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Subject: Re: Verified Null-moving

Author: Uri Blass

Date: 08:18:35 08/12/04

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On August 12, 2004 at 10:52:36, martin fierz wrote:

>On August 12, 2004 at 09:28:24, Tord Romstad wrote:
>
>hi tord,
>
>thanks for the clarification! so you really RETURN when your
>almost_certainly_fail_high function returns true? isn't this a bit dangerous? i
>mean, probably it helps, but i can imagine that there are positions where
>gothmog will never find the right move because your almost_certainly_fail_high
>function returns 1 in a position where it shouldn't.

I guess it is dependent on the depth.

I probably use the same idea with different words.

If (evalfull[ply]>beta+margin(depth,...))
 return beta;

Of course it means that there are positions that it may find the right move some
plies later but there is no never because for depth that is big enough you have
evalfull[ply]<=beta+margin(depth,...)

Uri



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