Japanese Riichi Yaku List Hand Composition Yaku All Simples – Tanyao – (1) • Hand must not contain terminals, or 1’s or 9’s Triplet of Dragons, Round Wind. Yaku are hand patterns and/or luck situations in rīchi mahjong. To win a hand, besides it being a complete hand, it must have at least one scoring element. Mahjong on selfdraw (Tsumo). A player who has at least one yaku, can always declare mahjong, even if he is furiten. Riichi. Waiting on a concealed hand.

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This may include tiles underneath the dora indicators revealed by kan calls.

The seven pairs yaku is not counted in this case, because this yakk is actually composed of sequential melds, rather than pairs.

The above list is generally considered as the “standard yaku”, including the yakuman. Otherwise, the player may continue to play with a ready hand without making a declaration. Each yaku has an assigned han value which is used for scoring. The hand includes three groups of triplets or closed quads that have been formed without calling any tiles.

Otherwise, it may be counted as tsuuiisou.

List of yaku – Japanese mahjong wiki

When draws occur after ready hand declarations, any riichi deposits mahojng and are placed near the counterswith the next winner receiving those riichi deposits.

They each have patterns, and they each have identifiable names. A player’s discards are all terminals and honors. Mentanpin is shorthand for a combination of menzen tsumo, tanyaoand pinfu. This yaku is applied to discards, as opposed to the hand value itself.


Altogether, a hand’s points value increases exponentially with every han a hand contains. When this hand has a shanpon pattern and the win is via ron, then it would not be counted as such; only as the lesser toitoi with sanankou. This yaku does not specifically deal with a player’s hand, but rather the player’s discards. Tan’yaochuu literally means “no 1’s or 9’s”. It is very unusual to play with rules that will allow it. This hand is sometimes also referred to as houtei. Japanese-language versionDecember 24, Dora tiles don’t count as yaku and they only increase han value.

Mahjongg non-dealer player wins on a discard at the first round. The yaku is not counted in the case since the hand has a yakuman value.

Essentially, the tile needed to complete a Kan is stolen to complete a winning hand. At the time, another player can win on the tile, namely, they can “rob” that tile. The format of this yaku does not count iipeikou when three pairs are in sequence.

Mahjong yaku

This hand is a local rule and not majhong officially recognized rule for Japanese mahjong. In the case of multiple winners, the player closest to the discarding player moving forward receives all riichi deposits.

This is the seven pair variation to all honors. Kuisagari – Takame and yasume – Compatibility. Any complete composition is acceptable. All other conditions are the same as declaring a normal ready. The following yakuman are automatically worth the limit in points based on their composition.

Riichi Mahjong Yaku List | UBC Mahjong Club

For completion, one tile may be paired. Optional yaku Game rules. A rule says that players can win on other players’ first discard and thus some players can go out after the first draw, and another says that players must win on the dealer’s first discard. The tiles for the three triplets or quads must all be self-drawn in order to count.


In most cases, if a draw occur after a ready hand declaration, resulting in ending the game such as exhaustive draws in the final round with the last dealer not ready to win or exhaustive draws causing one or more players to reach a negative scorethe game ends with the riichi deposits unclaimed. In general rules, the yaku is achieved if a non-dealer completes a hand with a discard before the first self-drawing when no one has declared open melds. The yaku and their values are essential for scoring.

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Optional yaku are additional yakuwhich may be appended to the standard list according to specific house rules. The first two, tan’yao and yakuhai are very commonly used yakudue to their ease. In the case of a single-tile wait for the pair, the tile can either be self-drawn or won from another player’s discard, and it is worth two yakuman.

If a player wins in a way wait for the pair, the hand is worth two yakumanwhich is called daburu double yakuman. Retrieved from ” http: All yaku can be divided into seven basic categories, depending on the dominant feature.

A player is dealt a hand, by which, no two tiles can reasonably form a tile group with a tile draw.