Crazy Bats (Fledermäuse)
- XV and number dots
- Whisper lines
The brief
Normal Sudoku rules apply. Numbers on red lines are at least 4 apart from their neighbors on the line. Numbers in dashed areas sum to the number in the top left corner of the area. Numbers may repeat on lines and in dashed areas. Numbers with a V between them sum to 5. Not all possible V are given.