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Subject: Re: Programmers Question: Hashing and Alpha/Beta bounds

Author: Dieter Buerssner

Date: 11:35:36 06/08/05

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On June 08, 2005 at 07:09:33, Tord Romstad wrote:

>OK.  Here is what I get for a 14 ply search from the initial position:

Thanks, Tord!

>PV nodes: 2,234  Non-PV nodes: 15,193,446  99.985296%
>
>Not too different from your numbers.

Right.

>My slightly higher PV node percentage
>can perhaps be explained by the fact that the best move at the root changed
>many times in the first 14 plies.

Perhaps even more important is, that you don't use an aspiration window? (IIRC,
what you told some time earlier.)

Cheers,
Dieter



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