5
2
9
7
7
5
8
2
1
7
5
1
8
4
7
4
9
1
8
3
9
1
3
5
8
9
2
1
9
5
1
2
Time 00:00
Mistakes 0
Ready
Expert Sudoku #226
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 32 of 81 |
| Technique score | 48.7 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 1, 1 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.