Author: James T. Walker
Date: 12:43:39 12/08/05
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On December 08, 2005 at 12:42:27, Kurt Utzinger wrote: >On December 08, 2005 at 11:56:34, Russell wrote: > >> Taken from:http://www.utzingerk.com/rating_5moves.htm#5 >>Shredder 9 Test: >> >> Fritz 9 50 + 17 = 16 - 17 50.0 % >> Fruit 2.2.1 50 + 18 = 14 - 18 50.0 % >> Fruit 2.1 30 + 10 = 9 - 11 48.3 % >> Toga II 1.1 50 + 14 = 16 - 20 44.0 % >> Toga II 1.0 50 + 9 = 16 - 25 34.0 % > >>Against the two strongest program that there is Shredder 9 scored 50%. While, >>against Fruit 2.1, Toga II 1.1, and 1.0 it scored less than 50%. What is >>striking is that Shredder performed the worst against Toga II 1.0. I just find >>this very strange.Especially, 25 losses against Toga 1.0. This derivatives of >>Fruit must have anti-shredder module or something. > > Frankly spoken this also looks strange to us. And > if we find the time (oops: Rybka, Ktulu 7.5, Hiarcs 10 > are waiting to be tested) we shall repeat the match > vs Toga II 1.0 in the near future. > Best regards > Kurt I suspect it indicates tuning the engine vs a specific opponent like Shredder since it was at the top of the SSDF rating list. The theory being if you can beat the best the rest is easy. Of course this does not work perfectly since other engines that do not have the same weakness as Shredder may perform better vs this engine. I also suspect that Rybka has been tuned this way since it performs better against Shredder than all other programs I tested it against. Of course I'm only guessing and have no real knowledge. The programmers can provide the real answer. Jim
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