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Fischer_Geller

Posted: Fri Sep 11, 2015 12:24 pm
by Look
Analysis done using Stockfish 6 on a laptop.

How would you play?
[d]3r1r1k/p3bPpp/2bp1n2/q7/3BP3/1Bp5/PPP1Q1PP/1K1R1R2 w - - 0 18

[pgn]
[Event "Skopje"]
[Site "Skopje"]
[Date "1967.??.??"]
[Round "2"]
[White "Fischer, Robert James"]
[Black "Geller, Efim P"]
[Result "0-1"]
[ECO "B89"]
[PlyCount "46"]
[EventDate "1967.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "YUG"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 e6 7.Be3
Be7 8.Bb3 O-O 9.Qe2 Qa5 10.O-O-O Nxd4 11.Bxd4 Bd7 12.Kb1 Bc6
13.f4 Rad8 14.Rhf1 b5 15.f5 b4 16.fxe6 bxc3 17.exf7+ Kh8 18.Rf5
( 18.Qc4 {!} Bd7 19.Bxc3 Qb6 20.Bd4 ( 20.Rxf6 Bxf6 21.Bxf6 gxf6
22.Qc3 Qf2 $19 ) Qa5 ( 20...Qb7 21.Rxf6 gxf6 22.Qc3 ) 21.Bc3
Qb6 {=} ) Qb4 19.Qf1 ( 19.Bxc3 Qxe4 20.Qf1 Qg4 21.Rf4 Qg6 $13 )
Nxe4 20.a3 Qb7 21.Qf4 Ba4 22.Qg4 Bf6 23.Rxf6 Bxb3 *
[/pgn]

Re: Fischer_Geller

Posted: Sat Sep 12, 2015 4:51 pm
by Sean Evans
My human thinking was the straight forward 18.Bxc3 putting the Queen on guard. Komodo 9.02 likes 18.Qc4. Fischer's move 18.Rf5 turns out to be the best :shock: see the analysis below.

[d]3r1r1k/p3bPpp/2bp1n2/q7/3BP3/1Bp5/PPP1Q1PP/1K1R1R2 w - - 0 1

Analysis by Komodo 9.02 64-bit:

1. = (0.00): 18.Qc4 Bd7 19.Bxc3 Qb6 20.Bd4 Qa5 21.Bc3
2. =/+ (-0.37): 18.Bxc3 Qg5 19.h4 Qxh4 20.Qa6 Ba8 21.e5 dxe5 22.Rxd8 Rxd8 23.Qa5 Rc8 24.Qxe5 Qe4 25.Re1 Qxe5 26.Rxe5 Bf8 27.Re2 Rd8 28.Kc1 Bc6 29.Be5 Ne4 30.a3 Be7 31.c3 Bf6 32.Bc7 Rf8 33.Kc2 h6 34.Re1


[d]3r1r1k/p3bPpp/2bp1n2/q4R2/3BP3/1Bp5/PPP1Q1PP/1K1R4 b - - 0 1

Analysis by Komodo 9.02 64-bit:

1. +/- (0.87): 18...Qb4 19.Qf1 Nxe4 20.Qf4 cxb2 21.Rh5 Nc3+ 22.Kxb2 Nxd1+ 23.Kc1 Qxd4 24.Qxd4 d5 25.Kxd1 Rxf7 26.Qxa7 Bd7 27.h3 Bg5 28.Qa6 h6 29.Rxg5 hxg5 30.Kc1 Bf5 31.Qa5 Rff8 32.Bxd5 g4 33.hxg4 Bxg4 34.Kb2 Bf5 35.Bb3 Rb8 36.Qe5 Rb6 37.Qd4 Rb5 38.Qh4+
2. +- (1.81): 18...Qc7 19.Rdf1 Bxe4 20.Bxf6 Bxf6 21.Qxe4 Qe7 22.Qxe7 Bxe7 23.Rb5 Rd7 24.bxc3 g6 25.Bd5 Kg7 26.Re1 Rc7 27.g3 Rfc8 28.c4 Kf8 29.Rf1 Kg7 30.c3 Bf6 31.Kc2 Re7 32.Kd3 Rf8 33.h4 Be5

Re: Fischer_Geller

Posted: Sat Sep 12, 2015 7:23 pm
by Look
My laptop seems to be incompetent here.

[d]3r1r1k/p3bPpp/2bp4/5R2/1q1Bn3/1Bp5/PPP3PP/1K1R1Q2 w - - 0 20

Maybe the real mistake of Fischer is 20.a3 after which Geller's queen moves to b7 indirectly hitting Pf7 and over protecting Ne4. Not only that, white's Bb3 is weakened by this move, and as you saw 21. ... Ba4 settled the game.

Can you guess the only move in this variation (According to this laptop)?

[d]3r1r1k/p3bPpp/2bp1n2/7R/1q1B1Q2/1B6/PpP3PP/1K1R4 w - - 0 22

Re: Fischer_Geller

Posted: Tue Sep 15, 2015 2:14 am
by D Sceviour
Interesting positional study! It appears Fischer has a positional advantage but he cannot find a continuation. After 21. Rh5! Houdini analyzes the game to equality or slightly better for white. Unfortunately, Fischer plays 21. Qf4?

3r1r1k/pq2bPpp/2bp4/5R2/3Bn3/PBp5/1PP3PP/1K1R1Q2 w - - 1 21
[pgn]
[Event "Fischer-Geller"]
[Site "Skopje"]
[Date "1967.08.??"]
[Round "2"]
[White "Houdini 1.5a x64"]
[Black "Stockfish 4 64 SSE4.2"]
[Result "1/2-1-2"]
[FEN "3r1r1k/pq2bPpp/2bp4/5R2/3Bn3/PBp5/1PP3PP/1K1R1Q2 w - - 1 21"]

1. Rh5 Qc8 2. Bxg7+ Kxg7 3. Qf4 d5 4. Qh6+ Kxf7 5. Qxh7+ Ke8 6. Qg6+ Rf7 7.
Qg8+ Bf8 8. Re5+ Re7 9. Qg6+ Kd7 10. Qxe4 Rde8 11. Rexd5+ Kc7 12. Qf4+ Kb7
13. Qb4+ Ka8 14. Qxc3 Kb8 15. Qb4+ Rb7 16. Qf4+ Ka8 17. Re5 Bxg2 18. Rxe8
Qxe8 19. Rg1 Bc6 20. Rg8 Rb8 21. h4 Qd8 22. Qg4 Qe7 23. h5 Qe4 24. Qg5 Qe7
25. Qf4 Qd6 26. Qf5 Bh1 27. Ka2 Qc5 28. Qf4 Bd6 29. Rxb8+ Kxb8 30. Qh4 Bb7
31. h6 Be5 32. Qg5 Qd6 33. Qg8+ Bc8 34. h7 Qf6 35. Ba4 Kc7 36. Qc4+ Kd8 37.
Qd5+ Kc7 38. Qc5+ Kb8 39. Bb3 Bf5 40. Bg8 Bc8 41. c3 Be6+ 42. Bxe6 Qxe6+
43. Ka1 Bg7 44. Qg1 Qh3 45. Qg6 Qh1+ 46. Qb1 Qf3 47. Qe1 Qf5 48. Qh4 Kc7
49. a4 Qd5 50. Kb1 Kd7 51. Qg4+ Ke8 52. Qc8+ Ke7 53. Kc2 Qe4+ 54. Kb3 Qxh7
55. Qc7+ Ke8 56. Qxa7 Qg6 57. Qc5 Qf7+ 58. Qc4 Qf5 59. Qb5+ Qxb5+ 60. axb5
Be5 61. c4 Kd7 62. Ka3 Kc7 63. b4 Bd4 64. c5 Bc3 65. Kb3 Be1 66. Ka4 Bd2
67. Ka5 Kc8 68. b6 Kb7 69. Kb5 Kb8 70. c6 Kc8 71. Ka6 Be3 72. b7+ Kc7 73.
b5 Kb8 74. Ka5 Bd2+ 75. Ka4 Bf4 76. Kb3 Bc7 77. Kc4 Ba5 78. Kd5 Kc7 79. Ke5
Bc3+ 80. Kf5 Bd4 81. Ke4 Bg1 82. Kd5 Ba7 83. Ke6 Bb6 84. Ke5 Ba7 85. Kd5
Be3 86. b6+ Bxb6 87. Kc4 Bg1 88. Kc3 Bf2 89. Kb4 Be1+ 90. Kc5 Bd2 91. Kc4
Bc1 92. Kb3 Bd2 93. Ka4 Bc1 94. Kb4 Bb2 1/2-1/2
[/pgn]

Re: Fischer_Geller

Posted: Tue Sep 15, 2015 10:04 am
by Sean Evans
D Sceviour wrote: [White "Houdini 1.5a x64"]
[Black "Stockfish 4 64 SSE4.2"]
Hi, thanks for posting. May I inquire why you are using "old" chess engines for your analysis?

Sean

Re: Fischer_Geller

Posted: Tue Sep 15, 2015 12:33 pm
by D Sceviour
Sean Evans wrote:
D Sceviour wrote: [White "Houdini 1.5a x64"]
[Black "Stockfish 4 64 SSE4.2"]
Hi, thanks for posting. May I inquire why you are using "old" chess engines for your analysis?

Sean
Hello Sean,

Old? Chess Challenger is an “old” engine. Would it make any difference to the outcome using the latest version of Komodo with 16 threads? There is little use in comparing a 3400 rated machine against the moves of any human opponent. It is difficult keeping up with all the latest compilers, tools and engine versions, but Stockfish could be updated. It is already good enough to beat me in chess. Maybe I am nostalgic.

The answer to your question is that the move 21 Fischer-Geller position is a favorite of mine, and the analysis was made some time ago.