1
8
5
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6
1
6
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9
8
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6
6
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4
9
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7
2
6
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6
5
5
3
7
7
4
Time 00:00
Mistakes 0
Ready
Expert Sudoku #82
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 67.7 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 4, column 3 already sees all eight other digits in its row, column and box, so it can only be 5.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.