Calling the Twenty: Puzzle X3

CTT-X3 Puzzle

You are the Forehand in the Call. Your hand: XX, XIX, XV, XI, VIII, V, Kclubs, Chearts, Jdiamonds, 1hearts.

Which Tarok do you call, and what does your call tell the other players?

Reveal answer

Answer

The XVIII. You hold both the XX and the XIX, so you call the highest Tarok below them that you lack, the XVIII. When you call a Tarok below the XX, the other players know that you hold the XX and every Tarok between it and the card you called.