八皇后问题19世纪著名的数学家高斯于1850年提出的。他的问题是：在8*8的棋盘上放置8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、同一斜线上。请设计算法打印所有可能的摆放方法。-8 queens problems in the 19 th century famous mathematician gauss put forward in 1850. His problem is: in 8* 8 board placed eight queen, to make it can t attack each other, that is, any two queen can in the same line, the same column, the same diagonal lines. Please print all the design algorithm may put method.