('Antimatter', 'Dangerous collisions'),
('Arena', 'Middle battle'),
('Atomic', 'Explosive captures'),
+ ('Ball', 'Score a goal'),
('Baroque', 'Exotic captures'),
('Benedict', 'Change colors'),
('Berolina', 'Pawns move diagonally'),
('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'),
('Recycle', 'Reuse pieces'),
('Royalrace', 'Kings cross the 11x11 board'),
('Rugby', 'Transform an essay'),
+ ('Schess', 'Seirawan-Harper Chess'),
('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'),
('Wildebeest', 'Balanced sliders & leapers'),
('Wormhole', 'Squares disappear'),