3
4
7
2
6
7
2
3
4
9
6
8
7
9
8
3
2
3
7
5
7
2
9
5
7
3
4
1
Time 00:00
Mistakes 0
Ready
Expert Sudoku #223
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 31.6 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 4, 3 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.