Author: Gerd Isenberg
Date: 05:26:56 11/21/03
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On November 21, 2003 at 07:24:34, martin fierz wrote: >On November 20, 2003 at 15:20:59, Gerd Isenberg wrote: > >>Three Positions, one is mate in 13 (Shredder - IsiChess WMCCC02). >>Any static eval or king safety heuristic to choose the best one for white if >>leaf nodes ;-) ? > >i can tell you what i think when i get to see such a position in a game: this is >one where you can't rely on your feelings (=static evaluation), but have to >calculate! so basically i think the answer to your question is that no static >eval can catch this one. Hi Martin, yes, this is absolutely true in the sense to decide whether this is a won, drawn or lost position. Anyway, double defending controls on check trajectories is probably one heuristic fact to consider. >not very helpful i know... if anything, my gut feeling likes the position with >the pawn on d7 best, because you still have some kind of king shelter. that >would probably be a sensible rule if you are looking for one: keeping a pawn on >the seventh is good for your king. >as for the difference between position 2 and 3, that's just what we >german-speaking guys call "stellungsglück". Yes, but in (3) there is a safe c2-c8 trajectory break via Qc4, protected by d5. Cheers, Gerd > >cheers > martin > <snip>
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