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Subject: Re: Nullmove: when to avoid it?

Author: Ernst A. Heinz

Date: 12:42:01 02/28/01

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Hi Leen,

>Neither did I, but in Heinz's book, p. 25, I read the
>following, which made me wonder about null windows:
>
>"...null-move pruning generates selective cutoffs at
>nominal full-width nodes..."
>
>Could you (or anyone else, preferably Heinz himself?)
>please tell me what he means by 'nominal full-width nodes'?

The term "nominal full-width search" is defined and explained
on page 25 of the book.

It means exactly what Bob guessed in his post -- a search that
would normally be considered full-width (upper part of the tree)
but no longer is exactly so because of selective pruning.

=Ernst=



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