3
9
4
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8
7
2
7
2
4
3
9
6
2
3
4
8
5
7
4
3
8
7
6
2
9
4
6
5
5
4
9
7
2
3
8
Time 00:00
Mistakes 0
Ready
Easy Sudoku #157
Solvable by scanning alone — naked and hidden singles. A calm warm-up.
| Difficulty | Easy |
| Clues given | 36 of 81 |
| Technique score | 72 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 7 already sees all eight other digits in its row, column and box, so it can only be 1.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.