Author: Uri Blass
Date: 15:48:01 06/26/03
Go up one level in this thread
On June 26, 2003 at 18:38:36, Uri Blass wrote: >On June 26, 2003 at 18:36:35, Uri Blass wrote: > >>On June 26, 2003 at 18:28:55, Jeremiah Penery wrote: >> >>>On June 26, 2003 at 17:54:35, ALI MIRAFZALI wrote: >>> >>>>[D]3rr3/6k1/2p3P1/1p2nP1p/pP2p1P1/P1B1Nb1B/2P2K2/5R2 b >>>>In the above diagram Deeper Blue made a huge mistake by playing 39...Kh6 and >>>>lost.Commercial programs do not play this move but choose 39...h4 which draws. >>>>Amazingly no annotation to this game mentions this as the loosing mistake ;but >>>>they concentrate on moves like 34...Qxf1+ as mistakes.I Let Chessmaster 9000 >>>>at 1.8 GHZ play both sides at 999 seconds per move for both sides after 39...h4 >>>>and the result is a draw.Amazingly 39....h4! is played by the programs at very >>>>low depths also.Deeper Blue must be inferior to current Commercials for turning >>>>a Draw into a loss by playing 39....Kh6? 200 million positions per second and >>>>still it does not see 39...h4.I think Deeper Blue was at least 200 Elo points >>>>weaker than the current Commercials.HERE IS CHESSMASTER 9000 autoplay at 999sec >>>>per move at 1.8 GHZ after 39.....h4! >>>>CHESSMASTER 9000:39...h4 40.Ng2 Kf8 41.Nxh4 Bd1 42.f6 Bxc2 43.g7+ Kf7 44.Nf5 >>>>Kxf6 45.g5+ Kxg5 46.Bxe5 Rxe5 47.Rg1+ Kf6 48.g8=Q Rxg8 49.Rxg8 Rxf5+ 50.Bxf5 >>>>Kxf5 AND in this Drawn position the Computer(CM 9000) moves pieces back and >>>>forth for another 30 moves which I do not list without any advantage for any >>>>side.SO I THINK AFTER 39.....h4! IT IS A DRAW. >>> >>>Who says that this line played by Chessmaster is by any means the best one from >>>white's perspective? You can't claim this is a drawing move based on one game >>>played by one engine against itself. There's no real analysis to back this up. >> >>one game of engine against itself is better than no analysis. >> >>If you claim that it is not a draw then you need to show a way to beat >>chessmaster. >> >>Uri > >I mean if you want to claim and convince other people. >I do not know the right result and if I see draw in comp-comp game then my guess >is that it is probably a draw. > >Uri I post too fast(I mean that it is my guess if I do not see another evidence) I did not analyze the games to be sure and of course I do not claim that I am sure. There are cases when I may have opinion that is different than the computer result but when there is nothing obvious for me I tend to believe in first guess that the computer result is the correct theoretical result. I think that it may be productive to use more time and other engines for the first moves of the game to see if white has no better alternatives. Using evaluation of next best may be also productive to see if there are better alternatives. Uri
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