5
4
8
4
2
9
8
6
7
8
9
7
6
6
3
8
1
5
6
1
9
5
8
3
4
7
8
2
1
5
Time 00:00
Mistakes 0
Ready
Easy Sudoku #78
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 30 of 81 |
| Technique score | 84 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 7, column 1 already sees all eight other digits in its row, column and box, so it can only be 9.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.