I think I must have tried this level before and failed to hit the exit, however today I got the gist of getting there and succeeded in doing the 27, nice level but today it doesn't seem too tricky hence 4 stars.
The amount of different 2 off is incredible for such a small level. I had fun solving it, but was not able to spot what was the "trick" that suddenly saved me the last 2 steps... grmpffff