3
6
4
7
4
7
2
9
8
4
2
9
4
6
1
6
5
7
3
4
5
6
7
9
3
1
6
Time 00:00
Mistakes 0
Ready
Expert Sudoku #227
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 27 of 81 |
| Technique score | 49.3 |
| Rated techniques | 6 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 9, column 6 already sees all eight other digits in its row, column and box, so it can only be 8.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.