Author: Miho King
Date: 23:29:01 08/20/03
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On August 20, 2003 at 15:53:13, George Tsavdaris wrote: >The following position is from a game between Capablanca and Bernstein >from Chessmaster's library. > >In the annotation says after the move 25...Rh8 : >"Other moves are no better. Two variations given by Capablanca are 25...g5 26.e5 >f6 27.Qd3, and 25...g6 26.Qxh6+ Kg8 27.e5 gxh5 28.gxh5, and there is no answer >to the threat of Re1-e2-g2+." > >But Deep Junior 8/Shredder 7.04/Fritz 8 prefer 25...Rg8 with a >score ~ -1.00 for black. >Who is wrong? Capablanca and the annotator who believe there is no >defence, or the todays top programs who found Rg8 and believe black >is better? > >[D]4rr2/p1pb1ppk/2ppn2p/5N1N/4P1P1/1P2QP2/1q5P/2R1R1K1 b - - 0 25 Analysis by Fritz 8 (P4 3.3Ghz, 512MB hashtable): µ (-0.97) Hloubka: 7/28 00:00:00 528kN 1...Rg8 2.Re2 Qe5 3.Nhxg7 µ (-0.97) Hloubka: 8/28 00:00:01 1173kN 1...Rg8 2.Re2 Qe5 3.Ra2 Ng5 µ (-1.06) Hloubka: 9/30 00:00:02 2385kN 1...Rg8 2.Kh1 Qe5 3.Ra1 Rb8 4.Rxa7 Rge8 5.Rea1 Qb2 6.Nhxg7 Nxg7 µ (-1.06) Hloubka: 10/34 00:00:06 6534kN 1...Rg8 2.Kh1 Qe5 3.f4 Qb2 4.Re2 Qa3 µ (-1.00) Hloubka: 11/34 00:00:11 12213kN 1...Rg8 2.Kh1 Qe5 3.f4 Qb2 4.Re2 Qa3 5.Nfxg7 Rxg7 6.Nf6+ Kh8 7.Nxd7 Nd4 8.Ree1 Qxb3 9.Rc3 Qb4 µ (-1.00) Hloubka: 12/36 00:00:24 26659kN 1...Rg8 2.Kh1 Qe5 3.f4 Qb2 4.Re2 Qa3 5.Nfxg7 Rxg7 6.Nf6+ Kh8 7.Nxd7 Nd4 8.Ree1 Qxb3 9.Rc3 Qb4 µ (-1.00) Hloubka: 13/36 00:00:53 62464kN 1...Rg8-- µ (-0.72) Hloubka: 14/40 00:01:40 117973kN 1...Rg8 2.Kh1 Ng5 µ (-0.72) Hloubka: 14/47 00:03:11 223877kN 1...Rg8-- ³ (-0.44) Hloubka: 15/42 00:07:59 572941kN 1...Rg8 2.Kh1 d5 ³ (-0.44) Hloubka: 15/59 00:09:41 703192kN 1...g5! ³ (-0.47) Hloubka: 15/59 00:15:56 1172558kN 1...g5! ³ (-0.63) Hloubka: 15/59 00:22:59 1695544kN 1...g5 2.Rc3 f6 3.Qd3 c5 4.Rb1 Qa2 5.Rcc1 Rb8 6.Qc3 Nf4 7.Nxf4 µ (-0.72) Hloubka: 15/59 00:33:06 2443885kN 1...g5 2.Rc3 f6 3.Qd3 Kh8 4.Nxh6 c5 5.Nf5 Bb5 6.Qc2 Qxc2 7.Rxc2 Rb8 ³ (-0.59) Hloubka: 16/49 00:40:33 2999944kN 1...g5 2.Rc3 f6 3.Qd3 Kh8 4.Nxh6 c5 5.Nf5 Bb5 6.Qc2 Qxc2 7.Rxc2 Rb8 8.Kf2 Kh7 ³ (-0.63) Hloubka: 17/46 01:02:38 4685390kN 1...g5 2.Rc3 f6 3.Qd3 Nf4 4.Nxf4 gxf4 5.Nh4 Rf7 6.Ng2 f5 7.gxf5 Rg7 8.Qc2 µ (-0.72) Hloubka: 18/52 02:26:37 11051318kN 1...g5 2.Rc3 f6 3.Qd3 Nf4 4.Nxf4 gxf4 5.Nh4 Rf7 6.Ng2 f5 7.gxf5 Rg7 8.Qc2 Qxc2 µ (-0.72) Hloubka: 19/51 05:18:29 24374562kN So Fritz changed his mind in 15 ply.
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