5
4
1
9
2
6
8
3
4
8
1
6
5
7
5
2
5
8
3
1
9
4
2
5
4
8
3
6
9
1
Time 00:00
Mistakes 0
Ready
Easy Sudoku #83
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 4 already sees all eight other digits in its row, column and box, so it can only be 4.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.