4
2
5
4
3
8
1
6
3
9
7
1
4
2
3
3
4
8
4
6
3
1
5
7
1
5
9
4
6
9
4
8
Time 00:00
Mistakes 0
Ready
Medium Sudoku #163
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 32 of 81 |
| Technique score | 89.6 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 2 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.