| Riichi Competition Rules: | Overview | Gameplay | Scoring | Penalties & Errors | Resources |
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A minimum of one yaku is needed to call for mahjong. Emphasis is placed on concealed hands. After winning add up all the minipoints and yaku then convert the values using the charts below.
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Table of Contents
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Initial Points
As these rules are based on tournament play there are no initial starting points. If you are playing casually everyone can start arbitrarily with 25000 points.
Criteria
A minimum of one yaku is needed before going out. When there are five counters out (due to Dealer's consecutive wins or draws) a minimum of two yaku are needed to go out. Dora and red five tiles do not count towards the yaku minimum. The dealer usually pays more upon losing but on the same token receives more when winning.
- Win by a discarded tile: Discarder pays winner full score plus values for other players as well.
- Win by self-drawn tile: All player's pay the value of the winner's hand.
Outline
If you have less than five yaku in your hand you must add up any mini points and follow the values based on the charts below. The minipoints (fu) are then rounded up to the nearest multiple of 10. If you have five or more yaku in your hand you must use the limit hands chart below.
The winner of the hand will also collect any riichi bets on the table. If there is more than one winner, the player closest to the discard collects the riichi bets.
Scoring Table
Yaku Table
| Value | Hand | Japanese | Description | Pattern Type |
|---|---|---|---|---|
| 1 | Ready | Riichi | Waiting hand with declaration and 1000 point buy in. Hand must be concealed. | Special |
| 1 | One Shot | Iipatsu | Winning within the first uninterrupted go around after declaring riichi . | Special |
| 1 | Daburu Riichi | Declaring riichi within the first uninterrupted go around. | Special | |
| 1 | Fully Concealed Hand | Menzen tsumo | Winning on a self-drawn tile. Hand must be concealed. |
Going Out |
| 1 | All Simples | Tanyao chuu | Hand contains all simple tiles. Hand must be concealed.      |
Suit-Based |
| 1 | All Chows | Pinfu | All chows hand with valueless pairs. The hand must be completed on a chow with a two-sided wait. Hand must be concealed.         |
Chow-Based |
| 1 | Pure Double Chow | Iipeikou | Two identical chows. Hand must be concealed. |
Chow-Based |
| 1 | Mixed Triple Chow | San shoku doujun | Three chows of the same numerical sequence of different suits. +1 if concealed.    |
Chow-Based |
| 1 | Pure Straight | Itsu | Three chows of the numerical sequences from 1-9 of the same suit. +1 if concealed.   |
Chow-Based |
| 1 | Dragon Pung | Fanpai/yakuhai | A pung/kong of dragons. |
Terminals/Honors |
| 1 | Seat/Prevalent Wind | Fanpai/yakuhai | A pung/kong of seat or prevalent wind. |
Terminals/Honors |
| 1 | Outside Hand | Chanta | Hand contains terminals/honors and one terminal chow. + 1 if concealed.   |
Terminals/Honors |
| 1 | Out on a Replacement | Rinchan Kaihou | Winning after drawing a replacement tile. | Going Out |
| 1 | Robbing the Kong | Chan Kan | Winning on off a tile used to extend a kong. | Going Out |
| 1 | Last Tile Draw/Discard | Haitei/houtei | Winning on the very last tile or the following discard. | Going Out |
| 2 | Seven Pairs | Chii toitsu | Seven unique pairs. Hand must be concealed.   |
Special |
| 2 | Triple Pung | San shoku dokou | Three pungs of different suits. |
Pung-Based |
| 2 | Three Concealed Pungs | San ankou | Three concealed pungs/kongs. |
Pung-Based |
| 2 | Three Kongs | San kan tsu | Hand contains three kongs. |
Kong-Based |
| 2 | All Pungs | Toi-toi hou | Hand contains all pungs/kongs.  |
Pung-Based |
| 2 | Half Flush | Honitsu | Hand contains one suit and honor tiles. + 1 if concealed. |
Suit-Based |
| 2 | Little Three Dragons | Shou sangen | Two pungs/kongs and a pair of dragons.  |
Terminals/Honors |
| 2 | All Terminals and Honors | Honroutou | Hand contains all terminals or honors.  |
Terminals/Honors |
| 2 | Terminals in All Sets | Junchan taiyai | Hand contains sets with terminal tiles. Hand must contain one terminal chow. +1 if concealed.  |
Terminals/Honors |
| 3 | Twice Pure Double Chow | Ryan peikou | Two times two identical chows. Hand must be concealed. |
Chow-Based |
| 5 | Full Flush | Chinitsu | Hand contains one suit. +1 if concealed. |
Suit-Based |
| 5 | Nagashi Mangan | Only discarding terminal/honor tiles (none claimed). Game ends in a draw. | Special | |
| Yakuman | Thirteen Orphans | Koku shimusou | One of each honor/terminal and a pair of honors/terminals. +1 yakuman if 13-sided wait.   |
Special |
| Yakuman | Nine Gates | Chuuren pooto | 1112345678999 of one suit and a matching tile of the same suit. + 1 yakuman if 9-sided wait. |
Suit-Based |
| Yakuman | Blessing of Heaven | Tenho | East goes out on the initial draw. Hand must be concealed. | Going Out |
| Yakuman | Blessing of Earth | Chinho | Player goes out in the draw. Hand must be concealed. | Going Out |
| Yakuman | Blessing of Man | Renho | Player goes out on a discard in the first go around. Hand must be concealed. | Going Out |
| Yakuman | Four Concealed Pungs | Suu ankou | Four concealed pungs/kongs and a pair. +1 Yakuman for unique wait. |
Pung-Based |
| Yakuman | Four Kongs | Suu kan tsu | Hand contains four kongs and a pair. |
Kong-Based |
| Yakuman | All Green | Ryuu kan tsu | Hand consists of 2, 3, 4, 6, 8, of bamboo or Green Dragon tiles. |
Suit-Based |
| Yakuman | All Terminals | Chinrouto | Hand consists of all terminal pungs/kongs and a pair. |
Terminals/Honors |
| Yakuman | All Honors | Tsuu Iisou | Hand consists of all honor pungs/kongs and a pair. |
Terminals/Honors |
| Yakuman | Big Three Dragons | Dai sangen | Hand consists of three pungs/kongs of dragons. |
Terminals/Honors |
| Yakuman | Little Four Winds | Shoo suushii | Hand consists of three pungs/kong of winds and a pair of winds. |
Terminals/Honors |
| Double Yakuman | Big Four Winds | Dai suushii | Hand consists of four pungs/kongs of winds. |
Terminals/Honors |
Minipoints
| Minipoints for sets | Open | Concealed |
|---|---|---|
| Pung of simples | 2 | 4 |
| Pung of terminals/honors | 4 | 8 |
| Kong of simples | 8 | 16 |
| Kong of terminals/honors | 16 | 32 |
| When going out | |
|---|---|
| Pair of dragons | 2 |
| Pair of seat/prevalent wind | 2 |
| Edge, closed, single wait | 2 |
| Self-draw (not in case of pinfu) | 2 |
| Open pinfu | 2 |
| For winning | |
| Concealed hand | 30 |
| Seven pairs (no further minipoints) | 25 |
| Open hand and/or self-drawn | 20 |
Payment
Limit Hands
| Limit hands | ||||
|---|---|---|---|---|
| Hand | Fan | East | Others | Dealer |
| Mangan | 5 | 4000 | 2000 | 4000 |
| Haneman | 6-7 | 6000 | 3000 | 6000 |
| Baiman | 8-10 | 8000 | 4000 | 8000 |
| Sanbaiman | 11-12 | 12000 | 6000 | 12000 |
| Yakuman | 13+ | 16000 | 8000 | 16000 |
Example
Example 1
Consider the following example. East (東) round; South (南) position; Dora: . Ura-Dora: .
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| pair | waiting on 3-6-9 | concealed pung | self-drawn |
| Dora (x2) | 2 fan |
| Fully Concealed (menzen tsumo) | 1 fan |
| Full Straight (itsuu) | 2 fan |
| 5 fan | |
| Payment | 2000/4000 |
Since the value is 5 fan we can skip counting the minipoints (fu) and go directly to the limit hands table. A self-drawn 5 fan hand (mangan) receives 4000 from the dealer and 2000 from each non-dealer (total of 8000).
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