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Coming from another mahjong

There Is No Chow in American Mahjong

If you learned the game anywhere else, this is the habit that will cost you tiles for a month.

July 31, 20263 MIN READ
On this page
  1. The entire legal vocabulary
  2. But the card says "consecutive run"
  3. Where the confusion comes from
  4. What to unlearn, specifically
  5. Why the game works without runs
  6. The one-sentence version

You have a four bam and a five bam. Somebody discards a six bam. Your hand moves before your brain does.

Put it back. That's not a thing here.

GROUPING JOKER? Single (1 tile) NEVER Pair (2 tiles) NEVER Pung (3 tiles) ALLOWED Kong (4 tiles) ALLOWED Quint (5 tiles) ALLOWED Sextet (6 tiles) ALLOWED
The line is simple: three or more identical tiles, a joker is fine. One or two, never — no matter what the card layout looks like.

Single, pair, pung, kong, quint, sextet. Every one of those is made of identical tiles. There is no grouping in American mahjong built from different tiles in sequence — no chow, no run, no straight.

A discard can only be claimed to complete a pung, kong, quint or sextet, or to declare mahjong. Never to make a run.

But the card says "consecutive run"

It does, and this is where people who've read the rules still get it wrong.

A consecutive run hand is several groupings of identical tiles, in the same suit, whose numbers happen to ascend. Something like a pung of ones, a pair of twos, a kong of threes. The numbers run. The tiles inside each group are all the same.

1D 1D 1D PUNG three identical 2D 2D PAIR two identical 3D 3D 3D 3D KONG four identical 9 tiles
This is what "consecutive" means — the numbers ascend across the groupings, while each grouping stays uniform. It is not 1-2-3 in a row.

Compare that to a chow in the Chinese or Japanese game, which is literally one-two-three, three different tiles making one group. That doesn't exist here at all.

Where the confusion comes from

AMERICANCHINESEJAPANESE Tiles in the set 152144136 Jokers 8nonenone* Runs (chow) neveryesyes Fixed list of hands yes — annual cardnono Opening tile exchange Charlestonnonenone * Japanese sets use red fives, which are not wild cards.
The three games share tiles and almost nothing else. If you already play one of the other two, the American column is your list of habits to unlearn.

Most people arriving at an American table have either played mahjong elsewhere or seen it in a film, and in almost every other version of the game runs are the backbone. Removing them changes what a hand even looks like.

What to unlearn, specifically

  • Don't collect near-runs. Holding a four and a five bam "in case" a six turns up buys you nothing. They're two unrelated tiles.
  • Don't hoard middle numbers. In games with runs, fives are gold because they connect in both directions. Here a five is worth exactly what a one is worth.
  • Do collect duplicates. Pairs are the currency. A pair becomes a pung becomes a kong.
  • Do read the card first. Your hand isn't built from general principles — it's built toward one printed line.

Why the game works without runs

Because it has two other things instead.

The first is the card: a fixed list of legal hands that changes every year. You're not assembling any valid combination, you're building one specific published shape. That gives the game its structure.

The second is jokers. Eight of them, usable in any group of three or more. Without runs you'd never complete anything from four copies of each tile — the jokers make the whole thing possible.

Take runs out and add jokers plus a fixed hand list, and you get a game that's less about tile efficiency and more about reading the table and committing early. Different skill, same tiles.

The one-sentence version

If a grouping contains two tiles that aren't the same tile, it isn't a grouping.

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Where this comes from

The list of legal groupings and the restriction on claiming discards follow the American Mah-Jongg Association's published rulebook. The meaning of consecutive run comes from the same source's guidance on reading the card. Tile counts for other variants are cross-referenced from general mahjong references.