8
2
1
9
1
8
6
3
6
4
5
1
2
5
7
8
9
4
4
1
2
6
9
8
3
6
5
8
1
Time 00:00
Mistakes 0
Ready
Medium Sudoku #38
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 29 of 81 |
| Technique score | 120.5 |
| Rated techniques | 6 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 1 already sees all eight other digits in its row, column and box, so it can only be 7.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.