Four cards are dealt face down to each player. Each player flips face up any two cards of their choice, followed by a betting round opened by the player with the best hand showing. Regular seven card stud ensues, with two more cards dealt face up and the final card dealt face down. Best hand wins.
The purpose of players choosing which cards to show the table is strategic. Players with bad hands can show the table their best cards to try to intimidate. Or for the opposite effect, players with good hands can show only their weak and mismatched cards to the rest of the table to give the impression of a weaker hand. This also gives a player the advantage of trying to gain the opening of a betting round, by showing high cards.