It's hard to imagine too many similarities between the cerebral game of chess and the bone-juddering discipline of boxing and yet there is a new sport that melds the two.

When you think of chess players, you probably think of tangle-haired geniuses, reclusive Russians, and the boys at school who were too delicate to play in the yard.

You probably don't think of bulging biceps, iron jaws and sweat flying. That's why the mere mention of chessboxing causes so many raised eyebrows.

Read more about BBC's chessboxing feature here.