3
4
1
9
9
7
5
8
4
3
1
7
7
5
9
2
8
6
4
3
4
9
1
7
3
4
5
9
4
2
6
3
7
9
4
5
Time 00:00
Mistakes 0
Ready
Easy Sudoku #167
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 36 of 81 |
| Technique score | 71.1 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 6 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.