Author: Uri Blass
Date: 07:11:35 12/27/02
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On December 27, 2002 at 09:42:53, Mogens Larsen wrote: >On December 26, 2002 at 10:39:21, Uri Blass wrote: > >>Is there an evidence that Ruffian has an inferior book? > >No, I don't think there is any evidence available. But I would be rather >surprised if an autogenerated book made from less than 25000 games is of the >same quality as one made by a professional. Even if the most rare continuations >are weeded out. One might even argue that following the most common variations >is dangerous, because they should be well-prepared. > >Another point is the disabling of learning when used as an UCI engine, albeit >the effect of the book learning isn't documented and any advantage might be >insignificant. I don't know the quality of the Tiger book (+learning), so the >ELO disadvantage is hard to estimate. Probably not Kure class, so between 20 and >40 ELO points as a inaccurate guess. > >>Did people analyze the game to find if Tiger got better positions from the >>opening? > >The ones I've seen, which is only a few of the first games, didn't look >horrendous for Ruffian. Unfortunately, you can't tell when Ruffian exited the >book, ie. if the silly moves are from book or made on its own. > >Regards, >Mogens Ruffian is free and public. How is it possible that you cannot find when Ruffian left book? I understand if you cannot find directly from the pgn but I believe that you can find it by replaying the games. Uri
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