Author: Peter McKenzie
Date: 20:53:30 12/01/01
I am working on an endgame test suite, and finding it surprisingly difficult to get good test positions. It is interesting that many of the positions found in chess books either have a dual solution, or (less common) the solution has a mistake. Take the following position for example: [D]8/3n1pkp/6p1/1P1N4/3K2P1/7P/8/8 w - - Chigorin - Marshall, Karlsbad 1907 Chigorin played the thematic 1.g5!, which clearly wins as it prevents any black counter-play. But I think that most computers will initially prefer 1.b6, and it is unclear if this is winning or not. I think tablebases could be quite useful here, so perhaps someone could run crafty/yace/fritz/tiger etc on it for a decent amount of time. One possible attempted defence is 1.b6 f5 2.gf gf 3.b7, it might be worth starting a search from there. cheers, Peter
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