The Charleston is American Mahjong's signature move — a structured tile-passing ritual before play begins, named for the 1920s dance craze that was sweeping America when the game arrived. It's also the moment that decides most hands. Here are the exact rules, then the strategy.
The pass order
First Charleston (mandatory): pass three tiles to your RIGHT, then three ACROSS, then three to your LEFT.
Second Charleston (optional): if — and only if — all four players agree, pass three LEFT, three ACROSS, three RIGHT. One refusal cancels it for everyone.
Courtesy pass (optional): you and the player opposite may exchange 0 to 3 tiles. Each of you names a number; you exchange the smaller of the two.
The blind pass
On the last pass of each Charleston (the first one's left pass, the second one's right pass), you may pass 'blind': take one, two, or three of the tiles being passed to you — without looking — and send them along as part of your own three.
It exists for the player whose rack has nothing safe to give up. The cost: you've forwarded mystery tiles that might have been exactly what you needed.
The unbreakable rules
Exactly three tiles, every pass — no more, no fewer. Never pass a joker, in any Charleston or courtesy, ever. And once you've passed, no take-backs: the tiles are gone.
Flowers, winds, dragons, and any suit tile pass freely. The joker rule is the one that gets new players the table's raised eyebrow.
Charleston strategy in four sentences
Read your deal first: find your pairs (never break them — jokers can't make pairs) and your two strongest directions. Pass tiles that serve neither direction, starting with isolated honors and stray numbers. Watch what arrives: a stream of even tiles means your neighbors don't want evens — which means the evens field is open for you. Re-read your hand from scratch after every pass, because hands drift, and the players who notice the drift are the ones declaring mah jongg an hour later.
Reading about passing is one thing; doing it under table pressure is another. Our Charleston simulator deals you a real hand and grades every pass against a coach — the fastest way to make this automatic.