7
1
9
3
3
8
6
8
6
9
9
8
2
7
4
9
4
5
7
8
2
9
1
5
5
4
9
1
Time 00:00
Mistakes 0
Ready
Expert Sudoku #44
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 49 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 3, column 1 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.