('Grand', 'Big board'),
('Grasshopper', 'Long jumps over pieces'),
('Horde', 'A pawns cloud'),
+ ('Interweave', 'Interweaved colorbound teams'),
('Knightmate', 'Mate the knight'),
('Knightrelay1', 'Move like a knight (v1)'),
('Knightrelay2', 'Move like a knight (v2)'),
('Shatranj', 'Ancient rules'),
('Suicide', 'Lose all pieces'),
('Suction', 'Attract opposite king'),
+ ('Takenmake', 'Prolongated captures'),
('Tencubed', 'Four new pieces'),
('Threechecks', 'Give three checks'),
('Twokings', 'Two kings'),