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