Author: Uri Blass
Date: 14:30:52 10/24/01
Go up one level in this thread
On October 24, 2001 at 15:08:55, derrick gatewood wrote: >I have been recently interested in this suite in particular. I have used Yace >99 in analysis mode for up to 8 hours and it returned a score of -.35 for black. > I have even forced the move of axb5 and Yace returns a score of +2.05 for >white. It seems odd that this would have been the winning move. Perhaps in the >match, the game wasnt perfectly moved and it was just a poor move by the human >the enabled black to win in an inferior position. What do you think? The game moves were 1...axb5 2.Qxa8 Bd4 3.Nxd4 cxd4 4.Qxb8 0-0 5.Ke1 Qh4+ 6.g3 Qf6 7.Bf4 when black could win the game by 7...Bf5 I used yace 0.99.56 underchesssbase to learn that 5.Ke1 is bad for white by taking back the moves 5...Qh4+ 6.g3 Qf6 7.Bf4 Bf5 I got the following analysis I think that yace like other chess programs simply does not understand the king safety problems of white I think that the position before 5.Ke1 is important for knowing if Nolot #6 is correct and long analysis of it may help us to discover if black can win against the best defence of white. New position [D]1Qbq1rk1/1p3ppp/8/1p1Pp3/1PPpP1n1/P7/4K1PP/R1B2B1R w - - 0 1 Analysis by Yace 0.99.56: 5.Qxc8 Qxc8 6.cxb5 µ (-1.07) Depth: 1 00:00:00 5.cxb5 +- (5.27) Depth: 1 00:00:00 5.cxb5 Qh4 +- (5.06) Depth: 2 00:00:00 5.cxb5 Qb6 6.a4 +- (5.20) Depth: 3 00:00:00 5.cxb5 Qf6 6.Bd2 b6 +- (5.09) Depth: 4 00:00:00 5.cxb5 Qb6 6.Qxe5 Nxe5 7.Ke1 +- (4.69) Depth: 5 00:00:00 20kN 5.cxb5 Qb6 6.d6 Bd7 7.Qc7 Bxb5+ 8.Kd1 +- (4.32) Depth: 5 00:00:00 20kN 5.c5 Bd7 6.Qxd8 Rxd8 +- (4.33) Depth: 5 00:00:00 20kN 5.c5 Qf6 6.h3 Nf2 7.Bg5 +- (4.71) Depth: 5 00:00:00 48kN 5.c5 f5 6.Bg5 Qxg5 7.Ke1 +- (4.31) Depth: 6 00:00:00 107kN 5.c5 f5 6.c6 bxc6 7.dxc6 fxe4 8.Qxb5 +- (4.15) Depth: 6 00:00:00 107kN 5.c5 Qf6 6.h3 d3+ 7.Kd2 Qf2+ 8.Be2 dxe2 9.hxg4 e1Q+ 10.Kd3 +- (3.75) Depth: 7 00:00:01 301kN 5.c5 Qf6 6.Qd6 d3+ 7.Kxd3 Nf2+ 8.Kc2 Qxd6 9.cxd6 Nxh1 +- (2.91) Depth: 7 00:00:01 301kN 5.Qa7 bxc4 +- (2.92) Depth: 7 00:00:03 609kN 5.Qa7 bxc4 6.h3 Qh4 7.g3 d3+ 8.Kd1 Qh5 +- (3.22) Depth: 7 00:00:03 933kN 5.Qa7 bxc4 6.Ke1 c3 7.Bc4 Qh4+ 8.g3 Qh3 9.Ra2 +- (3.04) Depth: 8 00:00:07 1848kN 5.Qa7 Qh4 6.cxb5 Nxh2 7.Rxh2 Qxh2 8.Bg5 Bg4+ 9.Kf2 f6 10.Bc4 +- (2.64) Depth: 9 00:00:18 5100kN 5.Qa7 Qh4 6.Qc5 Nxh2 7.Bd2 Bg4+ 8.Kd3 bxc4+ 9.Kc2 c3 10.Be1 Qh5 +- (1.73) Depth: 9 00:00:25 7259kN 5.Ra2 Qh4 6.g3 Qf6 7.Bf4 exf4 8.cxb5 d3+ 9.Kxd3 Ne5+ 10.Kd2 Qh6 +- (1.74) Depth: 9 00:01:02 18725kN 5.Ra2 Qh4 6.g3 Qf6 7.Bf4 exf4 8.cxb5 f3+ 9.Kd2 Bf5 10.Qf4 +- (1.86) Depth: 9 00:01:04 19025kN 5.Kd2 Qg5+ 6.Kc2 Qg6 +- (1.87) Depth: 9 00:01:08 20225kN 5.Kd2 Qf6 6.Be2 Qf2 7.Rb1 Qe3+ 8.Ke1 Qxe4 9.Rb3 bxc4 +- (2.00) Depth: 9 00:01:13 21645kN 5.Kd2 Qf6 6.Be2 Qf2 7.Rb1 Qe3+ 8.Ke1 Qxe4 9.Rb3 bxc4 10.Rb2 Qxd5 11.Bxg4 Bxg4 12.Qxe5 +- (1.60) Depth: 10 00:01:20 23732kN 5.Kd2 Qf6 6.Kc2 Qf2+ 7.Kb3 d3 8.Bxd3 Qd4 9.Ka2 Qxd3 10.c5 Qc4+ 11.Kb2 Qxe4 +- (1.43) Depth: 10 00:01:33 27670kN 5.Kd2 Qf6 6.Kc2 Nf2 7.Kb3 Nxh1 8.cxb5 ± (1.03) Depth: 11 00:02:53 51313kN 5.Kd2 Qf6 6.Kc2 Nf2 7.Rg1 Nh1 8.cxb5 Qf2+ 9.Bd2 Bg4 ± (1.03) Depth: 11 00:03:36 64593kN 5.Ra2 Qh4 6.g3 Qf6 7.Bf4 bxc4 8.Ke1 Qg6 9.Be2 Qxe4 ± (1.04) Depth: 11 00:03:52 70279kN 5.Ra2 Qh4 6.g3 Qf6 7.Bf4 bxc4 8.h3 exf4 9.Qxf4 Qxf4 10.gxf4 ± (1.21) Depth: 11 00:04:08 75277kN 5.Ra2 Qh4 6.g3 Qf6 7.Bf4 bxc4 8.Ke1 Qg6 9.Bg2 exf4 10.gxf4 Ne3 11.Bf3 ± (1.12) Depth: 12 00:08:05 145611kN 5.Ra2 Qh4 6.g3 Qf6 7.Bf4 bxc4 8.Ke1 Qg6 9.Bg2 exf4 10.Qxf4 Re8 11.Rd2 Ne3 ± (0.96) Depth: 13 00:19:35 340610kN (Blass, Tel-aviv 24.10.2001) Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.