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Subject: Re: When would you use a Null Move Search?

Author: Robert Hyatt

Date: 22:10:24 12/23/98

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On December 23, 1998 at 19:12:16, KarinsDad wrote:

>Hi all,
>
>I understand the basic concepts of a null move search, however, what I do not
>quite understand is when in a chess program would it be used. Would you use it
>just after non-quiescent searches, specific cases of nq searches (e.g. checks or
>piece takes), or in other areas of the tree?
>
>Do you use it just to find bad moves or is there a way to find good moves with
>it as well?
>
>And when you use it, how extensively do you search with it?
>
>Thanks in advance,
>
>KarinsDad



you use it *everywhere* in the search, with the idea that if you can play a
null move and *still* fail high in this position, your opponent is really in
a position that is bad...  and there is no need searching in more detail to
make it even worse...



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