n=5的一些解决方案:
1 2 1 2 0 2 0 2 0 2 0 0 0 2 1 1 2 2 2 1
0 0 2 0 1 0 2 1 1 0 0 0 1 1 1 0 2 1 2 2
0 1 1 0 2 0 2 0 2 0 1 1 2 0 1 1 1 1 2 1
1 1 0 0 0 1 1 2 2 1 1 1 1 1 2 1 2 1 2 0
1 2 1 0 2 2 0 2 0 0 2 2 0 2 0 0 2 0 0 1
1 1 0 0 1 0 0 1 2 1 1 1 1 1 0 1 0 1 0 0