7
2
8
8
3
1
2
1
7
3
5
2
7
5
9
8
1
6
3
8
9
5
2
3
2
9
Time 00:00
Mistakes 0
Ready
Expert Sudoku #116
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 26 of 81 |
| Technique score | 88.4 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 1, 3 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.