('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'),