Author: Peter Berger
Date: 09:32:07 11/29/01
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On November 28, 2001 at 02:17:41, Sandro Necchi wrote: >This is the best I could do for the time being. >The main target was to make a program (engine + book) which is really fun to >play for humans, not to score better against other chess programs. I understand and agree. Strength is but only one of the reason a good chessprogram should have a good opening book,too - and I think it isn't the most important one by far. > >However, making it better it does score better against other chess programs. >Over 100 points was the last picture against other chess programs (120 to be >precise; last score Shredder 6 - Deep Fritz 1h games - 38.5 - 23.5 +32 =13 >-17), but I normally think it is better to use lower figures, so I say probably >80 points in total. > I am not sure if you knew that I was very serious and didn't joke at all. We can observe two main effects: a.) The books prepared by the "professional" book cooks spank the default GM books ( I think there might be even 100 points to be earned here if done by the very best). b.) If the engine has some opening knowledge of its own and a learner even the best book won't score more than 50 points more than the same program with no book IMHO ( not even remotely enough data to prove though). So it is maybe even easier to weaken your program by adding an opening book in comp-comp games IMHO. I think the best "professional" book cooks are able to gain 50 points and I think that's nothing to be sneezed at. I have tried some book fooling around myself ( just for fun ) and think it's a non-trivial task to improve in a decent way even upon a default GM book for comp-comp games unless you are extremely careful ( only few very obvious changes). And if you look at the games from previous CC championships ( I recently downloaded a big file by Frank Quisinsky and had a look ) it is amazing just how many games were lost by opening blunders out of book the engine probably would never have played itself. Regards, pete
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