Estimated value 估計的價值: a-b+y2-y1+d1-d2 a: The sum of the maximum number of steps you can take for each chess piece 每個棋子可以走的最大步數的總和 b: The sum of the maximum number of steps the opponent can take for each chess piece 對手每顆棋子可以走的最大步數的總和 y2: The original y coordinate of the chess piece 棋子的原始y坐標 y1: The y coordinate of the chess piece after moving 棋子移動後的y坐標 d1: The distance between the chess piece and the target after the move 走棋后棋子與目標的距離 d2: The distance between the moving chess piece and the target 移動棋子與目標之間的距離