The Probert Encyclopaedia of Recreation

JASS

Jass is a collection of Swiss card games. Many of the most popular card games in Switzerland, especially in the German speaking cantons, belong to the Jass group, and are played with characteristic Swiss cards, which have come to be known as Jass cards. All Jass games are played counter- clockwise. The cards are played in tricks. As usual each trick is won by the highest trump in it, or if no trump is played, by the highest card of the suit led. The winner of each trick leads to the next. In many games the player to the right of the dealer leads to the first trick, but in some games with bidding the declarer leads first.
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