Author: Robert Hyatt
Date: 11:55:10 05/28/03
Go up one level in this thread
On May 28, 2003 at 11:17:00, Ricardo Gibert wrote: >On May 28, 2003 at 11:00:06, Robert Hyatt wrote: > >>On May 28, 2003 at 00:57:00, Ricardo Gibert wrote: >> >>>On May 28, 2003 at 00:10:32, Robert Hyatt wrote: >>> >>>>On May 27, 2003 at 19:11:49, Jorge Pichard wrote: >>>> >>>>>After being completely out-played for the entire game, and with imminent defeat >>>>>on the horizon, Kasparov resigned the 2nd game rather than drag out the >>>>>humiliation. But Deep Blue had made a critical error, allowing Kasparov a >>>>>perpetual check. The analysis is quite deep and extends slightly beyond Deep >>>>>Blue's search horizon. And, apparently, also Kasparov's. Kasparov's team, which >>>>>included Grandmaster Yuri Dokhoian and Frederic Friedel, were faced with the >>>>>delicate task of revealing the news to Kasparov. They waited until lunch the >>>>>next day, after he had had a nice glass of wine to drink. After they revealed >>>>>the hidden drawing resource, Kasparov sunk into deep thought (no pun intended) >>>>>for five minutes before he conceded that he had missed a draw. He later claimed >>>>>that this was the first time he had resigned a drawn position. >>>>> >>>>>Six years later, which program can see the draw in the famous 2nd game of the >>>>>rematch? >>>>> >>>>>Jorge >>>> >>>> >>>>NO program sees this. It is about 60 plies deep. It is unlikely that a >>>>program will see it for quite some time to come, in fact... >>> >>> >>>Whenever this comes up, you always say "about 60 plies", but I can't find >>>anything to corroborate this. Let's see your analysis. >> >>The best analysis I specifically remember was posted on Ed's web site a few >>years ago. I didn't save it as it was not particularly "interesting" to me. >> >>It might still be available however... > > >http://www.rebel.nl/db2.htm > >He only gives 36 plies. A far cry from "about 60 plies" OK... then that may not be the deepest drawing line. However, he does point out the difficulty of finding one particular non-checking move way deep into the tree...
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