('Coregal', 'Two royal pieces'),
('Crazyhouse', 'Captures reborn'),
('Cylinder', 'Neverending rows'),
+ ('Diamond', 'Rotating board'),
('Doublearmy', '64 pieces on the board'),
('Doublemove1', 'Double moves (v1)'),
('Doublemove2', 'Double moves (v2)'),
('Extinction', 'Capture all of a kind'),
('Grand', 'Big board'),
('Grasshopper', 'Long jumps over pieces'),
+ ('Hamilton', 'Walk on a graph'),
('Horde', 'A pawns cloud'),
('Interweave', 'Interweaved colorbound teams'),
('Knightmate', 'Mate the knight'),