How to Read the NMJL Card

Why the Card Matters

In American Mahjong, you can’t just collect any combination of tiles and call it a win. Every winning hand must match one of the patterns listed on the official NMJL card, published each year by the National Mah Jongg League. The card is the rulebook for what counts as a valid Mahjong.

If you’re new to the game, the card can look like a wall of cryptic symbols. But once you understand the notation, it’s surprisingly straightforward. This guide breaks it down.

Where to Get the Card

You can order the official card from nationalmahjonggleague.org. A new card is released every spring with a completely new set of hands. You’ll need the current year’s card to play, whether at a table or in an app like Mahj Parlour.

Understanding the Layout

The card is divided into categories, each grouping hands by a common theme. You’ll see section names like “2468,” “Quints,” “Consecutive Run,” and “Singles and Pairs.” Each section contains several hands, and each hand is written on a single line.

A typical hand line shows:

  1. The tile pattern you need to collect
  2. The point value of the hand (25, 30, 50, etc.)

Higher point values mean harder hands. They also mean bigger payouts when you win.

Reading the Symbols

Numbers

Numbers on the card (1 through 9) represent tile values within a suit. So “1 1 1” means three 1s of a particular suit.

Suit Colors

This is the part that trips up most beginners. The card uses colors to indicate which suits you need, but the colors on the card don’t correspond to specific suits. Instead, they tell you about the relationship between suits:

  • Same color means same suit (your choice of Craks, Bams, or Dots)
  • Different colors mean different suits

For example, if a hand shows a group in blue and another group in red, those two groups must come from two different suits. But you get to decide which suits fill those roles.

Letters and Abbreviations

  • F = Flower
  • D = Dragon (Red, Green, or White)
  • N, E, S, W = Wind tiles (North, East, South, West)
  • 0 = White Dragon (sometimes called “soap” or “zero”)
  • R = Red Dragon
  • G = Green Dragon

Some hands specify exact dragons or winds. Others leave it open, letting you use any dragon or any wind.

Groupings

Tiles on the card are grouped by spaces:

  • Pair = two identical tiles (e.g., “1 1”)
  • Pung = three identical tiles (e.g., “1 1 1”)
  • Kong = four identical tiles (e.g., “1 1 1 1”)
  • Quint = five identical tiles (e.g., “1 1 1 1 1”), which requires at least one Joker
  • Sextet = six identical tiles (e.g., “1 1 1 1 1 1”), requiring at least two Jokers

Remember that Jokers can only substitute in groups of three or more. You can never use a Joker in a pair. (For definitions of these and other terms, see our American Mahjong glossary.)

The “C” Marker

Some hands have a “C” next to them. This means the hand must be concealed. You cannot call any discarded tiles (except the final winning tile). Concealed hands are harder to complete but typically worth more points.

The “X” Value

Some hands use “X” to represent a variable number. For example, if a hand shows “XX XX XX,” the X could be any number, as long as each pair matches. The card will specify constraints, like consecutive numbers or matching values.

How to Pick a Hand

When you first look at your tiles after the deal, scan the card for patterns that overlap with what you’re holding. Here’s a practical approach:

  1. Look at what you have. Do you have clusters in one suit? Lots of winds? Several pairs?
  2. Find two or three candidate hands. Don’t lock in on one hand too early, especially before the Charleston.
  3. Evaluate flexibility. Hands that share tiles with each other let you pivot if your first choice stalls.
  4. Consider concealment. Concealed hands are risky. If you’re new, start with hands that allow exposures.
  5. Watch the table. As the game progresses, pay attention to what other players are discarding. If no one is throwing the tiles you need, that’s a good sign.

Practice Reading the Card

The best way to get comfortable with the NMJL card is to play. Each game forces you to scan the card, evaluate your tiles, and make a decision. Over time, you’ll start recognizing patterns at a glance.

Mahj Parlour supports the current year’s NMJL card, so you can practice reading and choosing hands against bots before playing with friends or online opponents.