Author: Severi Salminen
Date: 05:09:35 01/28/01
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>You may have a bug here. You are mixing up MVV/LVA scores with SEE ones so you >shouldn't quit in the first move that fails the test. Suppose knight takes rook. >You assign it a score of +2 (well, depends on your material eval but it should >be close). If you did SEE you might find that that rook is hung and can be >captured for free (that makes it +5). So you can only stop searching at the >first move if all your scores are SEE ones. > >That's a 3 pawn difference. You could prune this winning move because of the >material(node)+see_score(move)+MARGIN>alpha condition, unless you have a MARGIN >of 3 pawns, which is probably ineficcient. Just a thought. I have to test. When mixing MVV and SEE scores I indeed allways make MVV score "the worst case". Maybe doing SEE for all moves might help. But I believe everybody mix SEE and MVV and use MVV where you really have a winning capture. BTW my margin is 1 pawn. Severi
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