A University of Kentucky student from Georgetown is among the fastest Rubik’s Cube solvers in the world, completing the puzzle in under five seconds.

We have featured many Rubik’s Cube machines capable of solving the puzzle in super fast times. But now one Japanese creator has documented his path to creating the world’s very first self-solving ...

If there are nine people in a room and every person shakes hands exactly once with each of the other people, how many handshakes will there be? How can you prove your answer is correct using a model ...