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