Rules

Our Variant Rules

Every Japanese tournament, clubs, leagues and even parlors have their own set of rules. To make sure everybody share the same understanding of rules, we will be following the below rules.

We mainly follow the World Riichi Championship Rules with the exception of Aka-Dora. The only change in rule that we have is whether we play with aka-dora or not so please check with organiser during the first session.

World Riichi Championship Rules

Rules	Description	SgRiichi (Default)	World Riichi Championship (WRC)	Tenhou/M’aSoul/RiichiCity
Uma	The amount of points awarded based on rank position at end of the game, in thousands	+30 / +10 / -10 / -30	+15 / +5 / -5 / -15	+45 / +5 / -15 / -35
Aka Dora	Red dora	Yes	No	Yes
Kan Dora	New dora revealed after a Kan	Immediate	Immediate	Immediate for Closed Kan only
Buttobi	End of hanchan once a player goes negative	No	No	Yes
Shanyu	Enter West round when no player has more than 30k Points	No	No	Yes
Mid-Game Draws	9 Terminals/Honours, Four-players Riichi, Four consecutive round wind discard, Four kans	No	No	Yes
Atamahane	Nearest player win in event of multiple players claiming for a win	Yes	Yes	2 winners allowed, draw for 3 winners
Nagashi Mangan	Discards of terminals/honours till exhaustive draw	No	No	Yes
Renhou	Win on uninterrupted 1st round of discards	5 han	5 han	No
Agariyame	To end-chan when last dealer gets 1st after winning/tenpai on exhaustive draw	No	No	Yes
Kiriage Mangan	4 han 30 fu and 3 han 60 fu or more hands to be rounded up as Mangan	Yes	Yes	No
End Game Riichi Deposits	Unclaimed Riichi deposits at the end of hanchan	Confiscated	Confiscated	Awarded to top player
Sekinin-Barai (Pao)	Liability payment	Daisangen, Daisuushii, Suukantsu	Daisangen, Daisuushii, Suukantsu	Daisangen, Daisuushii
Chonbo Penalty	Penalty for Non-waiting Riichi, Invalid Kan	4k to all / Offline Penalty of 20k/30k	4k to all / Offline Penalty of 30k (Tournament)	N/A

World Riichi Championship’s rulebook can be download here.