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Subject: Re: New opponent programmer, with some beginner's questions

Author: Steve Maughan

Date: 07:11:44 11/21/05

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Tord,

>No, not using recursive null-move pruning does not make you a moron.  Some
>of the world's strongest chess programs (most notably Chess Tiger and Junior)
>do not use null move pruning.  At least in the case of Chess Tiger, the
>author seems to firmly believe that whatever he is doing works better than
>null move.

Are you sure Tiger doesn't use null move?  I always thought that Christophe did
use null move but said that he also used other techniques that added the same
gain in strength.  I could be mistaken.  Rebel is another engine that in the
past has not used null move. Now Ed uses a form of null move in Pro-Deo, his
latest engine.

Regards,

Steve



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