ARM engineer David Gilday has designed a robot capable of solving a 4x4 Rubik's Cube in just 50 moves. The 'bot - powered by a Huawei Ascend P6 handset - is dubbed Multicuber 3.
"[It] combines Lego Mindstorms, algorithms and "because it's there" style optimism in equal measures," Engadget explained. "A custom app snaps the unsolved cube from all sides, to understand the starting point, then figures out the quickest path to color-coded harmony."
According to Gilday, the majority of human cubers would take approximately 120 moves to solve the 4x4 puzzle, while Multicuber 3 can finish in just 50.