Author: Uri Blass
Date: 14:33:57 08/21/03
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On August 21, 2003 at 17:15:21, Gian-Carlo Pascutto wrote: >On August 20, 2003 at 11:42:30, Arturo Ochoa wrote: > >>Do you know that the Chess Partner Book of Sjeng is different from the Native >>Sjeng Book? The Chess Partner Book of Sjeng is created by Jeroen Noomen but I >>am not sure about the Sjeng Native Book. > >Since Deep Sjeng 1.5, by default the Noomen book is always used. > >Uri's conclusion about Deep Sjeng's strength vs Ruffian and Aristarch >and his extension to the strength of Noomens book was just significantly >flawed. > >-- >GCP We can only say that we did not see a proof that Noomens book is superior. There is even some evidence but no proof that the opposite is correct. I did not say that I am sure that the Ruffian book is superior but the results of Ruffian1.0.1 suggests that it may be the case. Ruffian1.0.5 is a different case and I suspect based on posts in the winboard forum that there is a bug in the way that it use Leo's book because it played a bad line in one of the games that it lost to Crafty. Aristarch4.21 still scored more than Deep Sjeng1.5 even after combining the scores of the first division and the premier division. I think that these results prove at least that Deep Sjeng1.5 is not significantly better than these amateurs. If Deep Sjeng's book is significantly better then it means that Aristarch and Ruffian are better engines than Deep Sjeng but results of the nunn2 match that Leo posted suggested that Deep Sjeng is better than Ruffian Uri
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