在8×8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。 高斯认为有76种方案。计算机发明后，有多种计算机语言可以解决此问题。(There are eight queens on the 8 x 8 chess set, so that they can not attack each other, that is, any two Queens can not be in the same line, the same column or the same slash, and ask how many kinds of pendulum methods. Gauss thinks there are 76 kinds of solutions. After the invention of computer, there are various computer languages to solve this problem.)