6
7
9
4
9
5
1
4
2
2
5
6
1
6
7
6
5
7
9
4
1
7
9
3
2
8
9
Time 00:00
Mistakes 0
Ready
Expert Sudoku #185
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 27 of 81 |
| Technique score | 132.4 |
| Rated techniques | 6 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 7 already sees all eight other digits in its row, column and box, so it can only be 3.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.