The human being behind the scene

Hi, I'm theWildOne. L'E. Sauvage in my native language.
I'm a French software engineer.
I became fascinated by an apparently impossible puzzle:
Can the same set of pieces assemble into two different pictures?
After months of research,
dozens of burnt plywood boards,
countless failed attempts,
and a custom-built generator...
...the answer turned out to be yes.