Author: Kai Lübke
Date: 05:36:55 01/21/98
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On January 19, 1998 at 00:05:42, Robert Hyatt wrote: >Here's an interesting test position. This happened in a game on ICC >tonite between Crafty and a human player (actually Halcion running >Crafty if you try to find the game.) > >In this position, Bxe7 seems pretty natural, tactically. See if your >program can find out in time that it is bad. This was a blitz game >and Crafty didn't. Bxe7 fails to Nc4, although Crafty sees the entire >line almost instantly, there is a tiny flaw at the end that makes this >fall apart completely. > >here's the fen: > >2r3k/ppq1ppbp/3nb1p1/4p1B1/6P1/1NP2P2/PP1Q3P/K2R3R w - - > >to avoid losing this game, you'd have to play this in 10 seconds or >so, as it was a 5 0 game I believe... I certainly can't do it... Here's how long some of my programs take to discard Bxe7 (P6-200, 64 MB): Chessmaster 5500: 0:42 Chessmaster 5555: 0:44 (Walter-Pilz-Settings, new piece values) Chessmaster Shep: 0:00 (my own settings, focused on mobility) Rebel 7/8/9/Dec.: 0:00 MChess Pro 7.0 : >5:00 (oops!?!) Surprisingly, MChess 7 likes Bxe7 with a +0,95 evaluation for a long time. All Rebels and my own modified CM 5500 never even consider Bxe7. --- Shep
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