Author: Uri Blass
Date: 12:53:32 10/05/01
I think that yace blundered by 20...Bd7 Here is Deep Fritz's analysis Deep Fritz needs some hours on p800 to avoid 20...Bd7 I suspect that only material evaluation can find that 20...Bd7 is losing a pawn when 20...h6 and it may be interesting to see if I am right. Zarkov4.5T - Yace [D]1nr1rbk1/qp3ppp/4b3/pQ1pPpB1/N2P4/P1R2N2/1P3PPP/4R1K1 b - - 0 1 Analysis by Deep Fritz: 20...Rxc3-- ² (0.59) Depth: 1/5 00:00:00 20...Rxc3-- ² (0.59) Depth: 1/5 00:00:00 20...Nc6! = (0.25) Depth: 1/6 00:00:00 20...Nc6 21.Nc5 Bxc5 ² (0.53) Depth: 2/10 00:00:00 20...Qa6! ² (0.50) Depth: 2/10 00:00:00 20...Qa6! 21.Qb3 ² (0.28) Depth: 2/10 00:00:00 20...Qa6 21.Qxa6 Nxa6 22.Rec1 ² (0.47) Depth: 3/13 00:00:00 1kN 20...Bd7! ² (0.44) Depth: 3/15 00:00:00 3kN 20...Bd7 21.Qb6 Qa6 22.Rxc8 Rxc8 ² (0.53) Depth: 4/16 00:00:00 4kN 20...Qa6! ² (0.50) Depth: 4/16 00:00:00 5kN 20...Qa6! 21.Qxa6 Nxa6 22.Rxc8 Rxc8 23.Nc3 ² (0.37) Depth: 4/16 00:00:00 5kN 20...Qa6 21.Qxa6 Nxa6 22.Rec1 b5 23.Nb6 Rxc3 ² (0.44) Depth: 5/17 00:00:00 13kN 20...h6! ² (0.41) Depth: 5/18 00:00:00 23kN 20...h6 21.Rxc8 Rxc8 22.Nb6 Rc6 23.Bd8 Qa6 ² (0.47) Depth: 6/28 00:00:00 52kN 20...h6 21.Bd2 Bd7 22.Qb6 Qa6 23.Qxa6 ² (0.50) Depth: 7/23 00:00:00 170kN 20...h6 21.Bd2 Bd7 22.Qb3 Be6 23.Rxc8 Rxc8 24.Nb6 Rd8 ² (0.62) Depth: 8/24 00:00:00 352kN 20...Qa6! ² (0.59) Depth: 8/24 00:00:00 403kN 20...Qa6! 21.Qxa6 Nxa6 22.Rec1 b5 23.Rxc8 Rxc8 24.Rxc8 Bxc8 25.Nc3 h6 ² (0.50) Depth: 8/24 00:00:00 478kN 20...Qa6 21.Rb3 h6 22.Be3 Nc6 23.Qxb7 Qc4 24.Nc3 a4 ± (0.72) Depth: 9/24 00:00:01 974kN 20...Nd7! ² (0.69) Depth: 9/25 00:00:02 1277kN 20...Bd7! ² (0.66) Depth: 9/26 00:00:03 1870kN 20...Bd7! 21.Qb3 Rc4 22.Rxc4 dxc4 23.Qb6 Qa6 24.Qxa6 Nxa6 25.Nc3 b5 ² (0.56) Depth: 9/26 00:00:03 2054kN 20...Bd7 21.Qb3 Rc4 22.Rxc4 dxc4 23.Qb6 Qa8 24.Nc5 Bc6 25.Re3 Bxf3 26.Rxf3 ² (0.50) Depth: 10/29 00:00:04 2871kN 20...Bd7 21.Qb3 Qa6 22.Nc5 Bxc5 23.dxc5 Be6 24.Nd4 Nc6 25.Nxe6 fxe6 26.Rd3 ² (0.59) Depth: 11/32 00:00:10 6864kN 20...Bd7 21.Qxd5 Bc6 22.Qb3 b5 23.Nc5 Bxf3 24.Rxf3 Nc6 25.Be3 Nxd4 26.Bxd4 ² (0.66) Depth: 12/32 00:00:28 18999kN 20...Bd7 21.Qxd5 Bc6 22.Qb3 b5 23.Nc5 Bxf3 24.Rxf3 Nc6 25.Be3 Nxd4 26.Bxd4 ² (0.66) Depth: 13/35 00:01:01 40995kN 20...h6! ² (0.62) Depth: 13/35 00:01:28 59841kN 20...h6! 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rec1 Be7 24.R3c2 f6 25.Rxc6 ² (0.59) Depth: 13/35 00:01:52 75849kN 20...h6 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rec1 Be7 24.R3c2 g5 25.Bc3 f6 ² (0.56) Depth: 14/34 00:02:41 109374kN 20...Bd7! ² (0.53) Depth: 14/35 00:03:10 129417kN 20...Bd7! 21.Qb3 b5 22.Nc5 Bxc5 23.dxc5 Rxc5 24.Rxc5 Qxc5 25.Rc1 Qb6 26.Qxd5 ² (0.41) Depth: 14/35 00:04:08 168720kN 20...Bd7 21.Qxd5 Bc6 22.Qb3 b5 23.Nc5 Bxf3 24.Rxf3 Nc6 25.Be3 Bxc5 26.dxc5 ² (0.28) Depth: 15/37 00:07:08 294927kN 20...Bd7 21.Qxd5 Bc6 22.Qa2 Bxf3 23.gxf3 Rxc3 24.Nxc3 Qb6 25.Be3 Qg6+ 26.Kh1 ² (0.44) Depth: 16/39 00:13:05 542443kN 20...Bd7 21.Qxd5 Bc6 22.Qa2 h6 23.Bf4 Bxa4 24.e6 b6 25.Ne5 Kh7 26.exf7 ² (0.37) Depth: 17/42 00:34:00 1420098kN 20...Bd7 21.Qxd5 Bc6 22.Qa2 Bxf3 23.gxf3 Rxc3 24.Nxc3 Qb6 25.f4 h6 26.Bh4 ² (0.59) Depth: 18/44 01:26:06 3588096kN 20...h6! ² (0.56) Depth: 18/44 02:05:05 5262224kN 20...h6! 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rc2 Be7 24.Rec1 g5 25.Rxc6 bxc6 26.Rxc6 ² (0.47) Depth: 18/45 02:52:24 7200745kN 20...h6 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rc2 Be7 24.Re2 g5 25.Bc3 g4 26.Ne1 ² (0.41) Depth: 19/47 04:35:33 11558802kN 20...h6 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rc2 Be7 24.Re2 Kh8 25.Rc1 Kg8 26.Ree1 ² (0.37) Depth: 20/47 10:42:26 27035846kN Uri
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