7
9
8
4
6
3
8
7
5
5
1
4
8
6
1
9
1
2
9
5
2
7
4
3
7
4
9
Time 00:00
Mistakes 0
Ready
Expert Sudoku #30
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 27 of 81 |
| Technique score | 79.2 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 4, 4 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.