His cube was one of the most popular and infuriating toys of all time. Now Professor Ernö Rubik is hoping that the sphere will bring sleepless nights to the world's obsessive puzzlers.
The creator of Rubik's Cube is back with his first new puzzle for almost 20 years and early indications are that it is going to be every bit as irritating as the original.
Rubik's 360, which goes on sale next week, features six small balls inside three interlocking spheres. The task is to lock each ball into colour-coded capsules on the outermost sphere. Professor Rubik said of his cube that it was "easy to understand the task, but hard to work out the solution". It is just as aggravating to crack the 360.
In The Times newsroom yesterday, the angry rattles of plastic pellets signified dozens of journalists failing to coax so much as one ball from the centre of the sphere.