Author: Uri Blass
Date: 03:36:45 02/22/02
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On February 22, 2002 at 05:43:49, Gian-Carlo Pascutto wrote: >On February 22, 2002 at 03:27:21, Yar wrote: > >>That's very famous position from Deep Blue-Kasparov match. The last played move >>by Deep blue ra6?? was not correct. More interesting that in this position >>Kasparov resigned !! He missed a draw by perpetual check. This position was >>deeply analyzed by Karpov in his book (in 2000) > >I know, I know :) > >The point of Fritz's analysis is that a modern program CAN find the >draw, which was believed to be impossible as it is very deep. > >-- >GCP Bob Hyatt believe that it is impossible to find it. I did not. Hyatt also talked about the position some plies earlier but I think that in this case every top program is going to find Kh1 after a long search and not Kf1 The evaluation after the alternative Kf1 may not be a draw but the main reason for it is the fact that programs do not choose later deeper blue moves and they believe that Ra6 is a mistake. Every top program today can expect the draw line of deeper blue inspite of the fact that the evaluation is not going to be a draw(in the worst case after long search and in the best case after a short search of at most few minutes) Only deeper blue could not see it and expected trading queens If you combine it with the fact that there is no impressive move of deeper blue in the games then you can understand the impression that deeper blue's search was inferior relative to the search of the top programs of today. I also do not think that you need to search something close to 60 plies even without extensions in order to see the draw. You need to see more than 40 plies forward but not 60. If you think that you need 60 plies then I want to see the exact line of 60 plies. Uri
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