Chesseboxing.

"Brain and muscle".
Chessboxing is the strangest sport around the world. Is a sprt that combines boxing and chess. It isn't a joke chessbxing exist and every day is getting more popular.
The concept of this sport was proposed in 1992 by cartoonist Enki Bilal but was Iepe Rubingh who brought the concept into practice in the spring of 2003 organized actual matches.
It is a match with two opponents. It consists of eleven alternating rounds of boxing and chess sessions. Starting with a four minutes chess round, folowed by three minutes of boxing and so one. Between rounds there is a pause of one minute.
The form of chess is speed chess and one competitor has a total of tweleve minutes for the game.
The competitors win by know out, checkmate, a decision of jury or if tweleve minutes of chess of time of opponent elapses.
If a contestant doesn't do movement in the chessround is punished by the reference and next 10 seconds does a movement.
To succed in the game you need to be skilled chess player and skilled boxers but isn't a requirement.