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Time 00:00
Mistakes 0
Ready
Expert Sudoku #149
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 28 of 81 |
| Technique score | 10.4 |
| Rated techniques | 1 |
Techniques this puzzle needs
Where to start
The first move on this board is a Hidden Single: In this row 5, 7 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.