We start in a ring. There are screaming fans. The first round is 4 minutes of chess, followed by 3 minutes of boxing, then chess, then boxing, for 11 rounds. You win by knocking out your opponent or checkmating him, either way.
As Krulwich writes, Chess Boxing has apparently been practiced for close to a decade, in a growing number of venues around the world (after starting in Amsterdam). That I had never heard of it before today reminds me that the world of games will always be far larger — and weirder — than I’ll ever completely grasp, bless it.
(And, given the subject matter behind of our banner artwork, perhaps I ought to declare Chess Boxing the official sport of The Gameshelf…)