Author: Robin Smith
Date: 16:26:20 12/13/00
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On December 13, 2000 at 13:33:55, Bruce Moreland wrote: >On December 13, 2000 at 12:50:16, walter irvin wrote: > >>would most people considder chess to be solved if a computer had an oppening >>database that always left the computer +2.50 when it was out of book and not >>ever permitting the blocking of position??? with best play does anyone believe >>that black does not lose ?? also if 100% represents the total number of legal >>positions then what % make up positions that could SAFELY be reached vs strong >>opposition ???(3% perhaps)and if that is the case then should that not be the >>positions to solve??? > >There is no guarantee that this would solve chess, but the odds would be high >that there is at least one forced win if white can force a +2.5 computer >evaluation from the root. The likelyhood of chess being a win for white, with perfect play from both sides, is very low. This is born out by computer-computer games, where the draw percentage increases as search depth/time increases and also by the fact that super GM vs. super GM games have a much higher draw rate than games by lower rated players. In both cases as playing strength increases the percentage of draws also increases. Strong evidence that chess is a draw. Also, in decisive games one almost invariably finds that one of the players either made a mistake or mistakes, or at the very least took unneccesary risks. And most strong chesspayers believe a perfectly played game should end in a draw. When Kasparov was once asked why he did not win a particular game he replied "Chess is a draw, no?". So, there will NEVER be any computer opening database, no matter how big, where computers (playing white) think the 1st position out of book is always at least +2.50 for the computer .... unless the computer has a seriously flawed evaluation, in which case it will hardly mean chess is solved. Robin Smith
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