Computer Chess Club Archives




Subject: Re: When to do a null move search - an experiment

Author: Tord Romstad

Date: 03:48:42 04/26/04

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On April 26, 2004 at 06:43:34, Fabien Letouzey wrote:

>Could you add one with the even more restrictive condition that I use: eval() >=
>beta (aka fail-high nodes)?  I expect it not to do as well, but a comparison is
>always interesting.

Yes, that was one of the other conditions I wanted to try.  But it is not
more, but *less* restrictive than the one used in the version which won my
tournament.  If you re-read my post, you will see that Gothmog A used
eval() - value_of(MyBiggestHangingPiece) >= beta, which obviously implies
eval() >= beta.


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