n=4的一些解决方案:
0 0 1 2 0 1 0 2 0 1 1 0 0 0 0 1 0 0 0 0
0 0 0 1 0 1 0 2 0 1 1 0 0 0 1 1 0 0 0 0
2 0 0 0 0 1 0 2 0 1 1 0 0 1 1 1 1 1 1 1
2 2 0 0 0 1 0 2 0 1 1 0 1 1 1 2 2 2 2 2
2 2 2 0 0 1 0 2 0 1 1 0 1 1 2 2 1 1 1 1
1 2 2 2 0 1 0 2 0 1 1 0 1 2 2 2 1 1 1 1