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Subject: Re: Is the NPS for minimax devided by NPS in alpha-beta = 5 ?

Author: José de Jesús García Ruvalcaba

Date: 10:26:28 06/16/00

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On June 16, 2000 at 13:16:57, leonid wrote:

>On June 16, 2000 at 12:34:58, Michel Langeveld wrote:
>
>>No nps of alpha-beta and minimax will be almost the same. But the total number
>>of and the total amount of time will be a much lesser.
>
>Your first statement sound to me as something near to impossible. Just recently
>Bas Hamstra said that minimax speed is around 800000 nodes/second.

If you read carefully, Bas used alpha-beta.

> Computer was
>indicated as Pentium 466M. Usual number of nodes/second that I see on my AMD
>400M (for some best chess games like: Crafty, Xchess, Comet...)is around 150000.
>Even from this I can see that: 800000:150000=5.3 times.
>
>Leonid.
>

The difference is because Bas was doing material-only evaluation.
José.



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