Today's Königrufen has many more contracts than its predecessor, including those that can be played even with a weak hand of cards. Many of these have been imported from other card games during a long process that went on throughout the 20th century. As Königrufen boomed in the period between 1880 and 1920, it evolved into a form with just four possible bids: two with a partner and two solo. In each case the lower (easier) bid enabled the declarer to expose the talon and choose 3 of the cards; the upper (harder) bid was played without looking at the talon.