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'''Yaku''' {{kana|役}} are [[List of yaku|specific hand patterns or conditions]] | '''Yaku''' {{kana|役}} are [[List of yaku|specific hand patterns or conditions]] that score points, analogous to [[wikipedia:List of poker hands|poker hands]]. Each yaku is worth a specific amount of [[han]], and multiple yaku can be combined into one hand. Basic mahjong knowledge involves learning the yaku, but it is not expected of new players to know all of them. '''Most importantly, every hand must include at least one yaku in order to count as a winning hand'''. | ||
==Han== | ==Han== | ||
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The different yaku focus on different types of patterns and circumstances. They are mostly derived from the tiles within one's hand. A number of yaku also involve the state of one's hand pertaining to the timing of certain tile draws and discards. | The different yaku focus on different types of patterns and circumstances. They are mostly derived from the tiles within one's hand. A number of yaku also involve the state of one's hand pertaining to the timing of certain tile draws and discards. | ||
=== | ===Riichi=== | ||
A player can choose to declare [[riichi]] with any closed hand that is [[tenpai]] (one tile away from winning). | |||
* [[Riichi]] | |||
: Any closed hand in tenpai may choose to declare riichi, scoring this yaku. | |||
* [[Double riichi]] | |||
: A riichi on your first turn is a double riichi, which is worth more points. | |||
* [[Ippatsu]] | |||
: After declaring riichi, if you win by your next tile draw, you score this yaku. (Invalidated if anyone makes a [[naki|tile call]].) | |||
=== Win location based === | |||
These yaku are dependent on how you win the hand. These yaku can allow otherwise "yakuless" hands to win. | |||
'''Discard based''' | |||
* [[Chankan]] | * [[Chankan]] | ||
:Winning with a tile used for an [[shouminkan|added kan]] by another player. | :Winning with a tile used for an [[shouminkan|added kan]] by another player. | ||
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:Winning off of the last possible discarded tile for the hand. | :Winning off of the last possible discarded tile for the hand. | ||
'''Draw based''' | |||
* [[Haitei raoyue]] | * [[Haitei raoyue]] | ||
:Winning with the last tile draw. | :Winning with the last tile draw. | ||
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=== Honor based === | === Honor based === | ||
These yaku depend on the use of [[honor]] tile groups. These may be mixed with number tiles. | |||
* [[Honitsu]] | * [[Honitsu]] | ||
: | : All tiles are the same suit or honor tiles. | ||
* [[Honroutou]] | * [[Honroutou]] | ||
: | : All tiles are honor or terminal tiles. | ||
* [[Shousangen]] | * [[Shousangen]] | ||
:Specific collection of all three [[sangenpai|dragon types]]. | :Specific collection of all three [[sangenpai|dragon types]]. | ||
* [[Tanyao]] | * [[Tanyao]] | ||
:No honors or | :No honors or terminals are used. | ||
* [[Yakuhai]] | * [[Yakuhai]] | ||
: | :A triplet of any dragon, [[Jikaze|seat wind]], or round wind tiles. | ||
=== Sequential === | === Sequential === | ||
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* [[Iipeikou]] | * [[Iipeikou]] | ||
: | : Two identical sequences (two sequences with same suit and numbers). | ||
* [[Ittsu]] | * [[Ittsu]] | ||
: A complete string of 1-9 tiles, arranged into sequences of: 123, 456, and 789. | : A complete string of 1-9 tiles, arranged into sequences of: 123, 456, and 789. | ||
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: Every tile group must be a sequence (among other conditions). | : Every tile group must be a sequence (among other conditions). | ||
* [[Ryanpeikou]] | * [[Ryanpeikou]] | ||
: | : "Two iipeikou"; two sets of identical sequences. | ||
* [[Sanshoku]] | * [[Sanshoku]] | ||
: | : Three identically numbered sequences, one of each suit. | ||
=== Terminal based === | === Terminal based === | ||
These yaku revolve around [[ | These yaku revolve around [[terminal]], or complete lack thereof. | ||
* [[Chanta]] | * [[Chanta]] | ||
:Every tile group | :Every tile group, including the pair, has an honor or terminal. | ||
* [[Honroutou]] | * [[Honroutou]] | ||
: | :Every tile is an honor or terminal. | ||
* [[Junchan]] | * [[Junchan]] | ||
:Every tile group | :Every tile group, including the pair, has an honor or terminal. | ||
* [[Nagashi mangan]] | * [[Nagashi mangan]] | ||
:Every discarded tile is either a [[terminal]] or [[honor]] | :Every discarded tile is either a [[terminal]] or [[honor]] | ||
* [[Tanyao]] | * [[Tanyao]] | ||
:No terminals | :No terminals or honors are used. | ||
=== Triplet based === | === Triplet based === | ||
These yaku require at least one [[Koutsu|triplet]] in order to be valid. | These yaku require at least one [[Koutsu|triplet]] in order to be valid. [[Kan|Quads]] count as triplets for these yaku, but triplets don't count as quads. | ||
* [[Sanankou]] | * [[Sanankou]] | ||
: Three closed triplets. | : Three closed triplets. | ||
* [[Sankantsu]] | * [[Sankantsu]] | ||
: | : Three [[kan|quads]]. | ||
* [[Sanshoku doukou]] | * [[Sanshoku doukou]] | ||
: | : Three identically numbered triplets across the three suits. | ||
* [[Shousangen]] | * [[Shousangen]] | ||
: Triplets of [[sangenpai|dragon tiles]]. | : Triplets of [[sangenpai|dragon tiles]]. | ||
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: Every tile group is a triplet. | : Every tile group is a triplet. | ||
* [[Yakuhai]] | * [[Yakuhai]] | ||
: | : A triplet of: any dragon tile, your [[Jikaze|seat wind]], or the current [[Jikaze|round wind]]. | ||
=== Suit based === | === Suit based === | ||