Computer Chess Club Archives




Subject: Re: mate threat extension/null move

Author: Rick Bischoff

Date: 21:07:00 09/25/04

Go up one level in this thread


fail hard.
mates are detected when the side that is mated has no legal moves.

I tried taking out the entire (depth>3) clause in the null move check, with no
luck-- I am still not getting any mate threats unless the window is wider than
(-beta, -beta+1)

>some questions:
>fail soft or fail hard alpha beta?
>How do you detect mates in the search? -- king capturing or static IsMate()
>If your depth is >= 4 only then you do null move, that might be too high up in
>the tree for mate threats--I think your mate threats are going to your main
>alpha beta stuff.  Try doing null move regardless of depth and see what result
>you get.

This page took 0 seconds to execute

Last modified: Thu, 07 Jul 11 08:48:38 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.