The two rainbows puzzle is the 4th cube in the impossible cubes series. This cube has a special feature. It has two solutions…
Small warning… This cube is very difficult. None of my playtesters were able to assemble this cube (in the hard configuration) after disassembling it.
When I design a cube puzzle I let a lot of friends try them out. Most of them manage to disassemble the cube, but almost no one can reassemble it. To solve the problem I gave this cube two solutions. One is very difficult and the other one is relatively easy. This way the cube can be reassembled by someone with not too much puzzle experience. If you are up to the challenge however you can try to solve the difficult configuration.
The cube has markings on the side to show if the cube is assembled in the hard or easy way.
The easy configuration takes 14 steps to disassemble (18.104.22.168.2)
The hard configuration takes 26 steps to disassemble (22.214.171.124.2)
You will get the .stl files to 3D print this cube yourself. This cube can be printed without any support material. There are three different tolerances to print the cube: 0.25mm, 0.15mm and 0.05mm. There is also a burrtools file which you can use to make your own tolerances. If you print this cube it will be extra challenging because you start with the disassembled parts.