Author: Mogens Larsen
Date: 04:30:22 09/01/02
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On September 01, 2002 at 05:42:16, Aaron Tay wrote: >True. But i would think that the average autogenerated book might end abruptly >at certain critical points where the chess engine would still need guidance. I >would think a handtuned book would not have this problem. That's correct. >So if your autogenerated book abruptly stopped at move 20 of a complicated >yuogslav dragon sicilian, the engine might come up with plausible moves but >those which have being known in theory to be bad (this is where the wide >commericial books with replies to even suspect moves shine). This is somewhat >similar to a engine without opening books coming up with the first 20 moves >unaided and stumbling on the 21th. That can't be avoided, even if you generate a book with a depth of 60 or 80 plies. In general I don't think it's a major problem percentagewise. The solution is learning and keeping the repetoire under control. After all, the ambition is to gradually improve and develop towards the quality of a handtuned book, not start with a finished product. Here I have the impression that the tuning tools, eg. automatic learning and book extensions, are too slow and generous to be effective. Maybe more cynicism is needed. >Also as mentioned before by many others, tricky lines (!?) that are not played >in GM practice , could be sprung on unsuspecting amaetuer using autogenerated >books. In championship games, I could see people preparing such lines by testing >the latest versions of their opponents to see if the engines react badly. If >they do it's going to be placed in the books.. Quite. That's why I'm against too much exclusive emphasis on GM games, ie. the 2600.pgn syndrom. There's a lot of lines that engines don't understand, eg. compensation concepts and various acute implicit plans. The repetoire is often too narrow to be effective and therefore vulnerable. Regards, Mogens
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