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Subject: minimax vs. alpha-beta, my data

Author: Tom Kerrigan

Date: 10:49:49 06/16/00

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On June 16, 2000 at 09:43:56, leonid wrote:

>Is the number between minimax nodes/second, devided on number of nodes/second
>for alpha-beta, equal to around five?
>If, for instance, one position in minimax give 1000000 NPS, the same position
>but solved by alpha-beta logic will indicate around 200000 NPS speed?

I just ran some tests. Simple search, material-only evaluation:

Minimax: 2219093
Alpha-beta: 1753779

This was on my 800MHz Pentium III.


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