Sudoku for 23 February 2008
Fill the grid so that all rows, all columns and all 3x3 regions contain the numbers 1 to 9.
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Rating: medium
| | 5 | | 3 | | | 6 | | |
| | | | | | 5 | | | 1 |
| 3 | | 2 | | 7 | | | | |
| | | 3 | 1 | 2 | | 9 | 4 | |
| | | 1 | | | | 7 | | |
| | 4 | 7 | | 3 | 8 | 1 | | |
| | | | | 8 | | 2 | | 9 |
| 2 | | | 6 | | | | | |
| | | 6 | | | 2 | | 8 | |
Rating: hard
| | | | | 1 | 3 | | 2 | 9 |
| | | | 5 | | | | | |
| | 9 | | | | 4 | | | 3 |
| | 7 | | | | 1 | | | 4 |
| | 8 | 9 | | | | 6 | 5 | |
| 4 | | | 3 | | | | 7 | |
| 7 | | | 2 | | | | 1 | |
| | | | | | 8 | | | |
| 2 | 1 | | 9 | 4 | | | | |
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