7
8
4
6
9
6
7
2
2
4
7
5
9
6
7
3
8
7
4
6
1
9
3
6
5
2
4
1
6
5
2
1
7
Time 00:00
Mistakes 0
Ready
Easy Sudoku #31
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 33 of 81 |
| Technique score | 77.1 |
| 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 3.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.