Author: Albert Silver
Date: 05:29:26 12/08/05
Go up one level in this thread
On December 08, 2005 at 05:48:39, Vasik Rajlich wrote:
>On December 08, 2005 at 01:05:57, Albert Silver wrote:
>
>>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.
>>
>
>I just want to make a comment about the positional vs tactical settings. These
>slightly affect the way search is handled.
Could you elaborate a bit?
Albert
>They will not change the general feel
>of the program for a human observer. Only different evaluation terms can do
>this.
>
>Vas
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