Sudoku · sdk5-m-kknktb
9 × 9 · Max 9 · medium
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| 2 | Empty | Empty | Empty | Empty | 5 | 4 | Empty | Empty |
| Empty | 5 | 9 | Empty | Empty | 4 | Empty | 8 | Empty |
| Empty | 7 | 4 | 8 | Empty | Empty | 1 | Empty | Empty |
| Empty | Empty | Empty | Empty | 9 | 8 | 7 | 4 | Empty |
| Empty | Empty | Empty | Empty | 1 | Empty | Empty | 3 | 9 |
| Empty | Empty | Empty | 3 | Empty | 6 | Empty | 5 | Empty |
| 1 | Empty | Empty | Empty | Empty | Empty | Empty | Empty | Empty |
| Empty | 8 | 6 | Empty | Empty | Empty | Empty | Empty | Empty |
| Empty | Empty | 5 | 9 | Empty | Empty | Empty | Empty | Empty |