4
1
9
7
3
1
7
3
8
9
7
6
2
6
8
2
3
4
5
6
6
4
2
8
6
1
Time 00:00
Mistakes 0
Ready
Medium Sudoku #40
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 26 of 81 |
| Technique score | 92 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 8, column 9 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.