Very difficult sudoku #830
| 6 | ||||||||
| 2 | 3 | 5 | ||||||
| 5 | 9 | 3 | ||||||
| 3 | 1 | |||||||
| 8 | 5 | 4 | ||||||
| 8 | 6 | 7 | 3 | |||||
| 9 | 4 | 1 | 8 | |||||
| 4 | 7 | |||||||
| 1 | 7 | 4 |
Puzzle Completed
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