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== Special Yakus ==
== Special Yakus ==
'''Notes''': All of the followings are bonuses. A hand cannot be claimed with only those following yakus.
(1 pt) '''Oya''' {{kana|親}}: Add one point when winning as dealer.
(1 pt) '''Oya''' {{kana|親}}: Add one point when winning as dealer.


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(1 pt) '''Gari''' {{kana|ガリ}}: Add one point for each nukidora ({{#mjt:159m4z}}). For {{#mjt:0m}} it is also a red dora, so it actually worths 2 points.
(1 pt) '''Gari''' {{kana|ガリ}}: Add one point for each nukidora ({{#mjt:159m4z}}). For {{#mjt:0m}} it is also a red dora, so it actually worths 2 points.


(2 pts) '''Base point''' {{kana|バンバン}}: Add two points for each winning hand for no reason.
(2 pts) '''Base point''' / '''Banban''' {{kana|バンバン}}: Add two points for each winning hand for no reason.


(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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== Notes ==
== Notes ==
* As most of the common rules, dora is defined as the next tile of dora indicator. That been said, for manzu part, dora sequence is {{#mjt:1m}} {{#mjt:5m}} {{#mjt:9m}} {{#mjt:1m}}.
* Dora for manzu part is a bit weird. When indicator is {{#mjt:1m}}, dora is {{#mjt:9m}}; when indicator is {{#mjt:9m}}, dora is {{#mjt:1m}}; however when indicator is {{#mjt:5m}}, none of the tiles is dora. <ref group="note">In general, to determine dora for manzu tiles, there're two different ways in use. One is <code>1m → 5m → 9m → 1m</code>; the other is <code>1m → 9m → 1m</code> while <code>5m → 5m</code>.</ref>
* Gari tiles can be used in hand, and also can be discarded, but can only get Gari's point when it is claimed as a nukidora.
* Gari tiles can be used in hand, and also can be discarded, but can only get Gari's point when it is claimed as a nukidora.
* Set is still acquirable with gari tiles used in hand.
* Set is still acquirable with some gari tiles used in hand. They're not required to be all claimed as nukidora.
* [[Riichi]] values 1 point. Riichi bet is also 1 point.
* [[Riichi]] values 1 point. Riichi bet is also 1 point.
* A single round ends when there's no tile left before dora indicators.
* A single round ends when there's no tile left before dora indicators.
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* [[Rinshan Kaihou]] is available with rinshan tiles drawn from Gari.
* [[Rinshan Kaihou]] is available with rinshan tiles drawn from Gari.
* Crow / Karasu requires no any gari tiles both existing in hand, in discards and used as nukidoras.
* Crow / Karasu requires no any gari tiles both existing in hand, in discards and used as nukidoras.
* [[Yakuman]] yakus cannot stack with other regular yakus as usual, however they can still stack with special yakus. Each yakuman yaku values 20 points.
* [[Yakuman]] yakus cannot stack with other regular non-yakuman yakus as usual, though they can still stack with toutenkou-specified special yakus. Each yakuman yaku values 20 points.


== References ==
== References ==
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== External Links ==
== External Links ==
{{jpwiki|東天紅_(麻雀)}}
{{jpwiki|東天紅_(麻雀)}}
* Rule description of Tenhou's Toutenkou: http://blog.tenhou.net/article/186578700.html