Very difficult sudoku #2688
| 9 | ||||||||
| 8 | 1 | 7 | ||||||
| 7 | 5 | 3 | 1 | |||||
| 4 | 8 | |||||||
| 6 | 7 | |||||||
| 1 | 4 | 3 | ||||||
| 6 | 2 | |||||||
| 4 | 3 | 9 | 6 | 7 | 8 | |||
| 7 | 8 | 4 | 9 |
Puzzle Completed
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