3
9
8
5
1
4
7
2
9
5
1
3
8
9
1
4
5
7
4
6
8
2
1
4
2
9
6
5
9
7
1
Time 00:00
Mistakes 0
Ready
Medium Sudoku #53
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 31 of 81 |
| Technique score | 93.1 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 7 already sees all eight other digits in its row, column and box, so it can only be 6.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.