3
6
8
3
1
1
5
8
5
7
5
8
6
9
2
4
1
4
1
9
1
7
8
3
9
2
Time 00:00
Mistakes 0
Ready
Expert Sudoku #113
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 26 of 81 |
| Technique score | 31 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 5, column 1 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.