7
1
8
3
7
9
5
9
6
6
1
8
8
5
2
7
1
6
2
6
8
9
4
4
1
2
Time 00:00
Mistakes 0
Ready
Expert Sudoku #33
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 26 of 81 |
| Technique score | 61.7 |
| Rated techniques | 6 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 6 already sees all eight other digits in its row, column and box, so it can only be 4.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.