9
4
5
3
8
7
4
5
9
1
8
9
7
9
1
3
6
3
8
1
2
9
8
8
7
1
1
2
6
Time 00:00
Mistakes 0
Ready
Expert Sudoku #129
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 29 of 81 |
| Technique score | 48 |
| Rated techniques | 2 |
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.