Author: Robert Hyatt
Date: 15:19:35 06/20/01
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On June 20, 2001 at 14:26:20, Vincent Diepeveen wrote: >On June 20, 2001 at 12:21:04, Geo Disher wrote: > >>Game two had a couple of key moves that were questioned by Kasparov after the >>match. Could someone tell me what those moves were? I am thinking of just >>letting my computer evaluate those positions for a few months if they will run >>that long to see if the deep blue moves ever show up as preferred moves. I >>understand that even running the programs that long will not come close to the >>number of moves DB went through but still I am interested in the result. I >>think others have done this in the past but maybe not with the newer software. > >Kasparov questionned Be4 move. > >This distracted audience from the poor level of Kasparov. > >Be4 is simple explainable. note deep blue searched around 11 ply there, >diep version 1997 played Be4 too, because diep had high penalty for >opposite bishops in those days. Note that Qb6 later appeared to be >easily winning for white after some extensive analysis of Seirawan >and later i only repeated those. The opposite bishops ending there >is simply won for white. > >It's understandable that in 1997 more as 1 program didn't play Qb6 but >preferred the first few plies Be4 there. Note that also in the Qb6 >line there are some great sacraficial lines which are from computerviewpoint >not so relevant, but those also draw for black (sacraficing a6 and e4). > >Crafty in those days played Be4 too up to a certain depth. Not any version I had. It wanted to take the pawn until ply=21 which took a long time to reach. At depth 21 the score dropped enough that Be4 looked good enough to play... but that was more than 24 hours of computing. > >Basically all programs which had a big penalty for opposite bishops. > >Initially DIEP likes Be4 now too, but already quickly it gets way bigger >search depths as Deep Blue ever got, and then Qb6 fails higher and higher >and in the end it gets played. > >That kasparov questionned this move shows 2 things > a) he knows nothing from computerchess > b) he distracted the attention of the audience from his bad level > in this game. > > Kasparov has made not only weak opening moves in this game, not > only missed a draw at the moment he resigned, but he also made > some major strategical errors. Seirawan explains these major > errors by saying: "kasparov never plays ruy-lopez with black, > i do, so i would play it way better as kasparov here". > >Best regards, >Vincent
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