Riichi Mahjong Rules for Beginners: Why a Complete Hand May Not Win

Wind & Honour Editorial Team

Riichi Mahjong rules require more than a complete-looking hand: you need a valid structure, at least one yaku and a permitted way to take the winning tile. Dora bonuses cannot replace a yaku, and declaring riichi is not compulsory if your hand already qualifies another way.

If an app refuses your win or a friend says “no yaku”, check those three requirements separately. This Japanese Mahjong guide takes you through a first hand, then explains the two common surprises: a bonus tile does not authorise a win, and a tile you need may still be unavailable for ron.

Written by Wind & Honour Editorial Team. Reviewed 23 September 2026. Rules reference: EMA 2025, with its June 2026 official annotations.

Which Riichi Mahjong rules does this guide use?

We use the European Mahjong Association's 2025 rulebook throughout. Its game uses 136 tiles: the three numbered suits, four Winds and three Dragons, with four copies of each tile type. Flowers, Seasons, jokers and red fives are not used in this EMA version. Other clubs and online games may use red fives or different procedures; check the selected rules before transferring a lesson.

Start with Mahjong Tiles Explained if the faces are unfamiliar. For a choice between game families, use our Chinese, American and Riichi comparison. The MCR eight-point requirement in our Chinese competition lessons does not apply here.

How to play Riichi Mahjong: your first turn

Four players prepare the walls and deal using the EMA setup procedure. East, the dealer, starts with fourteen tiles; the other players start with thirteen. East makes the opening discard without drawing again. After that, the ordinary rhythm is draw, consider your options, then discard; play proceeds counterclockwise unless a call changes the order.

Reserve fourteen tiles as the dead wall rather than using them for ordinary draws. Under EMA rules, do not physically separate this section from the wall at the start. It supplies replacement draws and indicators under specific rules; it is not an extra pile to draw from whenever your hand looks short. For your first practice, let an experienced player manage the wall break and indicator positions while you concentrate on the hand.

Action What a beginner should notice
Chii: claim a sequence Claim the previous player's discard to complete three consecutive ranks in one suit. The called set is exposed and the hand becomes open.
Pon: claim a triplet Claim another player's discard to complete three matching tiles. This also opens the hand.
Kan: declare a quad A quad counts as one set, with a replacement draw. An open kan opens the hand; a concealed kan does not itself break the concealed status. Use the full rules for timing and restrictions.

A sequence formed entirely from your own draws does not open the hand. Before calling a discard for a set, ask: “Which yaku will remain available?” Some yaku need a concealed hand. Calling simply because a set is available can remove the route you were relying on.

Why a complete hand may not win: shape, yaku and dora

The ordinary structure is four sets and a pair. With no quads, that is fourteen tiles, including exposed sets and the winning tile. Each declared quad adds one physical tile while still occupying one set. Special structures such as Seven Pairs and Thirteen Orphans have their own conditions.

Structure
Can you organise the tiles into an allowed completed hand?
Yaku
Does the hand or winning situation satisfy a recognised scoring condition? At least one is required.
Dora
These are bonus tiles identified through indicators. They add value to a qualifying win but are not a yaku.

The indicator points to a bonus tile; it does not act as a joker. For example, a 4 Dots indicator makes 5 Dots dora. That 5 Dots still behaves as 5 Dots when making sets. Holding several copies is no substitute for finding a yaku.

Use this order when practising: identify the structure, name the yaku, then check the winning procedure. Calculate the final payment afterwards, with the full scoring reference. This keeps “I have lots of bonus value” separate from “I am allowed to win”.

Try a thirteen-tile wait and a fourteen-tile hand

Use this original exercise with no quads. Assume the Red Dragon triplet was already exposed by a legal pon, so the hand is open. All other groups below remain concealed until the win. The count includes that exposed triplet.

Group Tiles before the winning tile
Exposed triplet: 3 tiles Red Dragon, Red Dragon, Red Dragon
Sequence: 3 tiles 1 Characters, 2 Characters, 3 Characters
Sequence: 3 tiles 4 Characters, 5 Characters, 6 Characters
Sequence: 3 tiles 6 Bamboo, 7 Bamboo, 8 Bamboo
Waiting singleton: 1 tile East

Before the win: 3 + 3 + 3 + 3 + 1 = 13 tiles. One more East completes the pair. The completed layout is Red Dragon / Red Dragon / Red Dragon; 1 / 2 / 3 Characters; 4 / 5 / 6 Characters; 6 / 7 / 8 Bamboo; East / East: four sets and a pair, fourteen tiles.

The Red Dragon triplet supplies a one-han yaku, including when that triplet is open. It does not establish a fixed total score for the whole hand. The winning circumstances, bonuses and remaining scoring details still need checking.

This hand cannot declare riichi because it is open, but it already has a yaku. That is a useful first lesson: the name of the game does not mean every winner must announce riichi.

Ron vs tsumo: why the same East may work differently

Tsumo means winning with your own draw. Ron means claiming a winning discard. In the exercise, a normally drawn East completes the hand for tsumo. An opponent's current East discard can complete it for ron if you are not furiten and the claim follows the rules.

Now change one fact: you discarded an East earlier in this hand. While your current wait is East, you are furiten and cannot claim an opponent's East for ron. Drawing East yourself can still produce a legal tsumo.

Furiten is a restriction on the player’s ron claims, not simply a ban on one tile. If any of your current completing tiles is in your own discard history, ron is blocked on all your current waits. That check includes tiles you discarded which another player called, and applies even if the hand completed by the old discard would lack a yaku.

Your own discards are not the only cause. Passing a discard that completes your hand, or passing a relevant opportunity to rob a quad, can create temporary furiten even without a yaku. Under this EMA version, temporary furiten ends at your next draw or claim. If you have already declared riichi and pass a completing discard, the restriction lasts for the rest of the hand. Read section 3.3.9 for the full cases.

What declaring riichi changes

Tenpai describes a hand one tile from completion. A concealed tenpai hand can declare riichi under the EMA procedure: announce it, make the declaration discard sideways and place a 1,000-point bet. At least one tile must remain in the wall. Concealed means you have not opened the hand by claiming a set; an allowed concealed kan does not by itself make it open.

Riichi provides a yaku, but commits you to the hand. You normally discard subsequent drawn tiles unless winning; only limited concealed-kan changes are allowed. If the declaration discard is taken for ron, the declaration does not take effect. Learn these restrictions before placing the stick, rather than treating riichi as a button to press whenever you are close.

A checklist for your first Japanese Mahjong session

  1. Name the rule version. Confirm whether the group follows EMA 2025 and whether red fives are used.
  2. Sort the tile families. Keep spares and unused extras out of the wall.
  3. Practise one turn slowly. Keep the drawn tile identifiable, discard visibly and let the group explain calls.
  4. Name your intended yaku. Check whether opening the hand would remove it.
  5. Before ron, check furiten. Review your discards and any missed winning opportunity.
  6. Before riichi, pause. Confirm concealed tenpai, the bet and what you may do afterwards.
  7. Score together. Identify the yaku before adding dora; ask for help with the complete payment calculation.

Common beginner questions

Do I have to declare riichi to win?

No. Riichi is one possible yaku. The open Red Dragon example already qualifies through its dragon triplet, provided the other winning conditions are met.

Does dora count as a yaku?

No. Dora adds bonus value after the hand meets the yaku requirement. A bonus-rich hand with no yaku still cannot win.

Can I win by tsumo while furiten?

Yes, if the hand otherwise meets the winning conditions. Furiten prevents ron; it does not remove a valid self-drawn win.

Does calling pon always stop me from winning?

No. Pon opens the hand and removes concealed-only options, but open-hand yaku remain possible. Identify which one you are pursuing before making the call.

Can I follow an online game's tutorial at an EMA table?

Use it to learn familiar faces and vocabulary, then compare the actual rules. Red fives, procedures and penalties can differ. A platform's settings are not automatically the EMA code.

Choose your next lesson

Return to Mahjong 101 to choose a learning route, or review the tile families. Our three-game comparison keeps the different winning requirements in context.

When checking equipment, browse Mahjong tiles and sets and compare each listing's verified contents with your group's requirements. This lesson does not certify a particular product for Riichi play.

Sources and rule scope

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