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初92.在中国象棋盘上,“马”在起始位置。 (1)证明无论“马”怎样走,必经偶数步才能吃掉对方在起始位置的“将”; (2)若去掉河界,问“马”能否从起始位置跳到棋盘上的每个位置仅一次,且又回到最初的起始位置?
At the beginning 92. On the Chinese chess board, “horse” is in the starting position. (1) To prove that no matter how “horses” go, they must take even steps to eat each other’s “will” at the starting position; (2) If you remove the river boundary, ask whether “horse” can jump from the starting position to the board. Each position only once, and back to the original starting position?