This is my second interlocking puzzle (first one is here: https://www.thingiverse.com/thing:3898384).

There are only three pieces, but it is still quite (very?) complex to solve.

This puzzle was generated by a genetic algorithm which generates interlocking puzzles. It is the most complex one that my algorithm found with 3 pieces. According to BurrTools, it is a 10-4 (you need 10 moves to remove the first piece).

The puzzle is not so easy to print, as it needs support. Still, I printed my version with a Prusa i3, and it works very nicely. I will soon upload a version using puzzlecad (hence no support, but joints).

Enjoy !

David

UPDATE: Following richgain, I put a split version of the puzzle using puzzlecad. PS: A solution can be found below, in the comments.