We have already seen the famous puzzle in version 17 x 17 x 17, but then no one took seriously. But the Rubik's cube configurations 3x3x7 and 3x3x9 are already for some to pass.
Simple Cubic in 3x3x7 IQ Cube!!
“The Cubic is formed and integrated with Thick-and-Thin Layers. The Special Design of the IQ Cube, The New Challenge, The New Playing Method can you still play and tackle in few minutes?”
Cubes for $26.90 USD stand out that are composed of elements not only in different colors, but two sizes. Inexperienced certainly after a few moments they will do with this stew cubes, but CubeStormer certainly would give the advice. Provided that receives the appropriate software.
Maybe you should try out this cube for yourself. Brando site