5
8
8
7
5
7
9
8
6
3
9
4
6
2
4
4
2
3
9
5
9
1
8
3
7
9
9
8
Time 00:00
Mistakes 0
Ready
Expert Sudoku #198
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 40.2 |
| Rated techniques | 2 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 2, 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.