RAT RUN 6: Equilibrium

Normal sudoku rules apply: place the digits 1-9 in each row, column, and 3x3 box (marked with dotted lines.

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 yellow teleport will cause Finkz to be instantly transported to the other teleport. From there she can continue her journey. The teleports contain the same digit.

ONE-WAY DOORS: Finkz may only pass directly through a purple arrow if moving in the direction the arrow is pointing. An arrow always points to the smaller of the two values it sits between.

BLACKCURRANTS: Cells connected by a blackcurrant are in a 1:2 ratio (one is double the other.) Not all possible blackcurrants have been given.

TEST CONSTRAINT: In this experiment, the sum of the digits on the path before teleporting must equal the sum of the digits on the path after teleporting.