Author: Gerd Isenberg
Date: 14:51:06 11/20/03
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On November 20, 2003 at 16:45:27, Dieter Buerssner 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 ;-) ? > >Interesting. I would think, there is no slightly easy way without search. Even >if one engine would prefer pos two - I think it would be mostly luck. > >How to prefer pos 2 can be easy. Evaluate pins, evalualte more advanced pawn >better. In 2 positions, the Q pins the R. So depending on the "advanced pawn >bonus" vs. the "pin bonus" a primitive eval can choose the right pos at a leave >node (however it seems, that one will never compare all 3 positions from the >same node). > >Regards, >Dieter Hi Dieter, some general properties in this open queen-rook endings with a lot of open files, where king safety and pawn shield matters a lot, may be the abilty to have some defending squares on opponent's checking rays. See my reply to John. Regards, Gerd
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