Marjapussi (Bag of Berries) is a traditional Finnish trick taking game. The speciality of Marjapussi is that the trump suit is determined in the middle of the play by declaring a marriage (a king and a queen of a same suit). To win a game, a partnership must get exactly twelve points. A very similar game is played in Sweden under the name Bondtolva, meaning Farmer's Dozen.
Later, Marjapussi evolved into Huutopussi (Shouting Bag), which involves bidding. The exact winning condition was dropped, but the trump determining process remained. Actually, in Huutopussi the trump suit may even change in the middle of the play if players declare further marriages.
The details of rules in both Marjapussi and Huutopussi vary significantly, and the choice of the rulesets presented below is rather arbitrary. See Variants section about how the rules can vary.
Marjapussi is a trick taking game for four players in fixed partnerships. The partners sit opposite to each other. Marjapussi is played...