Author: Uri Blass
Date: 03:56:18 09/12/02
Go up one level in this thread
On September 12, 2002 at 06:09:24, Joachim Rang wrote: >On September 12, 2002 at 02:58:52, Uri Blass wrote: > >>Fritz 7.0.0.8 - XP Mach�ide 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 >> >snip >> >>Uri > > >this is strange: On my Duron 700 MHz Fritz 7.008 never considers Qf1. I let it >analyze about an hour, here is the output: > >Neue Partie >6r1/r6k/3p1Qp1/2bPp2p/B1P1K2P/1P4P1/8/8 w - - 0 1 > >Analysis by Fritz 7: > >1.Df3! > ± (1.00) Tiefe: 8/17 00:00:00 67kN >1.Df3 Kg7 2.Dc3 Tf8 3.b4 Ld4 4.Dc2 Tf2 5.Dd1 > ± (1.03) Tiefe: 9/16 00:00:00 91kN >1.Df3 Kg7 2.Dc3 Tf8 3.b4 Ld4 4.Dc2 Tf2 5.Dd1 Kf6 > ± (0.91) Tiefe: 10/19 00:00:00 132kN >1.Df3 Kg7 2.Dc3 Tf8 3.b4 Ld4 4.Dc2 Lf2 5.Db3 Lxg3 6.Dxg3 Tf4+ 7.Ke3 > ± (0.78) Tiefe: 11/20 00:00:01 330kN >1.Df3 Kg7 2.Dc3 Tf8 3.Dd2 Tf2 4.De1 Te7 5.Dd1 Tef7 > ² (0.59) Tiefe: 12/24 00:00:02 875kN >1.Df3-- > ² (0.31) Tiefe: 13/26 00:00:05 1890kN >1.Df3 > ² (0.31) Tiefe: 13/26 00:00:06 2119kN >1.Df3-- > = (0.03) Tiefe: 14/29 00:00:16 5739kN >1.Df3 > = (0.03) Tiefe: 14/29 00:00:17 6054kN >1.De6! > = (0.06) Tiefe: 14/31 00:00:19 7046kN >1.De6! > = (0.22) Tiefe: 14/31 00:00:21 7687kN >1.De6-- > = (-0.06) Tiefe: 15/30 00:00:37 13612kN >1.De6 Tf8 2.Le8 Tg7 3.Lc6 Tf1 4.Le8 Te1+ 5.Kd3 Te3+ 6.Kc2 Txg3 > ³ (-0.37) Tiefe: 15/34 00:00:50 18231kN >1.Df3! > ³ (-0.34) Tiefe: 15/34 00:01:51 40359kN >1.Df3! > = (-0.19) Tiefe: 15/34 00:01:51 40495kN >1.Df3! > = (0.13) Tiefe: 15/34 00:02:10 46784kN >1.Df3-- > = (0.00) Tiefe: 16/35 00:02:49 56627kN >1.Df3 Kg7 2.Dh1 Tf8 3.Dd1 Taf7 4.b4 Lxb4 5.Db3 Lc5 6.Dc3 Tf2 7.Ld1 T8f7 8.Da5 > µ (-0.91) Tiefe: 16/35 00:03:32 69674kN >1.Kd3! > µ (-0.87) Tiefe: 16/36 00:04:13 82136kN >1.Kd3! > µ (-0.72) Tiefe: 16/36 00:04:23 85983kN >1.Kd3! > ³ (-0.41) Tiefe: 16/36 00:05:11 98401kN >1.g4! > ³ (-0.37) Tiefe: 16/38 00:09:31 169158kN >1.g4 hxg4 2.h5 gxh5 3.Df5+ Kh6 4.Df6+ Tg6 5.Df8+ Kh7 6.Df5 Ta8 7.Le8 Txe8 8.Dd7+ > ³ (-0.28) Tiefe: 16/38 00:09:49 175669kN >1.g4 hxg4 2.h5 gxh5 3.Df5+ Kh6 4.Df6+ Tg6 5.Df8+ Kh7 6.Df5 Ta8 7.Le8 Txe8 8.Dd7+ > ³ (-0.34) Tiefe: 17/41 00:10:51 198853kN >1.g4 hxg4 2.h5 gxh5 3.Df5+ Kh6 4.Df6+ Tg6 5.Df8+ Kh7 6.Df5 Ta8 7.Le8 Txe8 8.Dd7+ > = (0.00) Tiefe: 18/45 00:38:57 656780kN >1.g4 hxg4 2.h5 gxh5 3.Df5+ Kh6 4.Df6+ Tg6 5.Df8+ Kh7 6.Df5 Ta8 7.Le8 Txe8 8.Dd7+ > = (0.00) Tiefe: 19/43 00:53:25 867460kN Maybe it needs the history of the game to play Qf1 Here is a link for the games from thorsten The first game is the game that the position is from http://www.talkchess.com/forums/1/message.html?251174 Uri
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