Rules:
Normal Sudoku rules apply.
Values inside cages sum to the number in the top left corner of the cage, and values and digits cannot repeat inside a cage.
Every row, column, and box has exactly one owl cell. Every digit from 1 to 9 appears exactly once in the owl cells.
An owl goes to bed late, so an owl's value is increased by 12. For example, the value of an owl's 4 is 4+12=16.
In addition, all the cells adjacent (orthogonally and diagonally) to an owl are frightened and their value is zero. An owl cell cannot be adjacent to another owl cell (they value personal space).
When you determine all the owl cells, frightened cells, and normal cells, normal cells will be split into orthogonally connected groups. In every such group except one, the sum of digits equals 11.
Solution code: First two rows without spaces
on 21. October 2025, 21:02 by dzamie
That was fun! The "sum to 11" rule felt a little random, though it was certainly helpful. Wound up with a very pretty-looking puzzle once I got all the owls placed and cells colored.
on 20. October 2025, 07:20 by stqrlight618
Nice puzzle! The solution code is too long though. Also, you should clarify that "values and digits cannot repeat inside a cage" only refers to nonzero values
Please note: The German version of this page has changed. It is possible that this page does not contain the latest information.