Every American Mahjong hand ends one of two ways: someone completes a valid hand and declares Mahjong, or the wall runs out first and the round ends with no winner. Here’s what each actually looks like at the table.
Going Mahjong
To win, you need 14 tiles that exactly match one of the patterns printed on the current NMJL Card — not just any grouping of sets and a pair, but a specific published combination for that year. You can complete your hand in two ways:
- Self-drawn — you draw the final tile you need directly from the wall.
- Called — another player discards the tile you need, and you call it to complete your hand rather than an exposure.
When you complete a hand, you declare “Mahjong” and lay your tiles down so the table can verify the combination against the current Card. This is also the moment concealed versus exposed status matters most, since many hands score differently — and a few require a fully concealed hand — depending on how you built it.
Wall game (no winner)
If the wall runs out of tiles before anyone completes a hand, the round ends as what’s usually called a wall game. No one scores a win, the tiles are reshuffled, and a new hand begins. Depending on your table’s convention, the dealer position may rotate or stay the same after a wall game — this is one of the few areas where local groups sometimes differ, so it’s worth confirming with your table.
Dead hands
A hand can also be ruled dead before the wall runs out — for example, if a player is discovered to have the wrong number of tiles, or if an exposure turns out not to match anything valid on the current Card. A dead hand can’t win that round even if it would otherwise be complete, so it pays to double-check your tile count regularly rather than only at the end. See our terminology glossary for related terms like wall game and exposure.
Why the Card matters here
Because “going Mahjong” means matching a specific published hand rather than any generic winning shape, the NMJL Card is really the rulebook for what counts as a finish at all. If you’re still getting comfortable reading it, our NMJL Card Guide walks through how the card is organized without reproducing the League’s actual hand list.
Concealed vs. exposed at the finish line
Whether your winning hand is concealed or exposed matters more at the moment you go Mahjong than at almost any other point in the game. A concealed hand — one built entirely from your own draws, with no called exposures — typically scores higher on hands where the Card allows both concealed and exposed versions, and some hands require a concealed hand outright. If you’ve been calling Pungs or Kongs throughout the hand, double-check that the specific hand you’re completing actually permits exposures before you declare.
Verifying a Mahjong call
When a player declares Mahjong, it’s normal and expected for the rest of the table to check the declared hand against the current Card before anyone concedes the round. This isn’t considered rude — it’s standard practice, since an incorrectly declared hand needs to be caught before scoring, not after. Most experienced players lay their tiles down clearly, grouped to match the Card’s listed pattern, specifically to make this check easy.
What a wall game means for the next hand
A wall game isn’t a loss for anyone at the table — it simply means the round didn’t resolve before the tiles ran out. Depending on your group’s convention, the same player may deal again or the dealer position may rotate to the next player. Because this is one of the areas where local groups genuinely differ, it’s worth settling the convention with your regular table early rather than debating it mid-game.
Frequently Asked Questions
Can you win with a hand that isn’t on the current Card?
No. Only hands matching a pattern printed on the current-year NMJL Card count as valid wins, which is why the Card is reissued and re-checked every year.
What happens to the dealer position after a wall game?
This varies by table convention; some groups keep the same dealer for another hand, others rotate. Confirm with your group if it isn’t obvious.
Is it rude to double-check someone’s winning hand?
No — verifying a declared Mahjong against the current Card is standard practice, not an accusation. Most players expect and welcome the check.
Can you go Mahjong on a tile you draw yourself?
Yes — this is a self-drawn win, and on many Card hands it’s scored the same as or higher than a hand completed by calling another player’s discard.
What losing players do at the end of a hand
When one player goes Mahjong, the other three don’t need to have a complete hand at all — unfinished hands simply don’t score that round. It’s common practice for the other players to briefly show their racks or at least confirm their tile count, mostly as a courtesy and a final check that no one had an undetected dead hand sitting unnoticed. This isn’t required everywhere, but it’s a widespread and generally appreciated habit.
Starting the next hand
After a hand ends, whether by a win or a wall game, the tiles are gathered, washed (shuffled face-down), and rebuilt into new walls for the next round. If East won the previous hand, East typically stays as dealer for another hand; if East didn’t win, the dealer position usually passes to the next player, though as with wall games, this can vary slightly by table convention. Confirming your group’s approach at the start of a session saves confusion later.
It’s worth building in a short break between hands, especially early in a session, to recount tiles and make sure everyone’s rack is reset cleanly. Rushing straight into the next wall build is one of the more common ways small tile-count errors carry over from one hand into the next, which can cause confusion well after the original mistake happened.
Not sure how the Charleston sets up your hand in the first place? Read the Charleston guide →
