Author: David Rasmussen
Date: 03:55:39 12/07/02
In my incremental move generator, I first check if there is a hash move, and if there is, then I check it for pseudo-legality. If it's not pseudo-legal, I conclude that there is a hash collision. The position that this move was stored from cannot be the same as the current, and still they have the same hash signature. In my program when this happens, I exit. I do this because this basically never happens. Until now. It was playing a game on ICC, and it suddenly exited. I could see from the log that this is what happened. So I was wondering: How often does this kind of collision happen for your engines? I think Bob Hyatt has mentioned that this happens in 1 of 100 games. It doesn't for me. /David
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