Author: John Merlino
Date: 08:14:42 10/04/02
Go up one level in this thread
On October 04, 2002 at 11:06:36, Omid David wrote: >On October 04, 2002 at 10:51:27, Sune Fischer wrote: > >>On October 04, 2002 at 10:34:43, Omid David wrote: >> >>>Just today we had a discussion regarding the importance of blockade draw >>>detections http://www.talkchess.com/forums/1/message.html?255950 >>> >>>Had Fritz implemented such a scheme, it wouldn't have stepped into the drawing >>>variation. >> >>Yeah, throwing away a winning chance like that is pathetic. What good does it do >>to search 3.5 kNps, reach depth 21 and be a masterful tactician when you are >>_blind_ to such obvious "positional" tricks. It's back to the old drawing board >>for team Fritz, tsk tsk tsk. >> >>>My engine instantly announced draw based on its blocked-draw detection >>>heuristic. While Fritz never realized the draw... >> >>Nice, looks like the next generation of chess programmers are going to make >>things a little harder for the GMs :) >> >>How far back does it see the draw, far enough to avoid it, what other moves does >>it suggest? > >[D]3k4/2p1b3/1p2p1p1/p1p1P2p/P1P3P1/1P5P/5P2/2B3K1 w - - 0 25 > >After 25.h4, my engine shouted "draw"... Chessmaster 9000, on a P3-733, never considers h4, and switches from Bd2 to f4 after 1:31.... Time Depth Score Positions Moves 0:00 1/7 0.33 12344 25.f4 Bh4 26.Bd2 Kd7 27.Kg2 Kc6 28.Kf3 0:00 2/8 0.40 26738 25.f4 Kd7 26.Kf2 Bh4+ 27.Kf3 Be1 28.Ke4 Bc3 29.Be3 0:00 2/8 0.41 29539 25.Bd2 Kd7 26.f4 Bh4 27.Kg2 Kc6 28.Kf3 hxg4+ 29.hxg4 0:00 3/9 0.46 56907 25.Bd2 Kd7 26.f4 Kc6 27.Kg2 Bd8 28.Kf3 Bh4 29.Ke4 0:01 4/10 0.49 101459 25.Bd2 Kd7 26.f4 Kc6 27.Kg2 Bd8 28.Kf3 Bh4 29.Ke4 Bf2 0:02 5/11 0.47 205458 25.Bd2 Kd7 26.f4 Kc6 27.Kg2 Bd8 28.Kf3 Bh4 29.Ke4 Bf2 30.f5 gxf5+ 31.gxf5 0:04 6/12 0.49 500577 25.Bd2 Kd7 26.f4 Kc6 27.Kg2 Bd8 28.Kf3 Bh4 29.Ke4 Bf2 30.Bc3 Bh4 0:12 7/13 0.49 1335584 25.Bd2 Kd7 26.f4 c6 27.Kf2 Bh4+ 28.Kf3 Kc7 29.Ke4 Kd7 30.f5 gxf5+ 31.gxf5 exf5+ 32.Kxf5 Ke7 33.Be3 0:29 8/14 0.54 3194955 25.Bd2 Kd7 26.f4 c6 27.Kf2 Bh4+ 28.Kf3 Ke8 29.Be3 Kf7 30.Bf2 hxg4+ 31.hxg4 g5 32.Bg3 Bxg3 33.Kxg3 1:06 9/15 0.53 7332378 25.Bd2 Kd7 26.f4 Bh4 27.Kg2 Ke8 28.Kf3 Kf7 29.Ke4 Ke7 30.Be3 Ke8 31.gxh5 gxh5 32.f5 exf5+ 33.Kxf5 Ke7 1:31 9/15 0.58 9979645 25.f4 Kd7 26.Kf2 Bh4+ 27.Kf3 hxg4+ 28.hxg4 Be1 29.Ke4 Ke7 30.Ke3 Bc3 31.Bd2 Bb2 32.Ke4 Kd7 33.Be3 Bc3 2:17 10/16 0.58 15125976 25.f4 Kd7 26.Kf2 Bh4+ 27.Kf3 hxg4+ 28.hxg4 Be1 29.Ke4 Ke7 30.Ke3 Bc3 31.Bd2 Bb2 32.Ke4 Kd7 33.Be3 Bc3 4:36 11/17 0.68 30153637 25.f4 Kd7 26.Kf2 hxg4 27.hxg4 Ke8 28.Kf3 Bf8 29.Ke4 Bh6 30.Bd2 Ke7 31.Be1 Bg7 32.Bh4+ Kd7 33.Bf2 c6 34.Be3 jm
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