Very difficult sudoku #1662
| 7 | 3 | 6 | ||||||
| 1 | 3 | 5 | 9 | |||||
| 7 | ||||||||
| 6 | 1 | 9 | 4 | 7 | ||||
| 3 | 4 | 2 | ||||||
| 4 | 7 | 8 | 9 | 5 | ||||
| 9 | ||||||||
| 2 | 4 | 7 | 1 | |||||
| 8 | 1 | 2 |
Puzzle Completed
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