Author: Howard Exner
Date: 14:34:09 05/10/98
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On May 10, 1998 at 00:52:18, Keith Ian Price wrote: (lots of lines snipped but read and appreciated) >When I >asked for specifics, he mentioned two examples against Rebel that had >surprised him as to how little understanding they had of endgames and >King safety. I sometimes wonder how much Deep Blue was improved upon by the work of GM Joel Benjamin. Wasn't it the Fritz win win over Deep Thought that exposed its own King Safety flaws (or was that due to a book error that did not take into account King Safty). The commercial programmers will just have to run out and employ one of these GM's for a year :-) > He said that since the chess processors >have some of the engame databases built in (I have read that these are >the 3-man set), he figured that it never got to the point where the SP2s >would need to access the hard-disk-based databases. He said that it was >probably a good psychological weapon for Kasparov to know that they were >there, since, if he made one wrong move during the endgame, he would >know that he would quickly look foolish in front of millions of people, >and this would have to have an effect. Or more likely the endgame bases were included so as not to make Deep Blue look foolish. >There were 8000 adjustable >evaluation features, and these included such things as the value of a >rook on an unopened file which could later be forced open with a pawn >exchange or sacrifice. He said this was one that was added through the >help of GM Joel Benjamin, and he knew of one instance during the match >when it had an effect. (I have not looked over the games to see where >this would be, perhaps some helpful reader with more time could find >this out.) One game comes to mind where Deep Blue's Rooks were reduced to shuffling around in a cramped area. It was game three where Deep Blue played Bc7 on its 40th move, giving up a pawn. The resulting position was better for Deep Blue as its rooks were somewhat activated, putting pressure on Gary's backward d pawn. Not sure if this is the position Hsu was referring to. >Well, there was more, but this concludes the report for this forum. Most >of the rest is anecdotal, and not so informative, so I will stop here. I >hope it was interesting. Thanks for these informative posts on Deep Blue.
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