Am now entirely stuck on level 28! I've even had Mr trampledamage have a look at it and he's good at left and right and spatial stuff which I'm really bad at it, and he says it's impossible to get out of that maze without turning left. So presumably I'm misunderstanding the instructions. I've had a look at the hints forum and all they say is work out the shortest route.

Help? *beseeching look* Please? I'll make you cookies...