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Subject: Re: Questions About shredder 7

Author: Uri Blass

Date: 03:54:12 04/15/03

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On April 15, 2003 at 06:30:43, Kurt Utzinger wrote:

>On April 15, 2003 at 05:59:40, Rupesh wrote:
>
>>On April 15, 2003 at 04:43:44, Kurt Utzinger wrote:
>>
>>>On April 15, 2003 at 02:27:59, Rupesh wrote:
>>>
>>>>Can somebody tell me what are the differences between shredder 7 and shredder
>>>>7.04? Also why is forward pruning set to a negative value in shredder engine
>>>>parameter? What does it signify?
>>>>
>>>>Thanks
>>>>Amitesh
>>>
>>>    The main difference between Shredder7 and Shredder704 is that the latest
>>>    version seems to be stronger.
>>>    Kurt
>>
>>
>>Kurt, I use shredder 7 on playchess. I have played against many shredder 7.04
>>engines and the statistics does not lean toward shredder 7.04. So i was thinking
>>of finding which portion of the program SMK rewrote.
>>
>>Also my question also was why we see a negative forward pruning number in engine
>>parameters?
>>
>>Amitesh
>
>     I have not answer to the negative forward pruning number. But what I know
>     is that comparisons between engine Xa vs Xb do seldom bring reliable
>     facts as to strenght of engines. Shredder 7.04 does better vs all other
>     programs than Shredder7, that's the point.
>     Kurt

I read a claim that the book of shredder7 was optimized for
shredder7 and not shredder7.04

I do not know about direct comparison of matches between
Shredder7 and shredder7.04 but I guess that 7.04 is going
to win also in that comparison if you use the nunn match.

I know from my experience that when moveib was better than
moveia based on direct comparison then it was also better
against other engines based on results of beta testers.

Uri



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