Author: Robert Hyatt
Date: 02:33:41 08/12/98
Go up one level in this thread
On August 11, 1998 at 23:54:10, blass uri wrote: > >On August 11, 1998 at 23:21:45, Mark Young wrote: > >>On August 11, 1998 at 22:01:54, blass uri wrote: >> >>>Some programs like fritz5 with powerbook, Mchess7, and chesssystemtal >>>have big books. >>>The result is that they can follow wrong lines. >>>For example Fritz5 and Mchess7 can do a draw in the opening with white >>> >>>I think every move in a book the program play without checking should be checked >>>by the program before the game. >>>If the programs check 100 positions per day they can have in 3 years >>>a book theory of 109500 positions and I think it is enough. >>>I think grandmaster do not remember more theory. >>>I think a good idea for programs is to concentrate in a small number of lines >>>they understand. >>> >>> >>>They can have a big knowledge book but they should not use it without thinking. >>>If they lose they can learn by analyzing the games(1 move per hour in the moves >>>before the opponent has the advantage) and see where they did mistakes. >>> >>>There should be time of at least 12 hours between the games. >>> >>>Another option is to do singular extentions to the line of the game in the next >>>game. >>> >>>Uri >> >>I find a big book helps more. At least in fritz 5. The book I use is 12 million >>or so moves to depth 30. I can't think of anytime Fritz 5 played a draw line as >>white or black when still in book. I hardly ever get bad opening with the huge >>book I use. And that counts for human as well as computer players I have played. > >can fritz5 with your book play the opening of the 2 games that Thorsten posted? >In these games fritz5 played a draw line as white and a bad line as black. > >If the answer is no then maybe it is a good idea if chessbase will use your book >instead of the powerbook. > >Uri I think you two are arguing from two different perspectives. Mark plays on the chess servers (as do I) and as a result, he needs a wide book to avoid repeating the same game. This is even more important for me since I am "automatic" and exert no control on the game whatsoever. Uri is thinking of tournament chess, when you might only play 20 games a year or so. Here you want to be *sure* that your openings are the best you can do, because you have so few games to play, and you want to maximize your chances of doing well. Cray Blitz had a small book, and we went through it by hand. Crafty has a huge book, made from a database of 600K+ games, trimmed to 60 plies, with a move kept only if it was played 3 times and had at least one win credited to it. I do play bad lines here and there. But when playing 50-100 games a day, 1 or 2 bad lines is far better than repeating a few openings over and over, which will certainly get you killed. There's room for both approaches, depending on where the approach is used.
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