6
2
7
8
5
4
2
1
5
5
8
1
4
3
2
5
6
9
2
3
7
5
1
7
9
2
8
8
9
5
Time 00:00
Mistakes 0
Ready
Medium Sudoku #173
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 30 of 81 |
| Technique score | 93.3 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 5, column 9 already sees all eight other digits in its row, column and box, so it can only be 8.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.