Rules

Our Variant Rules

Every Japanese tournament, clubs, leagues and even parlors have their own set of rules. To make sure everybody share the same understanding of rules, we will be following the below two rules.

Please check with organiser which set of rules we will be playing with during your 1st session.

Adjusted Tenhou Rules

Atozuke
(Claim a winning tile that gives a yaku to a yakuless hand)
Yes Agari Yame
(Last dealer get to choose to end han-chan upon topping the game)
No
Kuitan
(Open Tanyao)
Yes Kuikae No
Aka Dora
(Red Dora)
3 Shanyu
(West Round)
No
Kazoe Yakuman
(Counted Yakuman)
No Nagashi Mangan
(Discards of terminals/honours till exhaustive draw)
Yes
Daburi Riichi
(Double Reach)
Yes Tochuu Ryuukyoku
(Mid-game draw)
Yes
Furiten Riichi
(Discard Foul Reach)
Yes Open Riichi
(Open Reach)
No
Multiple Ron
(Dealing into 2/3 players)
Yes Multiple Yakuman
(Score of >48,000)
Yes
Sekinin-barai
(Pao for Daisangen and Daisuushii ONLY)
Yes 7,700 = 8,000 or 11,600 = 12,000 No
Renhou
(Winning on a discard in the very first un-interrupted set of turns, before the player has had his first turn)
No Buttobi
(End of han-chan once a player goes <0)
No

Keishiki Tenpai Ari

Your hand is considered tenpai even if you are waiting for a 5th copy of the tile. For eg, tanki wait on a tile that you yourself have ponned.

End of game Riichi Deposits

All goes to 1st place.

Multiple Yakuman

Please not that multiple yakuman is only applicable for DIFFERENT yakuman achieved in 1 hand. For example, Suuankou Tanki Machi by its name, is double yakuman but its score remains at 32k but Suuankou with Tsuuiisou is counted as 64k.

Multiple Ron

Triple ron in Tenhou is considered a draw but most players think it doesn’t make sense. Since strategically speaking, players don’t really plan whether they wish to double or triple deal into players, we will stick with something that make more sense to everyone in name of fairness.

Revealing Kan Dora

Kan Dora will be revealed immediately after Ankan before discard. In case of Kakan or Daiminkan, Kan Dora will be revealed after discard.

Nagashi Mangan

Criteria

  • The hand reaches ryuukyoku i.e. no one wins a hand until only the dead wall is left.
  • All discards of the player are either terminal (1 or 9) or honour tiles.
  • The player does not have any discards being called by other players.
  • The player is allowed to declare riichi or ankan.
  • The player does not need to be in tenpai.

Payment

  • Similar to a mangan tsumo, oya will receive 4k from all other players, while non-oya will receive 4k from oya and 2k from the other players.
  • However, the player does not receive any additional rewards from honbas or riichi deposits.
  • Tenpai payments no longer occur.
  • If the event of MULTIPLE players completing Nagashi Mangan, repeat the payments as stated above.

Renchan

  • A player who completed Nagashi Mangan as oya does not renchan unless his hand is also in tenpai.
  • If oya is in tenpai, he is allowed to renchan after paying 4k for Nagashi Mangan.

Chombo

  • Chombo by any player will overwrite Nagashi Mangan, meaning only the chombo payments take place and not Nagashi Mangan.

World Riichi Championship Rules

You can download the rulebook here – http://ooyamaneko.net/download/mahjong/World_Riichi_Championship_Rules_2015.pdf

Atozuke
(Claim a winning tile that gives a yaku to a yakuless hand)
Yes Agari Yame
(Last dealer get to choose to end han-chan upon topping the game)
No
Kuitan
(Open Tanyao)
Yes Kuikae No
Aka Dora
(Red Dora)
No Shanyu
(West Round)
No
Kazoe Yakuman
(Counted Yakuman)
No Nagashi Mangan
(Discards of terminals/honours till exhaustive draw)
No
Daburi Riichi
(Double Reach)
Yes Tochuu Ryuukyoku
(Mid-game draw)
No
Furiten Riichi
(Discard Foul Reach)
Yes Open Riichi
(Open Reach)
No
Multiple Ron
(Dealing into 2/3 players)
No Multiple Yakuman
(Score of >48,000)
No
Sekinin-barai
(Pao for Daisangen and Daisuushii ONLY)
Yes 7,700 = 8,000 or 11,600 = 12,000 No
Renhou
(Winning on a discard in the very first un-interrupted set of turns, before the player has had his first turn)
5 Han Buttobi
(End of han-chan once a player goes <0)
No

Revealing Kan Dora

Kan Dora will be revealed immediately after any form of Kan.

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3 comments on “Rules

  1. I would like to ask, is there sekinin barai for yakuman?
    I would think no but I would like to clarify.
    Hmm

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