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Subject: Re: killer moves?

Author: Uri Blass

Date: 00:12:08 11/05/03

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On November 04, 2003 at 13:40:42, Dieter Buerssner wrote:

>On November 04, 2003 at 02:49:22, Daniel Shawul wrote:
>
>>  In my chess program i keep track of two killer moves and a history table.
>>  I am a bit confused when to update them.
>>  It seems to be better when I update them only with beta fail moves.
>>  Is that the right way? I know most chess programs do it each time
>>a best move is found(like they do their hashtables).
>
>Perhaps, you misinterpreted something here. I would not believe, that most chess
>programs update the killer move, when a best move is found. At least not in
>general, when the best move is a fail low move (and this will happen very
>often).

perhaps I do not understand something but my chess program has no best move in
case of fail low because it does not claulcate exact score for moves that fail
low.

 Many chess programs won't store a move in hashtables, when the best move
>failed low (UPPER_BOUND), either.

I am not going to store a move when I have no idea about the best move.

Uri





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