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How to Do a Joker Exchange
One of the most misunderstood moves in American Mahjong. This guide breaks down exactly when you can do a joker exchange, how to do it correctly, and the one etiquette rule that matters every single time.
What is covered in this guide
Rule 1The tile you exchange must match the set exactly
Rule 2You may exchange from any player's exposure
Rule 3Only on your turn — draw, rack, exchange, discard
Rule 4You may exchange before calling Mahjong
Rule 5You cannot call a discard to use for an exchange
EtiquetteAlways ask first — never reach across the table
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How to Do a Joker Exchange — Full Guide
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