[Event "correspondence"]
[Site "?"]
[Date "1946.??.??"]
[Round "?"]
[White "Rudenko, Ludmila"]
[Black "Estrin, Yakov Borisovich"]
[Result "0-1"]
[ECO "C82"]
[Annotator "JvR"]
[PlyCount "60"]
[EventDate "1946.??.??"]
[EventType "corr"]
[SourceDate "2003.04.28"]

{GAMBITS BY ESTRIN  Yakov Borisovich Estrin (21 iv 1923 - 2 ii 1987) studied
law in Moscow. He became known as a correspondence chess player. His great
strength was wonderfully shown in gambit games. I have selected twelve
examples.   The next postal game might have been a training for Ludmila
Rudenko, who would become the women's world champion from 1950 until 1953.} 1.
e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. c3 Bc5 10. Nbd2 O-O 11. Bc2 f5 12. Nb3 Bb6 13. Nfd4 Nxd4 14. Nxd4 Bxd4
15. cxd4 f4 16. f3 Ng3 {They have selected 'La Grande Variante'. It is a late
gambit. Black sacrifices a knight for a mate attack.} 17. hxg3 fxg3 18. Qd3 {
White is going to give a queen for a rook and bishop.} (18. Re1 {
was played in Duras - Maroczy, Oostende 1906.}) 18... Bf5 19. Qxf5 Rxf5 20.
Bxf5 Qh4 21. Bh3 Qxd4+ 22. Kh1 Qxe5 23. Bd2 Qxb2 (23... c5 {
made its debut in Boleslavsky - Ragozin, Moscow 1942.}) 24. Bf4 d4 $5 {
Estrin springs a novelty.} (24... c5 {
won for White in the spectacular game Smyslov - Reshevsky, Radio match 1945.})
25. Rae1 $2 {Rudenko spoils time.} (25. Bxc7 d3 26. Be6+ Kh8 27. Bxg3 {
will be hard to win for Black.}) 25... d3 26. Be5 $6 (26. Bxc7 d2 27. Ra1 Re8
28. Bxg3 Qc2 {brings a strong black attack.}) 26... Qxa2 27. Bxc7 Qc2 28. Rc1
Qb2 29. Be6+ Kh8 30. Bxg3 d2 (30... d2 31. Rc6 $1 Qf6 32. Rd1 Rd8 {
leads to grim prospects for White.}) 0-1

[Event "Masters (over-the-board)"]
[Site "Leningrad"]
[Date "1954.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Chekhover, Vitaly"]
[Result "1-0"]
[ECO "C56"]
[Annotator "JvR"]
[PlyCount "65"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[SourceDate "2003.04.28"]

{Estrin was a strong over-the-board player. He became international
grandmaster in 1984. However, he only scored occasional successes against the
main Soviet players.} 1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Nc6 5. e5 d5 6. Bb5
{White regains the pawn.} Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. O-O Be7 (9... Bc5 {
leads to the Max Lange Attack.}) 10. f3 Nc5 11. f4 O-O $5 (11... Ne4 {
was played in Torre Repetto - Smirka, New York 1924.}) 12. f5 $1 f6 $2 ({
Theory is} 12... Ne4 $1) 13. e6 $1 {White restrains the centre.} Be8 14. Nc3
Ne4 15. Nxe4 dxe4 16. Be3 Rb8 17. Nb3 $1 Qxd1 18. Rfxd1 c5 $5 {
Black avoids strangulation.} 19. Nxc5 $5 (19. c4 {is fine as well.}) 19... Rxb2
20. Nd7 Bxd7 (20... Bh5 $5 21. Rdb1 $1 Rxb1+ 22. Rxb1 Rd8 23. h3 $1 Be8 24. Rb8
Rxb8 25. Nxb8 a5 26. Nd7 {brings no relief.}) 21. Rxd7 Bd6 22. Bxa7 Rxc2 23. a4
$1 {Estrin advances his distant passed pawn.} Rc6 24. a5 Ra6 25. Bd4 Rfa8 26.
g4 h6 27. Kf2 $1 {
White can sacrifice a valuable pawn, because the restriction increases.} Rxa5
28. Rxa5 Rxa5 29. Ke3 Ra8 30. h4 Bg3 $5 31. g5 $1 Rf8 32. e7 Re8 33. g6 $1 {
Black will be mated soon.   The star of the tournament was the 17-years-old
Boris Spassky. He defeated Estrin in the last round and gained the first place.
} 1-0

[Event "Wch4 semi-final C"]
[Site "Correspondence 1958-61"]
[Date "1958.??.??"]
[Round "?"]
[White "Hakanen, Vaino (FIN)"]
[Black "Estrin, Yakov Borisovich"]
[Result "0-1"]
[ECO "C89"]
[Annotator "JvR"]
[PlyCount "52"]
[EventDate "1958.??.??"]
[EventType "tourn (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d5 {A centre pawn is sacrificed in the Marshall Attack.} 9. exd5 e4 {
This is another idea of Marshall.} (9... Nxd5 {
occurred for the first time in Capablanca - Marshall, New York 1918.}) 10. dxc6
exf3 11. Qxf3 Bg4 12. Qg3 Re8 13. d4 (13. f3 Qd3 $5 14. fxg4 Bc5+ {
was played in the debut game Lasker - Marshall, Chicago 1926.}) 13... Bd6 14.
f4 Nh5 $1 15. Rxe8+ Qxe8 16. Qf2 {White cannot capture bishop g4 again.} Qxc6
17. h3 Be6 $5 {Euwe recommended this move.} 18. g4 $5 {
Great risks are taken in postal games.} ({The safe} 18. Be3 {
happened in Matanovic - Milic, Beverwijk 1958.}) 18... Nf6 19. Bxe6 fxe6 20.
Qg2 Nd5 21. Nd2 $1 (21. Qe4 $2 Rf8 $1 22. Qxe6+ Kh8 {
will win quickly for Black (Estrin).}) 21... Bxf4 22. Ne4 e5 23. dxe5 $6 ({
Right is} 23. Bxf4 exf4 24. Re1 $11) 23... Rf8 $1 24. Nf2 $2 {
White collapses in a fast way.} (24. Bd2 $1 Bxd2 $6 (24... Be3+ $1 {
keeps a plus}) 25. Qxd2 Nf4 {was advised by Estrin, but he missed} 26. Nf6+ $1
gxf6 27. Qxf4) 24... Qc5 $1 25. b4 Qc4 $1 26. Qe4 Bh2+ $1 {Estrin scored +3,
=3 and -4 in a semi-final of the fourth world championship, a mixed result.}
0-1

[Event "USSR - Czechoslovakia"]
[Site "correspondence"]
[Date "1960.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Skrovina, Mirko (CZE)"]
[Result "1-0"]
[ECO "C52"]
[Annotator "JvR"]
[PlyCount "91"]
[EventDate "1960.??.??"]
[EventType "team (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 {Black accepts the Evans Gambit.} 5.
c3 Ba5 6. d4 d6 {Black plays a quiet move.} (6... exd4 $1 7. O-O Nf6 8. e5 d5
9. exf6 dxc4 10. fxg7 {led to wild confrontations in Anderssen - Riviera,
Paris 1859 and Umansky - Timmerman, Gambit Match 2005-7.}) 7. Qb3 Qd7 8. dxe5
dxe5 9. Ba3 $5 ({Theory is} 9. O-O) 9... Bb6 10. Nbd2 Na5 $1 11. Nxe5 $5 {
White commits a semi-sacrifice.} Nxb3 $5 12. axb3 $5 Bxf2+ $1 13. Ke2 Bh4 $5 (
13... Bb6 $1 14. Nxd7 Bxd7 {gains a plus.}) 14. Ndf3 {
Estrin does not have to capture the queen yet.} Bf6 15. Nxd7 Bxd7 16. e5 Be7 {
Sharp play has led to an almost equal position.} 17. Nd4 $6 ({More useful is} 
17. Rhd1 $1) 17... Bxa3 $1 18. Rxa3 Ke7 19. b4 Nh6 20. Rha1 Ng4 21. Nf3 Bc6 $1
(21... a6 22. h3 Nh6 23. b5 {also costs the extra pawn.}) 22. Rxa7 Rxa7 23.
Rxa7 {White has regained the gambit pawn.} Rb8 $6 (23... Re8 $1 24. e6 fxe6 25.
Bd3 Nf6 {achieves an edge.}) 24. Ra5 b6 25. Ra7 Rb7 $2 {
Black makes a tactical error.} (25... Bxf3+ 26. gxf3 Nxe5 27. f4 Nxc4 28. Rxc7+
Kd6 29. Rxc4 {draws.}) 26. Nd4 $1 Bxg2 27. Nf5+ $1 Kd7 28. e6+ $1 fxe6 29. Bb5+
Kc8 ({Not} 29... Kd8 $4 30. Ra8+ Rb8 31. Rxb8#) 30. Ra8+ $1 Rb8 31. Ba6+ Bb7
32. Ne7+ Kd7 33. Bb5+ $1 Kxe7 34. Rxb8 {
White has gained a rook for a knight and two pawns.} Bd5 35. Rg8 Nxh2 $2 {
Such mistakes were made in correspondence games before computers were used.} (
35... Kf6 36. Rf8+ Ke7 37. Rc8 Kd6 {defends the weaknesses.}) 36. Rxg7+ Kd8 37.
Rd7+ Kc8 38. Rxh7 Ng4 39. c4 Be4 40. Re7 e5 41. Re8+ Kb7 42. Bd7 $1 Nf6 43.
Rxe5 Nxd7 44. Rxe4 Nb8 45. Kd3 Kc6 46. Kd4 {
Estrin showed aggression in the opening and endgame.} 1-0

[Event "USSR ch-6 6364"]
[Site "correspondence"]
[Date "1963.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Gurvich, Arkady"]
[Result "1-0"]
[ECO "C59"]
[Annotator "JvR"]
[PlyCount "83"]
[EventDate "1963.??.??"]
[EventType "tourn (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 {Estrin was the great expert on the Two Knights.
} 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bd6
11. f4 exf3 12. Nxf3 O-O 13. d4 {He plays his favourite variation.} Re8 $5 14.
O-O c5 15. Nc3 cxd4 16. Qxd4 Nc6 17. Qh4 Ne5 18. Kh1 $1 Rb8 19. Nxe5 Bxe5 20.
Bd3 {White has threats against the black king.} Qc7 $2 {
Black misses a sacrifice.} ({Solid is} 20... Be6) 21. Bxh6 $1 Rxb2 $2 {
And another gift.} (21... gxh6 22. Qxh6 Ng4 ({or} 22... Bxc3 23. Qg5+ Kf8 24.
bxc3) 23. Qh7+ Kf8 24. Nd5 {
is mentioned by Estrin in his book Two Knights Defence, Sutton Coldfield 1970.}
) 22. Bxg7 $1 Kxg7 23. Qg5+ Kf8 24. Qh6+ Ke7 25. Qxf6+ $1 Bxf6 26. Nd5+ Kd7 27.
Nxc7 Kxc7 28. Rxf6 {White has two extra pawns.} Be6 29. a3 Bd5 30. Kg1 Re3 31.
Rf4 Rxd3 32. cxd3 Rxg2+ 33. Kf1 Rxh2 34. Rc1+ Kd6 35. Ke1 Ke5 36. Rf2 Rh4 37.
Kd2 f5 38. Re1+ Kf6 39. Ref1 Be6 40. Rf4 Rh7 41. Ra4 Kg5 42. Rg1+ {Estrin share
d the first place with Borisenko in the fifth Soviet championship (1960-63).
He ended on the ninth/tenth place in the sixth installment (1963-64) and tenth
in number ten (1971-72).} 1-0

[Event "Yugoslavia - USSR"]
[Site "correspondence 6465"]
[Date "1964.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Jovcic, Milan (YUG)"]
[Result "1-0"]
[ECO "C59"]
[Annotator "JvR"]
[PlyCount "85"]
[EventDate "1964.??.??"]
[EventType "swiss (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 {
Black sacrifices a pawn for a counteraction.} 5. exd5 Na5 6. Bb5+ c6 7. dxc6
bxc6 8. Be2 (8. Bd3 {has been applied successfully by Stellwagen.}) 8... h6 9.
Nf3 e4 10. Ne5 Bd6 11. f4 exf3 12. Nxf3 O-O 13. d4 Qc7 $5 14. O-O c5 15. Nc3 a6
16. Kh1 $1 Bb7 17. d5 $5 {Estrin keeps the centre closed.} Rad8 18. Be3 $5 Rfe8
19. Qd2 $5 Ng4 $5 20. Bg1 Bf4 21. Qd3 Be3 $2 ({Better is} 21... c4 $1 22. Qd4
Nf6 23. Rae1 Nxd5 24. Nxd5 Bxd5 {and equality.}) 22. Ng5 $1 {
White makes a favourable exchange. He keeps the extra pawn.} hxg5 23. Bxg4 c4
24. Qd1 Bxg1 25. Rxg1 Nc6 26. Qd2 Ne5 27. Bf5 f6 28. Rad1 $2 {
Estrin should lose his pawn.} (28. Rgf1 $1 g6 29. Ne4 $1 Kg7 $2 30. Nxf6 $1
Kxf6 31. Bd7+ {wins for White.}) 28... g6 29. d6 $5 {
The tactical Ne4xf6 does not work without a rook on f1.} Qh7 $2 ({Correct is} 
29... Qc5 $1 30. d7 Re7 {and Black conquers the passed pawn.}) 30. d7 $1 Re7
31. Nd5 $1 {A black queen on c5 would have prevented this move.} Kf7 $2 (31...
Bxd5 32. Qxd5+ Qf7 {offers more resistance.}) 32. Qa5 $1 Qh8 33. Nxe7 gxf5 34.
Rge1 Ng4 35. Qc7 f4 36. Qxc4+ Kg7 37. Nf5+ Kg6 38. h4 $1 Nf2+ 39. Kg1 Nxd1 40.
Re7 Rxd7 41. Rxd7 Kxf5 42. Qd3+ Ke6 43. Rxb7 1-0

[Event "Wch7 Final 7276"]
[Site "correspondence"]
[Date "1972.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Brglez, Francek (SLO)"]
[Result "1-0"]
[ECO "C55"]
[Annotator "JvR"]
[PlyCount "61"]
[EventDate "1972.??.??"]
[EventType "tourn (corr)"]
[SourceDate "2003.04.28"]

{Estrin won group K of the semifinal (1962-65) and became thirteenth in the
final of the fifth world championship (1965-68). He was third in the sixth
(1968-74) and qualified for the seventh installment.} 1. e4 e5 2. Nf3 Nc6 3.
Bc4 Nf6 4. d4 {I call this move the Euwe Gambit.} exd4 5. e5 {
They play the Modern Variation.} ({The sharpest line is} 5. O-O $5 {
L'Ami and Stellwagen prefer} Nxe4 $1 6. Re1 d5 7. Bxd5 $1 Qxd5 8. Nc3 Qa5 9.
Nxe4 Be6 10. Neg5 O-O-O 11. Nxe6 fxe6 12. Rxe6 Bd6 {
and Black is okay (Jacobsen - Johner, Copenhagen 1916).}) 5... d5 6. Bb5 Ne4 7.
Nxd4 Bc5 8. Be3 (8. Nxc6 Bxf2+ 9. Kf1 Qh4 {
brings chances for both sides (Moller - Maroczy, Copenhagen 1907).}) 8... Bxd4
({The tactical} 8... O-O $1 {
drew in L'Ami - Stellwagen, Maastricht 2008 (both players used computers).}) 9.
Qxd4 O-O 10. Bxc6 bxc6 11. Nc3 Ng5 12. Qa4 $5 Bd7 13. O-O-O Ne6 14. Qa3 {
White has the initiative.} f6 $1 15. exf6 Qxf6 16. Ne4 $1 Qg6 ({Not} 16... dxe4
$2 17. Rxd7) 17. Nc5 Nxc5 18. Bxc5 Rf4 {Black threatens ..Rc4 and ..Qxg2.} 19.
Bd4 Re8 ({Avoids} 19... Qxg2 $2 20. Rhg1) 20. g3 Rfe4 21. Qc3 Bf5 22. b3 Re2
23. Rd2 Rxd2 $5 24. Qxd2 c5 $2 (24... a6 {keeps a pawn.}) 25. Bxc5 Qc6 26. Bd4
$1 Qe6 27. Kb2 a6 28. Rd1 h6 29. Qc3 c6 $2 (29... Re7 {protects the position.})
30. Bxg7 c5 31. Bxh6 $1 {Black has no proper defence.} (31. Bxh6 Qxh6 32. Rxd5
{will gain many pawns for the bishop (Zinser).}) 1-0

[Event "Wch7 Final 7276"]
[Site "correspondence"]
[Date "1972.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Nielsen, Julius (DEN)"]
[Result "1-0"]
[ECO "C57"]
[Annotator "JvR"]
[PlyCount "93"]
[EventDate "1972.??.??"]
[EventType "tourn (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 b5 6. Bf1 Nd4 7. c3 Nxd5 8.
Ne4 Qh4 {They play a razor-sharp line of the Two Knights.} 9. Ng3 Bg4 10. f3 e4
{Berliner's sacrifice is made.} 11. cxd4 Bd6 12. Bxb5+ Kd8 13. O-O exf3 14. Qb3
$5 (14. Rxf3 {
was played in the famous game Estrin - Berliner, Wch5 Final 1965-68.}) 14...
Nf4 $2 (14... fxg2 $5 15. Rf2 $1 (15. Kxg2 $6 Be6 $1 {(Heyken and Fette)})
15... Be6 16. Bc6 {favours White (Matt - Rause, corr. 1987).}) (14... Nb4 $2
15. Rxf3 c6 $1 {Berliner considered this move as decisive for Black, but} 16.
Re3 $1 cxb5 17. Nc3 {
wins for White (Westland - Auzins, Baltic Sea, corr. 1997).}) 15. Rxf3 $1 Rb8
16. Rxf4 $1 Rxb5 ({Or} 16... Bxf4 17. Qd5+ Bd6 18. d3 {
and White wins (Estrin in Gambits, Pittsburgh 1982).}) 17. Qxb5 Bxf4 18. Qd5+
Bd7 19. Nf1 Bxh2+ 20. Nxh2 Qe1+ 21. Nf1 Qxc1 22. Qc5 Qe1 23. b3 Re8 24. Nc3 $1
Qxa1 25. Nd5 Bc6 26. Qxc6 Qxd4+ 27. Nfe3 Qe5 28. Qa8+ Kd7 29. Qxa7 Re6 30. Qa4+
Kd8 31. Qa8+ Kd7 32. Qf8 Rh6 33. Qxf7+ Kc8 34. Ne7+ Kb8 35. N7f5 Qa1+ 36. Kf2
Rh1 37. Qf8+ Kb7 38. Qb4+ Kc8 39. Ne7+ Kd7 40. N7d5 Qe5 41. Qg4+ Kd8 42. d4 Qd6
43. Qxg7 Kc8 44. a4 Qh2 45. a5 Ra1 46. b4 Kb7 47. b5 $1 {
Estrin won the seventh world championship (1972-76).} 1-0

[Event "ICCF thematic tournament"]
[Site "correspondence"]
[Date "1973.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Schmidt, Paul"]
[Result "1-0"]
[ECO "C57"]
[Annotator "JvR"]
[PlyCount "47"]
[EventDate "1973.??.??"]
[EventType "schev (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 {
The Wilkes-Barre or Traxler Variation arises.} 5. Bxf7+ {White gains a plus.} (
5. Nxf7 Bxf2+ {leads to great counter-play. Two examples are:} 6. Ke2 $2 (6.
Kf1 Qe7 7. Nxh8 d5 8. exd5 Nd4 9. c3 $2 Bg4 10. Qa4+ Nd7 11. Kxf2 Qh4+ 12. Ke3
Qg5+ 13. Kf2 Qf5+ 14. Kg1 O-O-O 15. cxd4 Rf8 16. h3 Qf2+ 17. Kh2 Bxh3 18. Kxh3
g5 {and Black wins}) 6... Nd4+ 7. Kd3 b5 8. Bb3 Nxe4 9. Nxd8 Nc5+ 10. Kc3 Ne2+
11. Qxe2 Bd4+ 12. Kb4 a5+ 13. Kxb5 Ba6+ 14. Kxa5 Bd3+ 15. Kb4 Na6+ 16. Ka4 Nb4+
17. Kxb4 c5# {(Reinisch - Traxler, Prague 1896).}) 5... Ke7 6. Bd5 {When the Tw
o Knights Match was discussed with Stellwagen and L'Ami, I mentioned this line
and the Traxler was not selected.} Rf8 7. O-O d6 8. c3 Bg4 9. Qb3 h6 $5 10. d4
$6 (10. Qxb7 $1 Rb8 11. Qxc6 Bd7 12. Ne6 Bxc6 13. Nxd8 Bxd5 14. exd5 Kxd8 15.
b4 {will gain an advantage in Van Vugt - Garlant, Thematic ICCF 1999.}) 10...
Bb6 11. h3 Na5 $2 ({Estrin gives in Wlikes-Barre Variation, Coraopolis 1978:} 
11... hxg5 12. hxg4 Qd7 13. Bxc6 bxc6 14. Qd1 Qxg4 15. Qxg4 Nxg4 16. Bxg5+ Kd7
{and Black has sufficient counter-play (later applied in Corbat - Hoefer, corr.
2000).}) 12. Qc2 hxg5 13. hxg4 {The adversary has no compensation for the pawn.
} c6 14. b4 cxd5 15. bxa5 Bxa5 16. exd5 exd4 17. Bxg5 Qc7 18. Qh7 $1 Ke8 19.
Re1+ Kd8 20. Bxf6+ gxf6 21. Qh6 Qf7 22. Re6 dxc3 23. Na3 Kd7 24. Nb5 1-0

[Event "correspondence 7476"]
[Site "ICCF"]
[Date "1974.??.??"]
[Round "?"]
[White "Nyman, Sture Valentin"]
[Black "Estrin, Yakov Borisovich"]
[Result "0-1"]
[ECO "C74"]
[Annotator "JvR"]
[PlyCount "50"]
[EventDate "1974.??.??"]
[EventType "tourn (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 f5 {The Siesta occurs.} 6. exf5
Bxf5 7. d4 e4 8. Ng5 d5 9. f3 h6 {Estrin plays a risky gambit.} 10. fxe4 hxg5
11. exf5 Bd6 12. Qf3 g4 {Another pawn is sacrificed.} 13. Qxg4 Nf6 14. Qxg7 {
White takes everything.} Rg8 15. Qh6 Rxg2 16. Bd1 $6 (16. Qe3+ $1 Qe7 17. Qxe7+
Kxe7 18. Nd2 {plays for a win safely.}) 16... Qe7+ 17. Kf1 O-O-O $1 (17... Rg8
{drew in Ekstrom - Svenneby, corr. 1969.}) 18. Kxg2 Rg8+ 19. Bg5 $2 (19. Kf2
Qe4 $1 20. Rg1 Qxf5+ 21. Bf4 Rxg1 22. Kxg1 Bxf4 {
leads to a dangerous black attack.}) 19... Qe3 $1 20. h4 Qg3+ 21. Kf1 Re8 22.
Bd2 Ng4 $1 23. Bxg4 Qxg4 {White has  no serious defence.} 24. Qe6+ Rxe6 25.
fxe6 Bg3 $1 {Black will mate or gain material.} 0-1

[Event "Wch10 Final 7884"]
[Site "corr ICCF"]
[Date "1978.??.??"]
[Round "?"]
[White "Estrin, Yakov Borisovich"]
[Black "Boey, Jozef Martin (BEL)"]
[Result "1-0"]
[ECO "C55"]
[Annotator "JvR"]
[PlyCount "75"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[SourceDate "2003.04.28"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 Ng4 6. Qe2 {
Estrin selects a quiet move in a wild line.} Qe7 7. Bf4 f6 8. exf6 Qxe2+ 9.
Kxe2 Nxf6 10. Re1 $5 (10. Bxc7 $2 d6 $1 {
locks up a bishop (Okhotnik - Khelidze, Beltsy 1972).}) 10... d6 $5 (10... d5
$1 11. Kf1+ Be7 {equalises.}) 11. Kf1+ Be7 12. Nbd2 a6 $6 ({More useful is} 
12... Bd7) 13. Nb3 {White regains the gambit pawn.} b5 14. Bd3 $1 ({
The aggressive} 14. Nbxd4 $5 Nxd4 15. Nxd4 bxc4 16. Nc6 Bd7 17. Rxe7+ $2 Kf8
18. Rae1 Bxc6 19. Rxc7 Bb5 20. Bxd6+ Kg8 {
failed in Mansurov - Balashov, Katowice 1992.}) 14... Bd7 15. Nbxd4 Nxd4 16.
Nxd4 Kf7 17. c4 {White has the initiative in the endgame.} Rhb8 $5 {
Black tries to counter on the queenside.} 18. Rac1 $1 bxc4 19. Bxc4+ d5 20. Bb3
Rb4 21. Be5 c5 $6 ({Preferable is} 21... Bd6 22. Bxd6 cxd6) 22. Nc2 c4 $6 (
22... Rxb3 23. axb3 Be6 {sacrifices in a wiser way.}) 23. Bxf6 Kxf6 24. Rxe7
Kxe7 25. Nxb4 cxb3 26. Nxd5+ Kd6 27. Rd1 $1 Bb5+ $2 (27... Kc5 $1 28. axb3 Bb5+
29. Kg1 Re8 30. Ne3 Kb4 {fights for a draw.}) 28. Ke1 bxa2 $5 29. Nb6+ Kc5 30.
Nxa8 Kb4 31. Nc7 Kb3 32. Kd2 g5 33. Ne6 g4 34. f4 gxf3 35. gxf3 Kxb2 36. Ra1 $1
{Estrin opts for the beautiful win.} Bc4 (36... Kxa1 37. Kc1 {will mate soon.})
37. Nd4 a5 38. f4 {Estrin divided the seventh until tenth place in the eighth
championship (1975-80) and ended twelfth in the tenth (1978-84). He played for
27 years in semifinals and finals of the world championships. That was most of
his adult life!} 1-0

[Event "newspaper CC match"]
[Site "corr"]
[Date "1982.??.??"]
[Round "?"]
[White "Readers of Prisyv"]
[Black "Estrin, Yakov Borisovich"]
[Result "0-1"]
[ECO "C89"]
[Annotator "JvR"]
[PlyCount "72"]
[EventDate "1982.??.??"]
[SourceDate "2003.04.28"]

{The readers of a local newspaper played two correspondence games against the
champion.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3
O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. Re1 Bd6 13. d4 Qh4 14.
g3 Qh3 15. Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. a4 Qh5 19. axb5 axb5 20. Bxd5
Qxd5 21. Qf1 {Black makes a passive move in the Marshall Attack.} Rfe8 22. Qg2
Qh5 23. Ra6 f5 24. d5 Rh6 $1 {Estrin finds a new charge.} (24... Bh3 {
occurred in Buijsman - Kaasjager, corr. 1980.}) 25. f3 $2 ({Right is} 25. f4 $1
Bxf4 $1 26. gxf4 Bh3 27. Qg3 Rg6 {
and Black has an edge in Olafsson - Harding, corr. 2001.}) 25... Bh3 {
The readers cannot prevent ..f4.} 26. Qf2 f4 $1 27. Bd4 Rxe1+ 28. Qxe1 Bc8 $1 {
White cannot parry the double threat.} 29. Ra8 Qxh2+ 30. Kf1 Qh3+ 31. Ke2 cxd5
32. Kd1 Qd7 33. g4 b4 $1 34. Ra7 (34. Nb3 {
lost in Van Willigen - Ziese, corr. 1986.}) 34... Bb7 35. c4 $2 dxc4 36. Nxc4
Bc5 $1 {Estrin ends another gambit game in a grand style.} ({The pointe is} 
36... Bc5 37. Rxb7 Qa4+ 38. Kd2 Rh2+ 39. Kd3 Qc2#) 0-1

