5
4
6
3
9
8
4
7
1
8
2
6
1
2
4
8
7
5
6
5
3
4
7
9
7
9
3
Time 00:00
Mistakes 0
Ready
Easy Sudoku #53
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 27 of 81 |
| Technique score | 90 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 2 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.