Five cards against the dealer, who needs a hand to qualify.
Five-card stud against the house, with no drawing and no bluffing — the whole game is one decision.
Place an ante. Everyone gets five cards face down, and the dealer gets five with one turned face up.
Look at your hand. Either fold and lose the ante, or raise with a bet of exactly twice the ante.
The dealer needs ace-king or better. If they do not, the ante pays even money and your raise is simply returned — so a strong hand can win far less than it deserves. If they do qualify and you win, the ante pays even money and the raise pays on a scale: even money for a pair, and rising through two pair, trips, straight, flush, full house and four of a kind up to a large multiple for a royal flush.
Most tables offer a separate side bet paying for a flush or better regardless of the dealer's hand.
Strategy in one line: raise with any pair or better, raise with ace-king when the dealer's up card is one you also hold, and fold everything less than ace-king.