('Crazyhouse', 'Captures reborn'),
('Cylinder', 'Neverending rows'),
('Dark', 'In the shadow'),
+ ('Doublearmy', '64 pieces on the board'),
('Eightpieces', 'Each piece is unique'),
('Enpassant', 'Capture en passant'),
('Extinction', 'Capture all of a kind'),
('Shatranj', 'Ancient rules'),
('Suicide', 'Lose all pieces'),
('Suction', 'Attract opposite king'),
+ ('Synchrone', 'Play at the same time'),
('Threechecks', 'Give three checks'),
('Twokings', 'Two kings'),
('Upsidedown', 'Board upside down'),