Rubot II holds the lauded distinction of being the world's fastest Rubik's Cube solving robot. Irish inventor Pete Redmond managed to integrate color-sensing features with Kociemba’s simplified two-phase algorithm, which Rubot exploits to devise a solution in less than 20 moves. Using its pneumatic arms, the second-gen robot holds a record time of solving a Rubik’s Cube in 21 seconds. Now before you start thinking Skynet, know that a human holds the world record for solving the puzzle box in the fastest time. The mortal: Feliks Zemdegs. The time: 5.66 seconds. Humans: 1, Robots: 0.