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Subject: Re: Rybka will lose to Topalov -Comment of C. Donninger

Author: ramon b. de robles

Date: 04:29:27 01/31/06

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Thanks Uri and Martin for the wonderful info about Rybka.

I will test Rybka using the ECE and MES as well as SUNEPOS from Rebel Site.
How about the underpromotions, Is it OK ?

So what is Vas saying of adding additional endgame heuristics. After that
addition, Rybka will be almost unbeatable.

And how about the comment of Mr. Donninger . Is this comment valid/true ?

Chrilly Donninger

I experimented recently with a Shredder-style search in Hydra. The
single-processor Shredder/Hydra completely demolished Shredder. If two programs
are similar, the strength difference is enlarged. Its therefore a bad idea to
tune a programme against itself. But the Shredder/Hydra made only 40% against
Rybka. Changing back to the standard Hydra-search its between 75-80%. Rybka is
regularily "killed" in king-attacks.

One conclusion of my experiment is: Rybka seems to be fairly tuned against
Shredder. This is always the fate of the leader of the gang. In the future other
programs will be tuned against Rybka and it will be much more difficult to stay
on the top.




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