7849 Three Piece Puzzles

The puzzles are derived from a cube made up of 27 sub cubes - see thing:1570354. The openSCAD code contains a table of 7849 three piece puzzles, any of which can be constructed.

Here are 6 sample puzzles. Five of the puzzles can be assembled into a cube. The puzzle in cube_three_5016.stl can only be solved "virtually", a piece has to be broken in order make the cube. The puzzle sets are numbered from 1 to 7849 and the stl file names contain the number of the set that makes the puzzle. Mo