Tochuu ryuukyoku: Difference between revisions

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'''Tochuu ryuukyoku''' {{kana|途中流局}} is more commonly known as an '''abortive draw'''.  Specific game situations end a [[kyoku]] (hand session) without any player declaring a win or [[Ryuukyoku|drawing all tiles]] from the wall.  With the exception of kyuushuu kyuuhai, all cases of tochuu ryuukyoku are mandatory, when they occur.
[[Image:Kokushi_Suucha_Riichi.jpg|thumb|250px|right|A suucha riichi draw with real tiles, where a player was tenpai for [[kokushi musou]].]] '''Tochuu ryuukyoku''' {{kana|途中流局}}, or "abortive draw" in English, refers to the special cases where the [[kyoku|hand]] ends without a win and before [[Ryuukyoku|running out of tiles]] from the wall.


[[Image:Kokushi_Suucha_Riichi.jpg|thumb|250px|right|A suucha riichi draw with real tiles, where a player was tenpai for [[kokushi musou]].]]
==Process==
In the event of tochuu ryuukyoku, the current hand is instantly aborted.   Furthermore:
In the event of tochuu ryuukyoku, the current hand is instantly aborted. Furthermore:
* No points are exchanged between players; instead, the tiles are reshuffled again for the next hand.   
* No points are exchanged between players. Instead, the tiles are reshuffled again for the next hand.   
* The noten penalty per [[Ryuukyoku|exhaustive draw]] is not applied.
* The noten penalty per [[Ryuukyoku|exhaustive draw]] is not applied.
* [[Riichi]] declarers do not have to reveal their hand, except in face of four riichi.
* [[Riichi]] declarers do not have to reveal their hand, except in face of four riichi.
* All riichi bets remain on the table and can be won during the next hand.  
* All riichi bets remain on the table and can be won during the next hand.  
* As with an [[Ryuukyoku|exhaustive draw]], the [[honba]] count increases by one.   
* As with an [[Ryuukyoku|exhaustive draw]], the [[honba]] count increases by one.   
* Finally, the seat winds do not rotate for the next hand.
* The seat winds do not rotate for the next hand.


Essentially, play resumes as if the previous hand did not occur, except with the additional honba count.
Essentially, play resumes as if the previous hand did not occur, except with the additional honba count and previous riichi bets.
 
With the exception of kyuushu kyuuhai, all cases of tochuu ryuukyoku are mandatory when they occur.


== Suufon renda ==  
== Suufon renda ==  
[http://tenhou.net/0/?log=2015090309gm-0009-7447-fa717ec6&tw=0&ts=7 Example]
[http://tenhou.net/0/?log=2015090309gm-0009-7447-fa717ec6&tw=0&ts=7 Example]


'''Suufon renda''' {{kana|四風連打}} means "consecutively (ren) discarding (da) four (suu) winds (fon)". The hand is aborted when all four players' initial discards are the same wind type.  In other words, every player [[haipai|started with hands]] containing the same wind; and each chose to discard that same wind tile. At the moment North plays the fourth tile, the hand is reset; and all tiles are reshuffled immediately for the next deal.  Any [[Naki|tile calls]] would render this rule invalid as all four discards must be uninterrupted.  Even so, it would not have been possible, as three out of the four required wind type ends up in one player's hand anyways.
'''Suufon renda''' {{kana|四風連打}} means "consecutively (ren) discarding (da) four (suu) winds (fon)". When all four players' initial discards are the same wind type, suufon renda is triggered, and the hand is aborted.  In other words, each player must have [[haipai|started]] with a wind type and chose to discard it. A call for [[kan]] invalidates the abortive draw.


== Kyuushuu kyuuhai ==  
== Kyuushu kyuuhai ==  


[http://tenhou.net/0/?log=2014011202gm-0089-0000-c5a5f508&tw=0&ts=1 Example]
[http://tenhou.net/0/?log=2014011202gm-0089-0000-c5a5f508&tw=0&ts=1 Example]


'''Kyuushuu kyuuhai''' {{kana|九種九牌}}, literally means 9 (kyuu) kinds (shuu) of honor or terminal (kyuu) tiles (hai). If a player's 14-tile hand after the initial draw is composed of 9 different honor or terminal tiles, the player may announce this and reveal his hand to abort the deal. If any such tile is paired, then they are counted together as one, while invoking this rule.  This option is only available if no tile call has interrupted the initial turn earlier. Instead of calling kyuushuu kyuuhai, the player may play the hand normally, maybe aiming for [[kokushi musou]] or a terminal based yaku, such as [[chanta]].  This is the only case where the call for tochuu ryuukyoku is optional.
'''Kyuushu kyuuhai''' {{kana|九種九牌}} literally means 9 (kyuu) kinds (shu) of honor or terminal (kyuu) tiles (hai). It is essentially the game's invocation of the "[https://en.wikipedia.org/wiki/Mulligan_(games) Mulligan rule]".
 
When a player's 14-tile hand after the initial draw has 9 different types of honor/terminal tile, the player may announce this, reveal their hand, and invoke the abortive draw. If any [[naki|tile calls]] (inc. closed [[kan]]) have been made, then players can no longer declare kyuushu kyuuhai. Note that a pair of honor/terminal tiles counts as one "type" of tile.


== Suucha riichi ==
== Suucha riichi ==
[http://tenhou.net/0/?log=2014081419gm-0009-7447-b66ad799&tw=0&ts=6 Example]
[http://tenhou.net/0/?log=2014081419gm-0009-7447-b66ad799&tw=0&ts=6 Example]


'''Suucha riichi''' {{kana|四家立直}}, literally means "four players [[riichi]]", is declared when all four players have declared riichi successfully. If the riichi declaration tile of the fourth player is a winning tile and claimed as such (ron), then the fourth riichi is not considered successful.  The hand is not aborted and instead ends with the hand producing a winner, as usual.
'''Suucha riichi''' {{kana|四家立直}}, literally meaning "four players [[riichi]]", is declared when all four players have declared riichi successfully. Once the fourth player declares riichi, and the discarded tile is not won off of, the hand is ended immediately. If the fourth player's discarded tile deals in to another player, suucha riichi is not triggered, and the winning player(s) score like normal.


Of course, if the fourth riichi discard is not a winning tile, then the hand stops after that discard.  As required with riichi declarations, all players must reveal their [[tenpai]] hands. Players without tenpai hands are punished with a [[chombo]] for declaring riichi while noten.  If the hands are valid riichi calls, then the hand proceeds into the next hand, with an added [[honba]].
After suucha riichi, all players must reveal their hands. Players without tenpai hands are punished with a [[chombo]] for declaring riichi while noten.  If the hands are valid riichi calls, then the game proceeds like any other abortive draw.


== Suukaikan ==
== Suukaikan ==
[http://tenhou.net/0/?log=2014021417gm-0009-7447-00d6d80f&tw=3&ts=5 Example]
[http://tenhou.net/0/?log=2014021417gm-0009-7447-00d6d80f&tw=3&ts=5 Example]


'''Suukaikan''' {{kana|四開槓}}is declared when four [[kan|quads]] are formed by different players. The rule literally means open (kai) four (suu) kans. If all four quads are called by one player, play continues to give the player the opportunity to score the yakuman, [[suukantsu]]. No other players are allowed to declare kan from then on. If the four quads have been formed by more than one player, hand abortion after formation of the fourth quad depends on the rules.
'''Suukaikan''' {{kana|四開槓}} is declared when a combined total of four [[kan|quads]] are formed by different players. It is literally "open (kai) four (suu) kans", but the kans do not have to be "open" to trigger suukaikan. After the fourth kan is called, the hand is aborted:
* Most rules abort the hand when the following discard is not a winning tile.
* Some rules end the game before the [[rinshan]] draw happens. However, a player eligible for [[chankan]] can still win before the draw happens.


* Most rules abort the hand when the following discard is not a winning tile.
If all four quads are called by one player, play continues to give the player the opportunity to score the yakuman, [[suukantsu]].
* Some rules end the game already on declaration of the fourth quad. If the fourth quad is [[chankan|robbed]], the quad is not considered formed and ron is counted.
*In most rulesets, players are ''not'' allowed to call a fifth kan to invoke the abortive draw. Calling the fifth kan is simply not allowed.
* Some rules may allow the game to go on, as if all quads had been declared by a single player. Afterwards, two rule options are available:
*In a few rulesets, players can call a fifth kan to invoke an abortive draw. In this case, the hand ends before chankan and the rinshan draw happen.
** No one may call kan again
 
** The ''ura dora'' indicator tiles are used starting from the fifth kan, in this case, no ''ura dora'' is available.
Even if abortive draws are not used, players may only declare a total of four kans in one game. This is because there are only 4 tiles available for rinshan draws; a fifth kan would start drawing from the dora indicators.


==Sanchahou==
==Sanchahou==
[[Image:Sanchahou.jpg|thumb|right|250px|Sanchahou invoked on dora [[houtei]].]]
[http://tenhou.net/0/?log=2015041415gm-00a9-0000-6cda8438&ts=1&tw=1 Example]
[http://tenhou.net/0/?log=2015041415gm-00a9-0000-6cda8438&ts=1&tw=1 Example]


'''Sanchahou''' {{kana|三家和}}, literally means "three (san) players (cha) win (hou)". If three players call ''ron'' on the same discard by the fourth player, the hand is aborted and no player wins. However, variable rules may allow the use of the "Triple Ron", where the one unfortunate player pays points to all three hands.
'''Sanchahou''' {{kana|三家和}}, literally "three (san) players (cha) win (hou)", occurs when three players call ''ron'' on the same discard. When this happpens, the hand ends, and no points are paid. Some rules allow this "triple ron"; others use [[atamahane]] (so only one player gets points).


==Rule variations==
==Rule variations==
Any or all of the abortive draws may be subject to rule variations. Differences may point towards implementation and/or usage.  Some game settings do not use any of the abortive draws, to either increase the game difficulty or to limit time wasting.
Any or all of the abortive draws may be subject to rule variations. In many real life settings, abortive draws are not used, in order to avoid wasting time. Abortive draws may also be disabled in order to make the game harder.


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

Latest revision as of 08:54, 16 September 2024

A suucha riichi draw with real tiles, where a player was tenpai for kokushi musou.

Tochuu ryuukyoku 「途中流局」, or "abortive draw" in English, refers to the special cases where the hand ends without a win and before running out of tiles from the wall.

Process

In the event of tochuu ryuukyoku, the current hand is instantly aborted. Furthermore:

  • No points are exchanged between players. Instead, the tiles are reshuffled again for the next hand.
  • The noten penalty per exhaustive draw is not applied.
  • Riichi declarers do not have to reveal their hand, except in face of four riichi.
  • All riichi bets remain on the table and can be won during the next hand.
  • As with an exhaustive draw, the honba count increases by one.
  • The seat winds do not rotate for the next hand.

Essentially, play resumes as if the previous hand did not occur, except with the additional honba count and previous riichi bets.

With the exception of kyuushu kyuuhai, all cases of tochuu ryuukyoku are mandatory when they occur.

Suufon renda

Example

Suufon renda 「四風連打」 means "consecutively (ren) discarding (da) four (suu) winds (fon)". When all four players' initial discards are the same wind type, suufon renda is triggered, and the hand is aborted. In other words, each player must have started with a wind type and chose to discard it. A call for kan invalidates the abortive draw.

Kyuushu kyuuhai

Example

Kyuushu kyuuhai 「九種九牌」 literally means 9 (kyuu) kinds (shu) of honor or terminal (kyuu) tiles (hai). It is essentially the game's invocation of the "Mulligan rule".

When a player's 14-tile hand after the initial draw has 9 different types of honor/terminal tile, the player may announce this, reveal their hand, and invoke the abortive draw. If any tile calls (inc. closed kan) have been made, then players can no longer declare kyuushu kyuuhai. Note that a pair of honor/terminal tiles counts as one "type" of tile.

Suucha riichi

Example

Suucha riichi 「四家立直」, literally meaning "four players riichi", is declared when all four players have declared riichi successfully. Once the fourth player declares riichi, and the discarded tile is not won off of, the hand is ended immediately. If the fourth player's discarded tile deals in to another player, suucha riichi is not triggered, and the winning player(s) score like normal.

After suucha riichi, all players must reveal their hands. Players without tenpai hands are punished with a chombo for declaring riichi while noten. If the hands are valid riichi calls, then the game proceeds like any other abortive draw.

Suukaikan

Example

Suukaikan 「四開槓」 is declared when a combined total of four quads are formed by different players. It is literally "open (kai) four (suu) kans", but the kans do not have to be "open" to trigger suukaikan. After the fourth kan is called, the hand is aborted:

  • Most rules abort the hand when the following discard is not a winning tile.
  • Some rules end the game before the rinshan draw happens. However, a player eligible for chankan can still win before the draw happens.

If all four quads are called by one player, play continues to give the player the opportunity to score the yakuman, suukantsu.

  • In most rulesets, players are not allowed to call a fifth kan to invoke the abortive draw. Calling the fifth kan is simply not allowed.
  • In a few rulesets, players can call a fifth kan to invoke an abortive draw. In this case, the hand ends before chankan and the rinshan draw happen.

Even if abortive draws are not used, players may only declare a total of four kans in one game. This is because there are only 4 tiles available for rinshan draws; a fifth kan would start drawing from the dora indicators.

Sanchahou

Sanchahou invoked on dora houtei.

Example

Sanchahou 「三家和」, literally "three (san) players (cha) win (hou)", occurs when three players call ron on the same discard. When this happpens, the hand ends, and no points are paid. Some rules allow this "triple ron"; others use atamahane (so only one player gets points).

Rule variations

Any or all of the abortive draws may be subject to rule variations. In many real life settings, abortive draws are not used, in order to avoid wasting time. Abortive draws may also be disabled in order to make the game harder.

External links

Tochuu ryuukyoku in Japanese Wikipedia