The sport's inventor Dutch artist Iepe Rubingh had the best line: "If you move the pawn, it's like moving your jab. If you come with the knight, it's like a hook. If you come with the rook, it's a straight right. And if you march in with the queen, it's a knockout".
Photo from WCBO site.
Congrats to German police officer Frank 'ANTI TERROR' Stoldt for winning the event! He won via a checkmate in round 7, apparently with "only seconds to go".