8
2
5
7
2
5
3
3
6
7
4
9
2
3
8
1
7
8
4
9
9
5
3
6
8
Time 00:00
Mistakes 0
Ready
Expert Sudoku #1
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 25 of 81 |
| Technique score | 55.3 |
| Rated techniques | 5 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 7, column 3 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.