6
2
4
3
5
9
3
9
3
2
8
9
5
8
6
7
5
6
9
4
5
6
2
5
1
7
6
9
4
5
Time 00:00
Mistakes 0
Ready
Easy Sudoku #90
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 30 of 81 |
| Technique score | 86.1 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 1, 9 can only go in one cell, so it must go there.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.