Green, Purple, Green
- Kropki dots
- Whisper lines
- Renban lines
The brief
- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.
- German Whispers: Adjacent digits on a green line must have a difference of at least 5.
- Renban: Each purple line must contain a set of consecutive non-repeating digits in any order.
- Kropki dots: Digits joined by a black dot have a 1:2 ratio. Digits joined by a white dot are consecutive. (Not all dots are given.)