If, during the auction, a "Rufer" contract is called, which is one of the "positive contracts", has won the auction, the successful declarer announces a King of his choice. The player who has the King of the chosen suit in his hand becomes the player's partner, the other two players play as the opposing team or "defenders". If the player has three Kings, he can call "the fourth" without naming its suit. If the player has all the Kings, some rules allow him to 'call a Queen' (Vienna Cup, Styrian Cup), while others forbid a "Rufer" to be played in such circumstances (Raiffeisen Cup, Hausruck Cup).