7
2
2
3
9
9
4
2
1
2
5
8
9
7
8
4
6
2
9
1
3
2
8
4
8
2
9
1
9
8
8
6
Time 00:00
Mistakes 0
Ready
Expert Sudoku #143
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 32 of 81 |
| Technique score | 17.7 |
| Rated techniques | 3 |
Techniques this puzzle needs
Where to start
The first move on this board is a Full House: Row 5, column 5 is the last empty cell in its box 5, so it must be 7.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.