('Berolina', 'Pawns move diagonally'),
('Bicolour', 'Harassed kings'),
('Bishopawns', 'Bishop versus pawns'),
+ ('Brotherhood', 'Friendly pieces'),
('Cannibal', 'Capture powers'),
('Capture', 'Mandatory captures'),
('Castle', 'Win by castling long'),
('Cylinder', 'Neverending rows'),
('Diamond', 'Rotating board'),
('Discoduel', 'Enter the disco'),
+ ('Dobutsu', 'Let''s catch the Lion!'),
('Doublearmy', '64 pieces on the board'),
('Doublemove1', 'Double moves (v1)'),
('Doublemove2', 'Double moves (v2)'),
('Madhouse', 'Rearrange enemy pieces'),
('Madrasi', 'Paralyzed pieces'),
('Magnetic', 'Laws of attraction'),
+ ('Maharajah', 'Augmented Queens'),
('Makpong', 'Thai Chess (v2)'),
('Makruk', 'Thai Chess (v1)'),
('Maxima', 'Occupy the enemy palace'),