9
4
1
3
8
5
7
1
8
5
8
1
7
4
3
9
9
2
2
1
4
5
3
3
6
9
7
Time 00:00
Mistakes 0
Ready
Easy Sudoku #231
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 27 of 81 |
| Technique score | 96 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 4 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.