7
4
8
6
7
2
5
4
8
3
9
3
8
6
1
1
4
6
7
9
5
4
8
9
7
5
3
Time 00:00
Mistakes 0
Ready
Easy Sudoku #64
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 27 of 81 |
| Technique score | 89.7 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 7 already sees all eight other digits in its row, column and box, so it can only be 5.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.