What started out as a joke in an Amsterdam art gallery in 2003 has since flourished into a fully fledged sporting event. A simple concept really: play four minutes of chess followed by two minutes of boxing. The one who reigns victorious does so either by knockout or checkmate. Expect appearances from chessboxing faves like Richard "The Razor" Frazer and Matt "Crazy Arms" Read. And don't forget about the interval cabaret and legendary afterparty DJs. It's a night jam-packed with a punch. General admission. Over 18s only. Afterparty in the bar till 3am. Pro tip: free drinks for anyone sporting chessboxing banners or fancy dress, claim at the box office.