Rubik's Cube record-breaking teenager says he still wants to solve the puzzle faster.
14-year-old Lucas Etter broke his friend's record by solving a Rubik's Cube in 4.9 seconds at the River Hill Fall 2015 competition in Maryland, USA.
The world record time is being verified by the World Cube Association
BBC Radio 5 live - In Short, Record-breaking teenager's tips on solving Rubik's Cube
14-year-old Lucas Etter broke his friend's record by solving a Rubik's Cube in 4.9 seconds at the River Hill Fall 2015 competition in Maryland, USA.
The world record time is being verified by the World Cube Association
BBC Radio 5 live - In Short, Record-breaking teenager's tips on solving Rubik's Cube