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。-Eight queens problem the famous 19th century mathematician Gauss in the 1850' s. His question is: 8* 8 board to place eight queens, so that it can not attack each other, that any two queens can not be in the same line, same column, the same diagonal. Please print all the possible design of algorithms display method.