7
3
8
5
3
8
5
1
3
1
7
4
4
7
6
9
2
8
7
4
1
1
9
2
8
4
2
3
1
Time 00:00
Mistakes 0
Ready
Expert Sudoku #132
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 29 of 81 |
| Technique score | 39.4 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 5 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.