解决八皇后问题：即在8X8格的国际象棋上摆放八个皇后，使其不能互相攻击，即任意两个皇后都不能处于同一行、同一列或同一斜线上，问有多少种摆法。-Solve the eight queens problem: that is placed on a 8X8 grid chess eight Queen, so that it can not attack each other, that is, any two Queens are not in the same line, same column or diagonal, asked how many kinds of pendulum method .