('Checkered1', 'Shared pieces (v1)'),
('Checkered2', 'Shared pieces (v2)'),
('Checkless', 'No-check mode'),
('Chess960', 'Standard rules'),
('Circular', 'Run forward'),
('Checkered1', 'Shared pieces (v1)'),
('Checkered2', 'Shared pieces (v2)'),
('Checkless', 'No-check mode'),
('Chess960', 'Standard rules'),
('Circular', 'Run forward'),