Author: John Scalo
Date: 23:43:00 02/23/98
What is the most effective way to incorporate a trade-down bonus into a chess program? I'm realizing the need for this after playing a game with my program where it was up two pawns, but we each had both rooks and some pawns. It could have traded rooks on several occasions but instead tried to nickel and dime me in the position. While it was doing that, I snuck the rooks up near the king and managed a draw by rep. I could not never done this with just one rook. Apparently the Chess 4.5 algorithm was material advantage = MIN(2400, MD) + MD*PA*(8000-MT)/(6400*(PA+1)) where MD = material difference PA = number of pawns on the winning side MT = total material on the board and this adheres to the "trade pieces not pawns when you're ahead" strategy. But surely this has evolved since then? Thank
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