('Berolina', 'Pawns move diagonally'),
('Checkered', 'Shared pieces'),
('Chess960', 'Standard rules'),
+ ('Circular', 'Run forward'),
('Crazyhouse', 'Captures reborn'),
+ ('Cylinder', 'Neverending rows'),
('Dark', 'In the shadow'),
('Enpassant', 'Capture en passant'),
('Extinction', 'Capture all of a kind'),