The Professor Cube «ILLusion» is made up of black and white cube parts, showing a checkerboard pattern on each face. The cube may look effortless to solve, but if you look again, you may notice that one checkerboard out of six is inverted.
Thanks to the inverted checkerboard pattern, it is actually possible to undo all six checkerboard patterns and build a cube with up to 3 white and 3 black faces with white corners.
Tip: Because there is a single inverted checkerboard face, the cube can be solved more easily if this face is done first, just after mixing it up.
This 5x5x5 cube version is based on the V-Cube 7 «ILLusion» invented by Verdes Innovations S.A..