Author: Dann Corbit
Date: 23:07:24 10/05/05
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On October 06, 2005 at 01:36:39, Bruce Moreland wrote: >On October 05, 2005 at 23:31:58, Dann Corbit wrote: > >>[D]2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 b - - acd 20; acn 1140598022; acs >>1000; bm Rb4; ce 315; id "WAC.230"; pv Rb4 Rb1 Ra4 Rc1 Ra2 Kf3 Kb5 Ke3 a4 Bc5 a3 >>Be7 Ka4 f3 Rg2 Ra1 a2 Kf4 Kb5; >> >>999 seconds was not enough to pick up Alex Szabo's brilliant refutation (which >>also assumes that the rook is taken instead of Rb1) > >This is a funny problem. Are you saying that Rb4 is refuted? Alex Szabo found an interesting line that shows it is probably a draw. Rb4 cxb4 a4 b5+ Kxb5 Ba3 c3 Re2! Kc4 f4 Kxd4 f5 exf5 Key position (after Re2 refutation): [D]2b5/8/4p1p1/1k1pP1P1/p2P4/Bpp3K1/4RP2/8 b - - See: http://chessprogramming.org/cccsearch/ccc.php?art_id=277397 I would not say that Rb4 is refuted, because it is the only move with winning chances. All others draw with certainty.
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