9
2
4
8
6
1
2
5
7
8
5
1
7
3
4
5
1
8
7
6
1
6
6
5
5
2
9
6
3
1
4
Time 00:00
Mistakes 0
Ready
Easy Sudoku #130
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 31 of 81 |
| Technique score | 82.9 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 3 already sees all eight other digits in its row, column and box, so it can only be 2.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.