('Benedict', 'Change colors'),
('Berolina', 'Pawns move diagonally'),
('Checkered', 'Shared pieces'),
- ('Check3', 'Give three checks'),
('Chess960', 'Standard rules'),
('Circular', 'Run forward'),
('Crazyhouse', 'Captures reborn'),
('Recycle', 'Reuse pieces'),
('Shatranj', 'Ancient rules'),
('Suction', 'Attract opposite king'),
+ ('Threechecks', 'Give three checks'),
('Upsidedown', 'Board upside down'),
('Wildebeest', 'Balanced sliders & leapers'),
('Wormhole', 'Squares disappear'),