Speedsolving the Rubik’s Cube while freefalling from 4300 meters, sitting in a rubber boat. This is the first attempt and worked really well – I solved the cube in about 31,5 seconds. I started right after exit and was finished at about 2500 meters. At 2300 meters I accidentally slipped out of the boat.
The skydive was videotaped by five cameras (two on-board, three outside the boat).