9
8
3
4
9
8
7
5
7
2
4
9
2
4
6
8
4
8
1
5
2
2
5
1
9
4
7
Time 00:00
Mistakes 0
Ready
Expert Sudoku #58
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 27 of 81 |
| Technique score | 67.8 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 6, column 7 already sees all eight other digits in its row, column and box, so it can only be 7.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.