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'''Toutenkou''' {{kana|東天紅}} is a | '''Toutenkou''' {{kana|東天紅}} is a [[sanma|3-player mahjong]] variant mainly popular in [[wikipedia:Kantō_region|Kanto region]]. It is currently available in [[Tenhou.net|Tenhou]] computer matches (beta test). | ||
'''Disclaimer''': This page only introduces the rules used in Tenhou. Details are not consistent, and variation exists in other platforms. | |||
'''Disclaimer''': This page only introduces rules used in Tenhou. Details are not consistent, and variation exists in other platforms. | |||
== Rule Introduction == | == Rule Introduction == | ||
There are 112 tiles, 28 types in total. All [[pinzu]], [[souzu]], and [[honor]]s are used; only {{#mjt:159m}} of [[manzu]] are used. | |||
{{#mjt:159m4z}} are gari {{kana|ガリ}} | {{#mjt:159m4z}} are gari {{kana|ガリ}}; gari tiles function identically to [[Sanma|nukidora]] in [[sanma]]. There are 20 rinshan tiles in total: | ||
* They can be called and set aside to count as 1 dora. After the call, one tile is drawn from the dead wall; winning with the tile scores [[rinshan]]. | |||
* They can be used in the hand or discarded, but won't count as points. | |||
A valid winning hand must include at least one of | ===Scoring=== | ||
A valid winning hand must include at least one regular [[yaku]]; it cannot win with just special yaku. The list of "regular yaku" is identical to the standard riichi mahjong yaku. | |||
Instead of calculating with [[fu]] and [[han]], the score is only counted with points. | Instead of calculating with [[fu]] and [[han]], the score is only counted with points. | ||
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== Special Yakus == | == Special Yakus == | ||
''' | All valid winning hands obtain 2 points by default (listed as '''base point''' / '''banban''' {{kana|バンバン}}). | ||
All of the following yaku are bonuses. Like [[dora]], a hand cannot be won with only these yaku: | |||
(1 pt) '''Oya''' {{kana|親}}: Add one point when winning as dealer. | (1 pt) '''Oya''' {{kana|親}}: Add one point when winning as dealer. | ||
(1 pt) '''Menzen''' {{kana|門前}}: Add one point when the winning hand is | (1 pt) '''Menzen''' {{kana|門前}}: Add one point when the winning hand is closed. | ||
(1 pt) '''Honba''' {{kana|本場}}: Add one point for each [[honba]]. | (1 pt) '''Honba''' {{kana|本場}}: Add one point for each [[honba]]. | ||
(1 pt) '''Gari''' {{kana|ガリ}}: Add one point for each nukidora ({{#mjt:159m4z}}). | (1 pt) '''Gari''' {{kana|ガリ}}: Add one point for each tile called for ''gari'' and set aside like nukidora ({{#mjt:159m4z}}). {{#mjt:0m}} is also a red dora, so it is worth 2 points. | ||
(2 pts) '''Minkan''' {{kana|明槓}}: Add two points for each opened kan. | (2 pts) '''Minkan''' {{kana|明槓}}: Add two points for each opened kan. | ||
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(4 pts) '''Ankan''' {{kana|暗槓}}: Add four points for each concealed kan. | (4 pts) '''Ankan''' {{kana|暗槓}}: Add four points for each concealed kan. | ||
(4 pts) '''Set''' {{kana|セット}} <ref group="note">Set is also called Storm / Arashi {{kana|アラシ}} in some | (4 pts) '''Set''' {{kana|セット}} <ref group="note">Set is also called Storm / Arashi {{kana|アラシ}} in some platforms.</ref> : Add four points for each collected set of gari (four identical tiles of gari). Can be stacked with gari. | ||
* Does not require the gari tiles to be called, e.g., a closed triplet of 5m + a called 5m will still count towards this yaku. | |||
(8 pts) '''Ron''' {{kana|ロン}}: Add eight points when winning by | (8 pts) '''Ron''' {{kana|ロン}}: Add eight points when winning by another player's discard. | ||
(10 / 20 pts) '''Crow''' / '''Karasu''' {{kana|カラス}}: | (10 / 20 pts) '''Crow''' / '''Karasu''' {{kana|カラス}}: Win a hand without drawing any gari tiles. Worth ten points when winning hand is opened, or twenty points when concealed. | ||
(20 pts) '''All Gari''' {{kana|全ガリ}}: Add twenty points when collecting all gari tiles. Can be stacked with gari. | (20 pts) '''All Gari''' {{kana|全ガリ}}: Add twenty points when collecting all gari tiles. Can be stacked with gari. | ||
== Notes == | == Notes == | ||
* Dora for manzu | * Dora for manzu: | ||
** A 1m indicator points to 9m; a 9m indicator points to 1m. | |||
** When 5m is the indicator, no tile is considered dora.<ref group="note">Outside of tenhou, there are two separate rulesets in use. One is <code>1m → 5m → 9m → 1m</code>; the other is <code>1m → 9m → 1m</code> while <code>5m → 5m</code>.</ref> | |||
* [[Riichi]] | * [[Riichi]] is worth 1 point. The riichi bet is also 1 point. | ||
* A single | * A single hand ends when there's no tile left before dora indicators. | ||
* | * The noten penalty of [[ryuukyoku]] is 20 points. | ||
* Gari can be claimed even in last turn. | * Gari can be claimed even in last turn. | ||
* [[Yakuman]] yaku cannot stack with other regular non-yakuman yaku as usual, though they can still stack with toutenkou-specified special yakus. Each yakuman is worth 20 points. | |||
* [[Yakuman]] | |||
== References == | == References == | ||