8
9
1
9
4
7
5
7
4
5
6
1
1
9
3
5
4
5
9
9
2
8
2
3
1
6
3
2
Time 00:00
Mistakes 0
Ready
Expert Sudoku #67
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 28.6 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 1, 4 can only go in one cell, so it must go there.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.