Very difficult sudoku #1789
| 7 | 9 | 4 | ||||||
| 2 | 3 | 1 | 8 | |||||
| 4 | ||||||||
| 1 | 3 | 8 | 6 | |||||
| 3 | 4 | 5 | 9 | |||||
| 6 | 9 | 5 | 4 | |||||
| 1 | ||||||||
| 4 | 5 | 9 | 2 | |||||
| 6 | 1 | 8 |
Puzzle Completed
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