Sovereign Chess Sovereign Chess Sovereign Chess is a commercial chess variant designed by Mark Bates and produced by Infinite Pi Games. The game is played on a 16 x 16 board and begins with 112 pieces—a normal complement of white and black pieces (16 each), and 80 other colored pieces (8 each of 10 different colors). The colored pieces are considered “neutral” at the beginning of the game, and can not initially be moved nor captured. The center of the board contains an arrangement of 24 colored squares (2 each in every color, including white and black), which determine control of the
Chess boxing an alternative to traditional roles. A chessboxing fight consists of 11 rounds, 6 rounds of chess and 5 rounds of boxing, and a victory in either chess or boxing wins and ends the entire contest. Chess and boxing rounds alternate, a full-distance contest begins and ends with a round of chess. Each round lasts three minutes, regardless of whether it involves chess or boxing. A single chess game is played over the six chess rounds. These total 18 minutes; each player is subject to a time control of 9 minutes with no increment to make all their moves (blitz chess).