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Subject: Re: How make Fritz execute brute force search?

Author: leonid

Date: 15:25:31 07/26/00

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On July 26, 2000 at 17:12:02, blass uri wrote:

>On July 26, 2000 at 16:59:35, leonid wrote:
>>On July 26, 2000 at 13:40:32, Tom Kerrigan wrote:
>>>On July 26, 2000 at 09:18:41, leonid wrote:
>>>>How ask Fritz execute brute force search? I have Fritz 6 but if it is possible
>>>>for some other version (even better DOS version), please say me.
>>>>Recently I went to see Fritz nodes per second performance. Very impressive! Only
>>>>maybe I am missing exact numbers. NPS tend to grow when search is done by brute
>>>>force. This is why I try to find where Fritz numbers stays in real. But Fritz,
>>>>in dispite of its performance, is not exactly open minded piece of software.
>>>>Even its NPS I was able to see only through my Hiarcs 7.32 program.
>>>>Thanks in advance,
>>>My search is selective only because of null-move. I believe this is also the
>>>case with Fritz.
>>>With null move on, my program searches 634k NPS. (BK, short searches)
>>On what hardware do you have 634k? I was very impressed with Fritz numbers only
>>because they were between 220 and 320k on AMD 400Mhz. Your numbers are almost
>>twice as fast.
>>On the same hardware average NPS for other best programs were, for similar
>>positions, between 140 and 180k. I see that you are more that lucky with
>>>With null move off, it searches 655k NPS.
>>>The difference is 3.3%.
>>Good to know that this difference is negligeable.
>>>Basically, I wouldn't worry how much faster Fritz is without null move, for
>>>three reasons:
>>>1) The difference is probably pretty insignificant
>>>2) You'd never want to run Fritz without null move in real-world situations
>>>3) You didn't write Fritz
>>With few exceptions (Hiarcs is the most flagrant one) I found that NPS is good
>>indicative of the strength of the chess program. Inside of Hiarcs package (tried
>>only few positions) Crafty had the best NPS immediately after Fritz. It is
>>probably the most strong engin after Fritz as well.
>Junior searches more nps than Crafty but there are other strong programs with
>less nps(Chessmaster6000 or shredder4 are good examples).

Is the Junior engin, like Crafty, or complet program, like Rebel?


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