7
3
9
8
1
4
2
7
1
2
4
1
9
5
6
2
3
7
2
8
3
3
1
4
6
6
5
9
3
Time 00:00
Mistakes 0
Ready
Easy Sudoku #223
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 29 of 81 |
| Technique score | 89.6 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 9 already sees all eight other digits in its row, column and box, so it can only be 6.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.