Very difficult sudoku #670
| 5 | ||||||||
| 2 | 5 | 1 | 3 | |||||
| 6 | 2 | 7 | ||||||
| 1 | 2 | 5 | 7 | |||||
| 6 | 7 | |||||||
| 5 | 4 | 2 | ||||||
| 5 | 1 | 2 | 6 | 9 | ||||
| 9 | 4 | 8 | 5 | |||||
| 8 | 5 | 7 | 6 |
Puzzle Completed
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