该问题主要用于解决八皇后问题。会下国际象棋的人都很清楚:皇后可以在横、竖、斜线上不限步数地吃掉其他棋子。如何将8个皇后放在棋盘上(有8*8个方格),使它们谁也不能被吃掉!这就是著名的八皇后问题。-The problem is mainly used to solve the issue of the eight Queen
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