Very difficult sudoku #3664
| 5 | 8 | |||||||
| 2 | 6 | 7 | ||||||
| 1 | 4 | |||||||
| 6 | 5 | 4 | 3 | |||||
| 1 | 5 | 6 | ||||||
| 3 | 2 | |||||||
| 2 | 5 | |||||||
| 7 | 8 | 9 | 3 | 1 | ||||
| 9 | 1 | 4 | 2 |
Puzzle Completed
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