Computer Chess Club Archives




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

Author: Uri Blass

Date: 06:59:10 07/15/02

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On July 15, 2002 at 08:37:34, Omid David wrote:

>I don't think using double null-move is a good idea in practice, since in
>midgame the chance of zugzwang is negligible and thus it's superfluous (I doubt
>if even DIEP uses it). However the contribution of double null-move is that it
>gives legitimacy to the null-move pruning idea, proving that it _is_ a correct
>search method (anyway, no one doubts null-move nowadays).

Junior does not use null move pruning(I know that it did not use it few years
ago and based on Amir's post he worked mainly on evaluation after Junior5).

I wonder if amir tried null move pruning in Junior.


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