6
6
7
1
5
9
1
2
6
3
6
4
2
6
4
7
8
9
7
9
2
6
2
8
3
5
7
1
7
4
9
Time 00:00
Mistakes 0
Ready
Easy Sudoku #158
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 31 of 81 |
| Technique score | 86.5 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 7, column 3 already sees all eight other digits in its row, column and box, so it can only be 6.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.