4
6
9
3
4
3
8
5
7
1
5
4
9
8
7
2
5
6
4
6
8
5
7
1
5
6
3
3
1
9
7
Time 00:00
Mistakes 0
Ready
Easy Sudoku #36
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 31 of 81 |
| Technique score | 82.9 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 9 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.