9
3
1
3
6
4
5
9
2
7
2
5
4
7
2
5
1
9
4
7
3
2
1
8
1
3
2
Time 00:00
Mistakes 0
Ready
Expert Sudoku #238
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 27 of 81 |
| Technique score | 72.2 |
| Rated techniques | 6 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 2, 9 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.