5
9
4
3
6
7
6
8
6
1
3
8
9
3
9
6
1
8
8
7
5
1
4
6
3
8
9
2
7
Time 00:00
Mistakes 0
Ready
Medium Sudoku #172
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 29 of 81 |
| Technique score | 103.4 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 1 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.