Seven players. P3 is the Dapper; you are P4, you called "Challenge!" and P3 kept the Dapp. Trick 1: P3 led the XX.
P2Team
P3Dapper
P5Team
P6Team
P1Team
P7Team
P3Your hand
Which Tarok makes sure the team wins this trick?
Answer
The Skus. You must follow the Tarok lead, and only the Skus and the XXI beat the XX. The Dapper has played, so the Skus wins the trick for the team. With the XV or the IX the trick is the team’s only if a teammate after you holds the XXI, and the Dapper may still have it in his hand.
Rule: You must follow suit. If Hearts are led and you hold a Hearts card, you must play one; if a Tarok is led and you hold one, you must play a Tarok.