Russia's Nikolai Sazhin, a 19-year-old student from the Siberian city of Krasnoyarsk, defeated light heavyweight defending champion Frank Stoldt, a 37-year-old policeman from Germany, during a bout in Berlin at the weekend to lift the world chess boxing title.
A typical chess boxing match consists of 11 alternating rounds of four-minutes of 'blitz chess' followed by two-minutes of boxing. Opponents have a one-minute break between the rounds to take off or put on their boxing gloves.
A chess-boxer can earn victory by checkmate, a knockout, points, or if their opponent runs out of his 12 minutes of allocated chess time.
Sazhin lifted the title after getting Stoldt in checkmate in the fifth round.
The event of chess boxing originated several years ago in Germany and the first world championship was held in 2003 in Amsterdam.
The World Chess Boxing Organization's slogan is "Fighting is done in the ring and wars are waged on the board."
