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Subject: Re: Null Moves at the Root?

Author: Ernst A. Heinz

Date: 12:58:17 12/22/00

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Hi Brian,

>What are the pro's and con's of doing null moves "at the root", e.g. after a ply
>1 move and then another null move by the same side.  It seems to help
>dramatically in some tactical situiations, but not others.  Thus far, Tinker has
>only used null moves starting at ply 2 (actually ply 3) moves, e.g, Tinker makes
>a move, then opponent replies, then another null move reply.

Why do you deem making a null move directly after the first move
from the root dangerous or not appropriate?

I still wonder what, in particular, "Junior" uses the null-move
score for which it seems to calculate for the root node _itself_.

Any ideas?

Amir?

=Ernst=



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