Very difficult sudoku #590
| 8 | 2 | |||||||
| 5 | 7 | 3 | 4 | |||||
| 2 | 6 | |||||||
| 3 | 4 | 7 | 6 | |||||
| 6 | 1 | 7 | 8 | |||||
| 2 | 8 | 5 | 1 | |||||
| 1 | 5 | |||||||
| 6 | 4 | 1 | 7 |
Puzzle Completed
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