('Coregal', 'Two royal pieces'),
('Crazyhouse', 'Captures reborn'),
('Cylinder', 'Neverending rows'),
+ ('Diamond', 'Rotating board'),
('Doublearmy', '64 pieces on the board'),
('Doublemove1', 'Double moves (v1)'),
('Doublemove2', 'Double moves (v2)'),
('Extinction', 'Capture all of a kind'),
('Grand', 'Big board'),
('Grasshopper', 'Long jumps over pieces'),
+ ('Hamilton', 'Walk on a graph'),
('Horde', 'A pawns cloud'),
('Interweave', 'Interweaved colorbound teams'),
('Knightmate', 'Mate the knight'),
('Knightrelay1', 'Move like a knight (v1)'),
('Knightrelay2', 'Move like a knight (v2)'),
+ ('Koth', 'King of the Hill'),
('Losers', 'Get strong at self-mate'),
('Magnetic', 'Laws of attraction'),
('Makruk', 'Thai Chess'),
('Maxima', 'Occupy the enemy palace'),
+ ('Minishogi', 'Shogi 5 x 5'),
('Monochrome', 'All of the same color'),
('Monster', 'White move twice'),
('Omega', 'A wizard in the corner'),