the rules we use for tournaments but rather the ones we use for our own personal play.
Tournaments will always use the
| Basics |
|---|
| Atozuke | ari | You are allowed to win if your winning tile completes your only yaku |
| Kuikae | nashi | You are not allowd to switch tiles in complete shuntsu via chi |
| Ryanhan Shibari | ari | Starting from the 5th repeat round, you need at least 2 han from yaku to win |
| Renchan | tenpai | Dealer stays dealer if he was tenpai |
| Agari yame | ari | The dealer can decide to finish the hanchan on a renchan if he's last dealer and in first place |
| Furiten Riichi | ari | You are allowd to riichi when you're furiten |
| Temporary Furiten | turn | Temporary furiten persists until you've drawn and discarded - calls don't interrupt this |
| Call precedence | pon/kan before chi | If called at the same time, pon/kan go before chi; if there is a long time period between calls, the first caller gets the tile. |
| Toochu ryukyoku |
|---|
| Kyuushu kyuuhai | ari | You can repeat the hand if you have nine different yaochuuhai in your starting hand, after your first draw (calls interrupt this) |
| Suucha riichi | nashi | The hand does not get drawn if there are four riichis on the table and nobody won off the final riichi discard |
| Suukaikan | nashi | The hand does not get drawn if there are four kans and nobody wins of the discard after the kan, unless the kans are from the same person |
| Suufon renda | nashi | The hand does not get drawn if the same four winds get discarded during the first turn |
| Sanchahou | nashi | In case of three rons on the same tile, the loser has to pay all three winners |
| Dora |
|---|
| Akadora | nashi | No red fives |
| Uradora | nashi | No extra dora after winning with riichi |
| Kandora | nashi | No extra dora after kan |
| Kanuradora | nashi | No extra dora below kandora |
| Yaku |
|---|
| Kuitan | ari | Open tanyao is allowed |
| Ippatsu | nashi | No extra yaku for winning the turn after you declared riichi |
| Daburu Riichi | ari | Extra one han yaku for declaring riichi during the first turn (interrupted by calls) |
| Open Riichi | ari, wait only, no yakuman | When declaring riichi, you can show your wait to everyone for one extra han; no yakuman when dealt into |
| Nagashi Mangan | ari | If the round is drawn, you only discarded yaochuuhai and nobody called from you, then you win with a Mangan hand |
| Haitei rinshan | nashi | If you kan the penultimate tile and then tsumo off the kan draw, it's only rinshan kaihou, not haitei |
| Daisharin | nashi | No special yakuman for 22334455667788 in one suit |
| Paarenchan | nashi | No special yakuman for winning eight times in a row |
| Hatsu in Ryuuiisou | optional | You can have hatsu in your ryuuiisou, but you don't have to |
| Renhou | mangan | Renhou (ron during first turn) is at least mangan, not yakuman |
| Kokushi ankan ron | ari | You can ron a closed kan iff you are tenpai for kokushi musou |
| Kazoe yakuman | ari | If you have 13 or more han, your hand is considered yakuman |
| Double yakuman | nashi | There are no double yakuman |
| Combined yakuman | nashi | Yakuman do not stack - if you have two yakuman in your hand, it's still only counted as one |
| Pao |
|---|
| Daisangen/Daisuushi pao | ari | If you deal into a pon of the last dragon or wind and the others are already visible, you are liable for at least half the payment |
| Suukantsu pao | nashi | No such rule for suukantsu |
| Daiminkan pao | nashi | No pao for rinshan kaihou |
| Honba on pao ron | pao pays | The person who is responsible for the pao payment pays any points due to honba |
| Scoring |
|---|
| Kiriage Mangan | ari | 4han30 and 3han60 are mangan |
| Chombo payment | 20k after scoring | If there's a chombo, 20k points are payed after completing the tables scoring (including uma/oka) |
| Start score | 25000 | Everybody starts with 25k points |
| Goal score | 30000 | The point baseline is 30k (see below) |
| Tobi | negative | The game is aborted if somebody falls below zero points |
| Shaaba | ari | If nobody has at least 30k points at the end of the south round, the hanchan continues in the west round until somebody reaches 30k points |
| Shared placings | ari | It's possible for two people to have the same place |
| Leftover riibo | lost | Any leftover riichi sticks are lost if the hanchan ends on a draw |
| Score rounding | Tenhou | Scores are rounded to the nearest thousand and then the difference from 30k is calculated; the first place gets the positive sum of the points of the other places |
| Oka | 5000 | There is a 5000 oka, meaning the winner gets 15k points extra |
| Uma | 30000/10000 | First place gets 30k, second 10k, third -10k, fourth -30k |
Chombos are awarded for noten riichi or declaring a wrong win and opening the hand.
Dead hand is awarded if at any time a player has too few or too many tiles in his or her hand.
Players with a dead hand may not pon/kan/chi and are never tenpai.
For 3 players, the same rules as for 4 players apply, with the following changes:
Start score is 30000 and goal score is 35000.
The uma is 20000/0/-20000.
All man tiles except for one and nine are sorted out.