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

Author: Tom Kerrigan

Date: 12:02:30 07/27/00

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On July 26, 2000 at 21:16:53, leonid wrote:

>On July 26, 2000 at 20:45:42, Tom Kerrigan wrote:
>
>>On July 26, 2000 at 19:26:03, leonid wrote:
>>
>>>On July 26, 2000 at 18:42:19, Tom Kerrigan wrote:
>>>
>>>>On July 26, 2000 at 18:22:47, leonid wrote:
>>>>
>>>>>On July 26, 2000 at 17:26:01, Tom Kerrigan 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:
>>>>>>>>
>>>>>>>>>Hi!
>>>>>>>>>
>>>>>>>>>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,
>>>>>>>>>Leonid.
>>>>>>>>
>>>>>>>>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.
>>>>>>
>>>>>>Pentium III/800. On a K-6/400 I figure I'd get 350k NPS or so. And that's for BK
>>>>>>positions; if I did a 5 second run of WAC, I'd get 780k NPS or so.
>>>>>>
>>>>>>-Tom
>>>>>
>>>>>If I am not missing there something, your numbers are better that the Fritz
>>>>>have. If you could someday check at what speed Fritz 6 goes on your hardware and
>>>>>send me the numbers (best with some concret position), it will be very nice. Or
>>>>>just put them here. If you numbers are so good, like I see them, you should be
>>>>>really proud to say them in public.
>>>>>
>>>>>Leonid.
>>>>
>>>>Sure, I'm proud of the NPS, but at the moment my evaluation function is so weak
>>>>that the program isn't competitive with even the stronger amateur programs.
>>>>
>>>>-Tom
>>>
>>>Tom, anyway, if you will find few moments, send me, at least, one concret
>>>position with Fritz 6 NPS and yours. It will say me what exactly are those
>>>numbers. Your sound to me too enigmatic, since they are so good. And if you have
>>>them right now, rest is nothing but question of time.
>>>
>>>Leonid.
>>
>>I don't own Fritz 6, or any other chess program for that matter.
>>
>>I write my own; why should I want anybody else's? ;)
>>
>>-Tom
>
>To compare. To verify your code as well.

I don't see how another chess program could be used to verify my code.

And I prefer not to compare my program to others; right now I'm just
concentrating on making it play good chess. (Of course, it's my idea of "good
chess" which is awful, but I'm doing the best I can. :)

-Tom



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