7
5
9
1
6
9
3
7
9
6
5
1
4
2
1
3
5
8
2
1
9
5
7
5
9
7
8
1
8
6
4
7
5
2
5
9
Time 00:00
Mistakes 0
Ready
Easy Sudoku #81
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 36 of 81 |
| Technique score | 75.3 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 6, column 4 already sees all eight other digits in its row, column and box, so it can only be 3.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.