1
4
8
3
3
8
8
3
6
7
2
2
8
3
1
9
8
9
9
1
7
6
1
3
5
5
2
3
Time 00:00
Mistakes 0
Ready
Expert Sudoku #131
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 45.8 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 1, 2 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.