My attempt to demonstrate that Eternity 2 didn't have a valid solution. I'll try to do that by using logic, instead of brute force cloud computing.
My point is to get all valid borders, and then begin to discard those that require tiles not in the puzzle. My attempt is to get an amount of borders small enough to be processed.
I'm coding using Qpython3 in android, and rule is : only <20lines snippets are valid.
Armv71 power!
