Normal sudoku rules apply. Finkz and Phinx must both reach different cupcakes by finding a path through the maze. The paths must not visit any cell more than once, share cells, cross themselves or each other, or pass through any thick maze walls. As well as moving orthogonally, they may move diagonally if there's a 2x2 space in which to do so, but may never pass diagonally through a round wall-spot on the corner of a cell. Much of the grid is obscured by fog. Entering correct digits may clear fog somewhere in the grid. No guessing is necessary. If a blackcurrant sits between two digits, one is double the other. If a grape sits between two digits, they have a difference of at least 5. If a starfruit sits between two digits, they always have the same sum, to be determined. Every coloured circular button must be visited. The digit on a button indicates the number of cells that the rat moves after the button to arrive in a different 3x3 box. (Eg: if the rat moves immediately from the button into a new 3x3 box, the button would contain a 1.) A digit on a path may not be consecutive with the digit visited immediately before it.