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Subject: Re: Nullmove implementation

Author: Matthias Gemuh

Date: 04:45:25 05/20/02

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>
>You can try the following position:
>
>r1b1r1k1/p1p3pp/2p2n2/2bp4/5P2/3BBQPq/PPPK3P/R4N1R b - - 0 1
>
>My program solved it at the same depth with and without null move pruning but
>null move helped it to find the move faster.
>
>It was not a very big improvement.
>There were also positions when my program needed more time but the total result
>is better.
>
>Uri


Slow HyLogic starts searching ply 8 after 2min 15sec without nullmove on Athlon
1.4. This time drops to 1min 25sec with nullmove. Best move is in both cases
"d4". So nullmove seems to help. Thanks.

Matthias.

• Re: Nullmove implementation Uri Blass 05:15:26 05/20/02
  • Re: Nullmove implementation Vincent Diepeveen 08:23:22 05/21/02

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