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

Given Values - Values found by backtracking