3
8
1
2
2
5
8
4
7
3
8
6
6
5
1
3
4
8
4
7
2
9
4
6
6
3
2
1
Time 00:00
Mistakes 0
Ready
Expert Sudoku #211
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 61.8 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 9, column 3 already sees all eight other digits in its row, column and box, so it can only be 7.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.