('Bishopawns', 'Bishop versus pawns'),
('Brotherhood', 'Friendly pieces'),
('Cannibal', 'Capture powers'),
+ ('Capablanca', 'Capablanca Chess'),
('Capture', 'Mandatory captures'),
('Castle', 'Win by castling long'),
('Checkered1', 'Shared pieces (v1)'),
('Interweave', 'Interweaved colorbound teams'),
('Isardam', 'No paralyzed pieces'),
('Janggi', 'Korean Chess'),
+ ('Joker', 'Replace pieces'),
('Kinglet', 'Protect your pawns'),
('Kingsmaker', 'Promote into kings'),
('Knightmate', 'Mate the knight'),
('Minixiangqi', 'Xiangqi 7 x 7'),
('Monochrome', 'All of the same color'),
('Monster', 'White move twice'),
+ ('Musketeer', 'New fairy pieces'),
('Omega', 'A wizard in the corner'),
('Orda', 'Mongolian Horde (v1)'),
('Ordamirror', 'Mongolian Horde (v2)'),
('Shatranj', 'Ancient rules'),
('Shogi', 'Japanese Chess'),
('Sittuyin', 'Burmese Chess'),
+ ('Spartan', 'Spartan versus Persians'),
('Squatter', 'Squat last rank'),
('Suicide', 'Lose all pieces'),
('Suction', 'Attract opposite king'),