Normal sudoku rules apply. In cages, digits must sum to the small clue in the top left corner of the cage (if given). Digits cannot repeat within a cage. Find an orthogonally connected path that starts and ends in the green cells. Digits on the path that are inside killer cages must be low (4 or lower); cells on the path that are outside of killer cages must be high (6 or higher). The path does not touch itself orthogonally or diagonally.