[EventDate "1974.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ne4 6. Qc2 f5 7. f3 Nxc3 8. bxc3
$2 {Knaak bolsters the centre by an oddity.} (8. Nxc3 {equalises.}) 8... Bd6 $1
9. e4 O-O 10. e5 Be7 11. Nf4 d6 $1 {Timman overtakes the centre.} 12. exd6 Bxd6
13. Bd3 c5 14. d5 e5 15. Ne2 Qh4+ 16. g3 Qh3 17. Ng1 Qh5 18. Be3 Nd7 19. O-O-O
Nf6 {Black has a great positional advantage.} 20. h3 Bd7 21. Qg2 e4 22. fxe4
Nxe4 23. Ne2 Qg6 24. Rhg1 Rae8 25. Bf4 Bxf4+ 26. gxf4 Qf6 27. Kb2 Re7 28. Rc1
Rfe8 29. Bxe4 fxe4 $1 30. Qg3 e3 {Timman is better on all fronts.} 31. Rcd1 Bf5
32. h4 h5 $5 33. Qg5 $1 Qxg5 34. Rxg5 Bg4 35. Re1 Re4 36. f5 $5 Bxe2 37. Rxe2
Rxh4 38. f6 $1 {Knaak grabs his last chance.} 38... Rg4 39. Rxh5 gxf6 {
White has countered.} 40. d6 $5 ({The critical line is} 40. Rf5 $1 Kf7 41. Rf3
Rge4 $1 42. Kc2 R8e5 $1 43. Kd3 b5 $1 44. cxb5 c4+ 45. Kc2 f5 $1 {
and Black wins.}) 40... Rg7 41. Reh2 e2 $5 42. Rh8+ ({Or} 42. d7 e1=Q $1) 42...
Kf7 43. Rxe8 Kxe8 44. Rxe2+ Kd7 45. Rd2 f5 {
The rook ending poses little problems.} 0-1

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "3"]
[White "Velimirovic, Dragoljub"]
[Black "Csom, Istvan"]
[Result "1-0"]
[ECO "B89"]
[WhiteElo "2530"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1974.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 a6 6. Bc4 e6 7. Bb3 Be7 8. Be3
Nc6 9. Qe2 Qc7 10. O-O-O O-O 11. Kb1 $5 {
This line suits a <->Yugoslavian fighter'.} 11... b5 12. Nxc6 Qxc6 13. Bd4 {
Two bishops are pointed at the kingside.} 13... Bb7 14. Rhe1 Qc7 15. a3 Rac8
16. f4 e5 $2 ({Preferable is} 16... Rfd8 {(Duester - Vogel, Eberbach 1980).})
17. fxe5 dxe5 18. Nd5 $1 ({Not} 18. Be3 Bxa3 $1) 18... Bxd5 19. exd5 exd4 20.
Qxe7 Qxh2 $5 21. d6 Rce8 22. Bxf7+ $1 {White breaks the defence line.} 22...
Rxf7 23. Qxe8+ $1 Nxe8 24. Rxe8+ Rf8 25. d7 Qd6 26. Rf1 $1 {An elegant finish!}
1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "4"]
[White "Knaak, Rainer"]
[Black "Planinc, Albin"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2515"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1974.??.??"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. f3 d5 5. cxd5 Nxd5 6. Nxd5 Qxd5 7. e4 Qd6 $5 {
White has a plus in an odd opening.} 8. Bd3 Qb4+ 9. Qd2 (9. Kf1 $1 {
plays for a win.}) 9... e5 10. Ne2 exd4 11. Nxd4 Nd7 12. Be2 O-O-O 13. a3 Qe7
$5 {The exchange of queens equalises.} 14. Qc3 c5 $6 15. Be3 Ne5 $2 16. O-O g6
17. Qc2 $2 (17. b4 $1 {attacks the king.}) 17... Bg7 18. Nb5 Nc6 19. Bc4 a6 20.
Nc3 Nd4 21. Qf2 f5 22. Nd5 $5 Bxd5 23. Bxd5 $2 f4 $1 24. Bd2 Nb3 $1 25. Bc3 $1
Nxa1 26. Rxa1 Bxc3 27. bxc3 Qe5 28. Qf1 $1 {
Does Planinc proceed his success of last year.} 28... Rxd5 $4 {
No, he collapses.} (28... b5 $1 29. a4 Qxc3 30. axb5 axb5 31. Rb1 $1 Rxd5 $1
32. exd5 Re8 {favours Black.}) 29. Qxa6+ Kc7 30. Qa7+ Kc6 31. Rb1 Qb8 32. exd5+
Kxd5 33. Qd7+ Kc4 34. Qe6+ Kd3 35. Qd5+ Kc2 36. Qd1+ Kxc3 37. Rb3+ {That year I
played in a reserve master group. We sat at the end of a long room in the RAI.
You had to walk back, pass the restaurant and enter the Glazen Zaal (Glass
Room) on your way to the grandmasters and masters. Once I saw the shy Planinc
leave. He watched downwards, because he dared not to look at people.} 1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "5"]
[White "Ivkov, Borislav"]
[Black "Sosonko, Gennadi"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2530"]
[BlackElo "2450"]
[Annotator "JvR"]
[PlyCount "125"]
[EventDate "1974.??.??"]

1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. Bg2 e5 5. d3 Nf6 6. O-O Nd7 7. Na3 Be7 8. Nc2
O-O 9. e3 Bf6 10. exd4 Nxd4 11. Ncxd4 exd4 12. b4 Re8 13. Re1 a5 14. Rxe8+ Qxe8
15. b5 Nc5 16. Ba3 Ne6 17. Qe1 Qd8 18. Qe4 Rb8 19. Qd5 Bd7 20. Ne5 Be8 21. Re1
Be7 22. Qxd8 Bxd8 23. Bd5 Bf6 24. Nxf7 Bxf7 25. Bxe6 Bxe6 26. Rxe6 c6 27. Bd6
Rc8 28. b6 Kf7 29. Re4 c5 30. Bc7 a4 31. f4 a3 32. Re1 Ra8 33. Rb1 Ke6 34. Kf2
Kd7 35. Kf3 Kc6 36. Rb3 h5 37. Rb1 Be7 38. Rb3 Bf6 39. Rb1 Bd8 40. Bxd8 Rxd8
41. Rb3 Re8 42. f5 Re3+ 43. Kf4 Re2 44. Rxa3 Rxh2 45. Ra8 Rf2+ 46. Ke4 Re2+ 47.
Kf4 Rf2+ 48. Ke4 Re2+ 49. Kf3 Re3+ 50. Kf4 Rxd3 51. Rg8 Rd1 52. Rxg7 Rf1+ 53.
Ke4 Re1+ 54. Kf3 {
Ivkov has spoiled a won game, but he still plays for a triumph.} 54... Rf1+ $6
({Better is} 54... d3 $1 55. Rc7+ Kd6 56. Rc8 Ke7 $1 {drawn.}) 55. Ke2 $1 Rxf5
$2 ({Probably} 55... Ra1 $1 {suffices for a draw (Ivkov).}) 56. Rg6+ Kd7 57. a4
Re5+ 58. Kd2 Re7 (58... Re6 59. Rg7+ $1 Re7 60. Rg5 $1 Kc6 61. a5 Rh7 62. Rg6+
{leads to the game.}) 59. a5 Rh7 60. Rg8 Kc6 61. Rg6+ Kd7 62. Kd3 Ke7 63. Rc6
$1 {Ivkov became a participant on the last minute, but he played for victory
in the event from the start.} 1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "6"]
[White "Knaak, Rainer"]
[Black "Ree, Hans"]
[Result "0-1"]
[ECO "D14"]
[WhiteElo "2515"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "46"]
[EventDate "1974.??.??"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bb5
Nd7 9. Ne5 Ncxe5 10. Bxe5 a6 11. Bxd7+ Qxd7 12. O-O f6 13. Bg3 Rc8 14. Rc1 Be7
15. Qb3 O-O 16. Na4 Rxc1 17. Rxc1 Rc8 18. Rc3 $2 (18. Rxc8+ Qxc8 19. Nc5 $1
Bxc5 20. Qc3 b6 21. b4 {draws.}) 18... Rxc3 19. Nxc3 b5 20. f3 b4 21. Qa4 $4
Qc8 $1 22. Ne2 Bc2 23. Qa5 Bd3 {Ree scored well.} 0-1

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "7"]
[White "Velimirovic, Dragoljub"]
[Black "Tukmakov, Vladimir"]
[Result "0-1"]
[ECO "B87"]
[WhiteElo "2530"]
[BlackElo "2570"]
[Annotator "JvR"]
[PlyCount "54"]
[EventDate "1974.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. O-O
Be7 9. Qf3 Qc7 10. a3 $5 ({Theory is} 10. Qg3 {
(Fischer - Olafsson, Buenos Aires 1960).}) 10... Nc6 11. Nxc6 Qxc6 12. Re1 O-O
13. Qg3 Kh8 14. Bg5 Nh5 15. Qh4 Bxg5 {Black exchanges an attacker.} 16. Qxg5
Nf6 17. Rad1 Bb7 18. Rd3 Rad8 19. Rf3 Qc5 $1 {
Tukmakov has neutralised the offensive. Velimirovic cannot accept the draw.}
20. Nd5 $2 exd5 21. Rxf6 dxe4 22. Rf5 d5 $1 23. Re3 $2 (23. c3 $1 {
keeps the initiative.}) 23... f6 $1 24. Qh4 Qe7 25. Rg3 g5 26. Qh5 Qe6 27. Rh3
Qxf5 0-1

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "8"]
[White "Geller, Efim"]
[Black "Lombardy, William"]
[Result "1-0"]
[ECO "B83"]
[WhiteElo "2610"]
[BlackElo "2520"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1974.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Nc6 7. Be3 Be7 8. f4
O-O 9. O-O Bd7 10. Nb3 Qc7 11. Kh1 Rfd8 12. Qe1 $5 {
They have played standard moves of the Scheveningen but left out .. a6.} 12...
Nb4 13. Rc1 Bc6 $5 14. Nd4 $1 a5 15. Bf3 d5 $1 16. e5 Ne4 17. Nxc6 Qxc6 18.
Bxe4 dxe4 19. Bg1 $5 {White wants pawn e4.} 19... Qc4 20. b3 $5 ({
White plays for a win. So he avoids} 20. Qxe4 Qxe4 21. Nxe4 Nxa2 {(Geller).})
20... Qc6 21. a4 Bh4 $5 22. Qe3 Nd5 23. Nxd5 exd5 24. c3 Be7 25. f5 Rac8 ({Not
} 25... Ba3 26. Ra1 Bb2 27. f6 $1) 26. Qg3 Ba3 $2 ({Necessary is} 26... f6 $1)
27. Bd4 $3 {Geller sacrifices a rook.} 27... Bxc1 28. e6 $1 f6 29. Bxf6 Bh6 30.
Bxd8 Rxd8 31. e7 $1 Re8 32. f6 $1 Qe6 {Black has to give material.} 33. f7+
Qxf7 34. Rxf7 Kxf7 35. Kg1 $6 Rxe7 $6 ({Lombardy misses the chance} 35... Ke6
$1 {and Black offers more resistance.}) 36. Kf1 Ke6 37. Ke2 e3 38. Qb8 Rf7 39.
Qc8+ Ke5 40. Qe8+ Kf6 41. Qd8+ Ke6 42. Qe8+ Re7 43. Qc8+ Kd6 44. h4 $1 g6 45.
Qd8+ Ke6 46. Qb6+ Ke5 47. g4 $1 Rf7 48. g5 Bg7 49. Kxe3 Re7 50. Kd3 Rf7 51.
Qxa5 Rf3+ 52. Ke2 Rf7 53. Qd8 Ke6 54. Qb6+ Kf5 55. Kd3 Be5 56. Qd8 Ke6 57. Qe8+
Re7 1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "9"]
[White "Planinc, Albin"]
[Black "Timman, Jan"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2545"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "55"]
[EventDate "1974.??.??"]

1. e4 e6 {Planinc smiles when this move is made as Timman predicted. He has
won twice of Jan in this opening.} 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6.
bxc3 Ne7 7. Nf3 Nbc6 8. Be2 Qa5 9. Bd2 c4 10. Ng5 h6 11. Nh3 Ng6 12. Bh5 Nce7
13. a4 Bd7 14. O-O O-O-O 15. Qe1 $5 ({Timman played} 15. f4 {previously.})
15... Kb8 16. Bc1 Rc8 17. Ba3 Qd8 $5 18. a5 $1 Rg8 19. Qc1 Rc6 20. a6 $1 {
White has the initiative on two flanks.} 20... b6 21. f4 f5 $6 ({
Timman mentions the neutral} 21... Ka8) 22. exf6 $5 gxf6 23. f5 $5 Nxf5 24.
Rxf5 $5 exf5 25. Qxh6 {Planinc has made a positional sacrifice.} 25... f4 $2 (
25... Qe8 $1 26. Kh1 Rh8 $1 27. Qxg6 Rxh5 28. Qxe8+ Bxe8 29. Nf4 {
leads to great complications.}) 26. Bxg6 Bxh3 27. Qxh3 Rxg6 28. Qh7 {Planinc ha
d won for the third time in this line of Timman.   The standings at the top
were: Tukmakov and Ree 61/2/9, Ivkov and Jansa 6.} 1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "10"]
[White "Ivkov, Borislav"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "A12"]
[WhiteElo "2530"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1974.??.??"]

{A Dutchman led for the first time since the sixties. The public was excited.
But, a Yugoslavian tragedy had started.   } 1. Nf3 Nf6 2. c4 c6 3. b3 d5 4. Bb2
Bf5 5. g3 e6 6. Bg2 Nbd7 7. O-O Bd6 8. d3 O-O 9. Nbd2 Qe7 10. a3 $5 a5 11. Re1
e5 12. Nh4 Be6 13. cxd5 cxd5 14. e4 dxe4 15. Nxe4 Nxe4 16. Bxe4 {
So far, little has happened in the Reversed King's Indian.} 16... Nc5 ({Best is
} 16... f5 17. Bg2 $1 Qf7 {(Timman).}) 17. Nf5 $1 Bxf5 18. Bxf5 a4 $2 ({
More active is} 18... Qg5 $1 {(Ivkov).}) 19. b4 Nb3 20. Rb1 Rfe8 $2 (20... Qg5
$1 {(Ivkov) moves the queen from the e-file.}) 21. d4 $1 Qf6 22. Be4 Rab8 23.
dxe5 Bxe5 24. Bxe5 Rxe5 25. Bxb7 g6 26. Rxe5 Qxe5 27. Qd7 Nd4 28. Rd1 Ne6 29.
Bg2 Qb2 30. Qxa4 Nd4 31. Re1 Kg7 32. Qd1 Rd8 33. Qa1 Qb3 34. Rd1 Qc4 35. b5 Qc5
36. b6 $2 f6 $2 ({They miss} 36... Qxb6 {in time troubles.}) 37. b7 Nc2 38. Qb1
Nxa3 39. b8=Q {Ree had lost to the first Yugoslavian.} 1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "11"]
[White "Velimirovic, Dragoljub"]
[Black "Jansa, Vlastimil"]
[Result "0-1"]
[ECO "B46"]
[WhiteElo "2530"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1974.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. g3 Nge7 7. Nb3 d6 8. Bg2
Bd7 9. O-O Nc8 10. a4 Be7 11. f4 $5 O-O 12. Kh1 Qc7 13. g4 $5 {
Velimirovic fights in the Sicilian Defence.} 13... Re8 14. g5 Nb6 15. f5 Bf8
16. Qh5 Ne5 17. Nd4 Rac8 18. Rf4 g6 19. Qh3 Nbc4 20. Rh4 h5 $1 {
Black defends actively. Velimirovic does not find the proper continuation.} 21.
Nde2 $2 ({Right is} 21. gxh6 Kh7 22. Rf4) 21... Ng4 $1 22. Qg3 Qc5 23. Rxg4 $5
hxg4 24. b3 Ne5 25. Be3 Qa5 26. Bd2 Qc7 27. Nf4 Bg7 28. f6 Bf8 29. h4 b5 30.
axb5 axb5 31. h5 b4 32. Nce2 Qxc2 33. Be3 gxh5 34. Qh4 Bc6 35. Nd4 Qc3 36. Re1
Ra8 37. Re2 Nf3 $1 38. Nxf3 gxf3 39. Bxf3 Ra1+ $2 40. Kh2 Qe5 $2 41. Rg2 $4 (
41. Bxh5 $1 Bg7 42. Bxf7+ Kxf7 {(Jansa)} 43. g6+ Kf8 44. fxg7+ Qxg7 45. Nd5 {
wins for White!}) 41... Bxe4 42. Bxe4 Qxe4 43. g6 fxg6 44. Qg3 Kf7 45. Nxg6
Rea8 46. Nf4 R1a2 47. Qg8+ Ke8 48. Qh8 Qxe3 0-1

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "12"]
[White "Jansa, Vlastimil"]
[Black "Ree, Hans"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "2535"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1974.??.??"]

1. g3 g6 2. Bg2 c5 3. d3 Bg7 4. f4 Nc6 5. Nf3 e6 6. O-O Nge7 7. c3 O-O 8. e4 d6
9. Be3 f5 10. Nbd2 b6 11. Re1 Qd7 12. d4 Bb7 13. Bf2 Rae8 14. Qa4 h6 15. Rad1
Qc7 16. Qb3 Nc8 17. dxc5 dxc5 18. Nc4 Kh7 19. a4 Rd8 20. exf5 exf5 21. Re6
Rxd1+ 22. Qxd1 Rd8 23. Qe2 Qd7 24. h3 $2 (24. Nh4 Qd1+ 25. Qxd1 Rxd1+ 26. Re1 {
draws.}) 24... N6e7 $1 25. Nh4 $2 ({Better is} 25. a5 $1 Be4 26. Rxe4 fxe4 27.
Qxe4) 25... Be4 $1 {White has to lose material.} 26. Rxe4 fxe4 27. Qxe4 Re8 28.
Ne5 Qd1+ 29. Kh2 Nd6 30. Qe3 Nef5 31. Nxf5 Nxf5 32. Qe4 Qd6 33. Qb7 Re7 34. Qa8
Bxe5 35. fxe5 Qxe5 36. Bd5 Qh8 37. Qc6 Qe8 38. Qf6 Re2 39. Kg1 Rxf2 $1 {
Black will win the bishop.   Ree had a new aim: he needed to score 1/3 for a
grandmaster result.} 0-1

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "13"]
[White "Ree, Hans"]
[Black "Planinc, Albin"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2425"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1974.??.??"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c3 Nf6 5. Nbd2 O-O 6. Bd3 Nbd7 7. O-O e5 8.
dxe5 dxe5 9. Nc4 {Hans wants a quick draw.} 9... Qe7 $5 (9... Nc5 10. Bc2 Qxd1
11. Rxd1 Nfxe4 12. Re1 Nd6 13. Ncxe5 {
helps him on his way, but Albin does not cooperate.}) 10. b4 b6 11. Qc2 Bb7 12.
a4 Nh5 13. a5 f5 $5 14. a6 Bc6 15. Ncd2 Rae8 $5 16. exf5 gxf5 17. Bxf5 $5 e4 $1
18. Nd4 Bd5 $6 (18... Bxd4 19. cxd4 Bb5 {takes less risk.}) 19. N2b3 $6 ({
Better is} 19. Qd1 $1 Nf4 20. Qg4) 19... Qf7 $5 20. c4 $1 Ba8 21. Bxd7 Qxd7 22.
Be3 Nf4 23. Bxf4 Rxf4 24. Rad1 e3 {The critical position has arisen.} 25. Ne2
$4 ({Right is} 25. fxe3 Rxf1+ 26. Rxf1 Rxe3 {(Timman)} 27. Qd2 $1 {
and they fight on.}) 25... Rxf2 $1 26. Rxf2 ({Or} 26. Rxd7 Rxg2+ 27. Kh1 Rxe2+)
26... exf2+ 27. Kxf2 Qg4 28. Ng3 h5 29. Kg1 h4 30. Nf1 Be4 31. Qd2 Bh6 32. h3
Qg6 33. Qf2 Rf8 34. Qe2 Bf3 $1 {Ree was beat by the second Yugoslavian.  
 Actually, Planinc was a Slovenian from Brise. He worked in a bicycle factory
and lived with his mother in a small housing. His Dutch events befell in 1973
and 1974. Later he moved to a psychiatric clinic.} 0-1

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "14"]
[White "Velimirovic, Dragoljub"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "B87"]
[WhiteElo "2530"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "149"]
[EventDate "1974.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bc4 a6 7. Bb3 b5 8. Qe2
Be7 9. Be3 O-O 10. O-O-O b4 11. Na4 Bd7 $5 12. e5 $5 dxe5 13. Nf3 Bb5 $1 {
Ree neutralises the Yugoslavian attack.} 14. Rxd8 Bxe2 15. Rxf8+ Bxf8 16. Nxe5
Nbd7 17. Nxd7 Nxd7 18. f4 Rc8 19. Re1 Bb5 20. g3 Bxa4 21. Bxa4 Nc5 22. Bxc5
Bxc5 23. Re4 Rd8 24. c3 bxc3 25. bxc3 Kf8 26. Kc2 g6 27. Bb3 Ke7 28. g4 Kd6 29.
Ra4 Ra8 30. f5 $5 gxf5 31. gxf5 exf5 32. Rh4 Ke5 33. Bxf7 Rc8 34. Rxh7 Bd4 35.
c4 Rb8 36. Rh6 Rb2+ 37. Kd3 Bg1 38. h4 Rxa2 39. c5 Ra3+ 40. Kc4 Ra1 $6 (40...
Ra4+ $1 41. Kb3 Rg4 42. c6 Bb6 {gives White no winning chances.}) 41. Re6+ $1
Kf4 42. c6 $1 Bb6 43. h5 $1 Rh1 44. h6 Kg3 45. Rf6 f4 46. Bd5 Rh4 47. Be4 Kf2
48. h7 Ke3 49. Rf8 Kxe4 50. h8=Q Rxh8 51. Rxh8 Ke5 52. Rf8 Kd6 53. Rf6+ Ke5 54.
Rh6 f3 55. Rh8 f2 56. Rf8 Kd6 57. Rf6+ Ke5 $4 {
Ree fails against the third Yugoslavian.} ({Right is} 57... Ke7 $1 {drawn.})
58. Rxf2 $1 Kd6 59. Rf6+ Kc7 60. Kd5 $1 Bg1 61. Rh6 Bf2 62. Rg6 Be3 63. Rg4 Bd2
64. Re4 a5 65. Re7+ Kc8 66. Rf7 a4 67. Rf2 Ba5 68. Rf3 Kc7 69. Rg3 Bd2 70. Rg7+
Kc8 71. Rg4 Ba5 72. Rxa4 Be1 73. Rg4 Kc7 74. Rg7+ Kc8 75. c7 $1 {Ree had lost
this game, drew in the last round and scored no grandmaster result.} ({See} 75.
c7 Kb7 76. Kd6 Ba5 77. Rf7 Bb6 78. c8=Q+ $1 Kxc8 79. Kc6) 1-0

[Event "IBM Amsterdam"]
[Site "14"]
[Date "1974.??.??"]
[Round "15"]
[White "Geller, Efim"]
[Black "Tukmakov, Vladimir"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2610"]
[BlackElo "2570"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1974.??.??"]

{Tukmakov led by half-a-point on Ivkov and one point on Jansa. He had gone to
the movies with Geller like friends.   } 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3
e6 5. Bxc4 c5 6. O-O a6 7. a4 Nc6 8. Qe2 cxd4 9. Rd1 Be7 10. exd4 O-O 11. Nc3
Nd5 12. Bd2 b6 $5 ({Known is} 12... Nb6 {(Jansa - Banas, Novy Smokovec 1971).})
13. Ne5 $1 Ncb4 $2 {Black will lose a pawn.} ({Ok is} 13... Nxe5 14. dxe5 Nxc3
15. Bxc3 Qc7 {(Atalik).}) 14. Nxd5 exd5 ({Not} 14... Nxd5 $2 15. Nc6 Qd6 16.
Bxd5 {(Kavalek).}) 15. Bxb4 Bxb4 16. Nc6 Qd6 17. Bxd5 $1 {Geller becomes mean.}
17... Bb7 18. Nxb4 Bxd5 19. Nxd5 Qxd5 20. Rac1 Rfe8 21. Qc4 $1 Qxc4 22. Rxc4
Rad8 23. Kf1 Kf8 24. Re1 $1 Re6 $2 {Black gets a weak pawn.} 25. Rxe6 fxe6 26.
Ke2 Ke7 27. Rc7+ Kf6 28. Ke3 Rd6 29. Ke4 h6 30. b4 $1 g5 31. Ra7 b5 32. axb5
axb5 33. Rh7 Kg6 34. Rb7 Rd5 35. g4 Kf6 36. Rh7 Kg6 37. Rb7 Kf6 38. h3 Kg6 39.
Rc7 Rd8 40. Rc5 {Ivkov, Tukmakov and Jansa ended at 10/15, followed by Ribli
(9), and the poor Ree as fifth (81/2). Ivkov was called the winner on SB-score.
} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "1"]
[White "Uhlmann, Wolfgang"]
[Black "Makarichev, Sergey"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2535"]
[BlackElo "2440"]
[Annotator "JvR"]
[PlyCount "122"]
[EventDate "1975.??.??"]

{AMSTERDAM 1975  The fifteenth tournament occurred from 8 until 26 vii 1975.
Makarichev and Boehm had promoted from the master group. They would play a
main role.   } 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. f3 exf3 10. Nxf3 d5 11. cxd5 Qxd5 12. Nd4 Qh5 13. Nxc6
bxc6 14. e3 Bg4 15. Bf3 $5 Qg6 {Black has the initiative.} 16. Bxg4 Nxg4 17.
Qe2 Rad8 18. Ba3 h5 19. Rab1 a5 20. Rb7 Rd7 21. Qg2 Qe6 22. Bc1 Ne5 23. Qe4 Nd3
24. Qxe6 Rxe6 25. Ba3 Re4 26. Rf5 Ra4 27. Rxh5 $5 g6 $1 28. Rb8+ Kg7 29. Bf8+
Kf6 30. Rh4 Rxa2 31. Rb1 $5 Rd5 32. Rf1+ Rf5 33. Rxf5+ Kxf5 34. Rd4 Rxd2 35.
Kf1 $2 ({Right is} 35. Ra4 $1) 35... Ke6 36. h4 f5 37. Bc5 Kf7 38. Rd7+ Ke8 39.
Rd4 a4 40. Bb4 Rf2+ $5 {We will see.. c5! later.} 41. Kg1 Rd2 {Black wins.} 42.
Kf1 $5 ({Or} 42. e4 $1 Ne1 $1 43. Rxd2 Nf3+ 44. Kf2 Nxd2 45. exf5 gxf5 46. Ke3
a3 $1) 42... c5 $1 43. Bxc5 Rf2+ 44. Kg1 Nxc5 $1 45. Kxf2 a3 46. Rd1 Nb3 47. e4
fxe4 48. Ke3 a2 49. g4 Kf7 50. c4 a1=Q 51. Rxa1 Nxa1 52. Kxe4 Kf6 53. Kd5 Nc2
54. Kc6 Ne3 55. c5 Nxg4 56. Kxc7 Ne5 57. Kd6 Kf5 58. Ke7 Nd3 59. Kf7 Nxc5 60.
Kg7 Nd3 61. Kh6 Nf4 0-1

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "2"]
[White "Razuvaev, Yuri"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2515"]
[BlackElo "2470"]
[Annotator "JvR"]
[PlyCount "53"]
[EventDate "1975.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 a6 7. g5 Nfd7 8. Bg2
Nc6 9. h4 Nxd4 10. Qxd4 b5 11. a4 $5 {White has the initiative.} 11... e5 12.
Qd1 $1 bxa4 13. f4 $5 {The attack on the kingside is revived.} 13... Bb7 14. f5
$5 Rc8 15. O-O a3 $2 (15... h6 16. Qh5 d5 {counters.}) 16. Rxa3 d5 $1 17. Rb3
$1 Nc5 18. Rxb7 Nxb7 19. Nxd5 Bc5+ 20. Kh2 O-O $5 {White gets a new target.} (
20... Rc6 {takes less risk.}) 21. Qg4 Kh8 22. Qh5 $5 Qe8 23. c3 a5 24. Qg4 $5
Nd6 25. h5 Nc4 26. g6 Nb6 ({Razuvaev mentions} 26... Rc6 {
as superior but White can win anyway by} 27. gxh7 f6 28. h6 {
and he removes the defenders of the kingside.}) 27. Nf6 $1 {
Ree cannot defend against the offensive. He scored poorly this time.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "3"]
[White "Ljubojevic, Ljubomir"]
[Black "Makarichev, Sergey"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2615"]
[BlackElo "2440"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1975.??.??"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8.
Re1 Bg4 9. c3 f5 10. Qb3 O-O 11. Nfd2 $2 ({Correct is} 11. Nbd2) 11... Nxf2 $1
{Ljubojevic has fallen into a trap.} 12. Kxf2 Bh4+ 13. g3 f4 $1 14. Kg2 ({
The first pointe is} 14. gxh4 Qxh4+ 15. Kf1 {(Minic)} 15... f3 $1) 14... fxg3
15. Be4 ({The second point is} 15. hxg3 Qg5 $1 16. Ne4 Bf3+ 17. Kg1 Qg4 $1 18.
Qxd5+ Kh8 19. Rf1 Qh3 20. Rxf3 Rxf3 21. Bf4 Rf8 $1) 15... Bh3+ $1 16. Kg1 ({Or
} 16. Kxh3 Qd7+ 17. Kg2 Rf2+ {(Minic).}) 16... gxh2+ 17. Kxh2 Qd6+ 18. Kh1 Bxe1
19. Qxd5+ Qxd5 20. Bxd5+ Kh8 21. Nf3 Bg3 22. Ng1 Bf1 23. Nd2 Rae8 24. Ne4 Rxe4
25. Bxe4 Rf2 26. Nf3 Bg2+ 27. Kg1 Bxf3 28. Bxf3 Rxf3 {The Soviets did not take
IBM, Hoogovens and Hastings seriously, but Makarichev found the level high in
other games.} 0-1

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "4"]
[White "Timman, Jan"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "B99"]
[WhiteElo "2510"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1975.??.??"]

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. Bd3 h6 11. Qh3 Nb6 12. Bh4 $6 {
Timman played this move versus Browne in Wijk aan Zee 1975.} 12... e5 13. Nf5
g6 $1 14. Nxe7 Bxh3 15. Bxf6 Be6 $1 16. f5 Rf8 17. Bb5+ $2 ({Preferable is} 17.
fxe6 fxe6 18. Bb5+ $1 Kf7 19. Rhf1 {and Black has a plus.}) 17... Bd7 18. Ned5
Nxd5 19. Nxd5 {A new move follows.} 19... Qa5 $1 ({
Kavalek improves on Timman's analysis} 19... Qc5 $4 20. b4 $1) 20. Bxd7+ Kxd7
21. a4 Qc5 22. b4 Qc6 23. a5 gxf5 24. exf5 Rg8 25. Nb6+ Ke8 26. g3 Rg4 27. Rhe1
Rb8 28. Bxe5 dxe5 29. Rxe5+ Kf8 30. Nd7+ Kg7 31. f6+ Kh7 32. Nxb8 Qc3 33. Rdd5
Rd4 {Kavalek started with 31/2/4 but fell back.} 0-1

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "5"]
[White "Raicevic, Vladimir"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "A19"]
[WhiteElo "2440"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1975.??.??"]

1. c4 Nf6 2. Nc3 e6 3. e4 c5 4. e5 Ng8 5. Nf3 Nc6 6. d4 cxd4 7. Nxd4 Nxe5 8.
Bf4 d6 9. Be2 $5 {White has compensation for the pawn.} 9... Nf6 10. Qd2 a6 11.
O-O Be7 12. Rfd1 O-O 13. Rac1 Ng6 14. Bg3 Bd7 15. Nc2 Ne8 $5 16. Ne4 Bc6 17.
Nxd6 $6 (17. Qc3 {continues the pressure.}) 17... Nxd6 18. Bxd6 Bxd6 19. Qxd6
Qxd6 20. Rxd6 Nf4 $1 {Black takes the initiative.} 21. Bf1 $6 Bxg2 $1 22. Bxg2
$2 (22. Rcd1 Bf3 23. R1d2 {accepts the loss of a pawn.}) 22... Ne2+ 23. Kf1
Nxc1 24. Bxb7 Ra7 25. Bc6 Nxa2 26. b4 Rb8 27. c5 Kf8 28. Rd4 Rc7 29. Be4 Nc3
30. Bf3 a5 31. c6 Nd5 32. Bxd5 exd5 33. bxa5 Rxc6 34. Ne3 Rc5 35. Ra4 Rbb5 $1
0-1

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "6"]
[White "Ljubojevic, Ljubomir"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "B57"]
[WhiteElo "2615"]
[BlackElo "2470"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1975.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nde2 e6 8.
O-O Be7 9. Bb3 O-O 10. Bg5 Na5 11. Ng3 Qc5 ({Ribli played} 11... Qc7 {
versus Ljubojevic in Skopje 1972.}) 12. Qd2 b5 13. Rad1 Nxb3 14. cxb3 Bb7 15.
Rc1 Qb6 16. Nh5 $1 Kh8 $2 17. Bxf6 gxf6 18. Qh6 Rg8 19. Nxf6 {
White has won a pawn.} 19... Rg7 20. Rfd1 b4 21. Ne2 Qd8 22. Nh5 Rg5 23. Neg3
Bf8 24. Qf6+ Qxf6 25. Nxf6 Rc8 26. Nd7 Bg7 27. Rxc8+ Bxc8 28. Rxd6 Bxb2 29. f4
Ra5 30. Ne5 Kg7 31. Nc4 Rxa2 32. Rd8 Ba6 $2 33. Nxb2 Rxb2 34. Nh5+ $1 Kh6 35.
g4 $1 {Suddenly White has a mating attack.} 35... Rc2 36. Rg8 Rc8 37. Rg5 Bb7
38. Nf6 a5 39. Kf2 a4 40. Kg3 e5 41. Kh4 exf4 42. e5 {
Ljubojevic began to score and started a long march to the top.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "7"]
[White "Bohm, Hans"]
[Black "Makarichev, Sergey"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2300"]
[BlackElo "2440"]
[Annotator "JvR"]
[PlyCount "86"]
[EventDate "1975.??.??"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Be7 6. Nc3 O-O 7. Bg2 Ne4 8. O-O
Bf6 9. Qc2 Nxd2 10. Qxd2 d6 11. Rad1 $5 Nc6 12. e4 g6 $6 (12... fxe4 13. Nxe4 {
would have led to Gruenfeld - Spielmann, Vienna 1935.}) 13. Rfe1 Bg7 14. exf5
exf5 $6 {Makarichev makes a doubtful move after a long thought.} ({
Preferable is} 14... Rxf5) 15. Qf4 $1 h6 16. h4 Kh7 17. Nd5 Rf7 18. Qe3 Bd7 19.
b4 a5 {
Makarichev proposes a draw, but Boehm proceeds and squeezes the restraint.} 20.
a3 axb4 21. axb4 Ra4 22. Qb3 Ra7 23. c5 Rf8 24. b5 Na5 25. Qd3 Re8 $2 26. Rxe8
$1 Bxe8 27. h5 $5 dxc5 28. dxc5 c6 29. b6 $5 (29. Nc7 $1 {ends the game.})
29... Ra8 30. Nc7 Qxd3 31. Rxd3 Rb8 32. Nd2 Bf8 33. Ra3 $5 Bxc5 34. Rxa5 Bxb6
35. Re5 $1 Bf7 36. Re7 Kg7 37. Rd7 Kf6 38. hxg6 Kxg6 39. Rd6+ Kg7 40. Ne6+ Kg8
41. Bh3 Ba5 42. Bxf5 Bxd2 43. Rxd2 b5 {Hans had adjourned the move 44. Rd6. He
will win easily. So Makarichev gave up the game.   Boehm shared the lead.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "8"]
[White "Bohm, Hans"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2300"]
[BlackElo "2470"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1975.??.??"]

{When the round was about to start, I watched the players. Timman was reading
a book. His opponent Makarichev doubted, if Jan was allowed to study a chess
text. But it was The Raven by Poe.   Hans Boehm wanted another win.   } 1. d4
Nf6 2. c4 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Bd3 O-O 7. h3 a6 8. Nf3 b5 $5 9.
O-O bxc4 10. Bxc4 Nbd7 11. Rb1 Nb6 12. b3 Nfd7 13. Qc2 Ne5 14. Nxe5 Bxe5 15.
Na4 $6 (15. Bh6 Nxc4 16. bxc4 {keeps a plus.}) 15... f5 16. Nxb6 Qxb6 17. Bb2
Bxb2 18. Rxb2 fxe4 19. Qxe4 Rf7 20. Re2 Ra7 21. Rfe1 Qd8 22. Qh4 Qf8 23. Re3
Qg7 24. g4 $2 {Some moves look painful.} 24... g5 25. Qg3 Qf6 26. Re4 Kf8 27.
Kg2 a5 28. a4 Ba6 29. Re6 Bxc4 $5 (29... Qd4 {avoids any problem.}) 30. Rxf6 $5
Bxd5+ 31. Kg1 Rxf6 32. Qc3 Kg8 $6 33. Qd2 $1 Bc6 $2 {The game ends deplorably.}
({Correct is} 33... Bxb3 34. Rb1 c4) 34. Qxg5+ Kf7 35. Qh5+ Kg7 36. f4 Rb7 37.
f5 Bd5 38. Qg5+ Kf7 39. Qd2 Bxb3 40. Rb1 Kf8 41. Qxa5 {
Boehm led by half-a-point before Huebner and Jansa.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "9"]
[White "Szabo, Laszlo"]
[Black "Huebner, Robert"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2545"]
[BlackElo "2615"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1975.??.??"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. Be2 O-O 6. O-O c6 7. a4 a5 8. Be3
Ng4 9. Bg5 f6 $5 10. Bd2 Nh6 $5 {Huebner plays passively.} 11. Qc1 Nf7 12. Be3
e6 13. d5 cxd5 14. exd5 e5 15. Nd2 Nd7 16. Nc4 {Szabo has a superior position.}
16... b6 17. Qd2 f5 18. f3 Ba6 19. Na3 Bxe2 20. Qxe2 Nc5 21. Nc4 e4 $6 22. f4
$6 (22. fxe4 $1 Bxc3 23. bxc3 Nxe4 24. Bxb6 {gains a plus.}) 22... Bxc3 23.
bxc3 Rb8 24. Rfb1 Nxa4 $5 25. Rxa4 b5 26. Rxa5 bxc4 27. Rba1 Qc7 $2 (27... Rb2
$1 28. Qxc4 Rxc2 {gives counter- play timely.}) 28. Ra7 $1 Rb7 29. Rxb7 Qxb7
30. Qxc4 Qb2 31. Rc1 Rb8 32. h3 Qb7 33. Qd4 Qb2 34. Qf6 $1 Rc8 35. Rf1 $1 Kf8
36. Bd4 $1 Qb7 37. Ra1 Rc7 38. Qg7+ Ke8 39. Qg8+ Ke7 40. Ra8 {
Boehm lost and only shared the lead.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "10"]
[White "Hamann, Svend"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "E41"]
[WhiteElo "2485"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "90"]
[EventDate "1975.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 Nc6 7. O-O Bxc3 8.
bxc3 d6 9. e4 e5 10. d5 Ne7 11. Nh4 h6 12. f4 Ng6 13. Nxg6 fxg6 14. f5 Bd7 $5
15. g4 $5 g5 16. h4 Nh7 $1 ({A risk is taken by} 16... gxh4 17. g5 $1 hxg5 18.
Bxg5) 17. hxg5 Nxg5 18. Kg2 Rb8 19. a4 b6 20. Rh1 Be8 21. Qe2 a6 22. Bd2 Qf6
23. Rhb1 Rf7 24. Be3 Rfb7 25. Qd2 Bd7 26. Rh1 Be8 27. Kg3 Bf7 28. Rh2 Be8 29.
Rah1 Kf8 30. Rh5 $4 ({Correct is} 30. Bxg5 hxg5 31. Bc2) 30... Bxh5 31. Rxh5
Nf7 32. Kg2 g5 33. fxg6 Qxg6 34. Kg3 $5 Ke7 35. Qf2 Rg8 36. Qf5 Rbb8 $1 37. Be2
Rbf8 38. Qxg6 Rxg6 39. Rf5 Ng5 40. Bd3 Rfg8 41. Rf1 Nh7 42. Rb1 Rxg4+ 43. Kf3
Rg2 44. Bf2 Rh2 45. Ke3 Nf6 {
Szabo joined the lead with Huebner, Boehm and Kavalek.} 0-1

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "11"]
[White "Gheorghiu, Florin"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]
[ECO "B96"]
[WhiteElo "2540"]
[BlackElo "2615"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1975.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5
dxe5 9. fxe5 Qc7 10. exf6 Qe5+ 11. Be2 Qxg5 12. Qd3 Qxf6 13. Rf1 Qe5 14. O-O-O
Ra7 15. Nf3 Qf4+ 16. Nd2 Qc7 $5 {
He plays a novelty in the Polugaevsky Variation.} 17. Bh5 g6 18. Qd4 e5 $1 19.
Qf2 $6 ({Preferable is} 19. Qd3 $1 Be6 $1 20. Bf3) 19... Bc5 ({Not} 19... gxh5
$2 20. Nd5 Qb7 21. Nf6+ {and White wins (Krnic).}) 20. Qf6 $5 O-O $1 21. Nd5
Be7 $1 {Ljubojevic retorts magnificently.} 22. Qf3 $2 (22. Qf2 $1 Qc5 $1 {
(Krnic)} 23. Qxc5 Bxc5 24. Ne4 Nd7 {favours Black.}) 22... Bb7 $1 23. Nxe7+
Qxe7 24. Qf2 Bd5 $1 25. Bf3 Bxa2 26. Ne4 Rc7 27. Qb6 Rfc8 28. Nf6+ $2 Qxf6 $1 {
Gheorghiu experienced his first defeat in this tournament.   Boehm could
recapture the sole lead after Kavalek blundered in their game.} 0-1

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "12"]
[White "Bohm, Hans"]
[Black "Raicevic, Vladimir"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2300"]
[BlackElo "2440"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1975.??.??"]

1. d4 d5 2. Nf3 Nf6 3. c3 c6 4. Bg5 Bf5 5. e3 Nbd7 6. Nbd2 h6 7. Bh4 e6 8. Ne5
$5 Nxe5 9. dxe5 g5 $1 10. Bg3 Nd7 11. Nb3 Qb6 12. Bd3 Bxd3 13. Qxd3 Bg7 14. f4
c5 15. c4 Qb4+ 16. Nd2 $1 Nb6 $1 {Capture on b3 would be less solid.} 17. cxd5
Nxd5 18. O-O O-O-O 19. Ne4 $5 gxf4 20. exf4 Qxb2 21. Rab1 $1 Qd4+ 22. Qxd4 cxd4
23. Nd6+ Rxd6 $1 24. exd6 f5 $2 ({Better is} 24... Rd8 $1 25. f5 e5 {(Boehm).})
25. d7+ $1 Kc7 26. Bh4 b6 27. d8=Q+ Rxd8 28. Bxd8+ Kxd8 {
Black has lost another exchange.} 29. Rf3 Kd7 30. Kf1 Kd6 31. Re1 Bf6 32. Ke2
$1 a5 33. a4 $5 Nc3+ 34. Rxc3 $5 (34. Kd2 Nxa4 35. Rh3 Nc5 36. Rxh6 {
also brings a hard ending.}) 34... dxc3 35. Kd3 Kd5 36. Re3 $1 h5 37. Rh3 h4
38. g3 $1 {Donner thinks that Boehm has spoiled the game.} 38... Kc5 $6 ({
The critical line is} 38... hxg3 $1 39. Rxg3 $1 e5 40. fxe5 Bxe5 41. Rg2 {
(Boehm)} 41... Kc5 (41... f4 42. h3 $1) 42. h4 Kb4 43. Rg6 $1 {
and the h-pawn decides the game. So the surprising play by White is okay.}) 39.
gxh4 Kb4 40. Re3 $1 Kb3 41. Rxe6 b5 $5 42. Rxf6 b4 43. Rc6 {
Boehm led by one point on the pack.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "13"]
[White "Timman, Jan"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]
[ECO "A65"]
[WhiteElo "2510"]
[BlackElo "2615"]
[Annotator "JvR"]
[PlyCount "50"]
[EventDate "1975.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 g6 6. e4 d6 7. Bd3 Bg7 8. Nge2
O-O 9. O-O a6 10. a4 Qc7 11. h3 Nbd7 12. f4 Rb8 13. Be3 Re8 14. Ng3 c4 15. Bc2
Nc5 16. Bd4 b5 17. axb5 axb5 18. e5 dxe5 $5 (18... Nfd7 {
was played in Paradella - Letelier Martner, Mar del Plata 1973.}) 19. fxe5 Rxe5
20. Qf3 Rg5 21. Nge4 $2 {The theoretical duel in the Ben-Oni has a sudden end.}
({Correct is} 21. Nge2 $1 Nh5 22. d6 Qd7 {(Tomaszewski - Panczyk, Bytom 1986).}
) 21... Ncxe4 $1 22. Bxe4 Ng4 $1 {Black threatens to deliver mate or capture
bishop d4. White has no proper defence.} 23. d6 $5 Bxd4+ 24. Kh1 Qxd6 25. Qxf7+
Kh8 {A tragedy had begun for Boehm. He lost to Gheorghiu but still led by
half-a-point on Ljubojevic and four others.} 0-1

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "14"]
[White "Ljubojevic, Ljubomir"]
[Black "Razuvaev, Yuri"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2615"]
[BlackElo "2515"]
[Annotator "JvR"]
[PlyCount "103"]
[EventDate "1975.??.??"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. Nd2 Bxe5 8.
dxe5 Nc5 9. Nb3 Nxd3 10. Qxd3 Nc6 11. f4 f6 12. exf6 Qxf6 $5 ({The prudent} 
12... Rxf6 {was played in Matulovic - Toth, Budapest 1972.}) 13. Qxd5+ Be6 14.
Qc5 Rad8 15. Bd2 $1 {White lifts the pressure temporarily.} 15... Qxb2 $5 16.
Bc3 Qxc2 17. Bxg7 Qxc5+ 18. Nxc5 Rfe8 $1 19. Bc3 Rd5 $4 {
Razuvaev makes an elementary mistake.} ({Correct is} 19... Bc8) 20. Ne4 $1 Rf8
21. Nf6+ Rxf6 22. Bxf6 Kf7 23. Bb2 Nb4 24. f5 $5 Rxf5 25. Rac1 c6 26. Rxf5+
Bxf5 27. Rc4 Nd3 28. Bd4 Ke6 $5 29. Bxa7 c5 30. Bxc5 Kd5 31. Rh4 $1 Nxc5 32.
Rh5 Ke6 33. g4 $1 Bxg4 34. Rxc5 Bf3 35. Kf2 Kd6 36. Rc3 Bd5 37. a3 Be4 38. Ke3
Bg6 39. Kd4 b6 40. h4 Bh5 41. Rc2 Bd1 42. Rc1 Bg4 43. Rg1 Be2 44. Rg7 h5 45.
Rg6+ Kc7 46. Ke3 Bd1 47. Rg1 Ba4 48. Kf4 Bb5 49. Re1 Bd7 50. Re7 Kd6 51. Rxd7+
$1 Kxd7 52. Kg5 {Boehm drew. So Ljubojevic caught up.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "14"]
[White "Smejkal, Jan"]
[Black "Timman, Jan"]
[Result "1-0"]
[ECO "C93"]
[WhiteElo "2600"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1975.??.??"]

1. Nf3 Nc6 2. e4 e5 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 h6 10. d4 Re8 11. Nbd2 Bf8 12. Nf1 Bd7 13. Ng3 Na5 14. Bc2 c5 15. b3
Nc6 16. d5 Ne7 17. Be3 Kh8 18. b4 Nc8 19. a4 Nb6 20. axb5 axb5 21. Bd3 Qc7 22.
Qe2 Rxa1 23. Rxa1 Nbxd5 $1 24. exd5 e4 25. Nxe4 Nxe4 26. Bxe4 Rxe4 27. Ra8 Be8
28. Qd3 Qb7 29. Rd8 Qe7 30. Rc8 cxb4 31. cxb4 Rxb4 32. Nd4 Kg8 33. Rb8 Rc4 34.
Nf5 $5 Qd7 {So far, no great events have passed in the Ruy Lopez.} 35. Bd4 $5 (
35. Nd4 {will draw quietly.}) 35... g6 $4 {
Black opens a diagonal and will endure an attack on the king.} ({Solid is} 
35... f6) 36. Ne3 $1 Rc8 37. Ng4 $1 Be7 38. Rxc8 $6 (38. Qe3 $1 Bg5 39. Rxc8 $1
Qxc8 40. Nxh6+ Bxh6 41. Qxh6 {wins quickly.}) 38... Qxc8 39. Qe3 $1 Qd8 40.
Qxh6 f6 41. h4 $1 Bf8 42. Qf4 f5 43. Nf6+ Kf7 44. h5 Qc8 45. Qg5 gxh5 46. Nh7 {
Smejkal joined Boehm and Ljubojevic at the end of the penultimate round.} 1-0

[Event "IBM Amsterdam"]
[Site "15"]
[Date "1975.??.??"]
[Round "15"]
[White "Huebner, Robert"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]
[ECO "A33"]
[WhiteElo "2615"]
[BlackElo "2615"]
[Annotator "JvR"]
[PlyCount "44"]
[EventDate "1975.??.??"]

{Many journalists photographed the leaders.} 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4.
d4 cxd4 5. Nxd4 Nc6 6. Ndb5 Bc5 7. a3 O-O 8. b4 Be7 9. Nd6 Ne8 10. Bf4 b6 11.
e4 Nxd6 12. Bxd6 Bxd6 13. Qxd6 Qf6 14. Rc1 Ne5 15. Be2 Bb7 16. O-O Rfc8 17.
Rfd1 g5 $6 18. Qd4 Bc6 19. a4 d6 $5 20. Ra1 $1 (20. Qxd6 $6 Rd8 21. Qc7 Rdc8 {
draws.}) 20... Kg7 21. a5 $1 Be8 {Huebner refuses a draw and blunders.} 22. g3
$4 (22. axb6 $1 axb6 23. Rxa8 Rxa8 24. Qxb6 Nxc4 25. Bxc4 Qxc3 26. Bf1 {
has exchanged towards a favourable position.}) 22... Rxc4 $1 {He could try 23.
Qe3! but Huebner was disgusted   Ljubojevic had won by 91/2/15, just before
Boehm, Makarichev, Smejkal and Szabo.  600 players partook in an event of 500,
000 Guilders.} 0-1

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "3"]
[White "Langeweg, Kick"]
[Black "Miles, Anthony"]
[Result "0-1"]
[ECO "A32"]
[WhiteElo "2450"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1976.??.??"]

{AMSTERDAM 1976  Many star players could not participate in vii 1976 due to
the interzonal events. Still the IBM tournament became spectacular by the
defection of Kortschnoj.   } 1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 Be7 5. Bg2 a6
6. d4 cxd4 7. Nxd4 Qc7 8. b3 $5 d5 $1 9. O-O $1 dxc4 10. bxc4 O-O $1 (10...
Qxc4 11. Bg5 $1 O-O 12. Rc1 $1 {leaves the initiative to White.}) 11. Qb3 Nbd7
12. Na4 Nc5 13. Nxc5 Bxc5 14. Qc3 Bd7 15. Bb2 Rfc8 16. Rac1 Bf8 17. Qb3 Rab8
18. Nf3 Ne4 19. Qc2 Nc5 20. Ng5 f5 21. Nf3 $6 (21. f4 $1 {
gains enough compensation for the isolated c-pawn.}) 21... Bc6 22. Ne5 $5 Bxg2
23. Kxg2 Rd8 {Black is better.} 24. Rfd1 Be7 25. Nd3 Rbc8 26. Nxc5 Qxc5 27. Qb3
Qc6+ 28. f3 Bg5 29. Qc3 Bf6 30. Qb3 Rxd1 31. Rxd1 Qxc4 32. Bxf6 $2 {
White allows a mating attack.} ({Better is} 32. Qxc4 Rxc4 33. Bxf6 gxf6 34.
Rd8+) 32... Qxe2+ $1 33. Kh3 Rc2 $1 34. Rd8+ Kf7 35. Qxb7+ Kxf6 {
A competition between Kortschnoj and Miles for the first place had begun.} 0-1

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "4"]
[White "Miles, Anthony"]
[Black "Kurajica, Bojan"]
[Result "1-0"]
[ECO "E07"]
[WhiteElo "2510"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "77"]
[EventDate "1976.??.??"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O c6 7. Nc3 Nbd7 8. b3
b6 9. Bb2 Ba6 10. Qd3 Rc8 11. Rac1 Ne8 $5 12. Nb1 Nd6 13. Nbd2 f5 14. Ba3 Ne4
15. Bxe7 Qxe7 16. e3 e5 17. dxe5 Nxe5 18. Nxe5 Qxe5 19. Rfd1 Qe7 20. Qc2 Rce8
21. Nxe4 dxe4 22. Rd2 Rd8 23. Rcd1 c5 24. Qc3 Bb7 25. Bf1 Rxd2 26. Qxd2 h5 27.
Be2 g6 28. a4 Kg7 29. a5 Rf7 30. Kf1 Qf6 31. b4 Bc8 32. axb6 axb6 33. bxc5 bxc5
34. Qa5 Qc6 35. Rd5 Rc7 36. Kg2 Bd7 $2 {
Another opponent blunders near the time control.} ({Right is} 36... Be6 $1 37.
Rd8 Rc8) 37. Bd1 $1 h4 $2 (37... Rc8 $5 38. Qa7 $1 Rc7 39. Qa1+ $1 Qf6 40. Qa5
$1 Qc6 $2 41. Ba4 $1 {leads to the game.}) 38. Ba4 $1 Qb7 39. Qxc7 $1 {
Kurajica loses all.} 1-0

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "6"]
[White "Kortschnoj, Viktor"]
[Black "Donner, Jan Hein"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2670"]
[BlackElo "2475"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1976.??.??"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. Ne2 Be7 5. c4 O-O 6. Nbc3 c6 7. Be3 a6 8. d5 $5
{Kortschnoj avoids the potential exchange of queens.} 8... cxd5 9. cxd5 Ne8 10.
Qd2 Nd7 $2 ({Right is} 10... f5 11. exf5 Bxf5) 11. Ng3 g6 12. Be2 Ng7 13. O-O
b5 14. b4 f5 15. exf5 gxf5 16. f4 Bf6 17. Rad1 $6 {White wastes time.} 17...
exf4 $2 {Black should close the position.} (17... e4 $1 {
offers serious resistance.}) 18. Bxf4 Ne5 19. Bh6 Ng4 20. Bxg4 fxg4 21. Nce4
Be5 22. Rxf8+ Qxf8 23. Rf1 Qe7 24. Bf4 Bxf4 25. Qxf4 Bd7 26. Nf6+ ({
Kortschnoj has planned} 26. Nf6+ Kh8 27. Nxd7 Qxd7 28. Qf8+ Rxf8 29. Rxf8#) 1-0

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "7"]
[White "Langeweg, Kick"]
[Black "Kortschnoj, Viktor"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "2450"]
[BlackElo "2670"]
[Annotator "JvR"]
[PlyCount "56"]
[EventDate "1976.??.??"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3 6. Qxc3 b6 7. g3 Bb7 8.
Bg2 d5 9. d4 dxc4 10. Qxc4 Bd5 11. Qc3 Nbd7 $5 ({Kortschnoj did} 11... Nc6 {
versus Vaganian in Moscow 1975.}) 12. b4 a5 13. b5 c6 14. bxc6 Rc8 15. O-O Rxc6
16. Qe3 Qa8 17. Bd2 b5 18. Rfb1 Rb8 19. Ne1 $6 Bxg2 20. Nxg2 Ne4 $5 21. Qd3 $6
({Better is} 21. Bxa5 $1 Nxf2 22. Qxf2 Qxa5) 21... Rd6 22. Be3 Ne5 23. Qc2 Rc8
24. Qb3 Nc4 25. Rc1 Rdc6 26. Qxb5 Nxa3 $1 27. Qa4 $2 ({Right is} 27. Qh5 $1)
27... Nc2 28. Rab1 Rc4 $1 {A winner has to defeat the Dutchmen.} 0-1

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "8"]
[White "Miles, Anthony"]
[Black "Velimirovic, Dragoljub"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2510"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1976.??.??"]

1. Nf3 Nf6 2. c4 c5 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Bb4 6. g3 O-O 7. Bg2 Bxc3+ 8.
bxc3 Qa5 9. Qb3 Nc6 10. O-O Re8 $6 ({More active is} 10... Qh5) 11. Nb5 d5 12.
Qa3 Bd7 $6 (12... Re7 {avoids the loss of an exchange.}) 13. Qxa5 Nxa5 14. Nc7
Nxc4 15. Bg5 Rac8 16. Nxe8 Nxe8 17. e4 h6 18. Bc1 Nf6 19. exd5 Nxd5 20. Bxd5
exd5 21. Re1 Be6 22. Be3 b6 23. f3 $2 ({Right is} 23. Bd4 $1) 23... Ne5 $1 24.
Rec1 Nxf3+ 25. Kg2 Ne5 26. Bd4 Nc6 27. Kf3 Bf5 28. g4 Bg6 29. Kf4 Na5 30. Re1
Be4 31. h4 Rc4 32. Rad1 Ra4 33. Rd2 Nc4 34. Rf2 Nd6 35. Ke5 Nb5 36. g5 h5 37.
Ref1 Bd3 38. Rg1 Bc4 39. g6 $5 {The players fight for the initiative. Miles
makes a winning attempt before the time control.} 39... f6+ $5 (39... fxg6 {
draws.}) 40. Ke6 $1 Nxc3 $4 (40... Ra3 41. Re1 Bd3 42. Bxf6 $1 gxf6 43. Kxf6
Nd6 44. Ke7 Nf5+ 45. Kf6 Nd6 {leads to a repetition of positions.}) 41. Bxc3
d4+ 42. Ke7 $1 ({Elementary is} 42. Ke7 dxc3 43. Rd1 $1 {
and White threatens mate.}) 1-0

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "10"]
[White "Kortschnoj, Viktor"]
[Black "Ligterink, Gert"]
[Result "1-0"]
[ECO "E70"]
[WhiteElo "2670"]
[BlackElo "2400"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1976.??.??"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. Bd3 Nc6 6. Nge2 e5 7. d5 Nd4 $5 {
Ligterink plays an aggressive novelty.} ({Known is the prudent.} 7... Ne7) 8.
Nxd4 exd4 9. Nb5 $5 {Kortschnoj responds in style.} 9... O-O 10. O-O Re8 11.
Re1 Ng4 12. h3 c6 $5 ({Usual will become} 12... a6 $1) 13. dxc6 $1 bxc6 14.
hxg4 cxb5 15. cxb5 Qh4 16. Be2 Be5 $1 (16... d5 $5 {
will be played in Olafsson - Mortensen, Espoo 1989.}) 17. f4 {
Black has a positional plus.} 17... d3 $2 ({Correct is} 17... Bg7 $1 18. Bf3
Rb8) 18. Bf3 Bd4+ 19. Be3 Bxb2 20. Rb1 Bc3 21. Bf2 $1 Qe7 ({Or} 21... Qf6 22.
e5 $1 Qxf4 23. Re4 $1 Qd2 24. Qxd2 Bxd2 25. exd6) 22. Re3 Bd4 23. Rxd3 Bxf2+
24. Kxf2 Bb7 25. Rd4 Rac8 26. Qd2 Rc5 27. Kg3 Qc7 28. Rxd6 Bxe4 29. Rd7 Qb6 30.
Re1 Rc4 31. Rxe4 Rcxe4 32. Bxe4 Rxe4 33. Rd8+ Kg7 34. Qc3+ f6 35. Rd7+ Kf8 36.
Qa3+ Ke8 37. Qxa7 Qxb5 38. Rxh7 {Walking through the RAI, I saw my hero Euwe
with Viktor and Bela Kortschnoj. When they looked disturbed, I moved on.} 1-0

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "12"]
[White "Kortschnoj, Viktor"]
[Black "Bohm, Hans"]
[Result "1-0"]
[ECO "D55"]
[WhiteElo "2670"]
[BlackElo "2425"]
[Annotator "JvR"]
[PlyCount "119"]
[EventDate "1976.??.??"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 O-O 6. e3 Ne4 7. Bxe7 Qxe7 8.
Rc1 Nc6 9. Qb3 $5 Na5 10. Qa4 b6 $2 ({Kortschnoj prefers} 10... Nxc4 11. Bxc4
Nxc3 12. Rxc3 dxc4 13. Qxc4 c6) 11. cxd5 Nxc3 12. Rxc3 exd5 13. Bd3 c6 14. O-O
Bd7 15. Ne5 Be8 16. b4 f6 17. bxa5 fxe5 18. axb6 c5 19. Qa3 Qb7 20. Qxc5 e4 21.
Bc2 axb6 22. Qd6 Bb5 23. Rc7 $1 Qxc7 $1 24. Qxc7 Bxf1 25. Bb3 Bc4 26. Qxb6 Ra6
27. Qb7 Rf7 28. Qc8+ Rf8 29. Qxc4 $5 dxc4 30. Bxc4+ Rf7 31. Bxa6 Rc7 32. g4 $2
(32. f3 $1 {advances in the central area timely.}) 32... Kf7 33. a4 g5 34. Kg2
h6 35. h3 Ke6 36. Kf1 Kd6 37. Ke1 Kc6 38. Ke2 Kb6 39. Bb5 Rc2+ 40. Kf1 Rc1+ 41.
Kg2 Rc7 42. Kg3 Rf7 $2 (42... Rc1 $1 43. Be8 Rg1+ 44. Kh2 Ra1 45. Bg6 Rxa4 46.
Bxe4 Ra2 47. Kg3 Kc7 {will be hard to win for White.}) 43. Bc4 Rf3+ 44. Kg2 Kc6
(44... Ka5 $5 45. Bd5 $1 Kxa4 46. Bxe4 {gives White an extra advantage in time.
}) 45. a5 Rf8 46. a6 Kd6 47. Be2 Rb8 48. f3 Rb2 49. Kf2 exf3 50. Kxf3 Kd5 51.
Bd3 Ra2 52. Be4+ Kd6 53. Bb7 Kc7 54. Ke4 Ra4 55. Kf5 Ra3 56. d5 Rxe3 57. d6+
Kb6 58. d7 Rd3 59. Ke6 Kc7 60. Bd5 {
Boehm could not repeat his success of the previous year.} 1-0

[Event "IBM Amsterdam"]
[Site "16"]
[Date "1976.??.??"]
[Round "15"]
[White "Miles, Anthony"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2510"]
[BlackElo "2420"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1976.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bd3 O-O 8.
Nc3 Nxe5 9. Rxe5 Re8 ({Preferable is} 9... Bf6 {
(Steinitz - Zukertort, USA 1886).}) 10. b3 Bf8 $5 ({Known is} 10... Bf6 {
(Geller - Panno, Varna 1962).}) 11. Re3 b6 12. Bb2 Bb7 13. Qg4 g6 14. Nd5 Bg7
15. Bxg7 Kxg7 16. Qd4+ f6 17. Rxe8 Nxe8 18. Re1 Bxd5 19. Qxd5 Nd6 20. Re3 Qf8
21. Qd4 Qf7 22. c4 Re8 23. b4 Rxe3 24. dxe3 Qe6 25. g3 Qe5 26. c5 bxc5 27. bxc5
Qxd4 28. exd4 Nf7 29. Kf1 Ng5 30. Ke2 Ne6 31. Ke3 f5 32. Bc2 Kf6 33. h4 h6 {
Ree has been defending well.} 34. Kd3 d6 $6 ({More prudent is} 34... g5 $1) 35.
Kc4 $1 g5 $2 (35... dxc5 $1 36. dxc5 c6 $1 {
creates a new defence line (Marjanovic).}) 36. hxg5+ hxg5 37. cxd6 cxd6 38. Kd5
f4 39. Bd1 fxg3 40. fxg3 Ke7 41. Bg4 Nd8 42. Bc8 a5 43. a4 Nf7 44. Kc6 d5 45.
Kxd5 {Kortschnoj and Miles won by 91/2/15.   The reason for the conversation
of Max with Viktor and Bela became clear. Viktor went into hiding and got
asylum in the Netherlands during that period.} 1-0

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "1"]
[White "Panno, Oscar"]
[Black "Timman, Jan"]
[Result "1-0"]
[ECO "E17"]
[WhiteElo "2550"]
[BlackElo "2590"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1977.??.??"]

{AMSTERDAM 1977  Miles returned to Amsterdam from vi - vii 1977. He competed
with the little known Hulak for the triumph.   } 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7
4. O-O e6 5. c4 Be7 6. Nc3 O-O 7. Re1 d5 8. cxd5 exd5 9. d4 c5 10. Bg5 $5 Nbd7
11. Rc1 Re8 12. Rc2 $5 Ne4 $1 13. Bxe7 Qxe7 14. dxc5 Nxc3 15. Rxc3 bxc5 16. Re3
$5 Qf6 17. Rxe8+ Rxe8 18. Qa4 Bc6 19. Qa6 $1 Nb6 20. b3 Qc3 $5 21. Qa3 Nd7 22.
e3 a5 23. Rc1 $1 {
Panno has kept the equality by cautious play against Timman's aggression.}
23... Qb4 $2 ({Correct is} 23... Qf6 $1 24. Ne1 $1 {(Minev)} 24... a4 $1 25.
Nd3 axb3 26. axb3 Ra8) 24. Qxb4 axb4 25. Bh3 $1 Ra8 26. Bxd7 Bxd7 27. Rxc5 h6
28. Nd4 Rxa2 29. Kg2 $1 Ra7 30. Rxd5 Rc7 31. Rd6 Bc8 32. Rb6 Rb7 33. Rxb7 Bxb7+
34. f3 Kf8 35. e4 $1 Ke7 $6 (35... Bc8 $1 {prolongs the game.}) 36. Nc2 $1 Kd6
37. Nxb4 Kc5 38. Nc2 Bc8 39. Kf2 Be6 40. b4+ Kc4 41. Ke3 Bd7 42. h4 h5 43. Kf4
Ba4 44. Ne3+ Kxb4 45. Nf5 ({Notice} 45. Nf5 g6 46. Nh6 Be8 47. Ke5) 1-0

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "2"]
[White "Ree, Hans"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "A54"]
[WhiteElo "2460"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1977.??.??"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 e5 5. Bg5 Be7 6. e3 O-O 7. Qc2 Ne8 8.
Bxe7 Qxe7 9. Bd3 Nef6 $1 (9... g6 {
happened in Cafure - Schweber, Buenos Aires 1965.}) 10. O-O Re8 11. dxe5 dxe5
12. Ng5 g6 13. Rfd1 c6 14. a3 a5 15. Rab1 Nc5 16. b4 axb4 17. axb4 Nxd3 18.
Rxd3 $6 ({More solid is} 18. Qxd3 e4 19. Qd6) 18... e4 $1 19. Rd4 Bf5 20. c5 h6
21. Nh3 Bxh3 22. gxh3 Qe5 23. Ne2 Qf5 24. Rd6 Nh7 25. Nf4 $2 (25. Ng3 $1 Qxh3
26. Nxe4 Re5 27. Ng3 Ng5 28. Qe2 Ra2 $1 29. Rxg6+ $1 Kf8 $1 30. Rxg5 Rxe2 31.
Rxe5 {defends suitably.}) 25... Ng5 26. Kg2 Nxh3 $1 27. Nxh3 Qf3+ 28. Kg1 Qxh3
29. Qb2 Qg4+ 30. Kf1 Qh5 31. Qf6 Qxh2 32. Rbd1 Ra2 33. R1d2 Ra1+ 34. Rd1 Ra2
35. R1d2 Rxd2 36. Rxd2 Qh3+ 37. Ke1 Qc8 38. Rd6 h5 39. Qg5 Qg4 40. Qf6 h4 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "3"]
[White "Quinteros, Miguel"]
[Black "Liberzon, Vladimir"]
[Result "0-1"]
[ECO "B89"]
[WhiteElo "2555"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "87"]
[EventDate "1977.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Be3 Nf6 7. Bc4 a6 8. Qe2
Qc7 9. Bb3 Be7 10. O-O-O O-O 11. f4 b5 {White has to find a new move.} 12. Rhf1
$6 (12. Nxc6 $1 Qxc6 13. Rd4 {would be a wiser novelty.}) 12... Na5 $1 13. f5
$6 b4 $1 14. Na4 e5 15. Nf3 Nxb3+ 16. axb3 Bb7 17. Nb6 Rab8 18. Nd5 Nxd5 19.
exd5 Qa5 20. Nd2 $1 Qxd5 $2 (20... Bxd5 {wins without problems.}) 21. Nc4 $1
Qxg2 22. Qxg2 Bxg2 23. f6 $1 Bxf1 24. fxe7 Rfe8 25. Rxf1 Rxe7 26. Nxd6 Re6 27.
Bc5 f6 28. c4 $2 bxc3 $1 29. bxc3 Rxb3 30. Kc2 Rb8 31. c4 e4 32. Ba3 a5 33. c5
a4 34. Re1 Rb3 35. Rxe4 Rxe4 36. Nxe4 Kf7 37. c6 Rb6 38. Nd6+ Ke6 39. Kd3 Rxc6
40. Nb5 Rc8 41. Nc3 Kf5 42. Bb4 Ra8 43. Kc4 Kg4 44. Bd6 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "4"]
[White "Torre, Eugenio"]
[Black "Miles, Anthony"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2550"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "88"]
[EventDate "1977.??.??"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Ba4 e6 5. O-O Nge7 6. c3 d5 7. d3 Bd7 8. Re1
g6 9. exd5 Nxd5 10. d4 cxd4 11. Nxd4 Bg7 $6 ({Better is} 11... O-O-O $1) 12.
Nxe6 $1 {Torre wins a pawn.} 12... Bxe6 13. Qxd5 O-O 14. Qb5 Qc7 15. Bb3 Bf5
16. Qc5 Rfe8 17. Rxe8+ $2 ({Preferable is} 17. Be3 $1 {(Miles).}) 17... Rxe8
18. Be3 Re5 19. Qc4 Bh6 20. Na3 Bxe3 21. fxe3 Rxe3 22. Nb5 Qe7 23. Rf1 Re4 24.
Nd4 Nxd4 25. cxd4 Qd7 26. Rd1 Be6 27. Qd3 Bxb3 28. axb3 Qf5 29. Rf1 Qd5 30. Rd1
Rg4 31. Rd2 Qe4 32. Qxe4 Rxe4 33. d5 $2 ({White should have tried} 33. Kf2 $1
Kf8 34. Kf3 {with drawing chances.}) 33... Kf8 34. d6 Ke8 35. Rc2 Rb4 36. Rc7
Rxb3 37. Re7+ Kf8 38. Rc7 Ke8 39. Re7+ Kd8 40. Kf2 a5 41. Rxf7 a4 42. Rxh7
Rxb2+ 43. Kf3 a3 44. h4 Rb6 {Miles became inspired by this lucky win.} 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "5"]
[White "Miles, Anthony"]
[Black "Reshevsky, Samuel"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2555"]
[BlackElo "2490"]
[Annotator "JvR"]
[PlyCount "101"]
[EventDate "1977.??.??"]

1. e4 c5 2. f4 Nc6 3. Nf3 e6 4. Bb5 Nge7 5. O-O a6 6. Be2 g6 7. d3 Bg7 8. c3
O-O 9. Be3 b6 10. d4 f5 11. e5 Nd5 12. Bd2 cxd4 13. Nxd4 Nxd4 14. cxd4 d6 $5
15. Nc3 dxe5 16. dxe5 Bb7 17. Bf3 Rf7 18. Nxd5 Bxd5 19. Bxd5 Qxd5 20. Be3 Qe4
$2 {There is no need to ruin the black pawn structure.} 21. Bxb6 g5 22. Qd6 Re8
23. Rac1 gxf4 24. Rfe1 Qb7 25. Qc6 Rb8 26. Bd4 Rd8 27. Qxb7 Rxb7 28. Rc4 Kf7
29. Bc3 Bh6 30. Rc6 Ra7 31. Kf2 Rd3 32. Rd6 Rd7 $2 {Black could have drawn.} ({
Correct is} 32... Rxd6 $1 33. exd6 Rd7 34. Be5 Bf8 35. Rd1 Bg7 36. Bxg7 Kxg7
37. b4 Kf6 38. a4 e5 $1) 33. Rxa6 Bf8 34. Ra5 Be7 35. Rf1 Bh4+ 36. Kg1 Rd1 37.
Ra4 Rxf1+ 38. Kxf1 Rd1+ 39. Ke2 Rg1 40. g3 $1 Bg5 41. gxf4 Bh4 42. Kd3 Rh1 43.
Rb4 Rxh2 44. a4 Rh1 45. a5 Rd1+ 46. Kc2 Rd7 47. a6 Bf2 48. Rb7 Ke8 49. b4 Ba7
50. Rxd7 Kxd7 51. Kd3 {
Miles drank a lot of milk. Maybe it gave him <->a white motor' during the game.
} 1-0

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "6"]
[White "Timman, Jan"]
[Black "Liberzon, Vladimir"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2590"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "120"]
[EventDate "1977.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O d6 7. Qe2 Be7 8. b3
Bd7 9. Bb2 Nc6 10. Nd2 O-O 11. Kh1 Nxd4 12. Bxd4 e5 13. Bb2 Be6 14. Nc4 Nd7 15.
a4 Qc7 16. a5 Rad8 17. Ne3 Nc5 18. f4 exf4 19. Nf5 Bxf5 20. exf5 Nxd3 21. f6 $2
({Correct is} 21. Qxd3 {(Liberzon).}) 21... Ne5 22. fxe7 Qxe7 23. Rxf4 f6 24.
h3 Rfe8 25. Raa4 d5 26. Bxe5 Qxe5 27. Qd2 Qe1+ 28. Qxe1 Rxe1+ 29. Kh2 Re2 30.
c4 d4 31. c5 d3 32. Rad4 Ree8 33. Rd6 Rxd6 34. cxd6 Rd8 35. Rd4 Kf7 36. Rxd3
Ke6 37. Rd4 Rd7 38. Kg3 Ke5 39. Rb4 Kxd6 40. Rb6+ Kc7 41. Re6 Kd8 42. Rb6 Re7
43. Kf4 Kc7 44. Rb4 Re5 45. Rc4+ Kd6 46. b4 h5 47. h4 g5+ 48. Kf3 Rf5+ 49. Ke3
Rb5 50. Rd4+ $5 (50. Ke2 $1 {tries to avoid zugzwang.}) 50... Ke6 51. Rc4 Re5+
52. Kf3 Rf5+ 53. Ke3 Kd6 $1 {White has to make a fatal move.} 54. Rd4+ ({Or} 
54. Kd3 $1 gxh4 $1 55. Rxh4 Rg5 56. Rh3 Kc6 $1 {
and White cannot guard his pawns.}) 54... Kc6 55. Re4 Kb5 56. g4 hxg4 57. Rxg4
gxh4 58. Rxh4 Ka4 59. Kd3 Kb3 60. Rh1 Rd5+ 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "8"]
[White "Reshevsky, Samuel"]
[Black "Liberzon, Vladimir"]
[Result "0-1"]
[ECO "B69"]
[WhiteElo "2490"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "78"]
[EventDate "1977.??.??"]

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. Bxf6 gxf6 12. Bd3 b4 13. Ne2 Qa5 14. Kb1 Qc5
15. Rc1 a5 16. c3 Qb6 17. Nfd4 bxc3 18. Qxc3 Nxd4 19. Qxd4 Bd8 20. f5 Qxd4 21.
Nxd4 Bb6 22. Nc6 Bc5 23. Bb5 Rg8 24. fxe6 fxe6 25. g3 Rg5 26. a4 Kf7 27. Rhd1
Bxc6 28. Bxc6 Rb8 29. Bb5 h5 30. Rf1 h4 31. gxh4 Rh5 32. Be2 $2 Rxh4 33. e5 f5
$1 {Black has won a pawn.} 34. exd6 Bxd6 35. Bc4 Kf6 36. Rfe1 Be5 37. Rc2 Rb6
38. h3 Bd4 39. Rd2 Bc3 {Liberzon competed for the first place.} 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "9"]
[White "Adorjan, Andras"]
[Black "Hulak, Krunoslav"]
[Result "0-1"]
[ECO "B87"]
[WhiteElo "2530"]
[BlackElo "2525"]
[Annotator "JvR"]
[PlyCount "62"]
[EventDate "1977.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. O-O
Be7 9. f4 O-O 10. e5 dxe5 11. fxe5 Nfd7 12. Qh5 Nc6 13. Nxc6 Qb6+ 14. Kh1 Qxc6
15. Rf3 Bb7 16. Bf4 Nc5 17. Rg3 b4 18. Bh6 $2 ({Correct is} 18. Rg1 $5 {
(Levy - Bleiman, Netanya 1976).}) 18... g6 $1 19. Bxf8 Bxf8 20. Nd1 Ne4 21. Rg4
Bg7 22. Qh4 Bxe5 23. Ne3 h5 $2 {They miss a combination.} 24. Qxh5 $2 ({
Right is} 24. Ba4 $1 Qxa4 25. Rxe4 $1) 24... Nf2+ 25. Kg1 Nxg4 26. Qxg4 Bxb2
27. Rd1 Qe4 28. Qxe4 Bxe4 29. Rd7 Rc8 30. Nc4 Bc6 31. Rxf7 $2 Bd4+ $1 {
Miles and Hulak started to fight for the lead in the tournament.} (31... Bd4+
32. Kf1 Kxf7 33. Nd6+ Ke7 34. Nxc8+ Kd7 {costs the knight.}) 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "10"]
[White "Reshevsky, Samuel"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2490"]
[BlackElo "2590"]
[Annotator "JvR"]
[PlyCount "84"]
[EventDate "1977.??.??"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bc5 5. d3 h6 6. Bg2 d6 7. O-O a6 8. e3 O-O
9. h3 Bf5 10. Nd5 Ba7 11. e4 Bh7 12. Nxf6+ Qxf6 13. Be3 Bxe3 14. fxe3 Qe7 15.
Qe2 a5 16. Nd2 Nb4 17. Nb1 f5 18. Nc3 fxe4 19. Rxf8+ Rxf8 20. Bxe4 Bxe4 21.
dxe4 $6 Qg5 22. Kg2 h5 23. h4 Qg4 24. Re1 $6 (24. Qxg4 hxg4 25. Rf1 {
would be alright.}) 24... Nc2 $6 25. Qxc2 Rf3 26. Ne2 Rxe3 27. c5 $6 dxc5 28.
Qc4+ Kh7 29. Qf7 $4 (29. Kg1 $1 a4 30. Qf7 Rxe2 31. Rxe2 Qxe2 32. Qf5+ {
brings perpetual check.}) 29... Rxe2+ 30. Rxe2 Qxe2+ 31. Kg1 Qe1+ 32. Kh2 Qe2+
33. Kg1 Qg4 34. Kf2 Qg6 35. Qxc7 Qxe4 36. Qxc5 Qd4+ 37. Qxd4 exd4 38. Kf3 g5
39. Ke4 Kg6 40. a4 d3 41. Kxd3 gxh4 42. gxh4 Kf5 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "11"]
[White "Miles, Anthony"]
[Black "Panno, Oscar"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2555"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "99"]
[EventDate "1977.??.??"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Nc3 Nf6 5. Be2 O-O 6. O-O c6 7. a4 a5 8. Re1
Na6 9. Bf1 Nb4 10. Nb1 Bg4 11. Nbd2 e5 12. c3 Na6 13. dxe5 dxe5 14. h3 Bxf3 15.
Qxf3 Nc5 16. Bc4 Qe7 17. Nb3 Nfd7 18. Be3 Kh8 19. Red1 f5 20. Nxc5 Nxc5 21.
exf5 gxf5 $6 ({Preferable is} 21... Rxf5) 22. Qh5 Nd7 23. Bg5 Nf6 24. Qf3 Qc5
25. Be6 Rae8 $2 (25... f4 {does not lose a pawn.}) 26. Be3 $1 Qe7 27. Bxf5 e4
28. Qe2 Qe5 29. Bg4 Nd5 30. Bd4 Qg5 31. Qd2 e3 32. fxe3 Nxe3 33. Rf1 Rxf1+ 34.
Rxf1 h6 35. Re1 Bxd4 36. Qxd4+ Kg8 37. Bf3 Re7 38. h4 Qg7 39. Qxg7+ Kxg7 40.
Kf2 Nf5 41. Rxe7+ Nxe7 42. Be4 Kf6 43. Kf3 Ke5 44. g4 Nc8 45. g5 hxg5 46. hxg5
Nd6 47. Bd3 Ne8 48. Kg4 Ng7 49. Bc2 b5 50. b4 $1 (50. b4 bxa4 51. Bxa4 axb4 52.
cxb4 Kd6 53. g6 c5 54. bxc5+ Kxc5 55. Kg5 {leads to a theoretical win.}) 1-0

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "12"]
[White "Hulak, Krunoslav"]
[Black "Quinteros, Miguel"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2525"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "135"]
[EventDate "1977.??.??"]

1. g3 e5 2. Bg2 d5 3. d3 Nf6 4. Nf3 Nc6 5. O-O Be7 6. Nc3 O-O 7. Bg5 Be6 8. Nd2
Nd7 9. Bxe7 Nxe7 10. e4 d4 11. Ne2 f6 12. f4 c5 13. f5 Bf7 14. g4 g5 15. fxg6
Nxg6 16. Qe1 Be6 17. Qg3 Rf7 18. Kh1 Rg7 19. Bh3 h6 20. Rf2 Kh7 21. g5 $5 Ngf8
22. Bxe6 Nxe6 23. Qg4 Nxg5 {Black has accepted the pawn.} 24. Rg1 Qe7 25. Qf5+
Kh8 26. Nf1 Rag8 27. Nfg3 Qe6 28. Rfg2 Qf7 29. b3 Nf8 30. Rf1 Nfh7 31. a4 b6
32. Qg4 Ne6 33. Qh3 Rg6 34. Qh5 Qe8 35. Rgf2 Ng7 36. Qh3 Qc8 37. Nf5 Nxf5 38.
Rxf5 Qd7 39. Ng3 Qg7 40. Rh5 Ng5 41. Qf5 Nf7 42. Qd7 Rg4 43. Qf5 Rg6 44. Qd7
Rg4 45. Qe6 Rg6 46. Qe7 Nd8 47. Qxg7+ R8xg7 48. Rhf5 Nc6 49. Nh5 Rf7 50. Nxf6
Nb4 $5 {Black has given back the extra pawn.} (50... Ne7 51. R5f2 Nc6 {
for a repetition of moves.}) 51. Nd5 $1 Rxf5 52. exf5 Rd6 $6 ({Better is} 52...
Rg7 53. f6 Rf7) 53. f6 $1 Kg8 54. f7+ Kf8 55. Nf6 $1 Rxf6 56. Rxf6 Nxc2 57. Kg2
$5 Ne1+ 58. Kf2 Nxd3+ 59. Kf3 c4 $5 {So far, Quinteros has defended well.} 60.
bxc4 Nc5 61. Kg4 $5 e4 62. Kf4 {
Black has problems, but he can eliminate white pawns and lose few of his own.}
62... e3 $2 (62... d3 $1 63. Ke3 Nxa4 $1 {seems to endure.}) 63. Kf3 Nd3 64.
Re6 Nc1 65. Rxh6 Nb3 (65... e2 66. Kf2 d3 67. Rd6 Kxf7 68. Ke1 Ke7 69. Rd5 {
wins for White.}) 66. Rf6 Na5 67. Rf4 Nc6 68. Ke2 1-0

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "13"]
[White "Bohm, Hans"]
[Black "Kavalek, Lubomir"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "2445"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1977.??.??"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nc3 Na5 5. Nf3 d6 $5 {
Kavalek postpones the capture on c4.} 6. Bg5 Be7 7. Bxf6 Bxf6 8. Nd5 O-O 9. h3
$6 {Boehm seems to have little ambition.} 9... c6 $1 10. Nxf6+ Qxf6 11. Qe2 Qg6
12. g4 Qf6 13. Rd1 Qe7 14. Qd2 Nxc4 15. dxc4 Rd8 16. b3 Be6 17. Qg5 f6 $1 18.
Qe3 d5 19. cxd5 cxd5 20. exd5 Bxd5 21. c4 $2 {White should castle.} 21... Qb4+
$1 22. Ke2 Bxc4+ $1 23. bxc4 Qxc4+ 24. Ke1 Rxd1+ 25. Kxd1 Rd8+ 26. Nd2 Rd3 27.
Qe2 e4 28. Ke1 Qxa2 29. h4 Qa3 30. Qd1 h5 $2 (30... Qc3 $1 {
continues the restraint.}) 31. Qc2 Qa1+ 32. Nb1 Qa5+ 33. Kf1 hxg4 34. Qc8+ Kh7
35. Qxg4 Qd5 36. Kg2 e3+ 37. f3 $2 ({Right is} 37. Qf3 $1) 37... Rd4 38. Qc8
Qa2+ 39. Kh3 Qf2 40. Qf5+ Kh6 {
Hulak and Liberzon led half-a-point on Miles and one point before Kavalek.} 0-1

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "14"]
[White "Panno, Oscar"]
[Black "Liberzon, Vladimir"]
[Result "1-0"]
[ECO "D78"]
[WhiteElo "2550"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "109"]
[EventDate "1977.??.??"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c6 7. Nbd2 Bf5 8. b3
a5 9. Bb2 a4 10. Nh4 Be6 11. Qc2 axb3 12. axb3 Rxa1 13. Rxa1 Qb6 14. e3 Na6 15.
Bc3 c5 16. Qb2 Qc7 17. Nhf3 {White has a plus.} 17... dxc4 $6 ({Better is} 
17... Bf5) 18. bxc4 cxd4 19. Nxd4 Bc8 20. Nb5 Qd8 21. Nb3 Ne8 $2 ({Right is} 
21... Qd3 $1 22. Na5 Nc5) 22. Bd4 Nac7 23. Na5 Bxd4 24. Nxd4 {
Black has to lose a pawn.} 24... Qd6 25. Nxb7 Bxb7 26. Qxb7 Qc5 27. Qc6 Qxc6
28. Nxc6 e6 29. Ra7 f6 30. Nd4 Rf7 31. c5 e5 32. Nb3 Rd7 33. Bc6 Rd3 34. Rb7
Kf8 35. Kf1 Rc3 36. Ke1 Rc2 37. Bxe8 Nxe8 38. Rxh7 Ng7 39. Rh8+ Ke7 40. Rb8 Ne6
41. Rb7+ Ke8 42. h4 Kf8 43. Rb6 Ke7 44. Rb7+ Kf8 45. Kd1 $1 Rc4 46. Rb5 Kf7 47.
Kd2 f5 48. Kd3 Ra4 49. f4 exf4 50. gxf4 Ra2 51. Nd4 Ra3+ 52. Kd2 Ra2+ 53. Kc3
Ra3+ 54. Rb3 Rxb3+ 55. Nxb3 {Miles won and Hulak lost. So Miles led.} 1-0

[Event "IBM Amsterdam"]
[Site "17"]
[Date "1977.??.??"]
[Round "15"]
[White "Quinteros, Miguel"]
[Black "Miles, Anthony"]
[Result "0-1"]
[ECO "D25"]
[WhiteElo "2555"]
[BlackElo "2555"]
[Annotator "JvR"]
[PlyCount "66"]
[EventDate "1977.??.??"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. Qb3 Bxf3 7. gxf3 Nbd7 8.
Qxb7 c5 9. dxc5 Bxc5 {
Miles plays a risky opening in the last round, although he is leading.} 10. Nc3
O-O 11. f4 Nb6 $5 (11... Rb8 {happened in Tal - Shianovsky, Yerevan 1962.}) 12.
Be2 Nfd5 13. O-O Qh4 14. Bf3 Rab8 15. Qa6 Nxc3 16. bxc3 f5 17. Bg2 Rf6 18. h3 (
18. Qxa7 {plays for victory.}) 18... Rg6 19. Kh1 Rf8 20. Qe2 Rff6 21. Bd2 Rg4
22. Rg1 Rfg6 {Black strives plainly for a win.} 23. Qf3 Nc4 24. Be1 h6 $5 25.
Rb1 Bd6 26. Rb7 Kh7 27. Rf7 $2 (27. Qe2 $1 {threatens Qxc4 and f3.}) 27... Qh5
{Black has mobilized all attackers.} 28. Rd7 $2 (28. Rf1 $1 Qh4 29. Rg1 e5 $1 {
brings a strong invasion by Black.}) 28... Rxg2 $1 29. Qxg2 ({Or} 29. Qxh5
Rxg1+ 30. Kh2 R6g2#) 29... Rxg2 30. Rxg2 Bf8 31. Rxa7 Qe2 32. Rg1 Nxe3 33. fxe3
Qxe3 {Black delivers mate or captures a rook.   Miles had won the tournament
by a score of 101/2/15, one point before Hulak and one-and-a-half on Liberzon
and Kavalek.} 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "1"]
[White "Ribli, Zoltan"]
[Black "Hort, Vlastimil"]
[Result "1-0"]
[ECO "A77"]
[WhiteElo "2585"]
[BlackElo "2620"]
[Annotator "JvR"]
[PlyCount "103"]
[EventDate "1978.??.??"]

{When Timman became one of the best players of the world, he had no premier
success in the IBM event. That changed in vii 1978.   } 1. d4 Nf6 2. c4 c5 3.
d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Nd2 Nbd7 8. e4 Bg7 9. Be2 O-O 10. O-O
Re8 11. a4 a6 12. Ra3 Rb8 13. a5 Qc7 14. Qc2 $5 Ra8 $6 15. b3 Re7 $6 ({
Preferable is} 15... b5 $1 16. axb6 Nxb6 $1 {
(Petrosian - Lutikov, Moscow 1981).}) 16. Bb2 Rb8 17. h3 Ne8 18. Kh1 Nf8 19.
Bd3 Bd7 20. f4 Qd8 21. Ra2 Nf6 22. Rf3 Be8 23. Qb1 Bd7 24. Qf1 Ne8 25. Ba1 Bd4
26. Nc4 Bb5 27. Ne2 Bxa1 28. Qxa1 Bxc4 29. bxc4 Nd7 30. Ng3 f6 {
The slow manoeuvres by both players have led to a white plus.} 31. Bc2 Rc8 $2 (
31... Kg7 $1 32. Rb3 b5 $1 33. axb6 Nxb6 34. Bd3 Nc7 {guards the queenside.})
32. Rb2 $1 Rc7 33. Rfb3 Nf8 34. Rb6 Ng7 35. Rb1 Rf7 36. Qc3 Rce7 37. Nf1 Ne8
38. Nh2 $1 {White attacks from all sides.} 38... h5 39. Nf3 Ng7 40. e5 $1 {
A breakthrough decides the game.} 40... fxe5 41. fxe5 {Ribli threatens 42. e6.}
41... Rxf3 $5 42. Qxf3 Rxe5 43. Rxb7 Nf5 44. Bxf5 Rxf5 45. Qc3 Nd7 46. Ra7 Ne5
47. Qb2 $1 Qf8 ({Or} 47... Qxa5 $2 48. Qb8+ Rf8 49. Qxf8+ $1) 48. Kh2 h4 49.
Qb7 Rf7 50. Qxa6 Qg7 51. Qc8+ Kh7 52. Rxf7 1-0

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "2"]
[White "Pfleger, Helmut"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "E01"]
[WhiteElo "2530"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "81"]
[EventDate "1978.??.??"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. g3 O-O 5. Bg2 d5 6. cxd5 exd5 7. a3 Be7 8. d4
c6 9. O-O Bf5 $1 10. h3 $6 ({Pfleger will play} 10. Nh4 $1 {
against Keene in Elvetham Hall 1979.}) 10... Ne4 $1 11. Ne5 Nd7 12. Nd3 Re8 {
Black has taken the initiative.} 13. g4 $5 Bg6 14. Nf4 Bd6 15. Nxg6 hxg6 16.
Nxe4 $1 dxe4 17. Qb3 Nb6 18. f4 Qe7 19. f5 $5 gxf5 {
The crucial position has been reached.} 20. Bf4 $2 ({Timman regards} 20. Rxf5
$1 e3 $1 {as poor for White, but} 21. g5 $1 {(threatens g6)} 21... Qe6 22. Qxe6
Rxe6 23. b3 {defends well.}) 20... Rad8 21. gxf5 Bxf4 22. Rxf4 Rxd4 23. f6 Qc5
24. Kh1 e3 $1 25. Rxd4 Qxd4 26. fxg7 Qc4 27. Qxc4 Nxc4 28. Rd1 Nd2 29. Rc1 Kxg7
30. Kh2 Kf6 31. Rc3 Kf5 32. b4 Re7 $6 33. a4 $6 ({Timman mentions the counter} 
33. Kg3 $1) 33... Kf4 $1 34. b5 cxb5 35. axb5 f5 36. Ra3 b6 37. Bc6 Rg7 38. Ra1
Ke5 39. h4 f4 40. Kh3 Nb3 41. Ra2 {
Timman adjourned the move 41. .. Nd4. Pfleger resigned.} 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "3"]
[White "Timman, Jan"]
[Black "Browne, Walter"]
[Result "1-0"]
[ECO "E19"]
[WhiteElo "2585"]
[BlackElo "2550"]
[Annotator "JvR"]
[PlyCount "103"]
[EventDate "1978.??.??"]

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 c5 10. Rd1 d6 11. b3 Bf6 12. Bb2 Qe7 13. Qc2 Nc6 14. e4 e5 15. d5
Nd4 16. Bxd4 exd4 17. Qd3 $5 Rae8 18. Re1 Bc8 19. h4 g6 20. Qf1 Bg7 21. Bh3 Qf6
22. Nd2 Bxh3 23. Qxh3 d3 $1 {
Black has a positional plus and thus takes the initiative.} 24. Qf1 Qc3 25.
Rad1 Qc2 26. Nf3 Bc3 (26... Qxa2 $5 27. Qxd3 {(Timman)} 27... Qa6 {draws.}) 27.
Re3 d2 28. Qe2 Re7 29. Nxd2 $1 Rfe8 30. Kf1 $1 Bg7 $5 31. a4 h6 $2 {
Browne misses his last chance.} (31... f5 $1 32. Nf3 Qxe2+ 33. Rxe2 Rxe4 34.
Rxe4 Rxe4 35. Ng5 Re7 36. Ne6 {does not win for White probably.}) 32. Re1 $1
Bc3 33. Nf3 $1 Qxe2+ 34. R1xe2 Bd4 35. Nxd4 cxd4 36. Rd3 Rxe4 37. Rxe4 Rxe4 38.
f3 $1 Re7 39. Kf2 $1 Kf8 40. Rxd4 f5 41. Rd3 a5 42. Re3 f4 $5 43. gxf4 Rxe3 44.
Kxe3 Kf7 45. Kd4 Kf6 46. Kc3 Kf5 47. b4 axb4+ 48. Kxb4 Kxf4 49. Kb5 g5 50. hxg5
hxg5 51. a5 bxa5 52. c5 1-0

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "4"]
[White "Ribli, Zoltan"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "D93"]
[WhiteElo "2585"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1978.??.??"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. d4 Bg7 5. Bf4 O-O 6. e3 c5 7. dxc5 Ne4 8. Rc1
Nxc3 9. bxc3 dxc4 10. Qxd8 Rxd8 11. Bxc4 Nd7 12. Bg5 Re8 $5 13. Bb5 a6 14. Ba4
h6 15. Bh4 g5 {Timman has aimed at this position.} 16. c6 $2 ({Correct is} 16.
Bg3 Rf8 $1 17. Bxd7 Bxd7 {(Timman)} 18. Nd4) 16... Nc5 $1 17. cxb7 Bxb7 18.
Bxe8 gxh4 19. Bd7 Nxd7 20. Nxh4 Ne5 {Black has gained an advantage.} 21. O-O e6
22. Rfd1 Bf6 23. Rd4 a5 24. h3 Ba6 25. Re4 Bc4 26. a4 h5 27. Rd1 Bb3 28. Rd6
Nc4 29. Rd7 Bxa4 30. Rc7 Bb3 31. Rexc4 Bxc4 32. Rxc4 a4 33. Nf3 a3 34. Nd2 a2
35. Nb3 Ra3 {Jan had defeated his main rival.} 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "5"]
[White "Timman, Jan"]
[Black "Nikolac, Juraj"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2585"]
[BlackElo "2495"]
[Annotator "JvR"]
[PlyCount "73"]
[EventDate "1978.??.??"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 6. e3 Be7 7. Bd3 Nf8 8.
Qc2 Ne6 9. Bh4 g6 10. Nf3 Ng7 $5 (10... O-O {
was played in Portisch - Letzelter, Monte Carlo 1968.}) 11. b4 $5 a6 12. O-O
O-O 13. a4 Nf5 14. Bg5 Be6 15. b5 a5 $2 {Black should exchange.} 16. Ne2 Ng7
17. Rfc1 Rc8 18. Ne5 Bf5 19. Nf4 Qd6 20. Qb3 Rfd8 $2 (20... Rfe8 $1 {
prolongs the game.}) 21. Bxf5 Nxf5 22. Nc6 $1 {Timman wins a pawn.} 22... Rd7 (
{The pointe is} 22... bxc6 23. Rxc6 {and f6 falls.}) 23. Nxa5 Rb8 24. Bxf6 Bxf6
25. Nd3 Re7 26. Qb4 Qd8 27. Nb3 Bg5 28. Rc2 Qf8 29. Nd2 Qh6 30. Nf1 Qh4 31. Qb3
Rd8 32. a5 Qg4 33. h3 Qh5 34. a6 bxa6 35. bxa6 Bf6 36. Nf4 Qg5 37. Nxd5 1-0

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "6"]
[White "Adorjan, Andras"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2515"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1978.??.??"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O 6. Nd5 a5 7. a3 Bc5 8. Ng5
$5 g6 $1 {Timman has prepared this answer to the novelty at home.} 9. Nxf6+
Qxf6 10. Ne4 Qe7 11. Be2 d6 12. b3 Ba7 13. O-O f5 14. Nc3 f4 15. Nd5 Qg5 $5 16.
Kh1 $5 (16. Nxc7 $6 Bf5 17. d3 fxe3 {takes a risk.}) 16... Bh3 $1 17. gxh3 f3
18. Bxf3 Rxf3 19. Qe4 $1 Raf8 20. Qg4 $1 Qd8 21. Bb2 Rxf2 22. Kg1 $1 R2f5 23.
Rxf5 Rxf5 24. Rf1 Rxf1+ 25. Kxf1 Kf7 26. Ke2 Nb8 27. b4 axb4 28. axb4 c6 29.
Nc3 h5 30. Qf3+ Qf6 31. b5 Qxf3+ 32. Kxf3 Nd7 33. Ne4 Bb8 34. bxc6 bxc6 {
White can equalise easily.} 35. Ba3 $2 (35. d3 {(Timman)} 35... d5 36. cxd5
cxd5 37. Nc3 Ke6 38. e4 {draws.}) 35... d5 36. cxd5 cxd5 37. Ng5+ $6 (37. Nc3
$5 e4+ $1 {(Timman)} 38. Kg2 Ke6 39. Ne2 Nb6 {
leads to a hopeless endgame for White.}) 37... Kf6 38. h4 $5 e4+ 39. Kg2 Ne5
40. Bb2 Kf5 41. h3 Bc7 42. Bc3 Bd6 43. Kf2 Nd3+ 44. Kg2 Be7 45. Ba5 $6 (45. Kg3
$1 Bxg5 46. hxg5 Kxg5 47. h4+ $1 Kf5 48. Ba5 Ne5 $1 49. Bb4 Nf3 50. Kh3 $1 Ke5
51. Bc3+ Ke6 $1 52. Kg3 Kf5 {(the king has made a triangle)} 53. Ba5 g5 54.
hxg5 h4+ {wins for Black (Timman).}) 45... Bxg5 46. hxg5 Kxg5 47. Kg3 h4+ 48.
Kg2 Kh5 49. Bd8 g5 50. Bf6 g4 51. hxg4+ Kxg4 52. Bc3 h3+ 53. Kh2 Ne1 54. Kg1
Kg3 55. Be5+ Kf3 56. Kf1 Nd3 57. Bc7 Nb2 {Jan had won five games in a row!} 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "7"]
[White "Dzindzichashvili, Roman"]
[Black "Ribli, Zoltan"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2550"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1978.??.??"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. b3 O-O 8. Bb2
d6 9. e3 Nbd7 10. d4 Rb8 $5 11. Qe2 Re8 12. e4 cxd4 13. Nxd4 a6 14. f4 Bf8 $1
15. e5 $5 {It looks as if Black will lose a piece.} 15... dxe5 16. fxe5 Nxe5 $1
17. Qxe5 Bd6 $1 18. Qe3 e5 19. Bxb7 $2 (19. Nd5 $1 Bxd5 20. cxd5 Bc5 21. b4 $1
Bxd4 22. Bxd4 exd4 23. Qxd4 {draws.}) 19... exd4 20. Qf3 Re3 $1 21. Qg2 dxc3
22. Bc1 Re7 23. Bf3 Qc7 24. Kh1 h6 25. g4 Bf4 26. h4 g6 27. Bxf4 Qxf4 28. Qh2
Qxh2+ 29. Kxh2 b5 30. cxb5 axb5 31. b4 Rc8 32. Rac1 Rc4 33. Kg3 Ne4+ 34. Kg2
Nd2 35. Rfe1 Rxe1 36. Rxe1 Rxb4 37. Rc1 Rb2 38. Kg3 Nxf3 39. Kxf3 b4 40. a3
bxa3 41. Rxc3 a2 42. Rc8+ Kg7 43. Ra8 Kf6 44. Ra5 Ke6 45. Ke4 Kd6 46. g5 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "8"]
[White "Timman, Jan"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2585"]
[BlackElo "2605"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1978.??.??"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. a3 Ne4 6. Nxe4 Bxe4 7. e3 c5 8. d5
$5 exd5 9. cxd5 Qf6 $5 10. Be2 Qf5 11. O-O {
White is going to sacrifice three pawns.} 11... Qxd5 12. Nd2 $1 ({
More prudent is} 12. Bd2 Nc6 13. Bc3) 12... Bxg2 13. e4 $1 Bxe4 14. Nxe4 Qxe4
15. Bf3 $2 ({A plus can be gained by} 15. Bg5 $1 Be7 16. Re1 Nc6 {(Timman)} 17.
Bg4 $1 Qd4 18. Qf3 {and White has a strong attack.}) 15... Qg6+ 16. Kh1 Nc6 17.
Rg1 Qd6 18. Re1+ Kd8 19. Qa4 Rc8 20. Rd1 Nd4 21. Be3 b5 $1 22. Qxa7 Qc7 23.
Qxc7+ Rxc7 24. Bxd4 cxd4 25. Rxd4 Bc5 26. Rd2 Re8 {
Timman has to fight for survival.} 27. b4 Bb6 28. Rad1 g6 29. Be2 Bxf2 30. Bxb5
Re1+ 31. Kg2 Rxd1 32. Rxd1 Be3 33. Kf3 Bc1 34. a4 Ba3 35. Rb1 Rc2 36. Rd1 Rc7
37. Rb1 Rc3+ 38. Ke4 $5 Rh3 39. Rd1 f5+ {Ljubojevic has set a trap.} 40. Kf4 $2
(40. Ke5 $1 Re3+ {(Timman)} 41. Kf6 $1 Re7 42. Rb1 Re4 43. Kg7 Rh4 44. Rd1 Rxh2
45. Rxd7+ Kc8 46. a5 $1 {escapes.}) 40... Ke7 $1 41. Ke5 ({The pointe is} 41.
Rxd7+ Ke6 $1) 41... Re3+ 42. Kf4 Re4+ 43. Kf3 d6 44. Bc6 Rxb4 45. Rd3 Bb2 46.
a5 Rc4 47. Re3+ Be5 48. Bb7 Ra4 49. a6 g5 50. h3 h5 51. Re2 g4+ 52. Kg2 f4 53.
Rd2 Ra3 {Jan had encountered a loss.} 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "9"]
[White "Langeweg, Kick"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "2450"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1978.??.??"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. O-O g6 8. d3
Bg7 9. Be3 b6 10. Qd2 O-O 11. Bh6 e5 $5 12. Rfc1 f6 13. Bxg7 Kxg7 14. a3 a5 15.
Qd1 Rb8 16. Nd2 Bb7 17. Rab1 Rf7 18. Nc4 Ba8 19. Ne3 Ne6 20. Na2 $6 {
Timman criticises the passivity of this move.} (20. a4 {Better seems to me})
20... Ncd4 21. b4 $5 Bxg2 22. Kxg2 cxb4 23. axb4 a4 $1 24. b5 f5 25. f3 Qg5 26.
Kf2 f4 $5 ({Even stronger is} 26... e4 $1 {(Timman).}) 27. Nf1 h5 $5 {
The sacrifice of the a-pawn has no need.} 28. Nc3 Nc5 29. Nxa4 fxg3+ 30. hxg3
Nxa4 31. Qxa4 h4 32. g4 Qxg4 33. Rc7 Rbf8 34. Rbc1 h3 35. Ng3 Qf4 36. Rxf7+
Rxf7 37. Rc8 Qd2 38. Kf1 Rxf3+ $1 ({The game will finish by} 38... Rxf3+ 39.
exf3 Qg2+ 40. Ke1 Nxf3+ 41. Kd1 Qd2#) 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "10"]
[White "Browne, Walter"]
[Black "Andersson, Ulf"]
[Result "0-1"]
[ECO "E15"]
[WhiteElo "2550"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "96"]
[EventDate "1978.??.??"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 c6 8.
Nc3 d5 9. Ne5 O-O 10. Bg2 Nfd7 $1 11. Nd3 $2 (11. Nxd7 Nxd7 12. O-O {
drew in Tomovic - Kostic, Zagreb 1946.}) 11... dxc4 12. Nb4 $5 cxb3 13. Nxc6 $6
({Preferable is} 13. Nxa6 Nxa6 14. Bxc6 Rb8 15. axb3 {
(Decsey - Szoboszlai, Paks 1997).}) 13... Nxc6 14. Bxc6 Rc8 15. Bg2 b2 (15...
bxa2 $5 16. Rxa2 Nb8 {won for Black in Izeta Txabarri - Miles, Benasque 1997.})
16. Qxb2 Nf6 17. Ne4 Rc4 18. Rd1 Nd5 19. O-O Qe7 20. Rc1 Qb4 21. Qxb4 Rxb4 22.
Nc3 Nxc3 23. Rxc3 Rxd4 24. Ra3 Bxe2 25. Re1 Bc4 26. Rxa7 Rfd8 27. Bf1 g5 28.
Bxc4 Rxc4 29. Rb7 Rb4 30. Rc1 Rd5 31. Rc2 h5 32. Kg2 b5 33. Re2 g4 34. h3 Kf8
35. Ra7 Rd1 36. hxg4 hxg4 37. f3 Rd3 38. f4 Rc4 39. Kh2 Rcc3 40. Rg2 Rc5 41.
Ra5 Rh5+ 42. Kg1 Rd1+ 43. Kf2 Rhd5 44. Rg1 R5d2+ 45. Ke3 Rd3+ 46. Ke2 R1d2+ 47.
Ke1 Rb2 48. f5 exf5 0-1

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "11"]
[White "Dzindzichashvili, Roman"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2550"]
[BlackElo "2605"]
[Annotator "JvR"]
[PlyCount "109"]
[EventDate "1978.??.??"]

1. Nf3 Nf6 2. d4 c5 3. c3 e6 4. Bg5 h6 5. Bxf6 gxf6 $5 6. e3 Rg8 7. g3 d5 8.
Nbd2 Nc6 9. Bd3 e5 10. dxe5 fxe5 11. e4 d4 12. Bc4 Be6 13. Bxe6 fxe6 14. Qb3
Qd7 15. Nc4 Bg7 16. O-O O-O-O 17. Qb5 Qe7 18. cxd4 exd4 19. Rac1 Kb8 20. Ncd2
d3 21. Qxc5 Bxb2 22. Qxe7 Nxe7 23. Rb1 Bg7 24. Rb3 b6 25. Rc1 Kb7 26. Ne1 Nc6
27. Kg2 $2 (27. Kf1 $1 {prepares the capture of d3.}) 27... Na5 $1 28. Rbb1 ({
Not} 28. Rxd3 $4 Rxd3 29. Nxd3 Rd8) 28... Rd4 29. Rd1 Rgd8 30. e5 Ra4 31. Nb3
Nxb3 32. axb3 Rad4 33. f4 Bf8 34. Nf3 Re4 35. Ne1 $2 Re2+ $2 ({Black misses} 
35... d2 $1 36. Nf3 Bb4) 36. Kf3 Bc5 37. b4 Re3+ 38. Kg4 Be7 39. Rb3 Re4 $2 ({
Better is} 39... Kc6 $1 40. Rbxd3 Rexd3 41. Rxd3 Rg8+ 42. Kh5 Bxb4) 40. Rbxd3
Rxd3 41. Nxd3 Bxb4 42. Nxb4 Rxb4 43. Kh5 $1 a5 44. Kg6 a4 45. Kf6 b5 46. Kxe6
Rc4 47. f5 Rc6+ 48. Kd5 Kc7 49. f6 Kd7 50. Rf1 Rc8 51. e6+ Ke8 52. Kd6 Kf8 53.
f7 Rd8+ 54. Ke5 Rd2 55. e7+ $1 {Two gamblers seemed to be fighting for victory.
} 1-0

[Event "IBM Amsterdam"]
[Site "18"]
[Date "1978.??.??"]
[Round "12"]
[White "Timman, Jan"]
[Black "Romanishin, Oleg"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2585"]
[BlackElo "2610"]
[Annotator "JvR"]
[PlyCount "149"]
[EventDate "1978.??.??"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Qe7 $2 {
Black brings a poor novelty. He will have problems during the rest of the game.
} 5. d4 exd4 6. Nxd4 g6 7. Ndb5 d6 8. Nd5 Nxd5 9. cxd5 Ne5 10. f4 Ng4 11. Be2
Nf6 12. Qa4 $1 Kd8 $5 13. Nxa7 $1 Qe4 $1 14. Qxe4 Nxe4 15. Nxc8 Kxc8 {
He has positional compensation for the lost pawn.} 16. Bd3 Nc5 17. Bc2 Bg7 18.
a3 Re8 19. Ke2 Na4 20. Rb1 Nb6 21. Rd1 Ra5 22. Bb3 f5 23. Bd2 Ra8 24. Bb4 Kd7
25. Kf3 Re4 26. Bc2 Re7 27. Bb3 Re4 28. Rd3 Nc4 29. Bxc4 Rxc4 30. Rd2 Re8 31.
b3 Rce4 32. Rd3 h6 33. Bc3 Bxc3 34. Rxc3 c5 35. dxc6+ bxc6 36. b4 g5 37. Rd1
g4+ 38. Kf2 R8e6 39. h3 h5 40. hxg4 hxg4 41. Rh1 d5 42. Rh7+ Re7 43. Rxe7+ Rxe7
44. b5 $2 ({Correct is} 44. a4 $1 {(Timman).}) 44... cxb5 45. Rc5 Kd6 46. Rxb5
Rc7 47. Rb6+ Ke7 48. Rb2 Rc4 49. Ra2 Ra4 50. Rd2 Rxa3 $6 (50... Kd6 51. Rd3 Rc4
{draws (Timman).}) 51. Rxd5 Ra2+ 52. Kg3 Kf6 53. Rb5 $1 {
Jan has set a final trap.} 53... Re2 $2 (53... Rd2 $1 54. Re5 Re2 {
brings zugzwang for White and a draw!}) 54. Re5 $1 Re1 55. e4 fxe4 56. Kxg4 Re3
57. Rf5+ Ke6 58. Ra5 Re2 59. g3 Re3 60. Re5+ Kf6 61. Kh4 Re1 62. g4 Rh1+ 63.
Kg3 Rg1+ 64. Kh3 Re1 65. g5+ Kg6 66. Re6+ Kf7 67. Rf6+ Kg7 68. Kg4 Rg1+ 69. Kf5
e3 70. Re6 Rg3 71. Re7+ Kf8 72. Kf6 Rf3 73. Re4 e2 74. f5 Rf2 75. g6 {
Timman led the tournament comfortably. He quickly drew with Ree in the last
round and scored 91/2/13, one point before Ribli and two points onDzindzichashv
ili, Pfleger and Hort. Jan wrote a proud report about his games for
Schaakbulletin. It was a big event cause about a thousand players partook in
many groups.} 1-0

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "1"]
[White "Sax, Gyula"]
[Black "Lein, Anatoly"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2590"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1979.??.??"]

{Hort, Sax, Andersson and Smejkal fought for the first place in Amsterdam vii
1979.  } 1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Nc3 Nxd5 6. Bc4 Nb6 7.
Bb3 Nc6 8. Nf3 e6 9. O-O Be7 10. d4 O-O 11. a3 Bf6 12. Be3 Nd5 13. Qd3 Nxc3 14.
bxc3 b6 15. Bc2 g6 16. Bh6 Re8 17. Rad1 Bb7 18. Ba4 Qe7 19. c4 Red8 20. d5 exd5
21. cxd5 Ne5 22. Qe4 a6 23. Rfe1 $2 {White should have exchanged in the centre.
} 23... Nxf3+ $2 ({Lein misses} 23... Bxd5 $1 24. Rxd5 Rxd5 25. Qxd5 Nxf3+) 24.
gxf3 Qxe4 25. fxe4 b5 $2 (25... Be7 $1 {should be played at once.}) 26. Bb3 $1
{Pawn d5 gets useful support.} 26... Be7 27. e5 Bxa3 28. d6 Bf3 29. Rd4 $1 Bc6
30. Rf4 Rf8 31. e6 $1 Bxd6 32. Rxf7 Rxf7 33. exf7+ Kh8 34. Re6 Bf8 35. Bxf8
Rxf8 36. Rxc6 a5 37. Rb6 a4 38. Bd5 Kg7 39. Rxb5 Rd8 40. Ra5 a3 41. Ba2 Rd3 42.
Ra8 1-0

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "2"]
[White "Andersson, Ulf"]
[Black "Hort, Vlastimil"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "2560"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1979.??.??"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Be2 Nf6 5. Nc3 O-O 6. O-O c6 7. Re1 b5 8. e5
Ne8 9. Bf4 $5 {They play an enterprising Pirc.} 9... Na6 10. Qd2 Nac7 11. Rad1
Bf5 12. a3 a5 13. h3 Qd7 $2 {Hort continues his provocative approach.} 14. Bf1
b4 15. Ne4 Bxe4 16. Rxe4 d5 17. Ree1 Ne6 18. Be3 Qb7 19. h4 f5 20. exf6 $5 (20.
Bh6 $1 f4 21. Ng5 $1 {keeps more territory and starts an attack.}) 20... Nxf6
21. Bd3 Ng4 22. Bg5 $2 {White allows a counter in the centre.} 22... Nxd4 $1
23. Rxe7 Qb6 $5 24. Bf4 $6 Nxf3+ 25. gxf3 Rxf4 26. Rxg7+ $5 ({Or} 26. Qxf4
Qxf2+ 27. Kh1 Qxh4+ 28. Kg1 Qxe7 {(Hort).}) 26... Kxg7 27. Qxf4 Qxf2+ 28. Kh1
Qxh4+ 29. Kg1 Qf2+ 30. Kh1 Nf6 31. Rf1 Qc5 32. Qc7+ Kf8 33. Re1 Re8 34. Rxe8+
Kxe8 35. axb4 axb4 36. Kg2 Nd7 37. Qf4 Kd8 38. Qg4 Ne5 {
This victory became important for the final standings.} 0-1

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "3"]
[White "Hort, Vlastimil"]
[Black "Sahovic, Dragutin"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2600"]
[BlackElo "2520"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1979.??.??"]

1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 g6 5. Nf3 Bg7 6. d4 exd4 7. Nxd4 O-O 8.
O-O Re8 9. Nc2 d6 10. b3 Bf5 11. Rb1 Qd7 12. Bb2 Bh3 13. Nd5 Bxg2 14. Kxg2 Nxd5
15. cxd5 Bxb2 16. Rxb2 Ne7 17. Qd3 Nf5 18. e4 Ng7 19. Nd4 f5 20. exf5 Qf7 $5
21. Ne6 $5 Nxf5 $2 {The intruder on e6 remains untouched.} ({Correct is} 21...
gxf5 22. Nf4 Nh5 23. Nxh5 Qxh5) 22. Re2 $1 c5 23. Rfe1 Qd7 24. h4 Ng7 25. Kh2
b5 26. Re4 Rac8 27. Qe2 a6 28. Qg4 Nxe6 $6 29. Rxe6 Rxe6 30. Rxe6 Qf7 31. Kg2
Rf8 32. Qe2 Rd8 33. Qe4 Rd7 34. Qg4 Kg7 $6 (34... Kh8 $1 35. h5 $1 gxh5 36. Qg5
a5 {prolongs the game.}) 35. h5 $1 Qf5 36. Qxf5 gxf5 37. Kf3 c4 $5 38. bxc4 (
38. bxc4 bxc4 39. Ke3 {will catch the c-pawn.}) 1-0

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "4"]
[White "Torre, Eugenio"]
[Black "Hort, Vlastimil"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2520"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1979.??.??"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 Nf6 5. Qe2 O-O 6. O-O Bg4 7. c3 Nc6 8. Bb5
Qe8 9. Nbd2 a6 10. Bxc6 $5 (10. Bd3 {
occurred in Kovacevic - Planinc, Zagreb 1977.}) 10... Qxc6 11. Re1 Rae8 12. h3
Bc8 13. Nf1 Nd7 (13... e5 $1 {equalises the game.}) 14. Ng3 Nb6 15. Be3 e5 16.
b3 (16. d5 $1 {gains a plus.}) 16... f5 $1 17. exf5 gxf5 18. dxe5 $2 ({Right is
} 18. Nh5 $1 f4 19. Nxg7 Kxg7 20. Bd2 {and the material balance remains.})
18... f4 $1 19. Bxb6 fxg3 20. Be3 Bxh3 $1 {The white pawn structure is ruined.}
21. fxg3 ({Or} 21. gxh3 Rxf3) 21... Bg4 $1 22. Bf2 Bxf3 23. gxf3 Rxe5 24. Qc4+
Qxc4 25. bxc4 Rxf3 26. Kg2 {Hort had a staggering beginning in the tournament.}
0-1

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "5"]
[White "Lein, Anatoly"]
[Black "Stean, Michael"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2535"]
[BlackElo "2540"]
[Annotator "JvR"]
[PlyCount "49"]
[EventDate "1979.??.??"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8. Bg5
d5 9. Nbd2 Nbd7 10. O-O O-O 11. Qc2 Rc8 ({The immediate} 11... c5 {
will become the theory.}) 12. e4 $1 c5 $5 {White can make favourable exchanges.
} 13. exd5 exd5 14. Rad1 dxc4 15. Nxc4 b5 $2 ({Correct is} 15... cxd4 16. Nxd4
h6 17. Bxf6 Bxf6 18. Nc6 Qc7) 16. Nce5 $1 b4 $6 ({Preferable is} 16... h6 17.
Nxd7 Nxd7 18. Bxe7 Qxe7 19. Rfe1 Qf6) 17. Rfe1 cxd4 18. Nc6 $1 d3 $5 19. Qc1 $1
{Black has to lose material.} 19... Rxc6 $5 20. Qxc6 Nb6 21. Ne5 Nfd5 22. Bxe7
Nxe7 23. Qc1 Ng6 24. Nxd3 Bxd3 25. Qe3 1-0

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "6"]
[White "Andersson, Ulf"]
[Black "Lein, Anatoly"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2560"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1979.??.??"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 f5 7. e3 Nf6 8. Nge2
O-O 9. O-O Kh8 10. Bd2 Ne7 11. Qc2 Rb8 12. f4 Bd7 13. Rbe1 a6 14. e4 b5 15.
cxb5 axb5 16. Nd5 fxe4 17. dxe4 Nexd5 18. exd5 Bf5 19. Qb3 Nd7 20. fxe5 Nc5 $2
({Correct is the immediate} 20... Bxe5) 21. Qe3 $1 Bxe5 {
White can decide the game.} 22. Bc3 $6 (22. Nd4 $1 Bd7 23. b4 Na4 24. Nf3 {
gains a great positional advantage.}) 22... Re8 23. Nf4 $5 Qf6 24. g4 $1 Bxc3
$2 ({Correct is} 24... Bxg4 25. Nd3 Bxc3 26. Qxe8+ Rxe8 27. Rxe8+ Kg7 28. Rxf6
Bxf6 29. Nxc5 dxc5 {and Black keeps battling.}) 25. Qxe8+ Rxe8 26. Rxe8+ Kg7
27. bxc3 Qxc3 28. gxf5 Kf7 29. Re2 gxf5 30. Ne6 Kg6 31. Bh3 $1 Kh6 32. Bxf5 Qc4
33. Re3 Nxe6 34. dxe6 Qd4 35. Rff3 Qa1+ 36. Kg2 Qb2+ 37. Rf2 Qd4 38. Re4 Qg7+
39. Rg4 Qe7 40. Rf3 1-0

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "7"]
[White "Ligterink, Gert"]
[Black "Torre, Eugenio"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "2440"]
[BlackElo "2520"]
[Annotator "JvR"]
[PlyCount "80"]
[EventDate "1979.??.??"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 O-O 6. Bd3 Na6 7. O-O c5 8. d5 b6
$5 9. Qe1 $5 Nb4 $1 10. Qh4 b5 $5 11. a3 $5 Nxd3 12. cxd3 b4 13. axb4 cxb4 14.
Nd1 Bg4 15. Be3 Bxf3 $6 {Torre starts an attack on his own king.} 16. Rxf3 Qc8
17. Bd4 $1 Qc2 18. f5 Rac8 19. fxg6 fxg6 20. Ne3 Qe2 {
White has an active position.} ({Not} 20... Qxd3 $2 21. Nf5 $1 Qxe4 22. Qxe4
Nxe4 {(Dolmatov)} 23. Nxe7+ $1) 21. Qf2 $6 (21. Re1 Qd2 {(Dolmatov)} 22. Ref1
$1 {makes preparations for the attack.}) 21... Qxf2+ $5 22. Rxf2 Rc7 23. Rc2
Rfc8 24. Rxc7 Rxc7 25. Bxa7 $5 {The bishop runs into difficulties.} 25... Nd7
$1 26. d4 $1 Kf7 27. Kf1 Ke8 28. Ke2 Bh6 29. Ng4 $5 Bc1 30. Bc5 $1 h5 $1 31.
Nf2 Bxb2 32. Ra8+ $2 {The rook should be used as defender.} (32. Rb1 $1 Bc3 33.
Bxb4 Bxd4 34. Nd3 Rc2+ 35. Bd2 Bc3 36. Rd1 Nf6 37. Nf2 Kf7 38. Kd3 $1 {
escapes from the pressure.}) 32... Kf7 33. Bxb4 Rc2+ $1 34. Kf3 Bxd4 35. Nd3 g5
$1 36. h3 Nf6 37. Ra6 $5 g4+ $1 38. hxg4 hxg4+ 39. Kg3 Re2 40. Nf4 Be5 0-1

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "10"]
[White "Smejkal, Jan"]
[Black "Farago, Ivan"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "2560"]
[BlackElo "2510"]
[Annotator "JvR"]
[PlyCount "176"]
[EventDate "1979.??.??"]

1. c4 Nf6 2. Nf3 c6 3. g3 d5 4. b3 Bg4 5. Bg2 e6 6. Bb2 Nbd7 7. O-O Bd6 8. d4
O-O 9. Nbd2 Qe7 10. Ne5 Bf5 11. Qc1 Rac8 12. a3 c5 13. Nxd7 Nxd7 14. dxc5 Nxc5
15. Qc3 f6 16. Qe3 dxc4 17. Nxc4 Bb8 18. Rac1 b6 19. b4 Na4 20. Ba1 Rc7 21. Qb3
Rfc8 22. b5 Nc5 23. Qb4 Kf8 24. Ne3 Bg6 25. Rc4 Rd7 26. Bc3 Bd6 27. Qb2 Rdc7
28. Bb4 Be8 29. Bd2 Nd7 30. Rxc7 Rxc7 31. a4 Be5 32. Qb1 Bg6 33. Qa2 Bd4 34. a5
Ne5 35. Qa4 Bc5 36. axb6 axb6 37. Ra1 Be8 38. Qb3 Kf7 39. h3 $2 ({Better is} 
39. Bh3 $1) 39... Qd7 $1 {Black threatens a bishop and a pawn.} 40. Qa2 Qxb5
41. Kf1 Bc6 42. Qc2 Bd4 43. Bxc6 Qxc6 44. Qxc6 Nxc6 45. Rc1 Bc5 46. Nc4 Ke7 47.
Bf4 e5 48. Be3 Nd4 49. Rb1 Rc6 50. Nb2 Nb3 51. Na4 Nd4 52. Nxc5 bxc5 53. Rb7+
Kf8 54. Ke1 Nf5 55. Bc1 c4 56. g4 Nd4 57. e3 Nf3+ $2 ({Right is} 57... Ne6 $1)
58. Ke2 $1 e4 $1 (58... Ng1+ 59. Kf1 Nxh3 60. Ba3+ Kg8 61. Rb8+ Kf7 62. Rb7+
Kg6 63. Kg2 Ng5 64. f4 $1 exf4 65. exf4 {draws.}) 59. Ba3+ $1 Kg8 60. Rb8+ Kf7
61. Rb7+ Ke6 $5 62. Re7+ Kd5 63. Rd7+ Ke5 64. Re7+ Re6 65. Rxg7 Ra6 $1 {
The right move can be found by complex computer analysis.} 66. Re7+ $2 ({
Smejkal misses the unlikely draw by} 66. Bb4 $1 Ra2+ 67. Kf1 Rc2 68. Rc7 $1 {
and Black cannot make progress.}) 66... Kd5 67. Rd7+ Kc6 68. Rd6+ Kb5 69. Rxa6
Kxa6 70. Kd1 ({Not} 70. Bb2 Kb5 $1 71. Bxf6 Kb4) 70... Kb5 $1 71. Kc2 Ng5 72.
Be7 ({More resistance is offered by} 72. h4 $1 Nh3 73. Kc3 Nxf2 74. g5 fxg5 75.
hxg5 Nd3 $1 76. Be7 Ne5 $1 77. Bf8 Nf3 78. Be7 Nh4 $1 79. Bf8 Nf5 $1 80. Kd2
Kc6 $1 {The king goes to d5 and Black wins like in the game.}) 72... Nxh3 73.
Bxf6 Nxf2 74. g5 Kc5 $1 75. Kc3 Kd5 $1 76. Bd4 Nh3 77. Bf6 Ng1 78. Bd8 Nf3 79.
Kb4 Nh4 80. Bb6 Nf5 81. Kc3 Nd6 82. Bd8 Ke6 83. Kd4 Nf7 84. Bf6 Kf5 85. Be7
Nxg5 86. Kxc4 Nf3 87. Kd5 h5 88. Bd6 h4 0-1

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "11"]
[White "Sax, Gyula"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2590"]
[BlackElo "2480"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1979.??.??"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 c4 7. g3 Na5 8. Nbd2 Bd7
9. h4 h5 $5 10. Bh3 Nh6 $5 11. O-O Be7 12. Ne1 g6 13. Ng2 O-O-O 14. Rb1 Kb8 15.
Nf3 Qb3 16. Qe2 $5 {White plays for a win.} 16... Ba4 17. Bg5 Bxg5 18. Nxg5 Qc2
$5 19. Qf3 $1 Nb3 $5 20. Qf4 $1 Nd2 $2 {Ree starts unfavourable tactics.} 21.
Rfc1 $1 Qd3 22. Rd1 $1 Nxb1 23. Rxd3 cxd3 24. Nf3 $1 d2 $5 (24... Nf5 {(Sax)}
25. Bxf5 gxf5 26. Qc1 d2 27. Nxd2 Nxd2 28. Qxd2 {also costs a pawn.}) 25. Nxd2
Nxd2 26. Qxd2 Nf5 27. Qg5 Bc2 28. Qf6 Rdf8 $5 29. Nf4 Kc7 $2 ({Sax prefers} 
29... Rhg8) 30. c4 $1 Nxd4 ({The pointe is} 30... dxc4 31. d5 $1) 31. cxd5 Bf5
32. Bg2 Kb8 33. Qe7 exd5 34. Nxd5 Ne6 35. Qd6+ Ka8 36. Qb4 Rc8 37. Nc3 Nd8 38.
Nb5 Rc1+ 39. Kh2 Nc6 40. Qf4 Rc5 41. Nc7+ Kb8 42. e6 Kc8 43. Qd6 1-0

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "12"]
[White "Byrne, Robert E"]
[Black "Andersson, Ulf"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2535"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1979.??.??"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 g6 6. b3 d6 $5 7. O-O Bg7 8.
Bb2 Nf6 9. c4 O-O 10. Nc3 Nbd7 11. Re1 Re8 12. Bf1 b6 13. Qd2 Bb7 14. Rad1 Qc7
15. f3 Rad8 16. Qf2 Ne5 17. Rc1 $2 {Byrne lessens the protection of d4.} 17...
d5 $1 18. exd5 $1 ({Not} 18. cxd5 Nfg4 $1 19. Qg3 $6 Nd3 $4 20. Qxc7 Bxd4+ 21.
Kh1 Ndf2+ 22. Kg1 Nh3+ 23. Kh1 Ngf2#) 18... Nfg4 $1 {
Black has started a strong attack.} 19. Qg3 $2 ({Right is} 19. Qh4 $3 Bf6 20.
Qg3 Nxf3+ 21. Nxf3 Qc5+ 22. Kh1 Nf2+ 23. Qxf2 Qxf2 24. Re2 $1 Qxe2 ({
the pointe is} 24... Qc5 25. Ne4 $1) 25. Bxe2 exd5 26. Rc2 {
and White defends himself.}) 19... Nxf3+ 20. gxf3 ({Or} 20. Nxf3 Qc5+ 21. Kh1
Nf2+) 20... Bxd4+ 21. Kh1 Qxg3 22. hxg3 Ne3 $1 23. Bd3 exd5 24. cxd5 Nxd5 25.
Rxe8+ Rxe8 26. Be4 Bxc3 27. Bxc3 Nxc3 28. Bxb7 Nxa2 29. Rc6 a5 $1 30. Rxb6 Rb8
31. Kg2 Kf8 32. Rb5 Nb4 $1 33. Kf2 Ke7 34. Ke3 Kd6 35. Kd4 Kc7 36. Rxb4 axb4
37. Bd5 Kd6 38. Bxf7 Rf8 39. Bd5 Rf5 40. Be4 Rg5 41. g4 h5 0-1

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "12"]
[White "Smejkal, Jan"]
[Black "Lein, Anatoly"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2560"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "171"]
[EventDate "1979.??.??"]

1. c4 e6 2. g3 Nf6 3. Bg2 d5 4. d4 Be7 5. Nf3 O-O 6. O-O dxc4 7. Qc2 a6 8. Qxc4
b5 9. Qc2 Bb7 10. Bd2 Be4 11. Qc1 Qc8 12. a4 Nbd7 13. Nc3 Bc6 14. Bg5 Bd6 $2
15. Nxb5 $1 Qb7 16. Nxd6 cxd6 17. b4 Be4 18. Qa3 Nd5 19. Bd2 N5b6 $2 (19...
Rab8 $1 20. b5 axb5 21. Qxd6 b4 {brings counter-play.}) 20. Rfc1 d5 21. Be1 Nc4
22. Qb3 Rab8 23. Bf1 Qb6 24. Ng5 Bg6 25. e3 Qb7 26. Nf3 h6 27. Nd2 Ndb6 28. Nf3
Nd7 29. Qd1 Rfc8 30. Nd2 Nxd2 31. Bxd2 Nb6 32. Rc5 Nc4 33. Be1 Qd7 34. Qb3 Rc7
35. Rc1 Rcb7 36. Bg2 Nd6 37. Rc6 Ra7 38. Bf1 Nc4 39. Rc5 Kh7 40. Be2 Qe7 41. f3
f6 42. Bxc4 dxc4 43. Qxc4 e5 44. Rc7 Rxc7 45. Qxc7 Qxc7 46. Rxc7 exd4 47. exd4
Be8 48. b5 axb5 49. a5 b4 50. a6 b3 51. a7 Ra8 52. Bc3 Kg6 53. d5 Bf7 54. d6
Bd5 55. Kf2 Rd8 56. d7 Kf7 57. Rc5 Bb7 58. Rb5 Bc6 59. Rb6 Bd5 60. Rb8 Ke7 61.
Ke3 Kxd7 62. f4 Rc8 63. Kd4 Ba8 64. f5 h5 65. Bb4 b2 66. Bc5 Re8 67. Rxb2 Re4+
68. Kd3 Re5 69. Rb8 Bh1 70. Bd4 Rxf5 71. a8=Q Bxa8 72. Rxa8 Ke7 73. Ke4 Rg5 74.
Ra7+ Kf8 75. Be3 Re5+ 76. Kf4 Kg8 77. Rc7 Ra5 78. Rc5 Ra4+ 79. Kf3 h4 80. g4
Ra2 81. g5 fxg5 82. h3 Rh2 83. Kg4 Rg2+ 84. Kh5 g4 85. hxg4 Kf7 86. Rc7+ 1-0

[Event "IBM Amsterdam"]
[Site "19"]
[Date "1979.??.??"]
[Round "13"]
[White "Stean, Michael"]
[Black "Smejkal, Jan"]
[Result "0-1"]
[ECO "B38"]
[WhiteElo "2540"]
[BlackElo "2560"]
[Annotator "JvR"]
[PlyCount "114"]
[EventDate "1979.??.??"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 g6 2. e4 c5 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Be3 d6 7. Be2 Nf6 8. Nc3
O-O 9. O-O Bd7 10. Rc1 a6 11. Nb3 b6 $5 12. f3 Be6 $5 13. Qd2 Ne5 14. Nd5 b5
15. Nd4 Bd7 16. cxb5 axb5 17. a3 Nxd5 18. exd5 Qb8 19. f4 {
White has the initiative. Black fights back.} 19... Nc4 $1 20. Bxc4 bxc4 21.
Rxc4 Qb7 $1 22. Nc6 Bxc6 23. dxc6 Qxb2 24. Qxb2 Bxb2 25. c7 $5 Bxa3 26. Ra1 Bc5
$1 27. Rxa8 Rxa8 $1 28. Bxc5 dxc5 29. Rxc5 Rc8 30. h4 $5 (30. Kf2 Kf8 31. g4
Ke8 32. Rc3 $1 Kd7 33. Rh3 Rh8 34. Rc3 {draws elegantly.}) 30... Kf8 31. h5 Ke8
32. hxg6 hxg6 33. g4 Kd7 34. Kf2 Rxc7 {
Suddenly, Smejkal has an extra pawn in the rook ending.} 35. Rd5+ Ke6 36. Re5+
Kd6 37. Ra5 f6 38. Kf3 Rc3+ 39. Kf2 Rc5 40. Ra7 g5 41. fxg5 $5 fxg5 $5 42. Kf3
Ke6 43. Ke4 Rc4+ 44. Kf3 Rc3+ 45. Ke4 $2 {
The king should withdraw to the second rank.} 45... Kf6 $1 46. Ra6+ e6 47. Ra8
Rg3 $1 48. Rf8+ Ke7 49. Ra8 Rxg4+ 50. Ke5 Kf7 $1 51. Ra7+ Kg6 52. Re7 Rg1 53.
Rxe6+ Kh5 54. Ra6 Re1+ 55. Kf5 Rf1+ 56. Ke4 g4 57. Ra8 g3 {
Hort and Sax won by a score of 9/13, half-a-point before Andersson and Smejkal.
} 0-1

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "1"]
[White "Larsen, Bent"]
[Black "Dolmatov, Sergey"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2585"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "70"]
[EventDate "1980.??.??"]

{The Crown Group of eight, Grandmaster Group of twelve and Master Group of
twelve played in the Crest Hotel from vi until vii 1980. The lower groups
battled in the RAI. World champion Karpov and Timman competed for victory.   } 
1. c4 c6 2. Nc3 d5 3. d4 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Be2 Bd6 7. O-O O-O 8. b3
Re8 9. Bb2 dxc4 10. Bxc4 b5 11. Bd3 $1 ({Larsen improves on} 11. Be2 {
(Bobotsov - Paidousis, Tel Aviv 1964).}) 11... Bb7 12. Rc1 Rc8 13. a4 a6 14.
Qe2 e5 15. dxe5 Nxe5 16. Bf5 Rb8 17. Ne4 $2 {
The ill Larsen spoils the game quickly.} ({Better is} 17. Rfd1) 17... Nxf3+ $5
18. Qxf3 $4 (18. gxf3 {(Dolmatov)} 18... Nxe4 19. fxe4 {
only brings a plus for Black.}) 18... Nxe4 19. Bxe4 Qh4 $1 {
White will lose several pawns.} 20. Rfd1 Bxh2+ 21. Kf1 Qxe4 22. Qxe4 Rxe4 23.
g3 Bxg3 24. fxg3 Rxe3 25. Rd7 h6 26. Rc3 Rxc3 27. Bxc3 c5 28. a5 Bc6 29. Ra7 b4
30. Be5 Re8 31. Bd6 Bb5+ 32. Kf2 Re2+ 33. Kf3 Rb2 34. Bxc5 Rxb3+ 35. Kf4 Rb1
0-1

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "2"]
[White "Ribli, Zoltan"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2610"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "89"]
[EventDate "1980.??.??"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 O-O 5. g3 d6 6. Bg2 c6 7. O-O Bf5 8. b3
Ne4 9. Bb2 Na6 $5 10. Rc1 Rc8 11. Nh4 Nxc3 12. Bxc3 Bg4 13. h3 Bd7 14. Qd2 d5
$2 ({Better is} 14... Qc7 {(Dolmatov).}) 15. cxd5 cxd5 16. Bxd5 Bxh3 17. Bxb7
$1 Rxc3 $5 (17... Bxf1 18. Bxc8 Qxc8 19. Kxf1 Qh3+ 20. Kg1 {also costs a pawn.}
) 18. Rxc3 Bxf1 19. Kxf1 $1 Qb6 ({Or} 19... Qxd4 $2 20. Qxd4 Bxd4 21. Rc4 Nc5
22. Bd5 {(Dolmatov).}) 20. Bxa6 Qxa6 21. Nf3 Rd8 22. Rd3 Rc8 23. d5 Qd6 24. Kg2
Rc5 25. e4 Qc7 26. Qf4 Qxf4 27. gxf4 Bb2 $6 {The bishop moves offside.} 28. e5
$1 Kf8 29. Ng5 h6 30. Ne4 Rc2 31. d6 exd6 32. Rxd6 $1 Ke7 33. Kf3 g5 $5 34. a4
gxf4 35. Kxf4 Rc1 36. Kf5 Rh1 37. Nf6 h5 38. Rd7+ Kf8 39. Rd8+ Kg7 40. Rg8+ Kh6
41. Rh8+ Kg7 42. Rxh5 Rf1 43. Rg5+ Kh6 44. Ng4+ Kh7 45. Kf6 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "3"]
[White "Timman, Jan"]
[Black "Dolmatov, Sergey"]
[Result "1-0"]
[ECO "D44"]
[WhiteElo "2600"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1980.??.??"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5
9. Nxg5 hxg5 10. Bxg5 Nbd7 11. g3 Qa5 12. exf6 b4 $5 {
Dolmatov brings a sharp novelty.} 13. Ne4 c3 $6 ({The alternative will become} 
13... Ba6) 14. bxc3 bxc3 15. Qd3 Bb7 16. Be2 O-O-O $2 ({Right is} 16... c5 $1
17. O-O c4 18. Qe3 {and White has a plus (Khalifman - Piket, Amsterdam 1995).})
17. O-O Qf5 18. h4 c5 19. Nxc5 Nxc5 20. Qxf5 exf5 21. dxc5 Bxc5 22. Rac1 Bb4
23. Bf4 Rhe8 24. Bc4 Re4 25. Bxf7 Rf8 26. Bg6 Rxf6 27. h5 Bc6 28. Bg5 Rxg6 29.
hxg6 Rg4 30. Bf6 Rxg6 31. Bxc3 Ba3 32. Rcd1 Bd6 33. Bd2 f4 34. Rc1 Bc7 35. Rxc6
Rxc6 36. Bxf4 Bxf4 37. gxf4 Kd7 38. Rd1+ Ke6 39. Rd4 Kf5 40. Kg2 Ra6 41. a4 Kg4
42. Rb4 Re6 43. f5+ Kxf5 44. Kf3 a6 45. Rf4+ Kg5 46. Rg4+ Kf5 47. Rf4+ Kg5 48.
Rg4+ Kf5 49. Rh4 Kg5 50. Kg3 Re1 51. Rc4 Re6 52. Rc5+ Kf6 53. Ra5 Rc6 54. Kg4
Kf7 55. f4 Rg6+ 56. Rg5 Rc6 57. Rf5+ Ke7 58. Kg5 Rc4 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "3"]
[White "Van der Wiel, John"]
[Black "Ribli, Zoltan"]
[Result "1-0"]
[ECO "B93"]
[WhiteElo "2465"]
[BlackElo "2610"]
[Annotator "JvR"]
[PlyCount "58"]
[EventDate "1980.??.??"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. a4
Be7 9. Bc4 O-O 10. O-O Qb6+ 11. Kh1 exf4 12. Bd5 Ng4 13. Nd4 Ne3 $2 ({
Correct is} 13... Bf6) 14. Bxe3 fxe3 15. Rxf7 $1 Rxf7 16. Bxf7+ Kxf7 17. Qh5+
Kg8 18. Qe8+ Bf8 19. Nd5 Qxd4 20. Ne7+ Kh8 21. Rf1 Qf6 22. Rxf6 gxf6 23. Kg1
Kg7 24. Nf5+ Kg8 25. Nxd6 Kg7 26. Qf7+ Kh8 27. Ne8 {
This position had occurred in Van der Wiel - Baljon, Leeuwarden 1979.} 27... h6
({The mentioned game continued by} 27... b5 28. Nxf6 {and White won.}) 28. Nc7
Bc5 29. Kf1 Nf8 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "5"]
[White "Karpov, Anatoly"]
[Black "Dolmatov, Sergey"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2725"]
[BlackElo "2535"]
[Annotator "JvR"]
[PlyCount "109"]
[EventDate "1980.??.??"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8.
Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 O-O 12. Nc2 Rb8 13. Be2 Bg5 14. O-O Be6
15. Qd3 Qd7 $5 ({Usual is} 15... a5) 16. Qg3 f6 17. Rfd1 a5 18. Na3 $5 Na7 19.
h3 Kh8 20. Bg4 Rfc8 $2 (20... f5 $1 21. exf5 Bxf5 {avoids the next restriction.
}) 21. Bxe6 $1 Qxe6 22. Qd3 Rc5 23. Nc2 g6 24. b4 axb4 25. Ncxb4 Rb7 26. a4
bxa4 27. Rxa4 f5 $1 28. Ra6 Nc8 29. Ra8 Kg7 30. Qe2 fxe4 31. Qxe4 Qf5 32. Qe2
$1 (32. Nf6 Re7 33. Nh5+ Kh6 {defends well.}) 32... Rf7 33. c4 Bh4 34. Rf1 Ne7
35. Ra6 Qd7 36. Qe4 Nxd5 37. Nxd5 Be7 {White has the strong knight.} 38. Rfa1
Bf8 39. Qe2 Rc6 40. R6a3 Rc5 41. Rf3 Rxf3 42. Qxf3 Qf7 $2 (42... Be7 $1 {
moves the bishop to the right diagonal.}) 43. Qg4 h5 44. Qe4 Rc8 45. Ra3 $1 Qf5
46. Ra7+ Kh6 47. Qe3+ g5 ({Not} 47... Qg5 $4 48. Rh7+ $1) 48. Qe2 Rb8 49. g4 $1
hxg4 50. hxg4 Qb1+ 51. Kg2 Rb7 ({Or} 51... e4 52. Ra3 $1 Kg6 53. Rh3) 52. Rxb7
Qxb7 53. Qf3 $1 {Black has been outmanoeuvred.} 53... Qc8 54. Qf6+ Kh7 55. Qf7+
1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "6"]
[White "Ribli, Zoltan"]
[Black "Karpov, Anatoly"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2610"]
[BlackElo "2725"]
[Annotator "JvR"]
[PlyCount "109"]
[EventDate "1980.??.??"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O dxc4 7. Qc2 a6 8. Qxc4
b5 9. Qc2 Bb7 10. Bf4 Nd5 11. Nc3 Nxf4 12. gxf4 Nd7 13. Rfd1 Qc8 $5 14. Ne4 c5
15. dxc5 Nxc5 16. Nxc5 Qxc5 17. Qxc5 Bxc5 18. Rac1 Rfc8 19. Ne5 Bxg2 20. Kxg2
f6 21. Nf3 Bf8 22. e3 g6 23. b3 Bb4 24. h3 Kf8 25. Nd4 Kf7 {Karpov has offered
a draw. He complaints against Sosonko about Ribli's dull play.} 26. a4 $5 {
Ribli continues and makes a slight excuse.} 26... bxa4 27. bxa4 Bc5 $2 ({
Better is} 27... Rc5 $1 28. Nb3 Rxc1 29. Rxc1 Bd6 $1 30. Rc6 Ke7 {
and the intruder will be chased from the fortress.}) 28. Rc4 $1 Ba3 29. Rxc8
Rxc8 30. Rb1 Rc4 31. Rb7+ Be7 32. Ra7 e5 33. fxe5 fxe5 34. Nf3 Rxa4 35. Nxe5+
Kf6 $2 (35... Ke6 36. Nc6 Bf6 $1 37. Rxh7 Rc4 {offers the last drawing chance.}
) 36. Nc6 Bc5 37. Rxh7 Ra2 38. Kf3 a5 39. h4 a4 40. Ke4 $1 Bf8 ({The pointe is
} 40... Rxf2 $2 41. Nd8 $1) 41. Ra7 Bd6 42. f4 Rh2 43. Ra6 Kf7 44. Ne5+ $5 Bxe5
45. Kxe5 Kg7 46. Ra7+ Kh6 47. Rxa4 Rxh4 48. Kf6 Rh5 49. e4 Rh4 50. e5 Rh5 51.
e6 Rf5+ 52. Ke7 Kg7 53. Kd6 Rf8 54. Ra7+ Kf6 55. Rd7 $1 {
Ribli played a masterful positional game.} 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "7"]
[White "Karpov, Anatoly"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2725"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1980.??.??"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5
Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bf4 Ngf6 12. O-O-O Be7 13. c4 a5 14. Kb1 a4 15.
Ne5 Nxe5 16. Bxe5 Qa5 17. Ne4 O-O-O 18. c5 Nxe4 19. Qxe4 Bf6 20. Bxf6 gxf6 21.
Qf4 f5 22. Rd3 Rd5 23. Rhd1 Qc7 24. Qd2 f4 25. Ra3 Rg8 26. f3 Rdg5 27. Rg1 Rxh5
28. Rxa4 Qb8 29. Re1 Rh2 30. Re2 Rh1+ 31. Kc2 h5 32. Qd3 Kd7 33. Rb4 Rg1 $2 ({
Correct is} 33... Rg5 34. Qh7 Ke7) 34. d5 $1 cxd5 35. c6+ $1 Kxc6 ({Or} 35...
Kc8 36. Rxb7 Qd6 37. Qb5 $1 R8xg2 38. Kb3 $1 Rxe2 39. Qa6 $1) 36. Qb5+ 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "7"]
[White "Timman, Jan"]
[Black "Hort, Vlastimil"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "2600"]
[BlackElo "2595"]
[Annotator "JvR"]
[PlyCount "116"]
[EventDate "1980.??.??"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Qa5 7. Nd2 dxc4 8.
Bxf6 Nxf6 9. Nxc4 Qc7 10. Be2 Be7 11. a3 Nd5 12. Rc1 O-O 13. O-O Bd7 14. b4
Rfc8 15. Qb3 Qd8 16. Rfd1 Be8 17. Bf3 Rc7 18. Ne2 Bf8 19. g3 Qe7 20. Rc2 Rd8
21. Nc1 Nb6 22. Nd3 Nxc4 23. Rxc4 f6 24. Rc3 Kh8 25. Be4 Qd6 26. Nc5 Re7 27.
Qc2 h6 28. Bf3 Qb8 29. Bg4 Rd6 30. Nd3 Qd8 31. Nf4 g5 32. Nd3 Kg7 33. Qe2 Bg6
34. Nc5 Qe8 35. Bf3 a6 36. Rdc1 Qf7 37. a4 h5 $6 {
A dull Cambridge Springs becomes alive.} ({Hort should play} 37... e5 $1 {
(Timman).}) 38. b5 axb5 39. axb5 e5 40. dxe5 Rxe5 41. bxc6 bxc6 42. Qb2 Re7 43.
Rb3 Kh7 $2 (43... g4 $1 44. Bg2 Rc7 {prevents the loss of a pawn.}) 44. Nb7 $1
Rd2 $1 45. Qxd2 Qxb3 46. Na5 $1 Qf7 47. Nxc6 Rd7 48. Nd4 f5 $5 49. Rc8 $1 Bg7
50. Bc6 Rd6 51. Be8 Qb7 52. Qc2 Qd5 53. Bxg6+ Kxg6 54. Rc5 Qe4 55. Qxe4 fxe4
56. Nf5 Rd1+ 57. Kg2 Bf6 58. g4 $1 hxg4 {White will play 59. Ng3 and win.  
 The first cycle of the Crown Group had ended. Karpov led by a score of plus
two. Timman and Ribli had made plus one.} 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "8"]
[White "Karpov, Anatoly"]
[Black "Van der Wiel, John"]
[Result "1-0"]
[ECO "B66"]
[WhiteElo "2725"]
[BlackElo "2465"]
[Annotator "JvR"]
[PlyCount "63"]
[EventDate "1980.??.??"]

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. Be3 Bd7 10. f3 Qc7 11. g4 Ne5 12. h4 b5 13. Rg1 $5 {
Karpov plays the Open Sicilian Defence aggressively.} 13... h5 $2 ({Better is} 
13... b4 14. Nb1 Rb8 {(Lahno - Kononenko, Alushta 2003).}) 14. g5 $1 Ng8 15.
Be2 Rb8 16. f4 b4 17. Nb1 Ng4 $5 (17... Nc4 18. Qd3 Nxe3 19. Qxe3 {
also favours White.}) 18. Bxa6 $5 g6 $5 (18... Ra8 $1 19. Be2 Rxa2 20. f5 $1 b3
{gives counter-play.}) 19. Rgf1 Nxe3 20. Qxe3 Ne7 21. f5 gxf5 22. exf5 e5 23.
f6 $1 {Karpov plays the final attack elegantly.} 23... exd4 24. Rxd4 Be6 25.
fxe7 Bg7 26. Re4 Qa5 27. Rxe6 $1 {Van der Wiel has no proper defence.} 27...
Qxa6 28. Rxf7 $1 Kxf7 29. e8=Q+ Rbxe8 30. g6+ Kg8 31. Rxe8+ Bf8 32. Qe6+ 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "10"]
[White "Hort, Vlastimil"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2595"]
[BlackElo "2585"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1980.??.??"]

1. c4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 Bg4 5. e3 Nd7 6. Be2 c5 7. h3 $5 Bxf3 8.
Bxf3 Rb8 9. d5 a6 10. a4 h5 11. g3 Qa5 12. Ra3 Ngf6 13. Bd2 O-O 14. g4 $1 hxg4
$2 {He opens the kingside.} ({Right is} 14... h4) 15. hxg4 Rfe8 16. Be2 Qd8 17.
g5 Nh7 18. f4 Nhf8 19. Bd3 e5 20. dxe6 fxe6 21. Qc2 Kf7 22. Rb3 Nb6 23. a5 Nc8
24. Ne4 d5 25. cxd5 exd5 26. Nxc5 Nd6 27. Rb6 Re7 28. b4 $1 Rc7 29. Qb3 {
White dominates the position.} 29... Nc8 30. Be4 $1 Nxb6 31. axb6 Re7 32. Bxd5+
Ke8 33. Qa4+ Nd7 34. Be6 Qxb6 35. Bxd7+ Kf8 36. Qb3 1-0

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "12"]
[White "Larsen, Bent"]
[Black "Timman, Jan"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2585"]
[BlackElo "2600"]
[Annotator "JvR"]
[PlyCount "76"]
[EventDate "1980.??.??"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. d3 Be7 7. Nf3 Nc6 8.
O-O O-O 9. a3 Be6 10. b4 f6 11. Bb2 Qe8 12. Nd2 $5 Qf7 13. Rc1 Rfd8 14. Nb5 $1
Bd5 {The critical position in the transformation to the middle game has been
reached.} 15. Bxd5 $5 (15. Nxc7 Bxg2 16. Nxa8 Bxf1 17. Nxb6 Bxe2 18. Qxe2 axb6
{(Timman)} 19. b5 $1 Na7 20. a4 {equalises.}) 15... Nxd5 16. e4 $6 ({
Preferable is} 16. Nc3 {(Salov - Barbulescu, Groningen 1981).}) 16... Nb6 17.
Nb3 $2 ({Better is} 17. Nc4 $1 Nxc4 18. Rxc4) 17... a6 $1 18. Nxc7 Rac8 19. b5
Rxc7 20. bxc6 Na4 21. Ba1 Bxa3 22. Rb1 b5 23. Na5 Bc5 24. Rc1 Rd6 25. d4 $1 {
Larsen counters.} 25... Bxd4 26. Bxd4 Rxd4 $5 27. Qc2 Nb6 28. Rfd1 ({Or} 28.
Qc5 Nd7 $1 29. Qc3 Nf8) 28... Nc4 29. Nb3 Rxd1+ 30. Qxd1 Qe8 31. Qd5+ Kh8 32.
Nd2 h6 $1 33. Nxc4 Qxc6 $1 34. Ra1 bxc4 35. Rxa6 Qxa6 36. Qd8+ Kh7 37. Qxc7
Qa1+ 38. Kg2 Qd4 {Black can win the queen ending easily.} 0-1

[Event "IBM Amsterdam"]
[Site "20"]
[Date "1980.??.??"]
[Round "14"]
[White "Van der Wiel, John"]
[Black "Sosonko, Gennadi"]
[Result "0-1"]
[ECO "B17"]
[WhiteElo "2465"]
[BlackElo "2545"]
[Annotator "JvR"]
[PlyCount "68"]
[EventDate "1980.??.??"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Nxf6+ Nxf6 7. Nf3 Bf5
8. Qe2 e6 9. Bg5 Bg4 10. O-O-O Be7 11. h3 Bxf3 12. Qxf3 Nd5 13. Bxe7 Qxe7 14.
Rhe1 b5 $5 (14... O-O {was played in Matanovic - Petrosian, Kiev 1959.}) 15.
Bd3 Rd8 16. Re5 Qf6 17. Be4 Qxf3 18. Bxf3 a5 19. b3 ({Preferable is} 19. c3 $1)
19... b4 $1 20. Kb2 Ke7 {Black threatens restraint on the queenside.} 21. Rc1
$2 (21. Bxd5 cxd5 22. c4 bxc3+ 23. Kxc3 {is alright.}) 21... f6 $1 22. Ree1 Nc3
$1 {White has been restricted.} 23. a3 Rxd4 24. axb4 axb4 25. Ra1 ({Or} 25.
Bxc6 Rc8 26. Bf3 Rd2 27. Rf1 e5) 25... Kd6 26. Ra7 e5 $1 27. Rea1 g6 28. Rf7 e4
29. Rxf6+ Ke5 30. Rxc6 exf3 31. Re1+ Kf5 32. g4+ Kg5 33. Rc5+ Kh4 34. Ree5 Kxh3
{Sosonko had started by twelve draws and won the last two games.   Karpov had
scored plus four in the second cycle. He won by 10/14, one point before Timman.
The last large IBM chess event had been played in Amsterdam.} 0-1

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "1"]
[White "Hort, Vlastimil"]
[Black "Karpov, Anatoly"]
[Result "1-0"]
[ECO "D58"]
[Annotator "JvR"]
[PlyCount "51"]
[EventDate "1981.??.??"]

{AMSTERDAM 1981  Only one group played in the last IBM Amsterdam chess event
from 16 until 28 v 1981. All sole winners plus Ree carried out a Reminiscence
Tournament in the main office of IBM. The event became a competition between
Timman, Portisch and Karpov. When more than 500 spectators showed up, the
facilities were insufficient and monitors were installed.   } 1. d4 Nf6 2. Nf3
e6 3. c4 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. Rc1 Bb7 9. cxd5 exd5
10. Be2 Nbd7 11. O-O c5 12. Qc2 a6 $5 13. Rfd1 c4 $5 14. a4 $5 Bc6 $2 {
Karpov makes odd positional moves.} (14... Qc7 {should be a useful move.}) 15.
Ne5 $1 Qc7 16. Nxc6 Qxc6 {The exchange favours White.} 17. Bf3 Bb4 $4 (17...
Rae8 $1 18. b3 b5 19. axb5 axb5 20. bxc4 bxc4 21. Rb1 {leads to a white attack.
}) 18. Nxd5 $1 Nxd5 19. Qf5 Qxa4 20. Bxd5 Rac8 21. b3 $1 cxb3 22. Rxc8 Rxc8 23.
Qxf7+ Kh8 24. Bxb3 Qb5 25. Be6 Rf8 26. Bxd7 $1 {
A surprise had occurred in the first round.} 1-0

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "1"]
[White "Kavalek, Lubomir"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]
[ECO "E15"]
[Annotator "JvR"]
[PlyCount "79"]
[EventDate "1981.??.??"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. d5 exd5 7. Nh4 g6 8. Nc3
Bg7 9. O-O O-O 10. Bf4 Na6 $5 11. Bd6 Re8 12. cxd5 b5 $6 ({Better is} 12... Ng4
$1) 13. Nxb5 Qb6 14. a4 $1 {Black still suffers from restraint.} 14... Nb4 $6 (
14... Ne4 {(Browne - Santillan, Las Vegas 2002)} 15. Bf4 g5 $5 {
gives counter-play.}) 15. Bc7 Qa6 16. Rc1 Bf8 17. d6 $1 Bxg2 18. Nxg2 Re5 19.
f3 Bh6 20. Rc4 Nfd5 21. e4 Ne3 22. Nxe3 Bxe3+ 23. Kg2 Rae8 24. Re1 Bh6 25. f4
R5e6 26. Rxc5 $5 Rxe4 27. Rxe4 Rxe4 28. Qf3 Re8 29. b3 Bg7 30. Rc4 Nc6 31. Rxc6
dxc6 32. d7 Rf8 33. Nd6 Bf6 34. Ne8 c5 35. Nxf6+ Qxf6 36. Qd5 Rd8 37. Bxd8 Qxd8
38. Kf2 Kg7 39. Qe5+ Kf8 40. Qxc5+ 1-0

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "2"]
[White "Portisch, Lajos"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "D18"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1981.??.??"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O
Nbd7 9. Nh4 Bg4 10. f3 Bh5 11. e4 $5 Nb6 ({Not} 11... Nxe4 $2 12. Nxe4 Qxh4 13.
g4 Bg6 14. Bg5 Qh3 15. Nf2 {(Smyslov).}) 12. Be2 Nfd7 13. g3 a5 $1 14. Be3 O-O
15. Ng2 f6 16. Nf4 Bf7 17. Nd3 $6 Nc4 $1 {Black penetrates the white position.}
18. Bc1 $2 {Hereafter, Smyslov undertakes a decisive attack.} (18. Bf2 Nxb2 $1
19. Nxb2 Bxc3 20. Qc2 Bb4 21. Nd3 Bd6 22. Rab1 {
counters at the expense of a pawn.}) 18... e5 $1 19. dxe5 Ndxe5 20. Kh1 Nxd3
21. Bxd3 Ne5 22. Be2 Qxd1 23. Nxd1 $5 Rfd8 24. Nf2 Bc4 25. Bxc4+ Nxc4 26. b3
Nd2 27. Bxd2 Rxd2 28. e5 $5 (28. Rad1 Rad8 29. Kg2 Bc5 {also wins for Black.})
28... fxe5 29. Ne4 Rd3 30. Rab1 Rad8 31. Kg2 Re3 32. Rfd1 Rd5 $1 33. Kf2 Rxd1
34. Rxd1 Rxb3 35. Rd7 h6 $1 36. Ke2 b5 37. axb5 cxb5 38. f4 exf4 39. gxf4 a4
40. f5 a3 41. Ra7 Rh3 0-1

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "2"]
[White "Timman, Jan"]
[Black "Ree, Hans"]
[Result "1-0"]
[ECO "E81"]
[Annotator "JvR"]
[PlyCount "69"]
[EventDate "1981.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. Bd3 O-O 8. Nge2 b5
9. O-O Nbd7 10. b3 e5 11. d5 bxc4 12. Bxc4 c5 13. Qd2 Ne8 14. Rab1 $5 (14. a3 {
occurred in Averbakh - Podgaets, Alma-Ata 1968.}) 14... Nb6 $5 15. Bd3 a5 16.
a3 f5 17. f4 $1 {White counterattacks on the kingside.} 17... Nd7 $6 ({
Better is} 17... fxe4 18. Nxe4 {(Timman)} 18... Bf5) 18. exf5 $1 gxf5 19. b4 $6
(19. fxe5 $1 Nxe5 20. Bg5 {gains an edge.}) 19... axb4 20. axb4 cxb4 21. Rxb4
Nc7 $6 ({Better is} 21... e4 $1 {(Cvetkovic)}) 22. fxe5 $1 Nxe5 {
Pawn f5 becomes weak.} 23. Bg5 Qe8 24. Bc2 Na6 25. Rh4 Nc5 26. Bh6 Ra7 27. Bxg7
Rxg7 28. Ng3 Ng6 29. Rh6 $1 Rgf7 30. Rh5 Qe5 $2 (30... Ne4 $1 31. Bxe4 fxe4 32.
Rxf7 Qxf7 $1 33. Qe3 {
(Cvetkovic) will lead to the loss of pawn e4, but Black keeps chances.}) 31.
Rg5 Kh8 32. Nb5 Ba6 33. Re1 $1 Ne4 34. Nxe4 $1 Bxb5 $6 35. Nc3 {Timman had
ated Donner in the first round. So he started by two wins and had put Karpov
and Portisch at a distance.} 1-0

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "3"]
[White "Donner, Jan Hein"]
[Black "Karpov, Anatoly"]
[Result "0-1"]
[ECO "E39"]
[Annotator "JvR"]
[PlyCount "106"]
[EventDate "1981.??.??"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. Bf4 Na6 7. Bd6 Re8 8. a3
Qa5 9. Rc1 Bxc3+ 10. Qxc3 Qxc3+ 11. Rxc3 Ne4 12. Rc2 Naxc5 13. Bxc5 Nxc5 14.
Nf3 $5 b6 15. Nd4 a5 16. Nb5 Rd8 17. Nd6 Bb7 18. Nxb7 Nxb7 {
Black is gaining a plus.} 19. e3 Rac8 20. Bd3 $5 Nc5 21. Be2 a4 22. f3 Nb3 23.
Bd3 Rc5 24. Ke2 Rdc8 25. Rc3 Na5 26. Rhc1 Kf8 27. Kf2 $2 ({The semi-sacrifice} 
27. Bc2 $1 Rxc4 28. Bxa4 $1 {lifts the pressure.}) 27... Ke7 28. Ke2 h6 29. Ke1
Rh5 30. h3 Rhc5 31. Kf2 Nb3 32. R1c2 d6 33. Ke1 g5 34. g3 R5c7 35. Bf1 f5 36.
Kf2 Rf8 37. Bg2 f4 38. Bf1 Rc5 39. Bd3 $2 ({Better is} 39. exf4 gxf4 40. g4 $1
h5 {(Filip)} 41. Bd3 {and White will not be powerless.}) 39... fxe3+ $1 40.
Kxe3 Re5+ $1 41. Be4 $1 Nc5 42. Kd4 Nb3+ 43. Kd3 Kd7 {Though he suffers from
restraint, Donner has high hopes, when the adjourned game is resumed.} 44. Ke3
Nc5 45. Kd4 Rc8 46. Rf2 $1 Nb3+ 47. Kd3 Rf8 48. Rfc2 h5 49. Ke3 Nc5 $1 50. Kd4
g4 $1 {Donner has been outplayed.} 51. Re3 (51. hxg4 hxg4 52. Rh2 gxf3 53. Bxf3
Nb3+ {costs an exchange.}) 51... gxf3 52. Bxf3 Nb3+ 53. Kd3 Rxe3+ (53... Rxe3+
54. Kxe3 Rxf3+ 55. Kxf3 Nd4+ {wins material.}) 0-1

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "4"]
[White "Timman, Jan"]
[Black "Langeweg, Kick"]
[Result "1-0"]
[ECO "B47"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1981.??.??"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. g3 Qc7 7. Bg2 Nf6 8. O-O
Be7 9. Re1 Nxd4 10. Qxd4 Bc5 11. Bf4 d6 12. Qd2 Ng4 13. Re2 Ne5 14. Na4 Ba7 15.
Rd1 Bd7 16. Nc3 $5 (16. Qb4 $2 Qc4 17. Qxc4 Nxc4 {
favours Black (Diaz - Smejkal, Biel 1976).}) 16... Rd8 $1 17. b3 $5 ({Not} 17.
Qxd6 $6 Qxd6 18. Rxd6 Nc4 $1 {(Cvetkovic).}) 17... Bb8 18. Re3 $6 Bc6 19. Ne2
Ba7 20. Rc3 $6 Ng4 $1 21. Rf1 e5 22. h3 Nf6 $6 (22... Bxf2+ $1 23. Rxf2 Nxf2
24. Bg5 Nxh3+ {gains a plus.}) 23. Bg5 Qa5 24. Bxf6 gxf6 25. a4 h5 26. h4 Bc5
27. Qd1 b5 28. axb5 axb5 29. Rd3 b4 30. Kh2 Qa8 31. f3 Ke7 32. c3 Bb5 33. c4
Bc6 34. Qe1 Qa2 35. f4 Qc2 36. Nc1 Ra8 $2 {The black chances are changing.} ({
Correct is} 36... Rhg8 37. Rd2 Qc3) 37. Rd2 Qb1 $6 38. fxe5 fxe5 39. Qe2 Rh6
40. Rb2 Qa1 41. Na2 Rxa2 42. Rxa2 {Black collapsed under time pressure.} 1-0

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "6"]
[White "Portisch, Lajos"]
[Black "Miles, Anthony"]
[Result "1-0"]
[ECO "E41"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1981.??.??"]

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 Qa5 $5 ({Theory is} 9... h6) 10. Bd2 Bd7 11. O-O h6 12. Ne1 cxd4 $6 ({
Better is} 12... O-O) 13. cxd4 Qa3 14. d5 Nd4 15. Bc1 Qa6 $6 (15... Qa5 {
retreats correctly (Matanovic).}) 16. Be3 Ba4 $6 17. Qd2 Rc8 $6 (17... b5 $5
18. Qb4 $1 bxc4 19. Bxc4 Bb5 20. Bxb5+ Nxb5 {gives confusion.}) 18. Bxd4 exd4
19. Rb1 $1 Rc5 20. Nf3 Nd7 21. Qb2 O-O 22. Nxd4 Rb8 23. Nf5 f6 24. Be2 Ne5 25.
Qa3 Kh7 26. Rb4 Ra5 27. Qg3 g6 28. Nd4 Rc5 29. Qf4 Rc7 30. Rfb1 Rf7 31. c5 Qa5
32. c6 b6 33. Qe3 1-0

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "7"]
[White "Kavalek, Lubomir"]
[Black "Donner, Jan Hein"]
[Result "1-0"]
[ECO "D54"]
[Annotator "JvR"]
[PlyCount "71"]
[EventDate "1981.??.??"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 Be7 5. e3 O-O 6. Rc1 Ne4 7. Bxe7 Qxe7 8.
Nf3 c6 9. Bd3 Nxc3 10. Rxc3 Nd7 11. Qc2 g6 $5 ({Usual is} 11... h6) 12. O-O
dxc4 $5 ({My preference has} 12... Re8 13. Qb3 e5 $1 {(threatens .. e4)} 14.
dxe5 Nxe5 15. Nxe5 Qxe5 16. cxd5 Qxd5 17. Qxd5 cxd5 18. Rc7 Rb8 {
and Black will survive.}) 13. Bxc4 e5 14. d5 $1 {Black has a tough defence.}
14... c5 $2 ({Right is} 14... Nf6 $1 15. dxc6 bxc6) 15. Rd1 Qd6 16. Nd2 f5 17.
Bb5 $1 a6 $5 ({Donner accepts the loss of a a pawn, because} 17... b6 18. Nc4
Qf6 19. Ra3 a5 20. d6 {is even worse.}) 18. Bxd7 Bxd7 19. Rxc5 Rac8 20. Rxc8
Rxc8 21. Qb3 b5 22. e4 Qc5 23. Nf3 Qd6 24. h3 Rc4 25. exf5 gxf5 26. Qe3 e4 27.
Qg5+ Kf7 28. Qh5+ Kg8 29. Nd4 $1 Qxd5 30. Nc2 Qc6 31. Qg5+ Kf7 32. Qd8 Bc8 33.
Rd6 Qxd6 34. Qxd6 Rxc2 35. b4 Kg7 36. h4 1-0

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "8"]
[White "Timman, Jan"]
[Black "Polugaevsky, Lev"]
[Result "1-0"]
[ECO "B50"]
[Annotator "JvR"]
[PlyCount "117"]
[EventDate "1981.??.??"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. g3 Nf6 5. Bg2 d6 6. O-O Be7 7. d3 O-O 8. Bf4
Bd7 9. h3 $5 Nd4 10. Nxd4 cxd4 11. Ne2 e5 12. Bd2 Rc8 13. c3 dxc3 14. Bxc3 Bc6
15. f4 Qb6+ 16. Kh2 Nd7 17. Qd2 Bf6 18. g4 Nc5 19. g5 {
Timman starts an attack on the kingside.} 19... Be7 $5 20. Ng3 Qd8 21. h4 exf4
$2 ({The solid} 21... Bb5 $1 22. Rf3 f6 23. Nf5 Ne6 {neutralises the advance.})
22. Nf5 $1 {Black has miscalculated.} 22... f6 $1 ({Polugaevsky had noticed} 
22... g6 $4 23. Nh6#) ({but missed} 22... Ne6 $2 23. d4 $1) 23. Nxe7+ Qxe7 24.
gxf6 Rxf6 $1 ({Not} 24... gxf6 $5 25. Qxf4) 25. Bxf6 Qxf6 26. Rxf4 Qd4 $6 {
Polu looks distressed. He is losing his touch in a great chess event.} ({
Preferable is} 26... Qh6 $1 27. Kg3 Ne6 28. Rf2 Qg6+) 27. Rd1 Ne6 28. Rf5 g6
29. Rf2 d5 30. exd5 Bxd5 31. Bxd5 Qxd5 32. Qe3 Ng7 33. d4 Nf5 34. Qe5 Qd7 35.
Qf4 Re8 36. Rc1 Re7 37. Rc5 Rf7 38. Qe5 Qd8 39. Rf4 b6 40. Rc6 Rd7 41. Qe6+ Kg7
42. Qe5+ Kg8 43. Rg4 Ng7 44. Re4 Nf5 45. Re6 Kf7 46. Rf6+ Qxf6 47. Qe8+ Kg7 48.
Qxd7+ Kh6 49. Qe6 Qd8 50. d5 Qc7+ 51. Qe5 Qc2+ 52. Re2 Qc4 53. Qe4 Qc7+ 54. Kg1
Qc1+ 55. Kg2 Qd1 56. Rf2 Kg7 57. Qe5+ Kg8 58. Kh2 Qd3 59. d6 $5 {
Timman leads by one point on Karpov and Portisch.} 1-0

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "9"]
[White "Langeweg, Kick"]
[Black "Karpov, Anatoly"]
[Result "0-1"]
[ECO "E13"]
[Annotator "JvR"]
[PlyCount "82"]
[EventDate "1981.??.??"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. Bg5 h6 6. Bh4 g5 7. Bg3 Ne4 8. Qc2
Bb7 9. e3 Bxc3+ 10. bxc3 Nxg3 11. hxg3 Nc6 12. Nd2 Qe7 13. Qb2 g4 $5 {
Black's expansion on the kingside has little effect at first.} 14. Nb3 Qg5 15.
c5 Rb8 16. Qa3 $5 h5 17. Rh4 $5 Ba8 18. Be2 f5 19. Rd1 Qe7 20. Qa4 Kf7 21. c4
a5 22. a3 $5 Ne5 $1 {
Langeweg panics, temporarily sacrifices a pawn and weakens his position.} 23.
d5 $2 ({Right is} 23. cxb6 $1 cxb6 24. d5 $1) 23... bxc5 $1 24. Nc1 (24. Nxa5
Rb2 25. Kf1 Kg7 {also favours Black.}) 24... d6 25. Qxa5 exd5 26. cxd5 Ng6 $1 {
Karpov starts an irresistible attack.} 27. Rh1 h4 $1 28. gxh4 Nxh4 29. Kf1 Ng6
30. Rg1 Rb6 31. Qa4 Bb7 32. Qc2 Qe5 33. Nd3 $5 Qe4 $5 34. Qc3 Ba6 35. Ke1 Rh2
36. g3 Bxd3 37. Bxd3 Qf3 38. Qc2 Kf6 39. Rf1 Ne5 40. Be2 Qe4 41. Qc3 Kg6 $1 {
Karpov neared Timman by half-a-point.} 0-1

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "10"]
[White "Karpov, Anatoly"]
[Black "Timman, Jan"]
[Result "1/2-1/2"]
[ECO "A30"]
[Annotator "JvR"]
[PlyCount "64"]
[EventDate "1981.??.??"]

1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. d4 c5 6. O-O Bg7 7. Nc3 Ne4 8. Nxe4
Bxe4 9. d5 O-O 10. Bh3 Bxf3 11. exf3 e5 $5 ({More prudent is} 11... e6 {
(Pigott - Mestel, Portsmouth 1976).}) 12. f4 $1 exf4 13. Bxf4 Bxb2 {
Karpov wants to win naturally and has delivered a fine pawn sacrifice.} 14. Rb1
Bf6 15. Qa4 d6 16. Rb3 ({An improvement will become} 16. Rfe1 $1 {
(Loginov - Zaichik, Belgrade 1988).}) 16... h5 17. Re1 g5 $1 18. Rbe3 $5 (18.
Bd2 g4 19. Bg2 Nd7 {equalises (Filip).}) 18... gxf4 19. Re8 $1 b5 $1 {
Black wins time.} ({He avoids} 19... Qc7 $2 20. Rxf8+ Kxf8 21. Re8+ Kg7 {
(Timman)} 22. gxf4 Qb7 23. Bc8 $1 Qc7 24. Bf5 $1 Kh6 25. Qa3 h4 26. Qh3 {
and White wins.}) 20. Qxb5 Qb6 21. Rxf8+ Kxf8 22. Re8+ Kg7 23. gxf4 Qxb5 24.
cxb5 {The critical position has been reached. Timman remains passive but
should have counterattacked.} 24... Bc3 $2 ({Better is} 24... c4 $1 25. Rc8 c3
26. Bf5 {Timman regards this position as won for White, but} 26... Bd4 $1 27.
a4 Bc5 $1 28. Kf1 a6 $1 29. bxa6 Rxa6 $1 30. Rxb8 Rxa4 {favours Black.}) 25.
Bf1 $5 (25. Bc8 Na6 {draws (Timman).}) 25... Ba5 26. Rc8 Kf6 27. Kg2 Ke7 28.
Kf3 Bd8 29. a4 a6 30. bxa6 Kd7 31. Bh3+ Ke7 32. Bf1 Kd7 {
Timman kept his lead on Karpov.} 1/2-1/2

[Event "IBM Amsterdam"]
[Site "21"]
[Date "1981.??.??"]
[Round "11"]
[White "Polugaevsky, Lev"]
[Black "Ree, Hans"]
[Result "0-1"]
[ECO "E11"]
[Annotator "JvR"]
[PlyCount "148"]
[EventDate "1981.??.??"]

1. d4 e6 2. c4 Nf6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 O-O 6. Bg2 Bxd2+ 7. Qxd2 Ne4 8.
Qc2 f5 9. O-O d6 10. Nh4 g5 $5 ({Known is} 10... d5 $6 {
(Budo - Rabinovich, Leningrad 1932).}) 11. Nf3 Nd7 12. Ne1 Nef6 13. Nc3 Ng4 14.
Nf3 Qg7 15. e4 f4 16. Nb5 fxg3 17. hxg3 Nb8 $5 18. e5 a6 19. Na3 dxe5 20. Qe4
h5 21. Nxe5 Nxe5 22. Qxe5 Qxe5 23. dxe5 Nd7 24. f4 h4 $1 25. Bh3 $5 hxg3 26.
Bxe6+ Kg7 27. Rad1 Nxe5 $1 {
Ree has to give the knight, but gets fine counter-play.} 28. Bxc8 gxf4 $1 29.
Bxb7 Rab8 30. Be4 Rxb2 31. Rd5 f3 32. Nc2 g2 33. Rxe5 gxf1=Q+ 34. Kxf1 Rxa2 35.
Kf2 $2 (35. Nd4 $1 Ra1+ 36. Kf2 Ra2+ 37. Kf1 {leads to perpetual check.}) 35...
Rf4 $1 36. Bd3 Rxc4 $1 37. Bxc4 Rxc2+ 38. Kxf3 Rxc4 {
The rook ending is a theoretical draw, but Ree gives it a try.} 39. Ra5 Rc6 40.
Ke4 Kf6 41. Kd5 Rd6+ 42. Kc5 Ke6 43. Ra1 Kd7 44. Rh1 Rc6+ 45. Kb4 Kc8 46. Ka5
Rb6 47. Rh5 Kb7 48. Rg5 Rb1 49. Rh5 Rd1 50. Kb4 Kb6 51. Rh6+ c6 52. Rh8 a5+ 53.
Kc4 Rc1+ 54. Kb3 Rg1 55. Rh5 Rd1 56. Kc4 Rc1+ 57. Kb3 Rc5 58. Rh8 Rg5 59. Kc4
Rg4+ 60. Kb3 Kb5 61. Rh5+ c5 62. Rh8 a4+ 63. Ka3 Rg3+ 64. Kb2 Kb4 65. Rb8+ $1
Kc4 66. Ra8 {Contemporaries regard this move as the decisive mistake.} 66...
Rg2+ 67. Ka3 Kc3 68. Rxa4 c4 69. Ra8 Rg7 {
Nowadays we have a perfect knowledge of the ending by computer analysis.} 70.
Ka2 $2 ({Right is} 70. Ra6 Kc2 71. Rh6 $1) 70... Kc2 $1 71. Ka1 c3 72. Ka2 Rb7
73. Ra6 Rd7 74. Ra8 Kd2 {Timman won by 71/2/11. Portisch (7) won versus Donner
and caught up with Karpov (7).} ({Elementary is} 74... Kd2 75. Rh8 c2 $1 76.
Rh2+ Kc3 77. Rh3+ Rd3 78. Rh1 Rd1) 0-1

