I've been working on this one off and on for several months. I've started over several times and always end up stuck at the same place. Can someone please give me a clue as to what I am missing?
5 1 6,8 | 2 3 9 | 4 6,8 7 |
3,6,7 4 2 | 6,7 5 8 | 9 3,6 1 |
3,6,7,8 3,6,7,8,9 3,6,8,9 | 1 6,7 4 | 5 3,6,8 2 |
4 3,6,8 3,6,8 | 9 1,8 2 | 1,3 7 5 |
1,8 2 5 | 7,8 1,7,8 3 | 6 9 4 |
1,3,7 3,7,9 3,9 | 5 4 6 | 1,3 2 8 |
9 6,8 4 | 6,8 2 1 | 7 5 3 |
3,6,8 3,6,8 7 | 4 6,8 5 | 2 1 9 |
2 5 1 | 3 9 7 | 8 4 6 |