6
1
3
5
9
7
3
4
1
8
1
9
7
9
1
7
8
3
6
3
7
6
4
2
7
7
4
5
Time 00:00
Mistakes 0
Ready
Medium Sudoku #219
You will want pencil marks: locked candidates, pairs and triples.
| Difficulty | Medium |
| Clues given | 28 of 81 |
| Technique score | 112.6 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 1, 7 can only go in one cell, so it must go there.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.