Author: Larry Griffiths
Date: 11:55:10 06/26/00
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On June 26, 2000 at 12:31:22, ujecrh wrote: >I wonder if it has already been tried or if it is not useful/feasible at all. > >The idea is that, excepting special moves like castle or en-passant we could >easilly generate all possible moves for all possible piece/square at the very >start of the engine. It would fill some arrays (like >rook_moves[square][directions][moves/or destination square])with a total of >about 4000 entries. > >Having not to generate moves during the search itself might save some time and >even a slow move generator wold not be a problem as it would be called only at >initialization of the engine. > >Is that completely wrong ? > >Ujecrh It is not completely wrong :) Writing a chess engine means going down rabbit trails sometimes :) You will learn things if you try out your ideas. It is my belief that you would be spending time looking at moves and testing squares to see when a sliding sequence is blocked, or checking that the moves are valid. Capture moves usually result in cut-offs a lot more than non-capture moves so the idea is to be able to generate only capture moves for all the pieces hoping for a cutoff, then generating non-capture moves if a cut-off does not occur. Larry
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