Very difficult sudoku #3181
| 2 | 7 | |||||||
| 1 | 7 | |||||||
| 4 | 1 | 5 | 8 | |||||
| 2 | 9 | 4 | ||||||
| 5 | 1 | 8 | ||||||
| 5 | 1 | 9 | ||||||
| 3 | 2 | |||||||
| 6 | 7 | 8 | 4 | 3 | ||||
| 3 | 7 | 4 |
Puzzle Completed
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