8
7
5
6
9
2
7
2
5
3
3
6
2
1
8
6
9
3
9
6
1
4
8
7
3
2
Time 00:00
Mistakes 0
Ready
Medium Sudoku #87
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 26 of 81 |
| Technique score | 91.1 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 3, column 3 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.