1
4
3
6
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9
5
9
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8
2
9
3
3
2
8
1
2
4
9
8
9
2
1
6
5
Time 00:00
Mistakes 0
Ready
Medium Sudoku #159
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 27 of 81 |
| Technique score | 102 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 5, column 8 already sees all eight other digits in its row, column and box, so it can only be 6.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.