Very difficult sudoku #3519
| 3 | 4 | 7 | ||||||
| 7 | 9 | 6 | ||||||
| 2 | 9 | |||||||
| 4 | 5 | |||||||
| 1 | 6 | 3 | ||||||
| 1 | 2 | |||||||
| 2 | 3 | |||||||
| 1 | 3 | 9 | 7 | |||||
| 9 | 7 | 8 | 6 |
Puzzle Completed
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