playmode VARCHAR NOT NULL CHECK (playmode IN ('single','double')),
difficulty VARCHAR NOT NULL CHECK (difficulty IN ('beginner','standard','difficult','expert','challenge')),
feetrating INTEGER NOT NULL CHECK (feetrating >= 0 AND feetrating <= 10),
playmode VARCHAR NOT NULL CHECK (playmode IN ('single','double')),
difficulty VARCHAR NOT NULL CHECK (difficulty IN ('beginner','standard','difficult','expert','challenge')),
feetrating INTEGER NOT NULL CHECK (feetrating >= 0 AND feetrating <= 10),