n阶方阵，即n*n个空格，填入n*n个数，

要求：

所有的行和列上，还有对角线上

的数字和相等（n>=3).

例： 8 1 6

3 5 7

4 9 2

-What other ways can be put forward..

9 Palace solution to the problem.

If there is something wrong with the situation being.thank you very much.