
1 0 0  4 0 0  0 0 6
0 4 6  0 9 1  0 8 0
0 0 5  0 2 0  0 0 0

0 0 0  5 0 0  1 0 9
0 9 0  0 0 0  0 5 0
4 0 2  0 0 9  0 0 0

0 0 0  0 1 0  9 0 0
0 8 0  9 3 0  5 6 0
5 0 0  0 0 8  0 0 4

hard
