6
9
5
8
3
7
6
4
4
5
7
6
7
4
1
5
3
9
6
1
8
6
4
1
1
9
4
2
Time 00:00
Mistakes 0
Ready
Expert Sudoku #144
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 25 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 6, 5 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.