Rubik: It was 1974, in Hungary, behind the Iron Curtain. Narrator: And he created the cube as a way to illustrate spatial relationships in 3D to his students. Rubik: Wake up their creativity ...

Rubik introduced the cube during the dark days of Communism in Eastern Europe, and although the addictive puzzle was a hit in Hungary, it was hard to gain wider exposure from behind the Iron Curtain.