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Rummy Joker Rules\n\n Jokers, both wild and printed, are only used to make impure sequences and sets. A wild joker can be used to make a pure sequence only if it is of the same suit and consecutive rank. A joker card can replace only one card in a sequence or set.

A Joker can be used to replace any of the four cards needed to make up a complete Four of a Kind. If a player has a Three of a Kind hand, it is automatically upgraded to a Four of a Kind with a Joker's help (and not to a Full House). A Full House is a hand of three cards identical in rank + a One Pair.