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Subject: Re: Deep-Search Extensions (Re: Question about known extensions)

Author: Vincent Diepeveen

Date: 18:51:48 06/13/98

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On June 13, 1998 at 14:28:35, Robert Hyatt wrote:

>this is as I described it I believe...  except that if you use PVS you
>can't make the test above, since you either get X or X+1 back from
>the null-move, where X won't cut it.  To make it work, I simply did a
>second null-move search with a much lower window, and if it failed low,
>I triggered the extension, producing the same effect as above, but
>within
>the PVS alpha,alpha+1 framework...

Bob you're completely right, we need to waste more nodes when
using this algorithm, and with my selective way of bound
searching i can't afford that either.

>
>>      }
>>  }
>>
>>////////////////////////////////////////////////////////////////////////
>>
>>=Ernst=



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