7
4
5
7
7
6
2
4
3
7
6
9
8
6
3
2
5
7
2
3
8
5
1
9
7
9
2
6
3
Time 00:00
Mistakes 0
Ready
Easy Sudoku #139
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 29 of 81 |
| Technique score | 85.1 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 7, column 6 already sees all eight other digits in its row, column and box, so it can only be 1.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.