The holder of this card must play it and becomes the high bidder's partner for the hand. The remaining players play alone. This is a standard game of taking tricks. Players must follow suit if they are able. Trump may be led or played at any time.
High trump wins the trick, or high card in suit if there are no trumps in the trick.
If they fail, the number of tricks bid is subtracted from their scores. Other players receive one point for each trick taken. The first player to reach a predetermined score wins the game. When you are the high bidder, the usual strategy for the first trick is to lead a low trump and call for the highest trump you do not have. This is not required though.