7
6
5
8
7
3
5
9
1
2
9
4
7
5
4
4
7
1
2
1
8
4
3
9
2
4
9
7
5
1
Time 00:00
Mistakes 0
Ready
Expert Sudoku #53
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 30 of 81 |
| Technique score | 51.6 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 9, column 5 already sees all eight other digits in its row, column and box, so it can only be 3.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.