A German skydiver solved a Rubik's Cube mid-air while sitting in a free-falling rubber dinghy as it plunged to earth.
Ludwig Fichte jumped off from a height of 14,000 feet.
The 29-year-old was filmed completing the puzzle in 31.5 seconds. Thereafter, he deployed his parachute.
The Sun quoted Ludwig, of Dresden, Germany, as saying: "Solving the cube in freefall has been done before - but I'm the first to do it in a rubber boat."
He now aims to solve Rubik's Cubes before opening his parachute.