8
3
9
2
6
5
2
5
4
7
9
7
1
6
2
1
4
9
1
6
4
5
8
7
8
3
Time 00:00
Mistakes 0
Ready
Medium Sudoku #139
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 2, column 5 already sees all eight other digits in its row, column and box, so it can only be 1.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.