Author: leonid
Date: 15:19:46 11/15/99
Hi, What kind of moves usually are used in each ply search: legal or illigal? Legal (in my dictionary) is the move after which king from your side will be not left under the fire. Move is legal after the logic for given piece. Illegal move - move that only take in cosideration the possibility to execute move after the logic that correspond to this piece. Here you just don't care about the "health insurance" of His Majesty. I make this question because each next ply can also indicate what illegal move must be rejected. If in the next ply king will be taken, this move is illegal. When I tryed to use the illegal moves logic for soving the inevitable mate containing position, logic worked 30% more slowly that logic with legal position. I never tryed the logic with illegal moves that search the "positional move". This is why I make this question. Leonid.
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