With Fusion 360, I designed each piece of the enigma puzzle. Then, I chose 3 pieces. The basic measurement of the blocks are 80mmx20mmx20mm.

With the laser cutter, I designed the rest 3 pieces in Inkscape. Since the wood is only 4mm thick, i had to design the surface for each 4mm. After cutting it with the laser cutter, I glued it all together.