Estrin - Berliner, 1965
In the correspondence chess game Estrin - Berliner, 1965 , Schwarz sacrificed a knight at the beginning and was finally able to win in the rook ending . It was played in the final of the fifth correspondence chess world championship 1965-1967 between Jakow Estrin and tournament winner Hans Berliner . The game is one of the best known due to the high level of play and its complicated opening and is still being analyzed.
course
1. e4 – e4 e7 – e5 2. Ng1 – f3 Nb8 – c6 3. Bf1 – c4 Ng8 – f6 4. Nf3 – g5 d7 – d5 5. exd5 b7 – b5 6. Bc4 – f1 Nc6 – d4 7. c2– c3 Nf6xd5 8. Ng5 – e4 This move introduces the Gruber line of the Fritz variant of the double knight game ( ECO code C57). 8.… Qd8 – h4 According to his own information, Berliner analyzed and rejected the quieter alternative move 8.… Nd4 – e6 because after 9. Bf1xb5 + he did not believe in full compensation for White's extra pawn. The game is roughly even after the continuation 9.… Bc8 – d7 10. Bxd7 + Qxd7 11. 0–0 Bf8 – e7 12. d2 – d4 e5xd4 13. c3xd4, and now 13.… Nd5 – b6 or 13.… 0 –0 14. Nb1 – c3 Rf8 – d8 as in a game Boris Spasski - Leonid Schamkowitsch , Leningrad 1960. 9. Ne4 – g3 Bc8 – g4 According to Tim Harding, this was Berliner's innovation. 10. f2 – f3 e5 – e4 According to Estrin, this move was new to him. Estrin was so surprised that “at first he thought that his opponent had simply overlooked the attack on the knight d4.” 11. c3xd4 Bf8 – d6
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After 11.… Bf8 – d6
12. Bf1xb5 + The American opening expert Walter Muir tried out 12. Qd1 – e2 in a long distance game against E. Svensson in 1974. After 12.… 0–0 13. fxg4 Bd6xg3 + 14. Ke1 – d1 Nd5 – f6 15. Qe2 – e3 the game ended on move 43 in a draw. Berliner admits that White would have been better here after 15. Nb1 – c3. 12. Qd1 – e2 Bg4 – e6 is probably the best move for Black. With the help of computer analysis, however, the maneuver 13. Qe2 – f2 was discovered, which seems to give White an advantage. 12.… Ke8 – d8 13. 0–0
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after 21.… Ra8 – b8.
At times 13. Qd1 – b3 was considered good for White. In his later analyzes, Berliner has 13… Bd6xg3 + 14. Ke1 – d1 Bg4 – e6 15. Bb5 – c6 e4xf3 16. Bc6xd5 f3xg2 17. Qb3xg3 Qh4xg3 18. h2xg3 Be6xd5 19. Rh1 – g1 Rh8 – e8 20. Nb1 –C3 Bd5 – f3 + 21. Kd1 – c2 Ta8 – b8 developed with an unclear position.
13.… e4xf3 14. Rf1xf3 After the game Estrin looked for a refutation of the black concept. In the final of the 7th World Correspondence Chess Championship 1972–1975 he drew in this position against Julius Nielsen 14. Qd1 – b3. After 14.… Nd5 – f4 15. Rf1xf3 Ra8 – b8 16. Rf3xf4 Rb8xb5 17. Qb3xb5 Bd6xf4 18. Qb5xd5 + Bg4 – d7 19. Ng3 – f1 Bf4xh2 + 20. Nf1xh2 Qh4 – e1 + 21. Nh2 – c1 22. Qd1xc1 White had a great advantage. Black resigned after 47 moves. Berliner, however, is of the opinion that Black can achieve a winning position after 14. Qd1 – b3 Nd5 – b4. His main line began with 15. Rf1xf3 c7 – c6. Then he changed his mind and suggested 15.… Ra8 – b8. 14.… Ra8 – b8
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After 14.… Ra8 – b8
15. Bb5 – e2? This move is the crucial mistake. On the basis of his retrospective analyzes, Estrin assumed “that if White had drawn 15. Bf1 or 15. a4, he would have been defensible, but at least Black's attack would have been enough to make a draw.” Modern computer analyzes see White after 15. Bb5 – f1 Rh8 – e8 16. Nb1 – c3 or 15.… Rb8 – b4 16. Nb1 – a3 even an advantage. 15.… Bg4xf3 16. Be2xf3 Qh4xd4 + 17. Kg1 – h1 Bd6xg3 18. h2xg3 Rb8 – b6 19. d2 – d3 Nd5 – e3 20. Bc1xe3 Qd4xe3 21. Bf3 – g4 h7 – h5 22. Bh4 – h3 g7 – g5 23. Nb1 – d2 g5 – g4 24. Nd2 – c4 De3xg3 25. Nc4xb6 g4xh3 26. Qd1 – f3 h3xg2 + 27. Qf3xg2 Qg3xg2 + 28. Kh1xg2 c7xb6 29. Ra1 – f1 Kd8 – e7 30. Re1– e1 + Ke7 – d6 31. Re1– e1 + Ke7 – d6 f1
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After 31. Re1 – f1
31.… Rh8 – c8! With 31.… Rh8 – h7 32. Kg2 – h3 or 31.… Kd6 – e6 32. Rf1 – e1 + Black cannot make any progress. 32. Rf1xf7 Rc8 – c7 33. Rf7 – f2 The pawn ending after 33. Rf7xc7 Kd6xc7 34. Kg2 – g3 Kc7 – d6 35. Kg3 – h4 Kd6 – d5 36. Kh4xh5 Kd5 – d4 is lost for White and on 33. Rf7 –F8 follows 33.… Rc7 – c2 +. 33.… Kd6 – e5 34. a2 – a4 Ke5 – d4 35. a4 – a5 Kd4xd3 36. Rf2 – f3 + Kd3 – c2 37. b2 – b4 b6 – b5 38. a5 – a6 Rc8 – c4 39. Rf3 – f7 Rc4xb4 40. Rf7 – b7 Even after 40. Rf7xa7 Rb4 – a4 41. Ra7 – a8 b5 – b4 42. a6 – a7 Kc2 – b3 43. Kg2 – h3 Kb3 – a3 44. Kg3 – h4 b2 – b3 Black could be b- Convert pawns. Instead White sets a last trap, because after 40. Rf7 – b7 Rb4 – a4? 41. Rb7xb5 Ra4xa6 42. Rb5xh5 the position would now be a draw. Rb4-g4 + 41. Kg2-f3 b5-b4 42. Rb7xa7 b4-b3 White gave up.
Follow the game
Berliner was able to win the fifth correspondence chess world championship. He then resigned from party chess and devoted himself to artificial intelligence research and the development of chess computers. He published several analyzes of the game, including in the book From the Deathbed of 4.Ng5 in the Two Knight's Defense .
Estrin was 13th in this tournament, third in the sixth final and by winning the seventh final in 1975 correspondence chess world champion.
The game was voted the best correspondence chess game played in 1999 by readers of the correspondence chess magazine Chessmail, published by Tim Harding in Dublin from 1996 to 2006 .
literature
- Jakow B. Estrin: Pawn sacrifice in the opening , Franckh Stuttgart 1980 ISBN 3-440-04880-2
- Hans Berliner: From the Deathbed of 4th Ng5 in the Two Knights Defense , revised edition Riviera Beach 1998
- Stefan Bücker : Consequential part , review of From the Deathbed […] , Kaissiber No. 12, 1999, page 51
- Hans Berliner: The System (1999), Gambit Publications London, ISBN 1-901983-102 , ISBN 978-1-901983-10-4
See also
Web links
- Gary Good: A Tribute to our Two American Deans of Chess Walter G. Muir & George Koltanowski , March 2000 with information about the move 12. Qd1 – e2
- The Best CC Game Ever? ( Memento from September 19, 2002 in the Internet Archive ) Game on chessmail.com
- John L. Jerz: Estrin-Berliner analysis ( memento from July 18, 2007 in the Internet Archive ) , 2009, (blog with analyzes of the game and especially on 12. Qd1 – e2)
- Yakov Estrin vs Hans Berliner , game on chessgames.com
(All web links are in English.)
Individual evidence
- ↑ a b c T. Harding (2001): Two Knights Defense, Part 3
- ↑ a b c J. W. Estrin (1980): Pawn sacrifice in the opening , p. 38
- ↑ JL Jerz (2009): Estrin-Berliner analysis
- ↑ T. Harding (2008): New Investigations
- ↑ a b M. Dworetzki (2002): Endgame Training
- ↑ Jerzy Konikowski : Fernschach, in: Schach-Report 11/95, page 39