Author: Uri Blass
Date: 06:21:29 05/27/02
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On May 27, 2002 at 07:51:02, Vincent Diepeveen wrote: >On May 27, 2002 at 07:13:34, Jouni Uski wrote: > >>If they don't get Hiarcs8, why not to test Crafty18.15 with good book! Either >>with Fritz7 book (if testing Chessbase native) or with WB2UCI converter and good >>native book. Or is this waste of time? Second candidate is to test is may be >>Yace. >> >>JOuni > >yes with fritz7 book would be a great test. But i am not sure they >like in sweden crafty kicking butt of everything and everyone using >the secret chessbase auto232 player. > >in fact they never post with which book who plays. I am really interested in the value of the Fritz7 book. It may be interesting if someone can test the same program against itself when one side gets the Fritz7 book and the other side has no book and only use learning to play a different first move after a loss. There are 20 different moves in the first move so the program with no book is not going to lose the same game twice(it may also forget avoid moves after many games because after 20 games with the same color it can be almost sure that the opponent is different and there are only few cases when the ssdf do mathces of more than 40 games and usually in these cases the number of games is 42 or 44). There is a possibility of losing the same game with different order of moves twice(1.e4 e6 2.d4 and 1.d4 e6 2.e4) but if the learning is good enough then the program is not going to allow a position that it knows that it lost and after losing a game by 1.e4 e6 2.d4 d5 it is going to play a different move after 1.d4 e6 2.e4. I guess that a program with no book and simple learning may be not more than 100 elo weaker than the same program with the Fritz7 book. There may be even cases when the program with no book may repeat the same win again and again. 1.h3 gives equality and if a program wins by 1.h3 it may repeat it and if the opponent has no reply in it's book against 1.h3 and no positional learning then the opponent may lose again and again. Opening like 1.e4 a6 are also not a sure loss and I guess that the program is not going to need to try some really bad moves like 1.e4 f6 or 1.e4 f5 or 1.e4 b5 because it is not going to lose almost every game with black and these moves are going to be the last in it's priority and it may try them only if it lost in every other choice in the last 19 games. Uri
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