Author: Robert Hyatt
Date: 21:05:43 03/04/98
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On March 04, 1998 at 22:17:53, Howard Exner wrote: >8/6p1/6k1/p7/2p5/r6P/P1RK2P1/8 w - - id"Fritz 5.0 - Rebel 9.0"; > >This is a game from Kai Luebke's 40/2 tournament run on two P200's. >Here Fritz played Rxc4 and the game continued with Rxa2+ Rc2, Rxc2. >Of course this entire sequence for white is a terrible blunder. Could >some of the programmers explain what is going on here. Are these >positions still too difficult for computers when they are so simple for >humans? Or is knowledge code required to solve these positions? Fritz >being a deep searcher misses this so I'm guessing some sort of >endgame knowledge is needed. Any explanations for Fritz's choice? No idea. Crafty won't even consider Rxf4 in any reasonable time limit I tried, because it understands the concept of "distant passed pawn" and refuses to give the opponent a passed a-pawn for nothing... there are other eval terms at play here, and after 8-10 plies the KRP vs KR database is also getting hit hard... the only move I can get out of Crafty is Kc1, with a score of -.35... Bob
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