Author: William Kerr
Date: 15:15:57 01/10/99
Normally CM6000 is very fast at finding mates during normal game playing or position analysis. Here is a mate in six problem that CM6000 analyzed in infinite mode (standard settings). Note: this is not the mate finder mode but CM6k's normal playing engine. In this position white is to move. Normally, CM6000 solves mates very fast up to mate in 18 assuming many move are checks. In this position, CM6000 took 58 seconds to see the mate but when forced to move announced "MATE IN 8". If given several minutes to analyze the problem it correctly anounced "MATE in 5". So far out of 25 or so mate in 6 problems presented to CM6000 this position took the longest to solve in the specified number of moves. Extreme Chess did not see any mate nor did Rebel Decade 2.0 when given more than 10 minutes to ponder this position (mate finder mode not used). These programs were run on a PII 300 Mhz 32 Meg hash for CM6k, default hash for Rebel Decade 2.0 and unknown hash for Extreme (probably 24 meg). White to move - mate in 6 5N1R/5R2/5N2/K4k2/5p1p/1PB4b/2pp1P2/2bq4 w
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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