Title: International Online Riichi Mahjong Competition
Date: 5th Nov. 
Time: UTC 11:00 AM
Participants: 4 players per country
Ranking: Point counting will follow Tenhou rule. Ranking will be recorded for both personal and country.
Match list: Each table has only one player from one country in round 1~3. In round 4, table pairing will be set according to personal ranking. 
List of participating nations: 
Flag_of_Australia.svg.png AUS: Australia
Flag_of_Canada.svg.png CAN: Canada
Flag_of_Chinese_Taipei_for_Olympic_games.svg.png TPE: Chinese Taipei
Flag_of_France.svg.png FRA: France
23px-Flag_of_the_United_Kingdom.svg.png GBR: Great Britain
Flag_of_Hong_Kong.svg.png HKG: Hong Kong, China
Flag_of_Indonesia.svg.png INA: Indonesia
23px-Flag_of_Japan.svg.png JPN: Japan
Flag_of_the_People's_Republic_of_China.svg.png CHN: People's Republic of China
23px-Flag_of_Poland.svg.png POL: Poland
Flag_of_South_Korea.svg.png KOR: Republic of Korea
Flag_of_Russia.svg.png RUS: Russian Federation
Flag_of_Singapore.svg.png SGP: Singapore
Flag_of_Slovakia.svg.png SVK: Slovakia
Flag_of_Sweden.svg.png SWE: Sweden
Flag_of_the_United_States.svg.png USA: United States of  America
Flag_of_Vietnam.svg.png VIE: Vietnam

players: 4-players
rounds: hanchan
open tanyao: yes
aka dora: yes
speed: 5+10 seconds
show tsumokiri (if people discard their draw): no
shuugi ("chips"): none
extra rules: in use
extra rules:
nagashi mangan: yes
kiriage mangan: no
tobi (busting):  no
instant kan dora: no
normal dora: yes
kan dora: yes
ura dora: yes
kan ura dora: yes
4 winds abort: yes
4 kan abort: yes
4 riichi abort: yes
9 terminals abort: yes
triple ron abort: yes
headbump: yes
agariyame: no (dealer can't end game when he/she wins the last round)
tenpaiyame: no (dealer can't end game when he/she ends the round with tenpai the last round)
houra (winning) renchan : yes
tenpai renchan: yes
end game rounding: yes
ippatsu: yes
double table winds: no (east+west, south+north)

Please see following link and figure for more explanation about above figure in English.