Knack is a Swedish card game, mainly played for money, in which the aim is to win at least one of the three tricks.

It is also known as Trekort or Trikort, although that usually refers to a more basic game of Danish origin that is probably its progenitor.

Each deal begins with the dealer anteing an agreed stake into the pot.

Otherwise a side suit card should be led face down and regarded as the lowest trump; it wins if no-one else is able to trump it.

[1] The names Trekort and Trikort are also used for several other similar card games.