Very difficult sudoku #511
| 2 | 5 | 8 | 7 | |||||
| 9 | 1 | |||||||
| 9 | 8 | |||||||
| 9 | 6 | 5 | 7 | |||||
| 2 | 9 | |||||||
| 4 | 2 | 3 | 5 | |||||
| 6 | 3 | |||||||
| 7 | 4 | |||||||
| 5 | 8 | 3 | 4 |
Puzzle Completed
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