1
7
6
8
6
9
2
9
8
4
9
2
7
4
1
1
6
8
5
8
3
4
1
6
3
7
5
8
Time 00:00
Mistakes 0
Ready
Hard Sudoku #27
Advanced patterns: X-Wings, triples and tighter candidate logic.
| Difficulty | Hard |
| Clues given | 28 of 81 |
| Technique score | 116.2 |
| Rated techniques | 6 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 1, 9 can only go in one cell, so it must go there.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.