Chess boxing is a hybrid sport that combines the strategic game of chess with the physical challenge of boxing. Competitors alternate between rounds of chess and boxing, typically starting with a round of chess followed by a round of boxing. The match continues until one competitor wins by checkmate in chess or by knockout in boxing. The sport was invented in 2003 by Dutch artist Iepe Rubingh and has gained popularity in various countries. Matches are usually held in a ring, and participants must be skilled in both disciplines to succeed. Chess boxing emphasizes mental and physical endurance, making it a unique and challenging competition.