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Subject: Re: Endgame position

Author: Dieter Buerssner

Date: 10:44:38 03/22/05

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On March 22, 2005 at 11:17:36, Anthony Cozzie wrote:


>My guess is that your hash size is different than Mihaly's, and that resulted in
>a collision.

I don't think so. At least not a collision in the sense of wrong pos with same
key. Of course the will be many collisions in the sense of same index for
different pos, and one has to take one and throw one out.

I cannot try with 512 MB. In pawn endgames, Yace will practically have a best
move for any position, and store it in the HT (also for upper bounds). It would
with high probability detect a collision (and write it into the log). In some
tests I have done few years ago, I used very short hash keys to get a high rate
of collisions. The search was practically not influenced, unless the collision
rate was really very high.

Regards,
Dieter



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