('Threechecks', 'Give three checks'),
('Twokings', 'Two kings'),
('Upsidedown', 'Board upside down'),
+ ('Vchess', 'Pawns capture backward'),
('Wildebeest', 'Balanced sliders & leapers'),
('Wormhole', 'Squares disappear'),
('Zen', 'Reverse captures');