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