6
4
8
5
1
3
5
7
9
2
1
9
3
1
2
4
8
2
4
9
6
5
1
7
4
2
3
5
Time 00:00
Mistakes 0
Ready
Easy Sudoku #140
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 28 of 81 |
| Technique score | 90.7 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 2, 4 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.