Was trying too hard on a path that just didn't work. Clever indeed. Definitely not a '1st try' here. Underling confused me heh. Took less than a min here rofl.. that kind of trick is overused on easier levels sadly. Still nice. Kept doing the same mistake over and over.. rofl.. I had trouble to figure out how i saved 2 moves by doing this but whatever.. very tricky considering how low are the possibilities. Nice simple level there for introducing locks and optimizing. Lots of moves to place everything correctly. Still nice one. 
Insights