Computer Chess Club Archives




Subject: Re: Null-Move: Difference between R = 2 and R = 3 in action

Author: Omid David

Date: 23:22:00 07/12/02

Go up one level in this thread

On July 13, 2002 at 02:07:17, Vincent Diepeveen wrote:

>I still do not understand which positions you talk about which R=2
>is finding and R=3 isn't.

I read your other post, that's also my point: Although at fixed depth, R=2 is
much better than R=3 (see also "adaptive null-move pruning" Heinz 1999), in
practice R=3 performs about the same as R=2 since on many occasions it finds the
correct move one ply later with lower search cost.

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