Author: Andreas Guettinger
Date: 08:45:10 01/11/03
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On January 11, 2003 at 10:53:09, Uri Blass wrote: >On January 11, 2003 at 10:25:57, Andreas Guettinger wrote: > >>On January 11, 2003 at 08:31:44, Lieven Clarisse wrote: >> >>>This is most probably a well known position (pasted below). But ruffian resigns >>>here (5 min/game PIII 450 64MB hash). I think this kind of situation can be >>>easily dealt with: if the evaluation score for the initial position is equal to >>>that, after 25 ply (for instance) for the best line, than the score for that >>>position should set to 0.00. In other words, if the engine can't make any >>>progress after a certain number of moves, it is draw; no mather how inbalanced >>>the material is for both sides. >>> >>> >>>[D] 7k/8/1p1p1p1p/pPpPpPpP/P1P1P1P1/8/1RK5/1R6 b - - 0 1 >> >> >>I completely agree. Material may tell the programm that white is better, but if >>no progress can be made then the engine can as well output 0.00 because it >>doesn't see a win. In addition you could also easily check if the position >>allows captureing of pieces in the search tree, and if no capture can be found >>in the whole search tree, then evidence is strong that it is a draw. > >This condition does not happen and program can find a lot of captures in the >search tree. > >There are ways to solve the problem but not the way that you suggest. > >Uri Maybe not im rook endgames, but in bishop endgames it is often the case. Anyway, in the above position there is also no capture that make doesn't lose a rook immediately. :) regards Andy
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