Author: Peter Fendrich
Date: 07:00:36 10/15/03
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On October 14, 2003 at 10:08:47, Robert Hyatt wrote: >On October 14, 2003 at 08:00:48, emerson tan wrote: > >> >>I played a 24 game match between chessmaster9000 default and chessmater9000 >>without book with time control of 40 moves in 2 hours and the result was 13.5 to >>10.5 in favor of cm without book. 8 wins for without book and 5 wins for the >>default and 11 draws between them. >> >>Its seems that the one with no book "understands" the position better than the >>one without the book because it calculates from move one therby can follow the >>progress of the position from move one, the computer decides how the position >>progress and it arives in a position that the computer likes and knows how to >>play it. unlike the one with book,it may not know well how to play the position >>after it is out of the opening. that's just my wild way of explaining it, but >>seriously, why did the one without book beat the default one? I was expecting >>the default one to beat the one without books because you can see that from the >>earlt part of the game, the one with book was usually way ahead of of time, >>leaving it much more time to calculate complications in later part of the game. > > >Something has to be wrong. In a 40/2 game, most openings should go for 10 >moves. That gives one program an extra 30 minutes on the clock since book >moves are played instantly. That extra 30 minutes is significant. Add to >that the fact that several openings have deep traps that can't be seen by a >normal search, and the gap should widen farther. I suppose that you mean 10 moves for one side, 20 plies. Depending on the book used, the program without book will leave theory before 10 moves I think. Openings like 1.Nf3 will leave the book quite early. I haven't tested it though. Some of the lines will end up in traps, cramped positions etc for the one w/o book. But I think that a lot of games are needed to really catch the difference. Another thing is whether learning is used or not in the match. /Peter
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