2
3
8
7
5
7
2
8
9
8
5
4
8
5
7
4
4
1
2
1
2
9
3
6
3
9
3
7
2
Time 00:00
Mistakes 0
Ready
Easy Sudoku #21
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 29 of 81 |
| Technique score | 93.2 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 2 already sees all eight other digits in its row, column and box, so it can only be 1.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.