2 3 0 0 0 0 1 0 8
1 0 0 9 4 0 6 0 0
9 5 0 0 0 1 0 0 0
0 0 8 0 0 0 0 0 0
0 0 0 0 9 0 0 0 7
0 0 0 4 0 6 0 0 0
7 0 0 0 0 0 0 3 0
0 0 1 2 3 0 8 6 0
0 0 0 0 0 0 2 0 1