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Riichi rules around the world

This page is aimed at riichi mahjong rules specialists. If you're new to the game, you'd better read the detailed rules instead.
Those data come from the official rules shown on their organizations' website (see at the bottom of the page), and from various personal communications.
Thanks to everyone who helped me. A special thanks to Barticle for his Japanese Mahjong Guide.
If you spot any mistake and/or have reliable data to fill the holes, please report them to me via the contact page of this website.

Scroll down to select the rules to display.
Hover the titles and fields marked with ♦ to get more info.
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Open tanyao✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔ ♦✔✔✔kuitan食い断 / 喰いタン
After-attaching♦✔✔✔✔✔✔✔✔✔✔✔??????✔✔✔✔✔✔✔✔✔atozuke先付け
Swap-calling    ✖  ✖✖✖✔   ✖✖✖ ✖✖✖ kuikae喰い替え
 Same tile♦✖✖✖✖???✖✔????????????✔✖✖?????????✖???????????? genbutsu 現物牌
 Chow shifting♦✖✖✔✖??????✔????????????✔✖✖?????????✖???????????? suji スジ牌
Starting points30k030k30k25k30k30k30k30k25k??????30k29k25k30k25k25k25k???25k25kmochiten持ち点
Goal30k030k30k30k30k30k30k30k30k??????30k29k30k30k30k30k30k???30k30kgenten原点
Oka000020k000020k??????000020k20k20k???20k20kokaオカ
Uma15/515/5 ♦15/530/1030/1012/415/515/50/012/4???20/1030/150/015/520/1030/1020/10?????????umaウマ / 順位点
 In case of tiedividedividedividedividedivide??????dividedivide???divide???bump???N/A???bumpbumpbumpbump???bump dōten 同点
Remaining riichi bets♦lostfinal winnerlostlost?????????lostlostlostfinal winnerfinal winnerfinal winnertake backfinal winnerlostfinal winnerfinal winnerfinal winner?????????hanchan shūryōtoki no riichibō半荘終了時のリーチ棒
Continuationtenpaitenpaitenpaitenpaitenpaitenpaiagaritenpaitenpaitenpaitenpaiagari ♦tenpai ♦tenpaitenpaitenpaitenpaitenpaitenpaiagarirenchan連荘 / レンチャン
Continuance points♦3x1003x1003x1003x1003x1003x1003x1003x1003x1003x100003x100???3x1003x1003x1003x1003x100?????? ♦tsumibō積み棒
Noten penalty30003000300030003000300003000300030003000030003000??????300030003000??????3000noten batsufuノーテン罰符
Dora                      doraドラ
 Ura dora✔✔✖✔✔✔✖✔✖✔✖✖✔✔✔✔✔✔✔✔✔??? uradora 裏ドラ
 Kan dora✔✔✖✔✔✔✖✔✖✔✖✖✔✔✔✔✔✔✔✔?????? kandora 槓ドラ
 Kan ura dora✔✔✖✔✔✔✖✔✖✔✖✖✔✔✔✔✔✔✔✔?????? kanuradora 槓表ドラ
 Red fives✖✖✖✖✖✖✖✖✖✔✖✖✖✖✖✖✔✖✔✔???✔ akadora 赤ドラ
Precedence♦ron → firstron → ponron → firstron → firstron → ponron → ponron → ponfirstfirstfirst??????♦ron → firstron → pon0.5 sec.0.5 sec.ron → ponfirstron → ponron → ponfirst???♦yūsen優先
Double ron♦bump✔bumpbumpbumpbumpbumpbumpbumpbumpbump???♦firstbump✔♦bump✔first✔✔✔✔ryan cha hōニ家和
Triple ron♦bump✔cancelcancelbumpbumpbumpbumpbumpbumpbump???♦firstcancelcancelbumpcancelfirstcancel✔cancel✔san cha hō三家和
 
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Temporary furiten duration♦player's discardplayer's discardplayer's discardplayer's discard???????????????????????????player's discardplayer's discardplayer's discardplayer's discard???player's discard?????????dojun'nai furiten no sonzoku同巡内フリテンの存続
Two-han minimum♦✖✖✖✖✖✖✖✖✖✖✖✖✖✖✔✖✖✖✖?????????ryanhan shibari二飜縛り
Abortive draw                      tochû ryūkyoku途中流局
 Nine term. / honours✖✖✔✔✖✖✖✖✖✖✖✖✖✔✔✖✔✖✔✔✔✖ kyū shu kyū hai 九種九牌
 Four winds✖✖✔✔✖✖✖✖✖✖✖✖✖✖✔✖✔✖✔✔✔✖ sū fon renda 四風連打
 Four kongs✖✖✔✔✖✖✖✖✖✖✖✖✖✔✔✖✔✖✔✔✔✖ sū kai kan 四開槓
 Four riichi✖✖✔✔✖✖✖✖✖✖✖✖✖✔✔✖✔✖✔✖✖✖ sū cha riichi 四家立直
 Triple ron✖✖✔✔✖✖✖✖✖✖✖✖✖✔✔✖✔✖✔✖✔✖ san cha hō 三家和
Nb kongs max4444?????????4444∞???44444444??? kan no kaisū seigenカンの回数制限
Continuation when abortion♦N/AN/A??????N/AN/AN/AN/AN/AN/AN/AN/AN/A??????N/A✔N/A✔???✖N/Atochû ryūkyoku no bāi wa renchan途中流局の場合は連荘
Liability payment                      sekinin harai / pao責任払い / 包
 Big Three Dragons✔✔✔✔✖✖✖✖✖✖✔✖✔✖✔✔✔✔✔✔✔✔ daisangen 大三元
 Big Four Winds✔✔✔✔✖✖✖✖✖✖✔✖✔✖✔✔✔✔✔✔✔✔ daisūshi 大四喜
 Four Kongs✖✖✔✔✖✖✖✖✖✖✖✖✔✖✔✔✖✔✖✔✔✔ sūkantsu 四槓子
 After a Kong♦✖✖✖✖✖✖✖✖✖✖?????????✖✔✔✖✖???✖✖??? rinshan kaihō 嶺上開花
Continuance payement♦discarderdiscarderdiscarderdiscarderN/AN/AN/AN/AN/AN/A???N/A???N/Afeederfeederfeeder???feeder?????????tsumibō no futan積み棒の負担
Apply if other yakuman✔✔??????N/AN/AN/AN/AN/AN/A???N/A???N/A??????✔✔✔?????????fukugō yakuman o fukumu複合役満を含む
Agari yame♦✖✖✖✖✖✖✖✖✖✖✖???1st✔???✖✔1st1st1st1;2;31;2agari yameアガリ止め
Tenpai yame♦✖✖✖✖✖✖✖✖✖✖✖???✖??????✖✔✖1st✖1;2;3✖tenpai yameテンパイ止め
 Automatic♦N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A???✖??????N/A✔???✔???1st1st ōtoma jūryō オートマ終了
Bankrupt♦✖✖✖✖✖✖✖✖✖✖???✖✖✔< 0< 0< 0✖< 0= 0< 0< 0tobi / hakoware飛び / 箱割れ
 Riichi: 1000pts min♦✖✖✖✖✖✖✖✖✖✖???✖✖??????✔✔✖✔???✔✔ 1000ten o kiru to riichi 1000点を切るとリーチ
Max points♦✖✖✖✖✖✖✖✖✖✖???✖✖???✖✖✖✖✖???60k✖toppu uchikiriトップ打ち切り
West round♦✖✖✖✖✖✖✖✖✖✖✖✖✖✖✔✖✖✖✔?????????shānyū西入
 Sudden death♦N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A✔♦N/AN/AN/A✔????????? sadon desu サドンデス
Yakitori✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖???✖yakitori焼き鳥
Wareme✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖ ♦✖✖wareme割れ目 / ワレメ
Winning: +2 han✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔bazoro no ni han場ゾロの2飜
 
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Mangan rounding up♦✔✖✖✔✔✔✖✔✔✔✖✔✖✖✖✖✔✔✖?????????kiriage mangan切り上げ満貫
Counted yakuman♦✖✖✖✖✖✖✖✖✖✖???✖♦✔✔✔♦✖✔✖✔✔??????kazoe yakuman数え役満
Yakuman stacking✖✖✖✖✔✖✖✖✖✖???✖✔✖✔✖✖✔✔✔??????fukugō yakuman複合役満 / 役満重複
Skyrocketing✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖✖aotenjō青天井
Furiten riichi♦✔✔✔✔✔✔✔✔✔✔✔✖✔✔✔✔✔✔✔???✔???furiten riichiフリテンリーチ
Riichi: allow concealed kong✔✔✔✔✔✔✔✔✔✔✖✖✔✔??????✔✔✔✔✔???riichi ato no ankanリーチ後の暗槓
 On any tile✖✖✖✖✖✖✖✖✖✖N/AN/A✖✖?????????✖???✖?????? nandemo pai なんでも牌
 If changes wait✖✖✖✖???✖✖✖✖✖N/AN/A✖✖??????✖✖✖✖✖??? machi ga kawaru 待ちが変わる
 If changes hand structure✖✖✖✖???✖✖✖✖✖N/AN/A✖✖??????✔✖✔✖?????? tehai kōsei ga kawaru 手牌構成が変わる
 If changes yaku✔✔✖✖✔✔✔✔✔✔N/AN/A✔✔??????✔✔✔✔?????? teyaku ga kawaru 役が変わる
Thirteen Orphans: allow to rob a concealed kong✔✔✔✔✖✖✖✖✖✖✖✖??????✔✔✖✖✖✔✔???kokushi chankan国士無双・搶槓
All Green: must have hatsu✖✖✔✖✖✖✖????????????✖✖✖✖✖✖✖✔✖✖???ryūiisō hatsu緑一色・發牌
Last Tile Draw after a kong♦✖✖✖✖✖✖✖??????????????????✔✖✖✖✖✖???✖???haitei rinshan海底摸月・嶺上開花
Nagashi mangan: count as a win♦N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A✔✔✔✔✖N/A✖???✔✔nagashi mangan wa agari yaku koite流し満貫はアガリ役扱いで
Shape tenpai♦✔✔✔✔✔??????✔✔✔✔???✔?????????✔✔✔✔✔✔keishiki tenpai形式テンパイ / 形聴
 5th tile in own's hand♦✖✖✖✖✖??????✖✖✖??????????????????✖✖✖✖✖??? gomaime o matsu tenpai 5枚目を待つ聴牌
 
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Riichi1111111111???111111111??????riichi立直
Ippatsu1+11+1✕1+11+11+1✕1+1✕1+1✕✕1+11+11+11+11+11+11+11+1??????ippatsu一発
Double Riichi1+11+122222222???✕221+11+12222??????daburu riichiダブル立直
Open Riichi✕✕✕✕✕✕✕✕✕✕???✕✕2✕♦✕✕✕✕✕??????open riichiオープン立直
Fully Concealed Hand1111111111???111111111??????menzen tsumo門前清自摸
All Simples1111111111???111111111??????tanyao断么九
Pinfu1111111111???111111111??????pinfu平和
Yakuhai1111111111???✕11111111??????yakuhai役牌
Double Wind1+11+122222222???✕1+11+11+11+1221+12??????renfonpai連風牌
Pure Double Chow1111111111???111111111??????iipeikō一盃口
Twice Pure Double Chow3333333333???1+133333333??????ryanpeikō二盃口
Robbing a Kong1111111111???111111111??????chankan搶槓
After a Kong1111111111???111111111??????rinshan kaihō嶺上開花
Last tile Draw1111111111???✕11111111??????haitei海底摸月
Last tile Claim1111111111???✕11111111??????hōtei川底撈魚
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Seven Pairs2222222222???1♦22222221♦??????chiitoitsu七対子
All Pungs2222222222???222222222??????toitoi対々和
All Terminals and Honours2+22+22+22+22+22+22+22+22+22+2???2+22+22+22+22+22+22+22+22+2??????honrōtō混老頭
Little Three Dragons2+22+22+22+22+22+22+22+22+22+2???2+22+22+22+22+22+22+22+22+2??????shōsangen小三元
Pure Straight2 /12 /12 /12 /12 /12 /12 /12 /12 /12 /1???2 /12 /12 /12 /12 /12 /12 /12 /12 /1??????ikkitsūkan / ittsū一気通貫
Mixed Triple Chow2 /12 /12 /12 /12 /12 /12 /12 /12 /12 /1???2 /12 /12 /12 /12 /12 /12 /12 /12 /1??????sanshoku dōjun三色同順
Triple Pung2222222222???222222222??????sanshoku dōkō三色同刻
Three Concealed Pungs2222222222???222222222??????san'ankō三暗刻
Three Kongs2222222222???222222222??????sankantsu三槓子
Outside Hand2 /12 /12 /12 /12 /12 /12 /12 /12 /12 /1???2 /12 /12 /12 /12 /12 /12 /12 /12 /1??????chanta全帯ヤオ
Terminals in All Sets3 /23 /23 /23 /23 /23 /23 /23 /23 /23 /2???3 /23 /23 /23 /23 /23 /23 /23 /23 /2??????junchan純全帯
Half Flush3 /23 /23 /23 /23 /23 /23 /23 /23 /23 /2???23 /23 /23 /23 /23 /23 /23 /23 /2??????hon'itsu混一色
Full Flush6 /56 /56 /56 /56 /56 /56 /56 /56 /56 /5???56 /56 /56 /56 /56 /56 /56 /56 /5??????chin'itsu清一色
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Nagashi Mangan✕✕✕✕✕✕✕✕✕✕✕✕M5MMM✕M5♦MMnagashi mangan流し満貫
Blessing of ManMMMM✕✕✕✕✕✕✕✕Y5MMM✕✕Y8???renhō人和
Blessing of HeavenYYYYYYYYYY???✕Y13YYYYYY??????tenhō天和
Blessing of EarthYYYYYYYYYY???✕Y13YYYYYY??????chihō地和
Thirteen OrphansYYYYYYYYYY???YY13YYYYYY??????kokushi musō国士無双
Nine GatesYYYYYYYYYY???YY13YYYYYY??????chūrenpōto九蓮宝燈
Four Concealed PungsYYYYYYYYYY???YY13YYYYYY??????sūankou四暗刻
Four KongsYYYYYYYYYY???YY13YYYYYY??????sūkantsu四槓子
All GreenYYYYYYYYYY???YY13YYYYYY??????ryūiisō緑一色
All TerminalsYYYYYYYYYY???YY13YYYYYY??????chinrōtō清老頭
All HonoursYYYYYYYYYY???YY13YYYYYY??????tsūiisō字一色
Big Three DragonsYYYYYYYYYY???YY13YYYYYY??????daisangen大三元
Little Four WindsYYYYYYYYYY???YY✕YYYYYY??????shōsūshi小四喜
Big Four WindsYYYYYYYYYYYYY132YYYYY2Y??????daisūshi大四喜
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Thirteen Orphans on 13 waitsYYYYYYYYYY???YY132YYYYY2Y??????kokushimusō jūsan men machi国士無双 十三面待ち
Nine Gates on 9 waitsYYYYYYYYYY???YY132YYYYY2Y??????chūrenpōtō kyū men machi九蓮宝燈 九面待ち
Four Concealed Pungs on the pairYYYYYYYYYY???YY132YYYYY2Y??????sūankō tanki machi四暗刻 卖騎待ち
Pairs 2 to 8 in the same suit✕✕✕✕✕✕✕✕✕✕???✕Y✕YY✕✕✕✕??????daisharin大車輪
13 isolated tiles✕✕✕✕✕✕✕✕✕✕???✕✕✕M✕✕✕✕✕??????shiisan pūtā十三不塔
8 consecutive wins✕✕✕✕✕✕✕✕✕✕✕✕✕✕Y♦✕✕✕✕✕??????paarenchan八連荘
 
 WRCEMAJPML AJPML BNPMSai.Sai. C.RMU ARMU BRMU CMu101KMLUSPMLCRMCRM
NARO
CAMSkyo.Ten.M.JANZOOMARC. 
Winning20 fu20 fu20 fu20 fu20 fu20 fu20 fu??????????????????20 fu???20 fu20 fu???20 fu?????????fūtei副底
 Seven pairs♦25 fu25 fu25 fu25 fu25 fu25 fu25 fu25 fu25 fu25 fu???50 fu♦???25 fu???25 fu25 fu???25 fu50 fu♦???25 fu chiitoitsu no fu 七対子の符
Winning on a discard on a concealed hand10 fu10 fu10 fu10 fu10 fu10 fu10 fu??????????????????10 fu???10 fu10 fu???10 fu?????????menzen ron門前ロン
Open pinfu♦2 fu2 fu10 fu10 fu10 fu10 fu10 fu??????????????????2 fu???0 fu2~10 fu???2~10 fu?????????kui pinfu喰い平和
Winning by self-draw2 fu2 fu2 fu2 fu2 fu2 fu2 fu??????????????????2 fu???2 fu2 fu???2 fu???2 fu???tsumo tenツモ符
 Replacement tile♦✔✔✖✖✔✔✔2 fu2 fu2 fu????????????0 fu✔✖2 fu✔???✖???rinshan tsumo ten 嶺上ツモ符
 Pinfu yaku♦✖✖✖✖✖✖✖??????????????????✖???✖✖???✖✖??????pinfu tsumo ten 平和ツモ符
Edge / Closed / Pair wait2 fu2 fu ♦ ♦2 fu2 fu2 fu??????????????????2 fu???2 fu2 fu ♦2 fu?????????penchan•kanchan•tanki辺張・嵌張・単騎
Pair0; 00; 00; 00; 00; 00; 00; 0??????????????????0; 0???0; 00; 0???0; 0?????????toitsu対ツ
 Single wind / dragon.2 fu2 fu2 fu2 fu2 fu2 fu2 fu2 fu2 fu2 fu?????????2 fu???2 fu2 fu???2 fu???2 fu??? iifanpai no toitsu 一翻牌の対ツ
 Double wind4 fu4 fu4 fu4 fu2 fu2 fu2 fu2 fu2 fu2 fu???2 fu??????4 fu???4 fu2 fu4 fu???2 fu??? renfonpai no toitsu 連風牌の対ツ
Melded chow0; 00; 00; 00; 00; 00; 00; 0??????????????????0; 0???0; 00; 0???0; 0?????????minjun明ジュンツ
Concealed chow0; 00; 00; 00; 00; 00; 00; 0??????????????????0; 0???0; 00; 0???0; 0?????????anjun暗ジュンツ
Melded pung2; 42; 42; 42; 42; 42; 42; 4??????????????????2; 4???2; 42; 4???2; 4?????????minkō明コーツ
Concealed pung4; 84; 84; 84; 84; 84; 84; 8??????????????????4; 8???4; 84; 8???4; 8?????????ankô暗コーツ
Melded kong8; 168; 168; 168; 168; 168; 168; 16??????????????????8; 16???8; 168; 16???8; 16?????????minkan明カン
Concealed kong16; 3216; 3216; 3216; 3216; 3216; 3216; 32??????????????????16; 32???16; 3216; 32???16; 32?????????ankan暗カン

Legend

♦Hover to get more info.
✔Yes / Rulepoint applied.
✖No / Rulepoint not applied.
N/ANot applicable.
???Missing data. Please contact me if you have reliable info.
16; 3216 fu for a group of simples tiles (2-8).
32 fu for a group of terminals (1, 9, Honours).
22 han (cumulative with other yaku and dora).
2 /12 han on closed hand, 1 han on open hand.
2+22 han, plus 2 han because it always includes another yaku.
Or scores twice a lower version of the yaku.
MMangan, not cumulative.
YYakuman.
2YDouble yakuman.

Organisations list

[zz]World Riichi Championshipリーチ麻雀世界選手権 Championship2013
[eu]European Mahjong AssociationEMA♦403 membersMulti-national orga.2005♦
Japan Professional Mahjong League日本プロ麻雀連盟629 membersProfessional league1981
Nihon Pro Mahjong日本プロ麻雀協会295 membersProfessional league2001
Saikouisen最高位戦274 membersProfessional league1976
Real Mahjong UnitRMU33 membersProfessional league2007
Mahjong Union (Mu Mahjong)µ! 麻将連合53 membersProfessional league1997
101101競技規定23 membersProfessional league1982
[kr]Korean Mahjong League한국마작연맹은 National federation 
[us]United States Professional Mahjong LeagueUSPML National federation 
[ca]Club Riichi de MontréalCRM Club2013
[ar]Club Argentino de Mahjong RiichiCAM♦50 membersClub2007
Saikyōsen最強戦 Championship 
Tenhou天鳳 Online game 
Maru-JanMaru-Jan Online game 
ZOOZOO Parlour2001
Marchaoマーチャオ Parlour1998