5
8
2
9
4
7
1
2
9
1
3
8
7
9
7
4
8
3
6
8
5
4
5
9
1
Time 00:00
Mistakes 0
Ready
Medium Sudoku #197
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 25 of 81 |
| Technique score | 109.3 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 9, column 7 already sees all eight other digits in its row, column and box, so it can only be 2.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.