4
8
9
7
5
9
8
3
2
1
6
9
2
5
2
4
1
3
6
7
5
6
3
4
7
9
6
4
2
7
5
2
5
6
7
1
Time 00:00
Mistakes 0
Ready
Easy Sudoku #189
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 36 of 81 |
| Technique score | 72 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 1 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.