Kontra (cards)
Kontra or Contra is a term used in certain card games of Central European origin that is called by players to raise the stakes. It is the equivalent of "double" in other games. The term comes from the Latin word, contra, which means "against". In German there is also a verb, kontrieren, which means "to double" or "to announce 'Kontra'".
Use in card games
Tarock
If a player is given the right to bid in Tarock games, an opponent may announce Kontra if he thinks the soloist is unlikely to win. This doubles the value of the game.If the soloist believes that he can still win the game, he may reply with Rekontra, which doubles the game value again.
In Tarock, a further doubling is allowed by saying Subkontra or, occasionally Hirsch, a joking reference to the German word, Re, which means "doe", and results in the original game value increasing by a factor of 8.
Skat
Announcing Kontra in Skat and Rekontra is very common, but is not part of the official rules. Players often say Supra instead of Subkontra.In many game rounds the stakes may be doubled again and the game value upped sixteenfold, but this is rather rare in practice. These announcements vary widely, for example, in some circles the announcement Hirsch follows Bock which is used to mean "Supra".
Doppelkopf
In Doppelkopf the side that has the Queen of Clubs announces a "double" with Re, while their opponents say Kontra. This makes it clear which side is bidding.Schafkopf
In Schafkopf, regional terms such as Spritz or Stoß are used to double the game as well as Contra. In response, the declarer or declaring team may says Re or Zurück to redouble. Further doubling of the stakes may be announced as follows:Supra, Sup, nochmal drauf Resupra, Resup, nochmal zurück Bock HirschDoubling is known as spritzen and redoubling as zurückspritzen.