2
7
8
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8
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2
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7
5
3
2
8
6
8
4
9
7
8
6
1
4
8
3
9
Time 00:00
Mistakes 0
Ready
Hard Sudoku #194
Advanced patterns: X-Wings, triples and tighter candidate logic.
| Difficulty | Hard |
| Clues given | 26 of 81 |
| Technique score | 104.6 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 3, 8 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.