Author: Robert Hyatt
Date: 22:40:31 04/11/03
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On April 11, 2003 at 18:26:32, Jorge Pichard wrote: >Which Pawn should White push in order to win, please provide Analylis. > >[D]8/8/3P3P/5r2/2P5/2P4k/8/6K1 w - - 0 1 My human eye says c5. If Rxc5 then d7 and Rd5 is met by h7 and black is pretty well hosed... The key is getting the rook to a square where it has to prevent one pawn from queening from behind, because it can't stop both from there, it needs to be on the first rank. Hence c5 to lure it away. cute position since Rc5 is not playable and anything else has trouble with c6. I let crafty grind on this after I looked at it and sure enough, at depth 17 it fails high on c5. Takes 5 minutes to find it however, on my dual 2.8. > > >------------------------------------------------------------------------------- >This is another position of Reciprocal Zugzwang: If White is to play, then he >can only draw, but if Black is to play, he loses. In other words, any move by >either side weakens his position to the extend of worsening the result of the >game! > >[D]1R4br/8/8/8/8/4K3/k5P1/8 w - - 0 1 Crafty says g3 is a dead draw.
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