CBS News sent over the photo to the right promoting a story to air on the “CBS Evening News with Scott Pelley” tonight. What sport is it? Here’s a clue: it combines a physical sport with a mental game.

Yup, it’s “Chess Boxing,” an apparently real thing that involves alternating rounds of chess and boxing. You can win by securing a KO or a checkmate, whichever comes first.

CBS News correspondent Mark Phillips will report the story for program this evening.