Author: Gerd Isenberg
Date: 11:48:11 04/06/04
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On April 06, 2004 at 05:42:43, Eduard Nemeth wrote: >Taleb,M - Natarajan,C >6Q1/5P2/2K5/5kP1/8/8/8/r2r4 b - - 0 1 Hi Eduard, thanks for posting this game and the final position. IsiChess has really some problems to find a draw score :-( Ok, it may be take some plies to force the first repetition. So clearly some other heuristic or knowledge is required here, probably triggered by some checks in a row of the weaker side. My implementation of Roland Pfister's "Patzer heuristic" don't works here. It is so obvious. Always protected rook gives endless checks on abc-files - no hiding place, no piece may break the checks. It should be possible and i may think about it to solve this statically or at least by some shallow search. This one is much easier: 6Q1/5P2/1K6/5kP1/8/8/8/r1r5 b - - And this one may be a bit more difficult: 7Q/6P1/3K4/6kP/8/8/8/r3r3 b - - Keep on, supplying us with such interesting games and positions! Cheers, Gerd
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