Rollerball (chess variant)

Rollerball is a chess variant invented by Jean-Louis Cazaux in 1998.^[1] The game was inspired by the 1975 science-fiction movie Rollerball, specifically the futuristic and violent sport (similar to Roller Derby) portrayed in the film.

The board comprises 7×7 squares with the central 3×3 section missing. Pieces generally move clockwise around the board. Each player starts with one king, one bishop, two rooks, and two pawns. Both bishops are light-squared on the initial setup. Dark-squared bishops can only be obtained by pawn promotion.