Mockingbird & Magnolia
Free Guide · Rules & Etiquette
The joker exchange rule most players get wrong.
You have seen it happen. Someone reaches across the table, swaps a tile mid-game, and half the players are not sure if that was legal. The joker exchange is one of the most common moves in American Mahjong and one of the most frequently misunderstood.
Most players learn it secondhand, pick up half the rules, and do not realize there is a gap until they are sitting at a new table and someone says that is not how it works.
This guide covers all five official NMJL rules for the joker exchange, the one that comes up in every single Mahjong 101 class, and the etiquette note that makes the whole table run smoother.
What's inside
- The 5 official NMJL rules for joker exchanges, clearly explained
- Exactly when you can and cannot do an exchange
- The one rule that comes up in every Mahjong 101 class we teach
- The etiquette note that makes the whole table run smoother
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