2
8
5
2
1
8
5
4
4
2
8
7
6
3
5
1
9
7
8
2
5
9
3
7
9
Time 00:00
Mistakes 0
Ready
Medium Sudoku #109
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 25 of 81 |
| Technique score | 98.8 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 5, column 1 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.