('Chess960', 'Standard rules', -1, 'Chess960'),
('Circular', 'Run forward', 3, 'Circular Chess'),
('Clorange', 'A Clockwork Orange', 20, 'Clockwork Orange'),
- ('Colorbound', 'The colorbound clobberers', 5, 'Colorbound Clobberers'),
('Convert', 'Convert enemy pieces', 12, 'Convert'),
('Copycat', 'Borrow powers', 30, 'Copycat'),
('Coregal', 'Two royal pieces', 9, 'Coregal'),
('Crazyhouse', 'Captures reborn', 20, 'Crazyhouse'),
('Crossing', 'Cross the river', 27, 'Crossing'),
('Cylinder', 'Neverending rows', 3, 'Cylindrical Chess'),
+ ('Cwda', 'New teams', 5, 'Different armies'),
('Diamond', 'Rotating board', 4, 'Diamond'),
('Discoduel', 'Enter the disco', 0, 'Disco Duel'),
('Dobutsu', 'Let''s catch the Lion!', 0, 'Dobutsu'),