4
2
3
5
8
2
6
4
6
4
1
4
7
8
9
9
6
7
9
3
4
1
5
7
3
5
4
6
Time 00:00
Mistakes 0
Ready
Medium Sudoku #179
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 28 of 81 |
| Technique score | 108.4 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 4 already sees all eight other digits in its row, column and box, so it can only be 9.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.