Author: Robert Hyatt
Date: 13:23:39 06/08/01
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On June 08, 2001 at 16:21:01, Robert Hyatt wrote: >On June 08, 2001 at 16:08:52, John Merlino wrote: > >>On June 08, 2001 at 15:19:09, Robert Hyatt wrote: >> >>>Here is a cute position that occurred between a commercial program and Crafty >>>last week: >>> >>>[D] 8/p4pp1/3rk2p/4p3/2P5/2K4P/P2R1PP1/8 w - - 0 1 >>> >>>Crafty was black and moved the rook to d6, offering a trade. The opponent >>>took it and was happy to do so. Unfortunately, white is lost. White saw >>>the passed pawn and apparently was quite happy. Crafty's static evaluation >>>for this position is -1.0 roughly. >>> >>>For those that "don't do endgames" black's king-side majority is the problem >>>here. White's passer gets blockaded, white has to desert it to stop black's >>>kingside passer he makes after a few pawn moves, and then black eats white's >>>a pawn and promotes. >>> >>>Instructional, at least. These are the kinds of positions you want to >>>see your program get right. I saw a very similar one against a GM today, >>>playing Crafty. He calculated for a long time after crafty offered to trade >>>the last piece on the board. He traded, and 10 moves later realized he was >>>dead lost. :) >> >>How did this game end after the rooks were traded? >> >>jm > > >Black wins easily. I should have added, the point here is that white ends up in a king and pawn ending with a passed pawn to none for black. Black has a kingside majority that many programs ignore. Here it is decisive.
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