American Mahjong Rules FAQ: 25 Beginner Questions Answered
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American Mahjong becomes much easier when you separate annual-card requirements from play procedures. The card tells you which hands are legal in that year; published rules tell you how to deal, pass, draw, call, expose, exchange Jokers, and score.
Quick answer
NMJL-style American Mahjong is usually played by four people with 152 tiles and the current annual card. East starts with 14 tiles; others start with 13. After the Charleston, players draw and discard until someone completes a listed hand. Jokers help only in eligible groups, and tournament or house procedures may differ.
Rules basis for these answers
These answers address common National Mah Jongg League-style American Mah Jongg for four players using the 2026 card. The annual card changes every year and is not reproduced here. Every player should have the current card.
Some questions—especially Charleston stopping, call timing, exposure correction, dead hands, three-player adaptations, and scoring penalties—depend on the governing rules. Where procedures vary, this FAQ says so rather than presenting a house convention as universal.
Setup and tile questions
1. How many people play American Mahjong?
Standard American Mah Jongg is designed for four players. Three-player versions exist, but they change setup, passing, or turn procedures. Choose one published three-player variant before play instead of leaving an empty fourth position and improvising.
2. How many tiles are in an American Mahjong set?
A common modern American set has 152 playing tiles: 108 numbered suit tiles, 16 Winds, 12 Dragons, 8 Flowers, and 8 Jokers. Some cases include extra blank replacement tiles; keep those outside the wall unless they have been deliberately marked to replace a missing tile.
3. What are Craks, Bams, and Dots?
They are the three numbered suits. Each runs from 1 through 9, with four copies of every rank. Craks show character symbols, Bams usually show bamboo-like sticks, and Dots show circles. One Bam is the exception: it commonly displays a bird.
4. What is Soap in American Mahjong?
Soap is the common American name for White Dragon. Its face may be plain, framed, or labeled. On the annual card, that physical tile can serve as White Dragon or represent zero, depending on the exact line and note.
5. How many tiles does each player start with?
East begins with 14 tiles, and the other three players begin with 13. After the Charleston and courtesy pass, East makes the opening discard. Thereafter, a normal player draws to 14 and discards back to 13.
6. How do you build an American Mahjong wall?
Each player builds 19 stacks of two face-down tiles, making a 38-tile wall. Four walls account for all 152 playing tiles and form a square. If a wall is short or long, stop and recount before dealing.
Annual card and hand questions
7. Why does American Mahjong need an annual card?
The card defines the legal hands for that year, along with values, group spacing, suit relationships, exposure status, and notes. Patterns change annually, so an old card cannot be used to validate a current-year game. The card is a required playing reference, not a disposable score sheet.
8. Do the card’s printed colors mean Craks, Bams, and Dots?
No. Colors show same-suit and different-suit relationships. You choose which physical suit corresponds to each printed color, then remain consistent. A red printed group does not inherently mean Craks, and green does not inherently mean Bams.
9. What do spaces on the card mean?
Spaces separate distinct groupings. This matters for calls and Jokers. A run of adjacent numbers may represent separate singles rather than one combined group. Read spacing together with the line’s note and exposed-or-concealed designation.
10. How do I know whether a hand is exposed or concealed?
Check the designation printed with that exact card line. An exposed hand may call discards for legal partial groups. A concealed hand stays hidden until Mah Jongg and generally cannot call before then except for the winning tile, subject to any special rule.
Charleston questions
11. What is the Charleston?
The Charleston is a structured tile exchange after the deal and before normal play. The common first sequence is three tiles right, three across, and three left. A reverse sequence commonly follows left, across, and right, with exact continuation or stopping procedure set by current rules.
12. Can I pass a Joker in the Charleston?
No. Jokers cannot be passed during any Charleston exchange or the courtesy pass. Check outgoing tiles before turning them face down. If a Joker is passed accidentally, pause and apply the table or tournament correction procedure.
13. What is a courtesy pass?
After the main Charleston, opposite players may agree to exchange a smaller number of tiles, commonly zero through three. Both pass the same agreed number face down and simultaneously. A courtesy pass is optional, and Jokers still cannot be included.
14. What is a blind pass?
A blind pass is a limited procedure allowed at specified Charleston points under some rules. A player forwards permitted incoming tile or tiles without looking, protecting useful rack tiles. Eligible timing and quantity vary, so ask for the exact procedure before passing; it never permits passing a Joker.
Turn and call questions
15. Which direction does American Mahjong play move?
After East’s opening discard, normal play moves counterclockwise. A legal call can skip players because play resumes from the caller. Watch every discard, even when the discarder is not seated immediately before you.
16. What happens on a normal turn?
Wait for the prior call window, draw one tile from the live wall, evaluate your 14 tiles, make any legal Joker exchange, then discard one tile face up and announce it. Pause so other players can call before the next draw begins.
17. When can I call a discarded tile?
During ordinary play, you generally call the most recent discard when it completes a legal exposable group of three or more matching tiles. You cannot call merely because a tile is useful. A discard that completes your entire hand may be called for Mah Jongg.
18. Can I call a discard to make a pair?
Not for an ordinary partial exposure. A pair must normally be completed by drawing its second natural tile. You may call a discarded tile that fills a pair when that tile completes the entire legal Mah Jongg hand.
19. What if two players want the same discard?
Apply claim priority and timing rules. A valid Mah Jongg claim generally outranks an ordinary exposure call. If claims have the same purpose, seat priority and timely completion may matter. Leave the tile in place and consult written tournament rules when applicable.
20. Do I draw after calling a discard?
No. The called discard is the tile acquired for that turn. Display the complete legal grouping on top of your rack, then make one discard so your tile count returns to the proper number.
Joker and exposure questions
21. Where can Jokers be used?
A Joker generally substitutes within a grouping of at least three identical tiles, subject to the card’s notes. It cannot represent a single or pair. A concealed hand may contain Jokers in eligible groups, but those groups stay hidden until Mah Jongg.
22. How do I exchange for an exposed Joker?
Hold the exact natural tile represented by the Joker. During your permitted turn window, place that natural tile into the exposure and take the Joker into your rack. Exact timing, including whether the exchange occurs before or after drawing, follows the governing rules.
23. Can I pick up a discarded Joker?
No. Once a Joker is discarded, it cannot be called as a wild tile or recovered through an exchange. Announce and place it like any other discard, then leave it in the discard area.
Winning and scoring questions
24. How do I know I have Mah Jongg?
Your 14 tiles must exactly match one complete hand on the current card. Verify ranks, suit relationships, group sizes, spacing, natural singles and pairs, Joker positions, exposure status, and every note. Then say “Mah Jongg,” reveal the hand, and identify the line.
25. How is American Mahjong scored?
Start with the value printed beside the winning card line. Then apply the payment or point rules agreed before play, which may distinguish self-pick, a discard win, Joker-free completion, or penalties. Social tables and tournaments can use different multipliers and recordkeeping systems.
Fast beginner reference table
| Situation | Basic answer | Check for variation? |
|---|---|---|
| Starting count | East 14; others 13 | Deal method may vary |
| Charleston Joker | Never pass | Correction procedure varies |
| Ordinary pair call | Not allowed | Winning call is different |
| Concealed-hand exposure | Not before Mah Jongg | Hand-specific rules control |
| Joker in a pair | Not allowed | No |
| Exposed Joker exchange | Exact matching natural tile | Timing varies |
| Conflicting calls | Mah Jongg generally has priority | Detailed timing varies |
| Wall exhausted | Draw/wall game | Scoring treatment varies |
| Three-player game | Use a defined adaptation | Yes |
| Tournament mistake | Ask the director | Event rules control |
Five rules that prevent most beginner errors
If you remember only five points, use these:
- Play from the current card. A legal hand must match the 2026 line exactly.
- Count your tiles. East starts with 14; others start with 13; a normal turn draws then discards.
- Never pass a Joker. This applies to the Charleston and courtesy pass.
- No Jokers in singles or pairs. Group size and spacing matter.
- Ask before moving tiles in an edge case. Corrections become harder after a discard, draw, or exposure is committed.
Questions with ruleset-dependent answers
Some beginner questions do not have one safe answer without naming the authority. Ask before play when you need to know:
- Exactly when the second Charleston may stop
- Which blind passes are permitted
- When a verbal or physical call becomes binding
- Whether an exposure can be corrected
- Who may declare another hand dead
- Whether Jokers in a dead hand remain exchangeable
- How a false Mah Jongg is penalized
- How three-player passing works
- Whether scoring bonuses stack
- How tournament standings are calculated
For a social game, write down the chosen procedure. For a tournament, the event’s current rules and director control.
A 60-second pregame rules check
Before the walls are built, one player can say:
“We are playing four-player NMJL-style American Mah Jongg with the 2026 card. Let’s confirm the second Charleston, blind passing, Joker-exchange timing, mistake corrections, and scoring. If a tournament-style ruling is needed, we will pause before moving tiles.”
That short conversation makes the rest of the session friendlier and more consistent.
Start playing with a complete American Mahjong set for home, clubs, and gifts.
Shop American Mahjong SetsRelated guides
- How to play American Mahjong
- The Charleston step by step
- Joker rules for beginners
- How an American Mahjong turn works
- American Mahjong terms glossary
Editorial note
Independently produced by USA Mahjong; not affiliated with or endorsed by the National Mah Jongg League. Reviewed for the 2026 card and current published guidance; tournament and house rules may differ. The annual National Mah Jongg League card defines legal hands and is not reproduced or replaced by this FAQ.
