Instant Insanity

We have a set of four very innocent-looking cubes - each face coloured red, blue, green or white - and they have to be arranged in a row so that all of the four colours appear on each of the four long sides of the resulting cuboid.

Cubic Net

This is an interactive net of a Rubik's cube. Twists of the 3D cube become mixes of the squares on the 2D net. Have a play and see how many scrambles you can undo!

Air Nets

Can you visualise whether these nets fold up into 3D shapes? Watch the videos each time to see if you were correct.

Solving the Net

Stage: 5 Challenge Level:

Although many people can solve a Rubik's cube from a given position, the problem of the Rubik's cube has not yet been fully understood by mathematicians due to its enormous complexity.

Mathematicians are still actively working on the main problem which is: what is the smallest number of moves with which you can guarantee to solve any Rubik's cube configuration?

It has very recently been shown that 26 moves is sufficient to solve any Rubik's cube configuration (see here for a news report on this achievement)

There are many web sites devoted to the Rubik's cube problem. The official site solution page is a good place for the interested to find more information.