4
3
6
9
8
2
9
1
6
5
1
4
3
4
3
8
9
5
2
4
8
4
9
2
4
1
6
9
5
Time 00:00
Mistakes 0
Ready
Easy Sudoku #28
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 29 of 81 |
| Technique score | 88.4 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 2 already sees all eight other digits in its row, column and box, so it can only be 7.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.