Fri, 01 Feb 2013 10:18:47 +0100
removed completeness test - the solver automatically returns false when the field is incomplete
| 7 | 1 | _ _ _ 1 9 _ _ _ 8 |
| 2 | 1 _ _ 2 _ 7 9 6 _ | |
| 3 | 6 9 _ _ _ 4 _ _ _ | |
| 4 | _ _ _ _ _ _ 1 _ _ | |
| 5 | _ 5 _ 6 _ 9 _ 7 _ | |
| 6 | _ _ 3 _ _ _ _ _ _ | |
| 7 | _ _ _ 9 _ _ _ 8 1 | |
| 8 | _ 1 6 7 _ 8 _ _ 3 | |
| 9 | 9 _ _ _ 1 2 _ _ _ |