Author: Hugh Cumper
Date: 08:11:55 01/24/99
This may be very simple matter to the old pros. When I first wrote a chess program I created a stack of boards for lookahead and copied the current board each time I wanted to look further ahead, discarding it again to go back up. I suppose I did that because I started writing programs for games like Kalah where the board is small and moves are relatively epensive to take back. Recently I have seen programs the have one board and store unmake move information in addition to move information so the move can be retracted. I am trying to think which is more efficient but I can't decide. Has anyone worked this out theoretically or practically?
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