3
5
5
6
2
9
3
7
7
1
3
4
1
4
7
2
3
6
1
6
4
7
8
2
9
6
8
Time 00:00
Mistakes 0
Ready
Expert Sudoku #230
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 27 of 81 |
| Technique score | 40.9 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 2, 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.