OMG - this level gave me a trully hard time. Couldn't come closer than 6 off, like forever. Then discovered a two off, but still needed quite a few more tries to solve it. Great level! :)
Challenging pipelining, shortcuts and optimization. Never expected that route before because of my poor implementation... (that finally led to a painful 2-off) Really surprised after playing. I have to say this is one of my favourites.
Good stuff. Only took me 358 tries hahaha.
Edit: This was the hardest one for me. It took me three tries for the 214 one because I had tried the path on this one.