Very difficult sudoku #669
| 7 | 9 | 4 | 8 | 2 | ||||
| 8 | 4 | 7 | 3 | |||||
| 5 | 2 | 7 | ||||||
| 3 | ||||||||
| 1 | 4 | 7 | 2 | |||||
| 9 | 5 | 4 | ||||||
| 6 | 3 | 5 | ||||||
| 8 | 7 | |||||||
| 1 | 8 | 9 |
Puzzle Completed
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