
0 0 0  7 0 0  0 0 0
7 0 0  0 0 6  0 4 0
0 3 0  8 0 0  7 0 0

6 0 0  4 0 0  1 0 0
0 0 0  0 8 0  0 0 0
0 0 8  0 0 3  0 0 7

0 0 5  0 0 2  0 8 0
0 2 0  1 0 0  0 0 9
0 0 0  0 0 8  0 0 0

hard
