Media playback is unsupported on your device

Iconic Rubik's Cube celebrates 40th birthday

24 April 2014 Last updated at 05:52 BST

It is one of the best-selling puzzles of all time - and now the Rubik's Cube is celebrating its 40th birthday.

A new exhibition showcasing the four decades of its history is opening in New Jersey.

Tim Allman reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.