2
9
1
3
8
1
7
4
1
4
9
5
4
2
3
8
5
1
5
6
8
1
6
7
6
2
7
3
5
9
2
1
Time 00:00
Mistakes 0
Ready
Easy Sudoku #80
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 32 of 81 |
| Technique score | 80.9 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 8 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.