4
2
9
1
8
9
5
9
8
1
6
4
2
7
3
2
3
8
1
8
5
4
6
5
8
3
7
1
3
Time 00:00
Mistakes 0
Ready
Easy Sudoku #213
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 29 of 81 |
| Technique score | 87.8 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 2 already sees all eight other digits in its row, column and box, so it can only be 5.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.