Trellis
- Killer cages
- Kropki dots
- XV and number dots
- Whisper lines
The brief
- Normal Sudoku rules apply.
- German Whispers - each digit along a green German Whisper line differs in value from its neighbor by at least 5.
- XV sums - digits separated by an X sum to a value of 10; digits separated by a V sum to a value of 5. No negative constraint.
- Ratio Kropki dots - digits separated by a black dot have a value ratio of 1:2. No negative constraint.
- Killer Cages - digits inside a killer cage are distinct and add up to the number in the top left corner of the cage.
