Author: Robert Hyatt
Date: 13:54:42 06/08/01
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On June 08, 2001 at 16:38:10, John Merlino wrote: >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. > >Sorry, I should have been clearer. > >What were the moves? > >jm All I remember are: Rxd6+ Kxd6 Kb4 Kc6 c5 f6 Kc4 and f5. The score was around -3 by that point... The score was not horrible at the point of Rxd6, but it was not expecting that to happen and the score dropped significantly (better for black) after white decided to swap rooks.
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