Author: Rafael Andrist
Date: 11:42:33 10/15/01
Go up one level in this thread
On October 15, 2001 at 14:21:21, Simon Finn wrote: >On October 15, 2001 at 12:52:32, Rafael Andrist wrote: > >>On October 15, 2001 at 12:08:18, Dann Corbit wrote: >> >>>On October 15, 2001 at 10:22:09, Rafael Andrist wrote: >>> >>>>[D]8/2p5/1pP3k1/1P3p2/8/5pP1/5P2/3K4 w - - bm Kc2; id "APE.704"; c0 "M. Sinar, >>>>1983"; >>>> >>>>According to M. Sinar, White wins with Kc2. But after analyzing the position >>>>with chess programs (without TBs), I could not find a winning line. The score >>>>swaps between +2 and 0. What do other programs say? > >>Thanks for posting these analyses, Dann. The position after 9.Kxb6 is drawn. >>After comparing your output of Yace and Crafty and the one of Wilhelm, I suspect >>that the solution of Sinar is wrong. There are also some other composed pawn >>endgames by Sinar which are wrong, that's why I don't trust him very much. > >Presumably this was what Sinar intended? > [D]8/2p5/1pP4k/1P3p2/8/5pP1/2K2P2/8 w - - 0 1 I do not know. The position was an example to illustrate the use of co-ordinated square systems in article written by him. The position given by you seems to have the same problems: analysis by Wilhelm (without TB): 16 13s 1.64 590675 2824 Kc2-c3 Kh6-g5 Kc3-d4 Kg5-g4 Kd4-e3 Kg4-g5 Ke3xf3 Kg5-f6 Kf3-f4 Kf6-e6 f2-f3 Ke6-f6 g3-g4 f5xg4 f3xg4 Kf6-e6 17 72s 1.77 2573425 3549 Kc2-c3 Kh6-g5 Kc3-d4 f5-f4 g3-g4 Kg5xg4 Kd4-e4 Kg4-h3 Ke4xf3 Kh3-h4 Kf3xf4 Kh4-h5 Kf4-e5 Kh5-g6 f2-f4 Kg6-f7 f4-f5 18 89s 0.31 3215879 8612 Kc2-c3 Kh6-g6 Kc3-d3 Kg6-f6 Kd3-e3 Kf6-e5 Ke3xf3 Ke5-d4 Kf3-f4 Kd4-c4 Kf4xf5 Kc4xb5 g3-g4 Kb5xc6 g4-g5 Kc6-d7 g5-g6 Kd7-e7 19 120s 0.18 4265498 18574 Kc2-c3 Kh6-g6 Kc3-c4 Kg6-f7 Kc4-d3 Kf7-e6 Kd3-e3 Ke6-d5 Ke3xf3 Kd5-c4 Kf3-f4 Kc4xb5 Kf4xf5 Kb5xc6 g3-g4 b6-b5 g4-g5 b5-b4 g5-g6 20 137s 0.11 5025410 24167 Kc2-c3 Kh6-g6 Kc3-d4 Kg6-g5 Kd4-e5 Kg5-g4 Ke5-e6 Kg4-h3 Ke6-d7 Kh3-g2 Kd7xc7 Kg2xf2 Kc7xb6 Kf2xg3 c6-c7 f3-f2 c7-c8D f2-f1D Dc8-c3+ Kg3-f4! Dc3-d4+ regards Rafael B. Andrist
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