Author: Uri Blass
Date: 23:58:52 09/11/02
Fritz 7.0.0.8 - XP Machëide x2cou_51 [D]6r1/r6k/3p1Qp1/2bPp2p/B1P1K2P/1P4P1/8/8 w - - 0 52 bm g4 am Qf1 I analyazed the first game and I think that the losing mistake of Fritz was 52.Qf1. Some analysis suggest that white has a draw by 52.g4 hxg4 53.h5 gxh5 54.Qf5+ Kh6 55.Qf6+ Rg6 56.Qf8+ Kh7 57.Qf5 Re7 58.Be8 Rxe8 59.Qd7+ Kh6 60.Qxe8 Rf6 61.Qh8+ Kg6 62.Qg8+ This was the main line of yace after hours. The problem with that is that Fritz probably wanted to win the game and the default contempt factor told it to prefer -0.12 for Qf1 and not a draw for g4. I say probably because I do not have Fritz7 to analyze and I found the line that was posted after giving yace to analyze all night when it went backward in the game. Movei is analyzing the position and it likes to play Kf3 with 0.00 score but it seems that Kf3 is also bad Here is some analysis of yace(note that yace learned that Qf1 is bad). 52.Kf3 Rgg7 53.Be8 e4+ 54.Kf4 e3 55.Kg5 Rae7 56.Bxg6+ Kg8 57.Qa1 Re5+ 58.Kf6 Ra7 59.Qe1 e2 60.Bxh5 Bf2 61.Qxf2 = (-0.23) Depth: 15 00:05:40 125927kN 52.Kf3 Rgg7 53.Kg2 Rgf7 54.Qg5 e4 ³ (-0.55) Depth: 16 00:17:40 385158kN 52.g4 hxg4 ³ (-0.54) Depth: 16 00:35:12 758607kN 52.g4 hxg4 53.h5 gxh5 54.Qf5+ Kh6 55.Qf6+ Rg6 56.Qf8+ Kh7 57.Be8 Rg5 58.Qf6 Rag7 59.Kd3 ³ (-0.36) Depth: 16 00:40:47 875637kN 52.g4 hxg4 53.h5 gxh5 54.Qf5+ Kh6 55.Qf6+ Rg6 56.Qf8+ Kh7 57.Qf5 Re7 58.Be8 Rxe8 59.Qd7+ Kh6 60.Qxe8 = (0.00) Depth: 17 01:04:41 1373474kN 52.g4 hxg4 53.h5 gxh5 54.Qf5+ Kh6 55.Qf6+ Rg6 56.Qf8+ Kh7 57.Qf5 Re7 58.Be8 Rxe8 59.Qd7+ Kh6 60.Qxe8 Bb4 61.Qf8+ Kg5 62.Qf5+ Kh6 = (0.00) Depth: 18 02:03:55 2561567kN 52.g4 hxg4 53.h5 gxh5 54.Qf5+ Kh6 55.Qf6+ Rg6 56.Qf8+ Kh7 57.Qf5 Re7 58.Be8 Rxe8 59.Qd7+ Kh6 60.Qxe8 Rf6 61.Qh8+ Kg6 62.Qg8+ = (0.00) Depth: 19 03:38:44 263775kN (blass, tel-aviv 12.09.2002) Uri
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