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Subject: Re: Question about known extensions

Author: Guido Schimmels

Date: 08:01:00 06/12/98

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On June 12, 1998 at 03:49:36, Vincent Diepeveen wrote:

>Hello,
>
>Some time ago someone mentionned Deep Search extensions.
>I looked in archives but could not find anything about it.
>
>What exactly are deep search extensions,
>is it extending after the n-th extension more and more?
>
>Greetings,
>Vincent

I'm not sure, but I think it's from Donninger, if that is what you mean.
Have a look at the GNU-Chess source for a code example
(I think the deep null code is disabled by default).
 All I can say is, it is a null-move based extension, how it works I
don't know :-(
But AFAIK Chrilly himself doesn't use it anymore :-)

- Guido



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