Rule variations: Difference between revisions

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* Ari – Atozuke: Allow determination of yaku after determining the winning tile.
* Ari – Atozuke: Allow determination of yaku after determining the winning tile.
* Nashi – Sakizuke: Require a fixed yaku no matter how the hand wins.
* Nashi – Sakizuke: Require a fixed yaku no matter how the hand wins.
==Chombo==
{{main|Chombo}}
===Wall toppling===
What is the penalty for toppling tiles from the live wall?
* 6c – If six or more are toppled, then chombo is applied..
* Comp – This is a computer game. The rules infraction cannot occur.
===Dead w. toppling===
What is the penalty for toppling tiles from the dead wall?
* Ld6c – If you topple at least one tile from the dead wall, you get a dead hand. If six or more are toppled, then chombo is applied.
* Comp – This is a computer game. The rules infraction cannot occur.


==Dora==
==Dora==
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Winning riichi declarers may flip the tile underneath each kan dora indicator and treat that as another dora indicator.
Winning riichi declarers may flip the tile underneath each kan dora indicator and treat that as another dora indicator.
==Fu==
Counting fu may have some variation.  A hand with four groups and a pair might have a double wind pair, by which the wind pair is both the round wind and the seat wind. This rule decides how many fu such a double wind pair is worth.
* Ari - The pair counts as 4 fu: 2 from the wind, and 2 from the wind round.
* Nashi - The pair only counts for 2 fu.


==Kuikae==
==Kuikae==
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* Noten - The hand is declared as noten at [[ryuukyoku]].
* Noten - The hand is declared as noten at [[ryuukyoku]].
* Kan noten - The hand is declared as noten at [[ryuukyoku]], if all of a player's waits are used for one's own kan.  The hand is declared as tenpai for all other cases.
* Kan noten - The hand is declared as noten at [[ryuukyoku]], if all of a player's waits are used for one's own kan.  The hand is declared as tenpai for all other cases.
==Tochuu ryuukoku==
{{main|Tochuu ryuukoku}}
Abort a hand and repeat it at the next honba (number of table counters) in case of nine terminals and honors, same wind discards, four riichi declarations, or four kantsu declarations. Some rules abort the hand upon a triple ron; that is not covered by this rule, instead see triple ron.
* Ari – Abort and reshuffle in these situations.
* Nashi – Do not recognize any of these abortive criteria. Play every hand until a winning declaration or exhaustive draw. Do not allow a fifth kan declaration nonetheless.


==Renchan==
==Renchan==
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* Turn – The player's next own discard ends temporary furiten. If the turn is skipped due to other players' pon calls, temporarily furiten is retained.
* Turn – The player's next own discard ends temporary furiten. If the turn is skipped due to other players' pon calls, temporarily furiten is retained.
* Call – The players next own discard ends temporary furiten, but also any player's call of [[Naki|chii, pon, or kan]], even for a concealed [[Kan|kantsu]], ends temporary furiten.
* Call – The players next own discard ends temporary furiten, but also any player's call of [[Naki|chii, pon, or kan]], even for a concealed [[Kan|kantsu]], ends temporary furiten.
==Tochuu ryuukoku==
{{main|Tochuu ryuukoku}}
Abort a hand and repeat it at the next honba (number of table counters) in case of nine terminals and honors, same wind discards, four riichi declarations, or four kantsu declarations. Some rules abort the hand upon a triple ron; that is not covered by this rule, instead see triple ron.
* Ari – Abort and reshuffle in these situations.
* Nashi – Do not recognize any of these abortive criteria. Play every hand until a winning declaration or exhaustive draw. Do not allow a fifth kan declaration nonetheless.


==Call precedence==
==Call precedence==
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* Ari – Score the hand as a ron if won before the next discard.
* Ari – Score the hand as a ron if won before the next discard.
* Nashi – Score the hand as a tsumo.
* Nashi – Score the hand as a tsumo.
==Double wind pair==
A hand with four groups and a pair might have a double wind pair, i.e., a pair of winds that are both the round wind and the seat wind. This rule decides how many fu such a double wind pair is worth.
==Chombo==
{{main|Chombo}}
===Wall toppling===
What is the penalty for toppling tiles from the live wall?
* 6c – If six or more are toppled, then chombo is applied..
* Comp – This is a computer game. The rules infraction cannot occur.
===Dead w. toppling===
What is the penalty for toppling tiles from the dead wall?
* Ld6c – If you topple at least one tile from the dead wall, you get a dead hand. If six or more are toppled, then chombo is applied.
* Comp – This is a computer game. The rules infraction cannot occur.


== External links ==
== External links ==
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