('Antimatter', 'Dangerous collisions'),
('Arena', 'Middle battle'),
('Atomic', 'Explosive captures'),
+ ('Ball', 'Score a goal'),
('Baroque', 'Exotic captures'),
('Benedict', 'Change colors'),
('Berolina', 'Pawns move diagonally'),
+ ('Cannibal', 'Capture powers'),
('Capture', 'Mandatory captures'),
('Checkered', 'Shared pieces'),
('Chess960', 'Standard rules'),
('Circular', 'Run forward'),
+ ('Coregal', 'Two royal pieces'),
('Crazyhouse', 'Captures reborn'),
('Cylinder', 'Neverending rows'),
('Dark', 'In the shadow'),
('Losers', 'Get strong at self-mate'),
('Magnetic', 'Laws of attraction'),
('Marseille', 'Move twice'),
+ ('Perfect', 'Powerful pieces'),
('Racingkings', 'Kings cross the 8x8 board'),
('Rifle', 'Shoot pieces'),
- ('Royalrace', 'Kings cross the 11x11 board'),
('Recycle', 'Reuse pieces'),
+ ('Royalrace', 'Kings cross the 11x11 board'),
+ ('Rugby', 'Transform an essay'),
('Shatranj', 'Ancient rules'),
('Suicide', 'Lose all pieces'),
('Suction', 'Attract opposite king'),
('Threechecks', 'Give three checks'),
+ ('Twokings', 'Two kings'),
('Upsidedown', 'Board upside down'),
('Wildebeest', 'Balanced sliders & leapers'),
('Wormhole', 'Squares disappear'),