American Mah Jongg becomes much easier to understand when the game is separated into two different layers:

The annual card tells you which hands are legal.

The rules tell you how you are allowed to build those hands.

A beginner therefore does not need to memorize every possible combination before playing. What matters first is understanding the structure of the game, how a turn works, when a discard may be called, how exposures work, when Jokers are legal, and how a winning hand is verified.

This guide focuses specifically on American Mah Jongg, commonly searched as American Mahjong.

It does not teach every possible strategy and it does not reproduce the copyrighted hands printed on the annual National Mah Jongg League card.

For local learning options, compare Mahjong classes in Monmouth County.

If you have never played and want to understand how to prepare before your first lesson, learn how to start American Mah Jongg as a beginner.

Quick Answer: How Does American Mah Jongg Work?

In standard American Mah Jongg:

1. Four players begin with tiles arranged on racks.
2. East starts with 14 tiles and the other players begin with 13.
3. Players complete the Charleston before ordinary play.
4. After the Charleston, players draw and discard in turn.
5. Certain discarded tiles may be claimed to create legal exposures.
6. Jokers may be used only where the rules and selected card hand permit them.
7. The first player whose 14 tiles exactly match one complete legal hand on the current annual card declares Mah Jongg.
8. The hand is checked before the game is considered won.

Current American Mah Jongg references confirm the basic structure of four players, 152 tiles, racks, dice, an annual card, the Charleston, drawing and discarding, and a 14-tile winning hand. American Mah Jongg Association

Rules Verification for 2026

Last rules review: August 2026

The current annual card for organized current-year play is the 2026 card.

The annual card changes the legal hands available for that year, while many core procedures of American Mah Jongg remain consistent from year to year. American Mah Jongg Association

For rules disputes, card-specific interpretation, penalties or unusual situations, use the current card and current official National Mah Jongg League materials as the controlling authority.

This article is an educational explanation. It is not an official National Mah Jongg League publication.

What Is American Mah Jongg?

American Mah Jongg is one form of the much broader Mahjong family of games.

It should not be treated as interchangeable with Chinese Mahjong, Hong Kong Mahjong, Japanese Riichi Mahjong or other regional forms.

American Mah Jongg is distinguished by features including:

• an annually updated card of legal hands
• Jokers
• the Charleston
• racks
• American-specific calling and exposure procedures

That is why someone searching online for simply “Mahjong rules” can easily end up learning the wrong version.

Always confirm the variation first.

The Most Important Rule: Your Hand Must Match One Complete Card Line

A winning American Mah Jongg hand is not created by assembling something that merely resembles a traditional Mahjong hand.

Your 14 tiles must match one complete legal line on the current annual card.

You cannot combine part of one line with part of another.

The numbers, suits, Winds, Dragons, Flowers, grouping sizes, exposure status and Joker restrictions must all comply with the selected hand.

Current American Mah Jongg references state that a legal win requires exactly 14 tiles matching one complete line on the current card. American Mah Jongg Association

This is one of the first principles every beginner should remember:

Close is not Mah Jongg.

The hand must match.

Rules, Strategy and Etiquette Are Not the Same Thing

A great deal of beginner confusion disappears when these three categories are separated.

Rules

Rules determine what is legally permitted.

Examples include:

• whether a discard can be called
• whether a Joker can be used
• whether an exposure is legal
• whether a hand must remain concealed

Strategy

Strategy determines which legal choice you think gives you the strongest position.

Two players can make different strategic decisions without either breaking a rule.

Etiquette

Etiquette concerns table communication and accepted playing behavior.

It helps a game proceed clearly and comfortably but should not automatically be confused with the formal rules.

This guide focuses specifically on the rules of American Mah Jongg.

Strategy and etiquette are covered separately so this guide can stay focused on the rules themselves.

The American Mah Jongg Tile Set

Standard American play uses 152 active tiles. American Mah Jongg Association

The main tile categories include:

Dots

Numbered from 1 through 9.

Bams

Also numbered from 1 through 9.

Craks

Also numbered from 1 through 9.

These are the three numbered suits.

Winds

North, East, West and South.

Winds are not one of the three numbered suits.

Dragons

Red, Green and White Dragons.

Flowers

Flowers are suitless.

Jokers

Standard American play uses eight Jokers.

Jokers are flexible, but they are not unrestricted wild tiles.

Understanding the Annual Card

The annual card is central to American Mah Jongg.

It tells players which hands are legal during that card year.

The printed colors on the card represent suit relationships, not necessarily the literal colors of physical tiles.

This distinction is important.

A beginner should learn how to interpret:

• numbers
• grouping sizes
• suit relationships
• Winds
• Dragons
• Flowers
• exposed versus concealed designations
• Joker restrictions

without trying to memorize every hand.

The card changes annually, which is why current-year rules content should always identify which card year is being discussed. American Mah Jongg Association

Setting Up the Game

American Mah Jongg is normally played by four players.

The tiles are mixed and walls are constructed around the table.

Each player's wall is two tiles high and nineteen tiles long.

East begins with 14 tiles.

The other players begin with 13.

After the initial deal, the Charleston takes place before normal drawing and discarding begins. American Mah Jongg Association

The detailed physical procedure for breaking the wall and dealing is easier to understand when demonstrated at an actual table.

For a beginner, the key point is:

East starts with 14. Everyone else starts with 13.

The Charleston

The Charleston is the structured passing phase that takes place before normal play.

First Charleston

The standard first Charleston is:

Right → Across → Left

Players pass three face-down tiles during each stage.

The first Charleston is mandatory under standard play, except in the unusual circumstance where the game has already legally ended before it would begin. American Mah Jongg Association

Second Charleston

A second Charleston may follow:

Left → Across → Right

The second Charleston is optional and proceeds only when everyone agrees. American Mah Jongg Association

Can You Pass Jokers During the Charleston?

No.

Jokers cannot be passed during the Charleston. Only natural tiles may be passed. American Mah Jongg Association

This is a straightforward rule worth memorizing early.

Never pass a Joker in the Charleston.

What Happens After the Charleston?

Once the Charleston and any applicable final exchange are complete, ordinary play begins.

East makes the first discard.

Play then proceeds counterclockwise.

On a standard turn, a player:

1. Receives an incoming tile.
2. Checks the hand.
3. Performs any legal action available during that turn.
4. Discards if the hand has not ended.

For an ordinary wall turn, that incoming tile is drawn from the wall.

A player should generally move between:

13 tiles between turns

and:

14 tiles after receiving the incoming tile

before returning to 13 with a discard.

Exposed tiles remain part of the total hand count.

Drawing and Discarding

The basic rhythm is:

draw → evaluate → discard

A player draws a tile and then decides whether:

• the hand is complete
• the tile improves the hand
• another legal action is available
• a different tile should be discarded

A discarded tile is placed face up and identified clearly.

The important beginner discipline is maintaining the correct tile count.

If an exposure, claim or exchange occurs, count everything in the hand rather than only the concealed tiles on the sloping portion of the rack.

When Can You Call a Discard?

You may not take any discarded tile simply because it would be useful.

A discard generally needs to immediately complete a legal grouping that may be exposed under the hand you are playing.

American Mah Jongg references identify legal calls for qualifying groupings such as Pungs, Kongs and Quints, while singles and pairs generally cannot be called except when the discard completes Mah Jongg. American Mah Jongg Association

Before calling a discard, ask three questions:

1. Does this tile immediately complete the grouping?

If not, do not call it.

2. Is that grouping legally exposable?

If the hand must remain concealed, an ordinary exposure is not allowed.

3. Does the resulting exposure still fit a complete card hand?

Creating an exposure that makes your hand impossible can make the hand invalid or dead.

What Is an Exposure?

When a discarded tile is legally called to complete an allowed grouping, the completed grouping is placed visibly on the rack.

That is an exposure.

An exposure provides information to every other player and also limits which card hands your rack can still legally represent.

That is why calling a tile should never be treated casually.

Before exposing, check the full line you are pursuing.

Exposed vs Concealed Hands

The annual card distinguishes between hands that may be exposed and hands that must remain concealed.

Exposed hand

A qualifying discard may be called to create an allowed exposure.

Concealed hand

An ordinary exposure is not allowed.

For concealed hands, a discarded tile may generally be claimed only when it completes Mah Jongg. American Mah Jongg Association

This is a crucial beginner distinction.

Concealed does not mean you stop drawing, discarding or participating.

It means you cannot make an ordinary exposed grouping while pursuing that concealed hand.

How Jokers Work

Jokers are one of the defining features of American Mah Jongg.

Under standard rules, Jokers can substitute within qualifying groupings of three or more identical tiles, including Pungs, Kongs, Quints and Sextets where applicable. American Mah Jongg Association

Jokers cannot be used in:

• singles
• pairs

That is one of the most important Joker rules to memorize.

If the annual card requires a single tile, that position must be natural.

If it requires a pair, both tiles must be natural.

The selected card hand may also impose additional restrictions, so the annual card always needs to be considered alongside the general Joker rules.

Joker Exchanges

A Joker visible in a legal exposure may sometimes be exchanged for the corresponding natural tile.

The important beginner rule is that the exchange takes place during your own turn.

Current rules also make clear that the turn must first properly begin with the incoming tile step before a Joker exchange is performed, according to the American Mah Jongg Association.

In simplified form:

1. Begin your turn correctly.
2. Identify an exposed Joker you can legally exchange.
3. Supply the exact natural tile represented by that Joker.
4. Receive the Joker.
5. Continue the turn according to the rules.

A Joker exchange does not allow you to ignore the normal structure of a turn.

Can You Claim a Discard Just to Exchange It for a Joker?

No.

A discarded tile is not simply available because it matches a tile represented by an exposed Joker.

Calling a discard and performing a Joker exchange are different legal actions.

Do not combine them unless the actual call itself is independently legal.

Can a Concealed Hand Make a Joker Exchange?

Yes, a player working on a concealed hand can make a legal Joker exchange because the exchange itself does not expose tiles from that player's concealed hand. American Mah Jongg Association

This is a useful example of why the exact rule matters.

“Concealed” does not mean “no table actions whatsoever.”

It means the hand cannot create an ordinary exposure.

What Is a Dead Hand?

A hand may become dead when a rule violation or visible condition prevents it from legally becoming a winning hand.

Examples can include:

• illegal exposure
• incorrect tile count
• prohibited Joker use
• exposing a concealed hand
• an exposure that no longer fits any complete card line

Current American Mah Jongg references identify these as common causes of dead hands. American Mah Jongg Association

Detailed penalties and what happens after a hand is declared dead can depend on the precise error and governing procedure.

Because those consequences matter, use current official rules rather than relying on memory or informal table customs when a dispute occurs.

Do Not Call Someone's Hand Dead Based on a Guess

A challenge should be based on something legally visible or otherwise established under the governing rules.

You cannot see another player's concealed tiles.

That means you should not declare a hand impossible merely because you cannot personally imagine what the player is pursuing.

If a problem arises:

1. Stop moving tiles.
2. Identify the exact issue.
3. Preserve the visible state of the table.
4. Check the current governing rule.

Do not solve rules disputes by voting on what everyone remembers.

Declaring Mah Jongg

A player declares Mah Jongg when all 14 tiles form one complete legal hand on the current card.

Before accepting the win, check four things.

Pattern

Does every tile match one complete card line?

Count

Are there exactly 14 tiles?

Exposure status

Does the hand satisfy the exposed or concealed requirement?

Jokers

Is every Joker being used legally?

A valid American Mah Jongg hand must satisfy all of these requirements. American Mah Jongg Association

What If Nobody Wins?

If play reaches the appropriate end of the playable wall without a valid Mah Jongg, the hand ends without a winner.

Detailed dealing rotation and continuation procedures should follow the current governing rules used by the table or event.

Common American Mah Jongg Rules Mistakes

Beginners commonly run into a relatively small group of problems.

Combining different card lines

A winning hand must match one complete line.

Reading card colors literally

Colors indicate suit relationships, not necessarily the physical color of the tile.

Calling a tile because it might be useful

A call must be legal at the moment it is made.

Calling an ordinary single or pair

Singles and pairs generally cannot be completed through an ordinary exposure.

Using a Joker in a single or pair

Jokers are prohibited in singles and pairs. American Mah Jongg Association

Passing a Joker during the Charleston

Not allowed. American Mah Jongg Association

Performing a Joker exchange before beginning the turn correctly

The incoming-tile step matters. American Mah Jongg Association

Drawing after legally claiming a discard

A claimed discard becomes the incoming tile for that action. Do not automatically take another wall tile.

Exposing a concealed hand

A concealed hand cannot make an ordinary exposure. American Mah Jongg Association

Losing track of the tile count

Always include exposed tiles when checking the total.

American Mah Jongg vs Other Mahjong Variants

American Mah Jongg shares historical roots with other Mahjong traditions but follows a distinct playing system.

Features particularly associated with American Mah Jongg include:

• the annual card
• the Charleston
• Jokers
• American-specific exposure procedures

Rules learned for another Mahjong variant should therefore not automatically be applied at an American Mah Jongg table. American Mah Jongg Association

If you are joining a new group, ask:

“Which version are we playing?”

before studying the rules.

What Should Control When Players Disagree?

Use a clear source hierarchy.

1. Current annual card

Use it for:

• current legal hands
• printed card instructions
• exposed/concealed status
• current hand patterns
• card-specific restrictions

2. Current official National Mah Jongg League guidance

Use it for:

• governing procedures
• penalties
• disputes
• unusual situations
• official interpretations

3. Rules established by the host or event

These may govern legitimate event procedures provided they do not rewrite the underlying game in a way participants have not agreed to.

4. House customs

These may address optional social conventions.

They should not be presented as official rules when they are not.

This hierarchy is much safer than:

“That is how my friend taught me.”

How Live Instruction Can Help

A written rules guide can explain what is legal.

It cannot see the rack in front of you.

During live play, several concepts operate simultaneously:

• tile recognition
• card interpretation
• turn sequence
• exposure legality
• Joker rules
• hand selection
• table communication

That is one reason guided instruction can be useful for new players.

A beginner can ask about the exact situation while it is happening rather than trying to reconstruct it later.

For current instruction and practice formats, view upcoming Mahjong classes and events in Monmouth County.

For help choosing a class level or local learning experience. see our guide to Mahjong classes in Monmouth County.

FAQ: American Mah Jongg Rules

How many tiles are in an American Mah Jongg winning hand?

A valid winning hand contains 14 tiles and must match one complete legal line on the current annual card. American Mah Jongg Association

How many tiles are used in standard American Mah Jongg?

Standard play uses 152 active tiles. American Mah Jongg Association

Do I need the current annual card?

For current organized play, players use the current annual card because it defines that year's legal hands.

Can a Joker be used in a pair?

No. Jokers cannot be used in singles or pairs. American Mah Jongg Association

Can Jokers be passed during the Charleston?

No. Jokers cannot be passed during the Charleston. American Mah Jongg Association

What is the first Charleston order?

The first Charleston follows:

Right → Across → Left

with three tiles passed during each round. American Mah Jongg Association

Is the second Charleston mandatory?

No. The second Charleston is optional and occurs only when everyone agrees. American Mah Jongg Association

Can I call a discard to complete a pair?

Not for an ordinary exposure. A single or pair may generally be completed from a discard only when that tile completes Mah Jongg. American Mah Jongg Association

Can I call a tile while playing a concealed hand?

You cannot make an ordinary exposure while pursuing a concealed hand. A discarded tile may be claimed when it completes Mah Jongg as permitted by the rules. American Mah Jongg Association

Can I exchange for a Joker while playing a concealed hand?

Yes. A legal Joker exchange does not itself expose your concealed hand. American Mah Jongg Association

Are Flowers part of a suit?

No. Flowers are suitless. American Mah Jongg Association

Are Winds suits?

No. Winds are not one of the three numbered suits.

Is American Mah Jongg the same as Chinese Mahjong?

No. They belong to the broader Mahjong family but use different rules and playing structures.

Where should a complete beginner start?

Use the separate guide to learn how to start American Mah Jongg as a beginner.

Where can I compare local Mahjong classes?

You can compare Mahjong classes in Monmouth County.

Where can I see current Mahjong classes?

You can view upcoming Mahjong classes and events in Monmouth County.

Rules Review and Source Standard

This guide was reviewed for the 2026 American Mah Jongg card year in August 2026.

It separates three different forms of authority:

Annual card: controls the current legal hands.

Official rules: control legal gameplay and procedure.

Educational explanations: help beginners understand those rules but do not replace them.

The annual card itself is copyrighted, so this guide deliberately does not reproduce the individual 2026 hands.

Final Beginner Rules Checklist

Before declaring Mah Jongg, ask:

1. Am I using the correct annual card?
2. Does my hand match one complete line?
3. Do I have exactly 14 tiles?
4. Are my suits and groupings correct?
5. Are my exposures allowed?
6. Is every Joker legal?
7. If the hand is concealed, have I preserved that status?

During ordinary play, remember:

Receive the incoming tile.

Check the hand.

Take only legal actions.

Discard if play continues.

During the Charleston:

Never pass a Joker.

When calling:

The discard must be legally usable now, not merely useful later.

And when a table disagreement occurs:

Pause and verify the rule before moving more tiles.

For local learning formats, compare Mahjong classes in Monmouth County.

For first-time preparation, learn how to start American Mah Jongg as a beginner.

For current instruction and hosted play, explore upcoming Mahjong classes and events in Monmouth County.