Author: Bruce Moreland
Date: 09:55:08 09/13/98
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On September 13, 1998 at 12:07:14, Thorsten Czub wrote: >what an amazing disadvantage to use the book that was sold for extra >money to make sure fritz scores better, and that was used in xyz % >in sweden and that fritz-experts call important and at least >giving 50 elo points in usage. > >What an amazing disadvantage to have a book that is 530 Mbyte big and >comes especially to help fritz... What I am trying to steer these threads around to is a discussion of big, automatically generated books, and how to implement blunder-avoidance in these. If I was trying to preen for the SSDF, and I had a lot of resources, I would make the huge book, autoplay against my competitors, and trim out lines that led to obvious bad situations. This would leave a huge book with some of the crap removed. If you play against other opponents, you get new crap though, since the other opponents play different lines. This is what I've noticed with my large book. I feel pretty comfortable that I will come out of book OK against some opponents, because when I see a bad line I trim it (this can happen either against a human or a computer), but when I play a new opponent I see some worse book lines. If I never played any new opponents I would say that my book was working great. Maybe Fritz is experiencing the same problems. If I was a chess-playing customer of Fritz I might want the large book, just so the diversity of openings played is increased. You have been messng with these programs for years, so you know exactly what I mean here. You can go all the way back to Chess Challenger 7, which was out of book after d4 Nf6, or you can come forward to MChess 3.5, which as far as I remember always played the Sicilian Dragon if you let it, or you can come forward to the most modern programs, which still have narrow books which let you play the same lines over and over. I don't play a lot of chess now, but I can tell you that I would have loved to have had lots of opening book diversity when I was playing a lot of chess. bruce
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