8
6
7
9
1
9
6
8
5
2
1
5
3
4
6
8
4
9
2
7
8
2
5
6
1
2
Time 00:00
Mistakes 0
Ready
Expert Sudoku #197
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 26 of 81 |
| Technique score | 68.3 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 3, 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.