IQ'biki

It is really a very difficult brainteaser.

IQ'biki is the spatial puzzle, which contains ALL (more than a thousand ) possible variants of the known "problem with four colored cubes", including Instant Insanity, which is one of the four major puzzle crazes along with Fifteen, Tangram and the Rubik's Cube.
8 different levels. With or without timer. You can easy exchange the results with your friends.
If the puzzle is driving you crazy, use the auto-assembly! And start again! Start brainstorming! You never really know whether you can solve it or not until you try! Frankly, only one in a thousand can solve the eighth level... This puzzle challenges your brain!