The world's most popular puzzle is celebrating its birthday.
The Rubik's Cube turns 40 tomorrow!
Invented in 1980, it was originally designed as a teaching aid for architectural students.
More than 450M cubes have been sold worldwide.
To celebrate the anniversary, RedBull is sponsoring a Rubik's Cube world cup!
It will be held virtually because of the pandemic.
The lockdown has made the puzzle even more popular with the social media hashtag #CubeAtHome trending.
