6
2
3
2
5
6
5
7
8
2
6
4
6
7
3
2
2
8
9
4
6
1
7
2
8
4
7
4
5
1
8
2
7
3
2
9
7
Time 00:00
Mistakes 0
Ready
Easy Sudoku #217
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 37 of 81 |
| Technique score | 69.1 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 4 already sees all eight other digits in its row, column and box, so it can only be 1.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.