Normal sudoku rules apply. Finkz the rat must reach the cupcake by finding a path through the maze. The path must not visit any cell more than once, cross itself, or pass through any thick maze walls. As well as moving orthogonally, Finkz 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. Digits connected by a blackcurrant have a 1:2 ratio. All cages have the same total, to be deduced. An electricity symbol indicates the cage's ‘shock value’. Finkz may not enter any cage with a shock value of 5 or higher. Cages with a shock value lower than 5 are safe to enter. In this experiment, dotted 3x3 box borders divide the correct path into segments. The total of each segment must be higher than the total of the previous segment on Finkz' path.