('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'),