Haus Romer, Frankfurt
- Killer cages
- Whisper lines
The brief
Normal Sudoku rules apply. German Whispers Lines- Numbers on green lines are at least 5 apart from their neighbors on the line. Numbers in cages sum to the number in the top left corner of the cage. The three unmarked cages sum to 20 total. The circle is the clock on the building, and has no effect on the puzzle.