[vc_row inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” parallax=”true” bg_video=”” class=”” style=”” bg_image=”5″][vc_column fade_animation_offset=”45px” width=”1/1″][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade=”true” fade_animation=”in” fade_animation_offset=”45px” width=”1/1″ id=”” class=”” style=””][custom_headline level=”h3″ looks_like=”h3″ id=”” class=”” style=””]Riichi Scoring[/custom_headline][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]EMA Riichi Mahjong Scoring
Scoring[/custom_headline][text_output]As soon as a player has achieved a mahjong hand and gone out, play stops and the winner’s hand is scored.
The calculation of the score and payment between the players in riichi is quite involved. It is documented in full below, but since it is done automatically by the mahjong software, you do not need to know all the details to begin play. Since you need at least one yaku to go out, the best place to start is to learn some of the simpler scoring patterns, and try to achieve them in play. Later you can come back here to get a deeper understanding of how the score is calculated.
Scoring of a hand in riichi is done in two steps:
- The base score is calculated. This score is mainly based on the points received for going mahjong plus points for the pons and kans in your hand.
- The base score is then doubled a number of times depending on the scoring pattern the hand matches and the number of dora tiles included in the hand.
After the score has been calcuated, payment is done to the winner. In case of a tsumo, each player pays the score to the winner, but if the winner goes out on a discard, the discarding player pays for all the other players.[/text_output][/vc_column_inner][/vc_row_inner][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade=”true” fade_animation=”in” fade_animation_offset=”45px” width=”1/1″ id=”” class=”” style=””][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]Calculating the Base Score[/custom_headline][text_output]The first step in calculating the hand score, is to sum up the base points of the hand. These points consist first and foremost of points awarded for going mahjong. The amount of points awarded for going mahjong depends on how the mahjong was achieved according to the table below:[/text_output][text_output]
| Mahjong Type | Points |
|---|---|
| Closed Ron | 30 |
| Seven pairs | 25 |
| Other | 20 |
[/text_output][text_output]To the mahjong score, points are added for each pon and kan in the hand:
| Meld | Open | Concealed |
|---|---|---|
| Pon, Simples | 2 | 4 |
| Pon, Terminals/Honors | 4 | 8 |
| Kan, Simples | 8 | 16 |
| Kan, Terminals/Honors | 16 | 32 |
[/text_output][text_output]Lastly, additional points are added according to the following table:
| Types | Points |
|---|---|
| Pair of dragons | 2 |
| Pair of seat wind | 2 |
| Pair of prevalent wind | 2 |
| Winning on an edge, closed or single wait | 2 |
| Winning on self-draw | 2 |
| Open Pinfu | 2 |
[/text_output][text_output]If the final tile can be added to different sets, the software will choose the most advantageous way to do this, e.g., sometimes it is better to forsake the 2 points for an edge-wait, in order to get a pinfu hand .
After all of the above points has been added, the result is rounded up to the nearest even 10.[/text_output][/vc_column_inner][/vc_row_inner][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade_animation_offset=”45px” width=”1/1″][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]Fans[/custom_headline][/vc_column_inner][/vc_row_inner][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade=”true” fade_animation=”in-from-left” fade_animation_offset=”45px” width=”1/2″ id=”” class=”” style=””][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]Scoring Patterns[/custom_headline][text_output]Each scoring pattern is rated with a number of yakus depending on how difficult it is to achieve, as noted in the table below. For each yaku of a scoring pattern, you are awarded one fan. You need to get at least one yaku from a scoring pattern to go mahjong.[/text_output][/vc_column_inner][vc_column_inner fade=”true” fade_animation=”in-from-right” fade_animation_offset=”45px” width=”1/2″ id=”” class=”” style=””][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]Dora[/custom_headline][text_output]Each dora, kan dor and ura dora in the hand gives an extra fan. If there are more than one copy of the same dora indicator, you will be awarded a fan for each of the dora indicators, for each occurrence of the indicated tile in your hand, e.g., if the dora indicator is bamboo 4 and an additional bamboo 4 shows up as a kan dora, and you have a pon in bamboo 5, you will get 6 fans.
If the number of fans is smaller than five, the base pointed is doubled by the number of fans plus two extra ones, e.g., if you have achieved a scoring pattern valued as one yaku, you will double the result three times, i.e., multiply by eight. The result may never exceed 2000 points.[/text_output][/vc_column_inner][/vc_row_inner][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade=”true” fade_animation=”in” fade_animation_offset=”45px” width=”1/1″ id=”” class=”” style=””][text_output]If the number of fans is five or larger, the hand is a limit hand and the base score is not used. Instead the score is taken from the following table:
| Fans | Name | Points |
|---|---|---|
| 5 | Mangan | 2000 |
| 6-7 | Haneman | 3000 |
| 8-10 | Baiman | 4000 |
| 11-12 | Sanbaiman | 6000 |
| 13+ | Yakuman | 8000 |
If you achieve 13 or more fans or have a hand that matches one of the special yakuman scoring patterns. The exact number of fans are no longer of interest. There are also special hands listed below that directly gives you a yakuman score.[/text_output][/vc_column_inner][/vc_row_inner][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade=”true” fade_animation=”in” fade_animation_offset=”45px” width=”1/1″ id=”” class=”” style=””][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]List of Yaku patterns[/custom_headline][text_output]
| Name | Open | Conc. | Description |
|---|---|---|---|
| Riichi | – | 1 | Going out with mahjong after having declared riichi (see ????). One extra yaku is awarded if you go out within the next uninterrupted go-around, inluding your next draw from the wall (Ippatsu). One extra yaku is awarded if riichi was declared in the very first uninterrupted go-around (Daburu riichi). |
| Fully Concealed Hand (Menzen Tsumo) |
– | 1 | Going out on self-draw with a concealed hand. |
| All simples (Tanyaou Chuu) |
0 | 1 | A concealed hand consisting only of suit tiles 2-8. |
| Pinfu | – | 1 | A hand that gives no basepoints beside those awarded for going out. The hand must consist of four chiis and a pair which is not in dragons, seat wind or prevalent wind, and the hand must be won on a two-sided wait. |
| Pure Double Chii (Iipeikou) |
– | 1 | Two chiis of the same value and suit. |
| Mixed Triple Chii (San Shoku Doujun) |
1 | 2 | Three chiis of the same value, with one in each suit. |
| Pure Straight (Itsu) |
1 | 2 | Three consecutive chiis (1-9) in the same suit. |
| Dragon Pon (Fanpai/Yakuhai) |
1 | 1 | A pon or kan in dragons |
| Seat Wind (Fanpai/Yakuhai) |
1 | 1 | A pon or kan in the players wind. |
| Prevalent Wind (Fanpai/Yakuhai) |
1 | 1 | A pon or kan in the prevalent wind. |
| Outside Hand (Chanta) |
1 | 2 | A hand where all sets contain a terminal or honor tile, and at least one of the sets is a chii. |
| After a Kan (Rinchan Kaihou) |
1 | 1 | Going out on a replacement tile for a kan. |
| Robbing a Kan (Chan Kan) |
1 | 1 | Going out by robbing a kan (see ????) |
| Bottom of the Sea (Haitei) |
1 | 1 | Going out on the last tile of the live wall, or the discard thereafter. |
| Seven Pairs (Chii Toitsu) |
– | 2 | Seven Pairs (Chii Toitsu) – 2 A hand consisting of seven distinct pairs (i.e. a kong cannot be counted as two pairs, hidden or not). Note that this is one of the two special hands that don’t follow the standard 4 sets plus 1 pair formula. It is also special in that you are awarded 25 points for going mahjong with a seven-pairs hand. |
| Triple Pon (San Shoku Dokou) |
2 | 2 | One pon or kan in each of the three suits, all having the same number. |
| Three Concealed Pons (San Ankou) |
2 | 2 | Three concealed pons or kans. |
| All Pons (Toi-toi hou) |
2 | 2 | A hand with four pons/kans and one pair. |
| Half Flush (Honitsu) |
2 | 3 | A hand with tiles from only one suit plus honor tiles. |
| Little Three Dragons (Shou Sangen) |
4 | 4 | Two pons/kans of dragons plus one pair of dragons. (No extra yakus are scored for the dragon pons individually.) |
| All Terminals & Honors (Honroutou) |
2 | 2 | A hand consisting of only terminals and honors. |
| Terminals in All Sets (Junchan Taiyai) |
2 | 3 | A hand with at least one chii and where all sets and the pair contains terminals. |
| Twice Pure Double Chiis (Ryan Peikou) |
– | 3 | Two pair of chiis, where each pair consists of two identical chiis. |
| Full flush (Chinitsu) |
5 | 6 | A hand with tile from only one suit and no honor tiles. |
[/text_output][/vc_column_inner][/vc_row_inner][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade=”true” fade_animation=”in” fade_animation_offset=”45px” width=”1/1″ id=”” class=”” style=””][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]List of Yakuman patterns[/custom_headline][text_output]
| Name | Description |
|---|---|
| Thirteen Orphans (Koku Shimusou) |
One of each honor tile and terminal plus a fourteenth tile forming a pair with one of those tiles. |
| Nine Gates (Chuuren Pooto) |
A hand consisting of the tiles 1112345678999 in one suit plus one extra tile in the same suit. |
| Blessing of Heaven (Tenho) |
East wins on the initial hand. |
| Blessing of Earth (Chiho) |
A hand won on self draw in the first go-around. |
| Blessing of Man (Renho) |
A hand won on discard in the first go-around. |
| Four Concealed Pungs (Suu Ankou) |
Four concealed pons or kans. |
| Four Kans (Suu Kan Tsu) |
Four kans. |
| All Green (Ryuu Iisou) |
A hand consisting of only green tiles, i.e., green dragons and bamboo 2, 3, 4, 6 and 8. |
| All Terminals (Chinrouto) |
A hand consisting of only terminal tiles. |
| All Honors (Tsuu Iisou) |
A hand consisting of only honor tiles. |
| Big Three Dragons (Dai Sangen) |
A pon or kan in each of the three dragons. |
| Little Four Winds (Shou Suushi) |
A pon or kan in three of the winds and a pair in the fourth wind. |
| Big Four Winds (Dai Suushii) |
A pon or kan in each of the four winds. |
[/text_output][/vc_column_inner][/vc_row_inner][vc_row_inner inner_container=”true” no_margin=”true” padding_top=”0px” padding_bottom=”0px” bg_video=”” class=”” style=””][vc_column_inner fade=”true” fade_animation=”in-from-bottom” fade_animation_offset=”45px” width=”1/1″ id=”” class=”” style=””][custom_headline level=”h4″ looks_like=”h4″ id=”” class=”” style=””]Payment[/custom_headline][text_output]The final score calculated in the previous section serves as a base payment for the other players. In case of a tsumo each player pays this amount to the winner. East is treated slightly different, and will pay double the score if loosing, or receive double the score from each of the other players if he or she is winning. This means that the winning player of a four-player game normally receives four times the score (two times from east, and one time from each of the two other players), but if east is winning, he or she gets six times the score (two times the score from each of the other players).
If the winner goes out on ron, the discarding player pays for all players, i.e., six times the score if east is winning, or four times the score if another player is winning in a four-player game.
Sometimes it can happen that more than one player goes out on the same discard. In that case the discarding player will settle the payment separately with the winners, and pay the full amount to each of them.
All payments that are made are rounded up to the nearest 100. The rounding is done after all fans have been applied, e.g., if west wins with tsumo and the score is 240, east will pay 500 points and the other two players will pay 300 points.[/text_output][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row]