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Subject: Re: Shredder 5 - first impressions

Author: Christophe Theron

Date: 10:39:53 12/19/00

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On December 19, 2000 at 13:13:27, Mogens Larsen wrote:

>On December 19, 2000 at 12:19:13, Christophe Theron wrote:
>
>>On December 19, 2000 at 06:52:08, Mogens Larsen wrote:
>>>It's not an especially fast program, around 160Knps on my Athlon, but quite
>>>selective or so it seems. That could be a problem at faster timecontrols.
>>
>>
>>
>>Why? Can you explain your reasonning?
>>
>>
>>
>>    Christophe
>
>No, I don't think I can, given that I'm not sufficiently knowledgable about the
>program. Maybe the evaluation leaves it vulnerable to tactics at shorter time
>controls, I don't know.
>
>Mogens.



As far as I know, the speed (in term of NPS) of a program is not an indicator of
its favorite time control. For example, Hiarcs is a very slow program, but it
performs extremely well at very fast time controls. It is the opposite for
CSTal.

The level of selectivity is not a good indicator either. The King and Hiarcs are
very selective (they have to, as they are also very slow in NPS), and as I
pointed out, Hiarcs is very good at blitz. I don't know if the King shows any
preference for a given time control.

Tiger is a very selective program, and it does not favor a time control over
another one.

I would add that the presumed level of "knowledge" of a program does not
indicate either the time control it will excel in. Once again, Hiarcs is
supposed to have a lot of knowledge, and once again it performs the best at
blitz. Which is not to say that it is bad a long time controls.

And finally over the years I have noticed that some programs have a clear
preference for fast time controls (Genius, Hiarcs...), but nobody has ever been
able to show that a program had a preference for long (or very long) time
controls. People say they have the impression that program X plays better at
long time controls, but it is never proven by further testings.



    Christophe



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