You can see the option "Cards down" only when it's your turn and you have the strongest cards . When you have the opportunity to use it, you will see a "Cards Down" button next to your avatar. You can choose whether to use it or not.

Important!
- If the game has a valid belot, it always applies when using the option "Cards down".
- If the trump colour is diamonds, you take the cards down and your opponent has Q and K of spades, then this is not a valid belot and does not count.
- If you play an all trumps game and you have three clubs and your opponent has belot of spades and take down the cards - his belot counts.