3
5
7
2
7
8
1
4
6
4
9
8
2
8
4
5
1
7
6
3
2
4
5
7
9
2
7
5
5
7
1
4
4
2
5
1
Time 00:00
Mistakes 0
Ready
Easy Sudoku #160
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 36 of 81 |
| Technique score | 72.9 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 3 already sees all eight other digits in its row, column and box, so it can only be 8.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.