6
1
8
5
3
4
8
3
4
7
1
8
2
5
3
8
4
7
5
8
3
1
2
4
9
6
7
2
8
Time 00:00
Mistakes 0
Ready
Medium Sudoku #70
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 29 of 81 |
| Technique score | 101.3 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 8, 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.