4
3
9
6
1
5
2
3
8
4
6
8
2
5
6
7
2
9
8
9
4
1
8
7
6
Time 00:00
Mistakes 0
Ready
Medium Sudoku #165
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 25 of 81 |
| Technique score | 99.1 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 8 already sees all eight other digits in its row, column and box, so it can only be 3.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.