RAT RUN 11: Limited Addition

Normal sudoku rules apply.

AIM OF EXPERIMENT: 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.

TELEPORTS: Entering a teleport will cause Finkz to be instantly transported to the matching coloured teleport. From there she can continue her journey. Matching teleports always have identical digits, but teleports that don't match always have different digits.

REDCURRANTS: A redcurrant always sits between an even digit and an odd digit.

TEST CONSTRAINT: In this experiment, any cell on the path equals the digit at the top of its column plus the digit at the left-hand end of its row.