Author: Daniel Clausen
Date: 09:26:35 05/02/02
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On May 02, 2002 at 12:13:48, Jeroen van Dorp wrote: >[D]8/6p1/5pk1/8/2r5/4PP1P/R1p3PK/8 w - - 0 47 >Pocket ChessPartner v1.0 - CENTURY 4.0 > >Here Century pondered 47. Ra1 c1Q 48. Rxc1 for it's white opponent instead of >47. Rxc2 Rxc2. > >I wonder why: is it because Century might think (in a twisted computer chess >way) "swapping a rook for a queen is more valuable than swapping a rook for a >pawn", or because it pondered the chance that black makes a mistake, doesn't >promote, and white can play Rc1, disabling promotion for the time being? > >Just a small question about computer chess progam logic (I hope). > >Thanks. > >J. Not sure it's the reason here, but often it's this: If a side has a huge material advantage, the score increases steadily ply after ply. Since it takes two more plies to reach the "one rook up" advantage in the first variation, Century got a worse score for the 2nd variation and therefore chose variation 1. That or it's something different. :) [ie 1-ply-swindling-mode :)] Sargon
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