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Subject: Re: King 3.23 among the top-4 engines

Author: Mike S.

Date: 00:37:53 06/09/03

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On June 09, 2003 at 02:51:02, Christophe Theron wrote:

>On June 09, 2003 at 00:50:29, Mike S. wrote:
>
>>(...)
>>I think nowadays, 10m+10s can provide a perfectly valid comparison too.

>10+10 or 2+2 are the worst time controls you can imagine for Chess Tiger because
>it does not handle Fischer time controls correctly.
>
>Actually you can do even worse by playing 1+100 for example, but 10+10 is
>already a big problem for Tiger.

Thanks for pointing to that (again). Actually I'm aware of it most of the time,
but this time I forgot it... computer chess is so full of details! :-)

>So I'm surprised that it ends up at such a good place...

Indeed... the Elo difference to Shredder 7 and Fritz 8 if even *much smaller*
than on SSDF. Astonishing. Klaus Wlotzka has tested Tiger 15 with the more
gamibt=-1 setting. I don't know what SSDF uses.

An important difference of the testing methods is, SSDF uses the big opening
books, and the CSS list uses a small opening database with 10 short variants.
So, either the others loose a bit more performance without their own books on
the CSS list, and/or Tiger gains less than the others when using a large book,
on the SSDF list. (I don't know if this is a Noomen book or a general book for
Tiger 15, on SSDF.)

Considering that Tiger scores that good even with a big time disadvantage due to
the Fischer time controls (10m+0s instead of 10m+10s!), I wonder why it doesn't
score better at 40/2h in the SSDF tests.

Is it possible that Tiger 15 can use some of the increment time?

To increase the confusion :-) here is another rating list, from P3/700 at * 30
min./game * played with a "general draw book":
http://www.pcschach.de/Ranglisten/P3700Rating/p3700rating.html

Very similar to the CSS list in the top ranks, with Tiger 15 a few points behind
Fritz 8 and Shredder 7 (and King 3.23 scoring even better there, than on the
other list).

I'm clueless. :-)

Regards,
Mike Scheidl



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