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

Author: Tom Kerrigan

Date: 11:12:47 06/16/00

Go up one level in this thread


On June 16, 2000 at 14:10:24, leonid wrote:

>On June 16, 2000 at 13:25:41, Tom Kerrigan wrote:
>
>>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. 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.
>>
>>Then his program is 5.3 times faster. This has virtually nothing to do with
>>alpha beta vs. minimax.
>>
>>-Tom
>
>I doubt that his program is 5 time faster. I think that his program at
>alpha-beta will be around 200000 nps.
>
>Leonid.

I don't see why you post if you don't listen to anybody. See the data that I
posted near the root of this thread.
-Tom



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