If you are already familiar with the game in four players, here's the bare minimum to know of how to play with three players.

Preparation:

The dealer receives an additional "Farmland" (six cards with red backs, and five cards to the other players).

Equally distribute the cards (10 per player) with the white back, and two cards will remain. The dealer looks at them and decides to whom to give them to.

The dealer can decide to keep one for himself. He cannot give both cards to the same opponent.

In the Well there are 8 cards instead of 6.

Scores:

The first player to collect the well earns twenty points, ten for the second player and the third player does not receive any points.