4
5
3
7
6
7
9
2
4
5
5
2
7
7
3
1
4
3
6
5
8
2
1
2
6
9
7
9
6
7
1
3
9
4
5
2
8
6
2
9
Time 00:00
Mistakes 0
Ready
Easy Sudoku #47
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 4, column 8 already sees all eight other digits in its row, column and box, so it can only be 8.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.