Dou landlord single machine by three people to play a deck of CARDS, the landlord for one side, the other two for the other side, the two sides play, the first out of the hands of the CARDS of a victory. The outcome of the game after any one played CARDS, if the landlord first played CARDS the landlord wins, or the other two wins. This game is purely entertainment, the game win or lose with real money has nothing to do.