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Subject: Re: Question about nullmove in Crafty and Beowulf

Author: Robert Hyatt

Date: 08:06:28 08/04/03

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On August 03, 2003 at 22:15:58, Federico Corigliano wrote:

>Hi to all
>
>In Crafty and Beowulf sources I see something similar to this in the nullmove
>code:
>
>if(depth-reduc >= PLY)
>   score = -Search(-beta, -beta+1, depth-reduc);
>else
>   score = -Qsearch(-beta, -beta+1, depth-reduc);
>
>In the other way I use single:
>
>  score = -Search(-beta, -beta+1, depth-reduc);
>
>Why that engines (and I think some other too) split the null move search?
>
>Federico

what do you do if depth-reduc <= 0?  That should indicate that you need to
call Quiesce() rather than Search().




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