5
4
9
8
4
5
9
3
1
2
5
7
6
8
5
2
3
1
2
9
7
6
8
5
Time 00:00
Mistakes 0
Ready
Medium Sudoku #3
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 24 of 81 |
| Technique score | 102.6 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 9, column 9 already sees all eight other digits in its row, column and box, so it can only be 4.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.