2
3
8
7
6
5
9
8
7
1
5
6
6
5
3
4
2
3
7
8
4
5
1
6
5
3
9
6
Time 00:00
Mistakes 0
Ready
Expert Sudoku #50
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 57.2 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 2, column 4 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.