8
1
3
5
9
1
3
5
8
4
6
5
3
1
2
1
5
4
2
1
5
8
3
3
4
5
4
9
6
1
3
2
7
4
9
8
9
6
4
7
Time 00:00
Mistakes 0
Ready
Easy Sudoku #227
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 40 of 81 |
| Technique score | 64.9 |
| Rated techniques | 2 |
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 7.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.