3
8
6
5
9
7
5
8
9
1
2
8
4
9
6
1
3
2
5
6
4
9
7
3
9
8
3
7
Time 00:00
Mistakes 0
Ready
Expert Sudoku #25
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 37.1 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 6, column 9 already sees all eight other digits in its row, column and box, so it can only be 4.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.