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. The maze has been filled with fog. When correct digits are entered, the nearby fog will clear. No guessing is required. Digits connected by a blackcurrant are in a 1:2 ratio (one is double the other.) Not all possible blackcurrants have been given. The digit on a pink motion sensor indicates how many of the (up to 9) cells immediately surrounding the sensor are visited by Finkz - ie; any cells neighbouring the sensor cell (diagonally or orthogonally), as well as the sensor cell itself, are counted, if they lie on the path. Digits don't repeat in a cage. Every cage has an electricity symbol, which indicates its 'shock value'. Any cage with a shock value of 5 or higher should not be entered by Finkz. Cages with a shock value lower than 5 are safe to enter. In this experiment, the first cage that Finkz enters could have any total. After that, each subsequent cage she enters must have a total exactly one greater than the previous cage she entered. Cages not entered by Finkz can have any total.