4
8
3
2
7
5
9
3
5
1
7
3
6
7
6
8
2
5
4
5
7
2
9
4
6
3
Time 00:00
Mistakes 0
Ready
Expert Sudoku #205
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 26 of 81 |
| Technique score | 25 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 9, 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.