If you have info about the missing fields in red, please contact me – see very bottom of this page.
|Kuikae penalty||—||—||?||?||?||?||—||—||?||—||comp.||?||dead||?||1k||Kuikae penalty|
|Start score||30k||0||30k||30k||25k||30k||30k||?||30k||?||25k||25k||30k||29k||25k||Start score|
|Goal score||30k||0||30k||30k||30k||30k||30k||?||30k||?||30k||30k||25k||29k||30k||Goal score|
|Tobi (bankrupt)||—||—||—||—||—||?||?||?||?||—||negat.||—||—||negat.||negat.||Tobi (bankrupt)|
|Shaaba (west rnd.)||—||—||—||—||—||?||?||?||?||?||ari||—||?||—||ari||Shaaba (west rnd.)|
|Leftover riibo||lost||share||lost||lost||?||?||?||lost||?||?||tiebr.||?||tiebr.||back||share||Leftover riibo|
|Shared placings||ari||ari||ari||?||?||?||?||?||?||?||—||?||—||?||ari||Shared placings|
|Score rounding||divide||—||divide||?||divide||divide||divide||?||divide||?||234||?||r? div||divide||—||Score rounding|
|Ryanhan shibari||—||ari||—||—||—||—||—||—||—||—||—||—||—||—||ari||Ryanhan shibari|
|Honba value||100||100||100||100||100||?||?||?||?||?||100||?||?||—||100||Honba value|
|Agari yame||—||—||—||—||ari||—||—||?||ari||?||ari||ari||ari||ari||ari||Agari yame|
|Abortive draw||—||ari||ari||ari||—||—||—||—||—||?||ari||—||—||ari||ari||Abortive draw|
|Double ron||—||Rback||—||—||—||—||—||?||—||—||R 1st||—||—||—||check||Double ron|
|Triple ron||ata.h.||ari||abort||abort||ata.h.||ata.h.||ata.h.||?||ata.h.||?||abort||?||ata.h.||abort||abort||Triple ron|
|Furiten riichi||ari||ari||ari||ari||?||?||?||ari||ari||?||ari||ari||ari||ari||ari||Furiten riichi|
|Temp. furiten||turn||call||turn||turn||?||?||?||?||?||?||turn||?||?||turn||turn||Temp. furiten|
|Call precedence||pon||pon||first||first||?||?||?||?||pon||?||pon C||?||first||pon||pon||Call precedence|
|Kiriage mangan||ari||—||—||ari||ari||ari||ari||—||ari||ari||—||ari||—||ari||—||Kiriage mangan|
|Daburu riichi||ari||ari||ari||ari||?||ari||—||—||ari||—||ari||?||ari||ari||ari||Daburu riichi|
|Open riichi||—||—||—||—||?||—||—||?||—||—||—||?||—||ari||ari||Open riichi|
|Nagashi mangan||—||KW||—||W||—||—||—||?||—||—||B||?||DW||ari||W||Nagashi mangan|
|Haitei rinshan||—||ari||—||—||?||—||—||?||?||?||—||?||ari||ari||—||Haitei rinshan|
|Renhou||5 han||yak.||mang.||mang.||—||—||—||—||4 han||—||—||?||yak.||mang.||mang.||Renhou|
|Kokushi ankan ron||ari||ari||ari||ari||?||—||—||—||—||?||—||?||?||?||ari||Kokushi ankan ron|
|Hatsu in ryuuiisou||opt.||opt.||requi.||opt.||opt.||opt.||opt.||?||?||opt.||opt.||opt.||opt.||?||opt.||Hatsu in ryuuiisou|
|Kazoe yakuman||—||ari||—||—||—||—||—||?||—||baim.||ari||—||ari||ari||ari||Kazoe yakuman|
|Double yakuman||—||D||—||—||?||—||—||?||—||—||—||DSK9||—||—||DSK9||Double yakuman|
|Comb. yakuman||—||—||—||—||?||?||?||?||—||—||ari||ari||ari||?||ari||Comb. yakuman|
|DaiSG/DaiSS pao||ari||ari||ari||ari||—||—||—||ari||ari||?||ari||ari||ari||—||ari||DaiSG/DaiSS pao|
|Suukantsu pao||—||—||ari||ari||—||—||—||—||ari||?||—||ari||ari||—||ari||Suukantsu pao|
|Daiminkan pao||—||—||—||ari||—||—||—||—||—||—||—||—||—||—||ari||Daiminkan pao|
|Honba on pao ron||ron||ron*||pao||pao||—||—||—||—||?||?||ron||?||?||—||ron||Honba on pao ron|
|Rinshan fu||2 fu||2 fu||?||?||?||?||?||?||2 fu||?||2 fu||?||?||?||0 fu||Rinshan fu|
|Double wind pair||4 fu||4 fu||4 fu||4 fu||?||?||?||?||2 fu||?||?||2 fu||?||?||4 fu||Double wind pair|
|False ron, unrev.||chbo.||dead||?||?||?||?||?||?||?||?||—||dead||dead||?||chbo.||False ron, unrev.|
|Wall toppling||6c||6c||?||?||?||?||?||?||?||?||—||?||?||?||1k 6c||Wall toppling|
|Dead w. toppling||1d 6c||1d 6c||?||?||?||?||?||?||?||?||—||?||?||?||1k 6c||Dead w. toppling|
|Chombo penalty||20k E||mang.||20k E||20k E||40k E||40k E||16k E||3×3k||?||20k O||—||12k||10k E||?||mang.||Chombo penalty|
|Name of organization or ruleset||Official rulebook|
|WoRR||Word Riichi Rules for the tourney in France, 2014.||[PDF] English|
|Ema2||European Mahjong Association Riichi Competition Rules from 2012||[PDF] English|
|JpmlA||Japan Professional Mahjong League (JPML) ruleset A.||(tr) English||Japanese|
|JpmlB||Japan Professional Mahjong League (JPML) ruleset B|
|NPM||Nihon Pro Mahjong (NPM), also called Kyoukai||(tr) English||[PDF] Japanese|
|Skoui||Saikouisen, the oldest Japanese professional league||(tr) English||Japanese|
|SkouC||Saikouisen Classic||(tr) English||Japanese|
|MuMa||Mu Mahjong||(tr) English||Japanese|
|RmuA||Real Mahjong Unit (RMU) ruleset A.||(tr) English||Japanese|
|101||Ruleset of 101, another Japanese league||(tr) English||Japanese|
|Tenho||Tenhou.net, a popluar internet game site||(tr) English||Japanese|
|Skyos||Saikyousen, a tournament in Japan run by Takeshobo.||(tr) English||Japanese|
|Korea||Korean Mahjong League (KML)||[PDF] English||[PDF] Japanese|
|Uspml||United States Professional Mahjong League (USPML)||English|
|Montr||Club Riichi de Montreal, Canada|
(tr) denotes an unofficial machine translation of the official Japanese rules text.
Allow the 1-han yaku tanyao (all simples) to be awarded to an open hand.
Allow the hand to win even if there exists no yaku that is satisfied with all wait tiles. Atodzuke nashi, also called sakidzuke ari, requires all winning possibilities to satisfy at least one same yaku. Sakidzuke requires some
Allow a player to call pon or chii on a tile, then afterwards discard the same tile, or a tile which would have completed the two revealed tiles at the other end of the sequence (switching chii). If such discards are forbidden, a penalty must be chosen for players who violate it, see kuikae penalty below.
What happens if a player calls a tile and makes an illegal discard afterwards due to the kuikae rule above?
Each player has this many points at the start of a hanchan.
Used at the end of a hanchan for the next two rules: If oka is used, first place gets a point jackpot, called the oka, of (goal − start score) from each player. If shaaba is used, the game continues into the west round if no player has reached the goal score after the south round.
End the hanchan prematurely if a player has less than 0 points at the end of a hand.
If nobody has reached the goal score at the end of south 4th hand, then the game continues into the west round. The game immediately stops after any hand during the west round in which a player reaches the goal score. The game never continues into the north round.
If the last hand of the hanchan is a draw, there may be leftover riichi sticks on the table. This rule decides what happens with them.
If two players have the same raw score before any rounding, some rules have them share their placings, splitting equally any associated poins from uma and oka. Other rulesets use the common tiebreaker of seat wind during the very first game of the hanchan.
Some rulesets divide the raw scores by 1,000 to calculate hanchan scores. This rule specifies whether that's done, and how the points are rounded before division. Even if players end up with the same rounded score, placing has been determined with the unrounded score, thus determining uma and oka.
Jackpot for getting first. All players pay this amount into the jackpot, then first place takes it at the end of the hanchan. These points are exchanged in addition to the uma. It's uncommon to award oka in rulesets that allow for shared placings, see above.
This is a placing bonus for first and second place after a hanchan. First place receives (larger amount × 1,000) points from forth place, and second place receives (lower amount × 1,000) from third place. These points are exchanged in addition to the oka.
Use some red fives in place of normal fives as extra dora.
Winning riichi declarers may flip the tile underneath the first dora indicator and treat that as another dora indicator.
After declaring a kantsu, another dora indicator is flipped in the dead wall. All four players can benefit from this.
Winning riichi declarers may flip the tile underneath each kan dora indicator and treat that as another dora indicator.
Impose a two-han minimum at five or more honba (number of table counters). The two han must both come from yaku.
For each honba (tsumiboukaten, bonus stick) on the table, winning hands increase in value by 3 × the given amount; either distributed evenly among all opponents upon tsumo, or all paid by the discarder upon ron. There is a related rule, honba on pao ron, which decides who has to pay the honba in case of liability payment (sekinin barai, the pao rule).
Allow the dealer to end the hanchan prematurely if he wins the south 4th hand and ends up in first place, or if that hand becomes an exhaustive draw and the dealer ends up first.
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.
Score two winning declarations at the same time. If East is among the winners, a honba is added and the round is repeated. There are different rules for who gets the riichi sticks on the table.
Score three winning declarations at the same time.
Allow players to declare riichi while they are fuiten due to their own earlier discards.
If a non-riichi player ignores a winning tile, he becomes temporarily furiten. There are different rules to when this status wears off.
If several players call chii, pon, or ron on the same tile, this rule decides who will get the tile. Kan calls are treated like pon calls.
Score 4 han, 30 fu as a mangan, as well as 3 han, 60 fu. The exact values for these hands are 7,700 points on a non-dealer ron, split as 2,000 and 3,900 on a non-dealer tsumo, and 11,600 points on a dealer ron, split as 3,900 for all on a dealer tsumo.
Keep track of player's scores during a hanchan.
Score an additional han for winning a riichi declaration within the next go-around.
Score riichi as 2 han yaku instead of 1 han if called within the first uninterrupted go-around of a hand.
Allow players to declare open riichi instead of a normal riichi. Open riichi is worth 2 han instead of the normal 1 han. The declarer must reveal his hand at the same time as he pays the bet of 1,000 points.
Score a mangan upon exhaustive draw for having discarding only yaochuuhai during the entire hand, with none of the yaochuuhai having been called by other players, and without having called any tiles oneself. If this is allowed, there are additional rules decisions necessary: Does it count as a win, or merely as replacement of the noten penalty? Are concealed kantsu allowed?
Score the 1-han yaku haitei raoyue for winning with the last tile from the live wall, or score the 1-han yaku houtei raoyui for winning on a discard while the live wall is empty.
When a kantsu is declared with exactly one tile left in the live wall, that tile, called the haiteihai, is appended to the dead wall and never drawn. This rule makes the replacement tile the haiteihai, so winning with that tile scores both rinshan kaihou (winning after kan) and haitei raoyue (winning with the last tile).
Score a self-drawn win within a hand's first uninterrupted go-around as a yakuman.
This is a yaku for winning on a discard before the winner's first turn in an uninterrupted go-around.
Allow a ron declaration against ankan (concelaed kantsu) with a kokushi musou (thirteen orphans) tenpai, waiting on only the kanned tile. It's always legal to interrupt a shominkan (added kantsu) declaration or to override a daiminkan (kantsu formed with a discard) call with ron, even if ankan ron is not allowed.
Require hatsu (green dragon) in a hand to score it as ryuu iisou (all green). All of 2, 3, 4, 6, 8-sou are optional in any ruleset.
Score the concealed single-suit hand 2-2-3-3-4-4-5-5-6-6-7-7-8-8 as a yakuman.
Score the eighth consecutive win of the same dealer as a yakuman.
Score a hand with 13 han or more as a yakuman.
Score each of the listed patterns as a double yakuman.
Score more than one yakuman if multiple yakuman are achieved by the same hand.
Impose a liability payment on the player who has dealt the third ponned dragon tile, or the fourth ponned wind tile, if the caller wins with daisangen (big three dragons) or daisuushii (big four winds) later.
Impose a liability payment on the player who has dealt the fourth kanned tile, if the caller wins with suukantsu (four kantsu) later.
After forming a daiminkan (kan declaration on a discard with three concealed identical tiles), score a win with rinshan kaihou (winning on the replacement tile after a kan call) as a ron against the discarder of the called tile. Fu and han are always calculated normally for a tsumo, even if the rule has the hand be paid by only one player.
When one player is liable (i.e., pao, or sekinin barai) for a hand and another player deals into the hand, they share the hand's value fifty-fifty. The bonus payment for honba is not shared fifty-fifty, but paid by only one player specified by this rule.
Award a hand winning with the rinshanpai (kan replacement tile) the usual 2 fu for winning with a self-drawn tile.
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.
What is the penalty for declaring a false ron, but immediately noticing the mistake and not revealing any tiles?
What is the penalty for toppling tiles from the live wall?
What is the penalty for toppling tiles from the dead wall?
The chombo penalty is paid for severe rules infractions. The current hand is aborted and replayed at the same honba.
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