Charleston Strategy: What to Pass and What to Keep

Half of every American Mahjong game gets decided before the first tile is drawn from the wall. The Charleston is where you take a random 13-tile starting hand and turn it into something you can actually win with. Newer players treat this phase as housekeeping. Better players treat it as the most consequential phase of the game.

The Mental Model: 2 to 3 Candidate Hands

Before you pass any tiles, look at your starting 13 and identify the 2 to 3 hand patterns on the NMJL card you are closest to. Do not lock into one hand yet. The Charleston will reshape your tiles, and committing too early forces you to break up groups when the deal goes a different direction.

The ROLLOR Mnemonic

ROLLOR is a community-developed checklist that experienced teachers use to walk new players through Charleston decisions:

• Review your hand
• Organize by potential
• Look at your suits
• Look at your honors
• Optimize for top 2 to 3 hands
• Release the tiles that do not fit

What to Keep

• All Jokers (always, never legally passable)
• Any pair you have already formed
• Flowers if your candidate hands use them
• Tiles you have multiples of
• Tiles in the suits your candidate hands need

What to Pass

• Singletons in suits you are not pursuing
• Honor tiles (winds, dragons) that do not fit your plan
• Numbers far from your target range (e.g., even numbers when chasing 13579 hands)
• Duplicates beyond what your hand needs
• Flowers when your candidate hands do not use them

Reading What Comes Back to You

The tiles your neighbors pass tell you what they do not want, which hints at what they do want. If a neighbor passes mostly honor tiles, they are probably chasing a number-suit hand. If they pass numbers, they may be working on a Winds and Dragons hand. Track patterns across the three first-Charleston passes to refine your read. See our reading opponents guide for deeper signal analysis.

Should You Take the Second Charleston?

Take it if your hand still has more than 2 tiles that do not fit any candidate hand, and stop it if you are 1 to 2 tiles away from being committed to a single hand. Any one player can stop the second Charleston, so you cannot always force it. The optional second round helps when you are still figuring out which hand to chase.

The Blind Pass

Use the blind pass on the third (last) pass of either Charleston — the left pass that ends the first Charleston or the right pass that ends the second — when you do not have 3 tiles you want to release. Pass 1 or 2 of your own tiles plus 1 or 2 tiles you just received from your left neighbor (without looking at them). The blind pass is your best protection against having to break up a near-complete hand.

Common Charleston Mistakes

1. Locking into one hand too early
2. Passing tiles you might need (singletons in productive suits)
3. Ignoring what your neighbors pass
4. Breaking up pairs
5. Passing a Joker (rare but costly)

Going deeper

• The Charleston: complete guide: the mechanics of the ritual itself
• Charleston cheat sheet: one-page printable reference
• Reading opponents: deeper analysis of neighbor pass signals
• Strategy guide: hand selection, defensive play, joker management
• Joker rules: why jokers cannot be passed
• Common beginner mistakes: Charleston pitfalls