Very difficult sudoku #3470
| 5 | 6 | 2 | 1 | 7 | 9 | |||
| 7 | 1 | 6 | 2 | 4 | ||||
| 5 | 9 | 1 | 4 | |||||
| 8 | 5 | 4 | ||||||
| 4 | 1 | |||||||
| 5 | 8 | |||||||
| 4 | 1 | 7 | 3 | |||||
| 9 | 6 |
Puzzle Completed
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