Mexican Poker

Five-card stud is the earliest form of the card game stud poker, originating during the American Civil War, but is less commonly played today than many other more popular poker games. It is still a popular game in parts of the world, especially in Finland where a specific variant of five-card stud called Sökö (also known as Canadian stud or Scandinavian stud) is played. The word sökö is also used for checking in Finland ("I check" = "minä sökötän").

The description below assumes that one is familiar with the general game play of poker, and with hand values (both high and low variations). The description also makes no assumptions about what betting structure is used. Five-card stud is sometimes played no limit and pot limit, though fixed limit and spread limit games are common (with higher limits in the later betting rounds). It is typical to use a small ante and a bring-in.

Play begins with each player being dealt one card face down, followed by one card face up (beginning, as usual, with the player to the dealer's left). If played with a bring-in, the player with the lowest-ranking upcard must pay the bring in, and betting proceeds after that. If two players have equally ranked low cards, suit rankings may be used to break the tie. If there is no bring-in, then the first betting round begins with the player showing the highest-ranking upcard, who may check. In this case, suit should not be used to break ties; if two players have the same high upcard, the one first in clockwise rotation from the dealer acts first.

After the first betting round is complete, another face-up card is dealt to each player (after a burn card, starting with the player to the dealer's left, as with all subsequent rounds). Betting now begins with the player whose upcards make the best poker hand (since fewer than five cards are face up, this means no straights, flushes, or full houses). On this and subsequent betting rounds, the player to act first may check or bet up to the game's limit. The second betting round is followed by a third upcard to each player and a third betting round, again starting with the player with the best poker hand showing (thus, the first player to act on each round may change). A fourth face-up card and fourth betting round is followed by a showdown, if necessary (it usually won't be – most deals of five-card stud end early when a player bets and gets no calls).

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Wikipedia