Best for players who want depth and a defensive game – reading discards, betting on riichi, and building toward a deep yaku catalogue. This is the most-played ruleset in tournaments worldwide.
The goal. A winning hand is 14 tiles: four sets, plus one pair – or one of two special shapes. Between turns you hold 13; the 14th is the tile that completes your hand, whether you draw it yourself or claim it from a discard.
Any combination of these counts. Your hand does not need one of each.
Two special shapes skip this four-sets-plus-pair structure entirely: Seven Pairs (seven different pairs, no sets at all) and Thirteen Orphans (one of every terminal and honour, plus a duplicate of any one). Both are defined fully as scoring patterns in Section 07.
To win, your hand must pass both checks
A hand can pass Shape and still fail Value: a structurally complete hand with no yaku is not a legal win yet, even one tile from finishing. Keep improving it, or declare riichi and wait – full rules in Section 06.
A reaction window opens on each discard and closes the moment the next player draws. Only the most recently discarded tile can be claimed, and you cannot claim your own discard.
This catalog is your hand's Value, itemized. Every pattern below is a yaku: a named hand pattern worth a set number of han. Clearing the win gate means qualifying for at least one yaku on this list – keep this section open while you decide what your hand is trying to become.
At the deal, one tile on the dead wall is flipped face-up as the dora indicator. The indicator does not score itself – it points to the tile that does: the next tile in sequence after it. Every dora tile in your final hand is worth +1 han, on top of anything else the hand already earns.
Running bank: each player starts a hanchan with 30,000 points (WRC; many casual tables use 25,000). Every hand moves points between the four pools; no money is ever part of the rules. A hand's value is built from two units that multiply together: han (from yaku and dora, roughly doubling per han) and fu (minipoints, which only matter below 5 han – from 5 han up, fu is ignored entirely).
Han is a running tally: every yaku your hand qualifies for (Section 07), at its listed value, plus +1 for every dora tile (Section 08). An open hand loses a han on any yaku marked ↓. Once you have the total: 1–4 han needs a fu count below; 5+ han skips fu entirely and reads straight off the limit tiers.
WRC kiriage: 4 han 30 fu and 3 han 60 fu both round up to mangan.
If the live wall runs out with no winner, players reveal whether they are tenpai (ready) or noten (not), declaring in turn from East. The noten side collectively pays the tenpai side:
Riichi deposits stay on the table for the next winner. A tenpai player may choose to declare noten and hide their hand – except after declaring riichi, which forces a tenpai reveal.
Players rank by final points, adjusted by uma placement bonuses (+15,000 / +5,000 / −5,000 / −15,000, split on ties). The break-even point is 30,000, with no oka. Across a tournament, the player with the highest sum of hanchan scores wins; recommended tiebreakers are most first places, then fewest fourth places, then highest single hanchan.
Yes, but only a guest wind – one that's neither your seat wind nor the round wind. Dragons and valued winds are never allowed, because those pairs already carry their own yaku value on their own, and pinfu specifically requires a “valueless” pair. If your pair is a dragon or a valued wind, the hand doesn't qualify for pinfu (though the pair might still score its own separate yaku).
No. Pinfu requires the entire hand to be fully concealed, not just the pair or the wait. Calling chii still leaves every set as a sequence, so the shape looks right, but any call – chii included – breaks the closed status pinfu depends on. It's not that chii specifically is banned; it's that pinfu is really “all sequences + closed,” and chii ends “closed.”
No – only one. The win goes to whichever eligible player sits nearest counterclockwise after the discarder (the “head-bump”); how fast anyone calls doesn't matter. There's only ever one winner per hand.
No. This is called swap-calling (kuikae), and it's forbidden two ways: you can't claim a tile and immediately discard that exact same tile back, and you can't claim a tile to complete a sequence and then discard the tile from the other end of that same run. For example, calling a 1-dot to meld 1-2-3 dot and then discarding a 4-dot right after isn't allowed – it's functionally the same swap.
No. Robbing the kan (chankan) only applies to a kan made by adding a tile to an already-exposed pon – that's the one moment where the completing tile is out in the open before it's folded into the meld. A concealed kan is placed all at once, straight from your hand, so there's no equivalent moment to rob. Declaring an ankan is always safe from chankan.
Not by default – the WRC 2025 tournament ruleset this book follows leaves them out entirely. If your table wants them, it's a common house addition worth +1 han per red 5 you hold, but it isn't part of the standard ruleset taught in this chapter.
The dealer stays if East wins, with a continuance counter (honba) added. It's not a fixed rule regardless of outcome, though – on a draw it depends on East's own status: if East is tenpai, the deal repeats and a honba is added; if East is noten, the deal rotates like a loss and all honba reset.
If the live wall runs out with no winner, every player reveals whether they're tenpai or noten. The noten side collectively pays 3,000 points to the tenpai side, split evenly across however many players are on each side – so a lone tenpai player collects the full 3,000, while three tenpai players each collect 1,000 from a single noten player, and so on. Whether the dealer stays afterward depends on East's own tenpai status (see above).
This is a guide to Japanese Riichi Mahjong, built from the World Riichi Championship (WRC) 2025 competition rules.
Played it differently at your table, or think there's a more common way to run a rule? Let us know – genuinely appreciated, and repeated feedback can shape a revision.
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