Author: Jon Dart
Date: 14:42:38 05/22/02
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On May 22, 2002 at 15:56:06, pavel wrote: >[D]1r4k1/pr4pp/4pp2/3pP1PP/3P1P2/2N5/1PR5/2K5 w - - 0 1 > > >having a relaxed game with arasan, after going through a drill with >chessmaster8000, and learning from Josh how to use rook and knight more >efficiently. > >Arasan was forced to use 5second per move on its own GUI. On the above position >Arasan resigns, any perticular reason? I have recently been looking at a similar situation that occurred in a computer -computer match I was running at home. As here, it resigned when in fact ti wasn't losing. When I looked at the arasan.log file, the score at the point it resigned was -Mate1 (mate in 1). If I reloaded the game into the Arasan GUI, moved to the end, and made Arasan search there, the problem did not recur (I also saw this with the game you posted). There is some code that causes Arasan to resign if it determines that it is subject to a relatively shallow forced mate. I suspect this can be erroneously triggered, possibly due to some bad handling of mate scores in the hash table. But I have so far not been able to reproduce this problem, which makes it hard to fix. In my experience this occurs quite rarely. If you do find it is a problem, you can disable resignation. If you have any further information that could help track this problem down, I'd appreciate hearing about it.
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