5
4
4
9
5
3
8
1
8
9
7
2
3
6
4
1
8
6
1
9
7
1
9
2
3
Time 00:00
Mistakes 0
Ready
Expert Sudoku #235
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 25 of 81 |
| Technique score | 72.1 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 5, column 2 already sees all eight other digits in its row, column and box, so it can only be 5.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.