Oh, well, after TealKnight demoted it, I promoted it back to Professor. I was more off, before, but now I'm 2 off. I hope to be able to find the 2 steps (for 74), occasionally. Already giving 5 stars, cause I think it's a very good puzzle!
EDIT (a few hours later) I found the 2 steeeeeps! :D :D :D :))) GREAT level, indeed! (and currently demoted to PhD, again, LOL).
WOW! That was veeery hard for me. Even my method to mess up with blocks in an attempt to create new perspectives didn't work.
Today, I was lucky: I did an error that brought a completely new blocks arrangement, ino a different section of the board I hadn't used before. Surprisingly, I wasn't blocked and found a way out. Hmmm... Could it be optimized? I tried it and won...
Honestly, this is scarry. Without this "error", I would have - most probably - never found out the way to go, because all the routes I tried were off that part of the board as I thought it would be a dead end... Crazy...
( a momth ago) Like Tilu, I'm stuck 2 off, too. For a looong time. Giving stars, now and hoping I'll find the cut! :)
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EDIT 2023, 17th April - I can't believe I finally solved this. 72 is extremely tricky, IMO.
I was baffled at first. How can anything be faster than 80? But then after several minutes of seeing how this puzzle actually works, I got it! Wonderful solution and design!
Insights