Chratze (German pronunciation: [xratsə]; "raking") is a trick taking card game, mainly played in the German-speaking part of Switzerland as well as in Bavaria (there known as Zwicken and played with 3 cards). It is one of over 70 variants of Jass and played with a pack of 36 cards, either a Swiss-German or French one. It appears to be related to the Austrian game, Kratzen.

Theoretically it can be played by 2-7 people, however it is most common and enjoyable are 4-5 players.

Four cards are dealt, therefore there are 4 tricks to be taken.

Chratze is played with a pack of four suits, each of 9 cards however, unlike other Jass games, the cards have no point value and only the trick itself counts. Each player receive 4 cards and there is an auction during which players may bid to be the declarer (the Chratzer), to stay in or to drop out of the current game. After the auction, active players may improve their hand by exchanging.

Deal, auction and play are anticlockwise.

Before dealing starts every player antes the basic stake, usually 20 cents, to the middle of the table.

The first dealer is chosen by prior agreement; thereafter the deal rotates to the right. The dealer shuffles the pack, gives it to the player on the left to be cut and then deals 4 cards each in batches of 2, beginning with forehand to the right. After dealing the first batch, the dealer turns the next card and places it in the middle face up to determine the trump suit. The dealer then deals the second batch.

There are three possible bids: