The game of
# Set

all the same | number | OR | all different | numbers | AND |

all the same | fill | OR | all different | fills | AND |

all the same | color | OR | all different | colors | AND |

all the same | shape | OR | all different | shapes |

different numbers, same fill, same color, same shape

different numbers, different fills, same color, same shape

same number, different fills, different colors, different shapes

different numbers, different fills, different colors, different shapes

number | one | two | three |

fill | hollow | striped | solid |

color | red | green | blue |

shape | rectangle | oval | diamond |

If you pick 2 cards from the deck, there is only 1 card that forms a set with them.

If 21 or more cards from the deck are laid out, there has to be a set.