2
8
7
7
1
3
5
7
4
8
5
9
7
1
2
4
9
2
9
3
5
8
1
8
7
4
Time 00:00
Mistakes 0
Ready
Expert Sudoku #84
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 26 of 81 |
| Technique score | 67 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 2, 8 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.