Competitions held in school gymnasiums are usually loud. But this one was different: All that was heard amid the silence was ...

The Rubik's Cube is a three-dimensional puzzle in which each side composed of six different colors is divided into 9 squares of 3x3, and it is so popular that the world championships are held. ' Rubik ...

One of the most mind-boggling toys that many of us have grown up trying to solve is the Rubik’s cube — a simple-looking mechanical puzzle, made from small square pieces called ‘cubies’. It consists of ...