Author: Albert Silver
Date: 22:05:57 12/07/05
I can't recall Deep Fritz 8 ever looking in such bad shape. It lost even winning
attacks. Here is one position where I was certain Rybka was done for:
[D]5k1r/pb3q2/1p2p1Rp/3nPp1Q/2r2P2/P5P1/1P2N3/4KB1R w K - 0 32
yet 20 some moves later the position looked like this:
[D]8/p7/1p2p1k1/1P2Pp2/P2r1PnP/5Q1K/R5B1/2q5 b - - 0 56
I think Rybka is a poor name. Houdini seems more appropriate.
Bear in mind that this was played using Rybka's "slightly positional" profile.
My purpose is to test the other as well under identical conditions in order to
better see how they differ in terms of performance and style. That, and the fact
Rybka doesn't have its own book, is why I choose to play with the Nunn2 set.
CEGT reportes that Rybka suffered a marginal loss to Hiarcs 9 as well as a
serious one to Chess Tiger 15, so Tiger will be the next opponent in the series.
Then I'll see what the other styles show.
Athlon64 Sempron 3400+
Hash: 256 Mb; ponder off
Time Control: 10min + 2 sec
Nunn2 Openings set
1 Rybka "SP" Beta 32-bit +24/-3/=13 76.25 30.5/40
2 Deep Fritz 8 +3/-24/=13 23.75 9.5/40
The first match against the default "very positional" style yielded
1 Rybka "VP" Beta 32-bit +18/-10/=12 60.00 24.0/40
2 Deep Fritz 8 +10/-18/=12 40.00 16.0/40
Bear in mind, one match means nothing so no conclusions other than it is a
different and interesting style should be inferred.
Albert
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