6
8
4
1
3
8
8
7
2
9
2
5
7
6
6
7
9
8
6
3
2
4
2
4
9
7
1
8
6
5
Time 00:00
Mistakes 0
Ready
Easy Sudoku #237
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 30 of 81 |
| Technique score | 83.1 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 7 already sees all eight other digits in its row, column and box, so it can only be 5.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.