The problem here is that this puzzle was developed in collaboration with a mathematician. The number of models for piece sides was calculated in advance to be at a minimum, but still for only ONE SOLUTION to exist.

Then came genetic algorithms, since it was my PhD thesis topic at the time.
After a few months, full of experiments and Terminal colored grid display of solutions advancing in real-time, I decided to shift+delete the entire project.

This was the only time in mi life where I intendedly deleted a project I worked on, so to never touch it again or try to reconstruct it. I had in there even PNG files with the pieces, to display the solutions as if I owned the physical puzzle. It was becoming an addiction.

These guys are your competition, not me.

Solving problems requires down to Earth solutions.
Down to Earth solutions require computations.
Computations require electricity, not zero-point free energy.
Electricity costs money.

I'm seeking knowledge.

No, you are not free to comment on any topic you want here. There's also the forum rules.