Normal sudoku rules apply. The grid is partially covered in dynamic fog. Correctly placed digits may remove fog from other cells. Guessing is not required. German Whispers: Along green lines, digits must differ from their neighbours by at least 5. Killer: Digits do not repeat in cages, and sum to the small clue in the top left corner if given. Renban: Purple lines contain a non-repeating set of consecutive digits in any order. Parity: Along a peach line, adjacent digits must alternate between odd and even. Kropki: Digits in cells separated by a black dot have a 1:2 ratio. Each constraint type may contain no repeated digits anywhere in the puzzle. E.g. ALL renban cells must contain no repeated digits, ALL cells connected by a kropki dot must contain no repeated digits etc.