MahjongTime News

Changes to WSOM and Riichi Competition Scoring!

We have introduced some changes in our rules section for the progress for both WSoM and Riichi!
For WSoM, the rules are outlined below.
For example, previously a "Three Concealed Triplets" was scored as a 25 by Mahjong Time but now it is scored as a 30 under WSoM rules. Our development team is working hard to implement these important rule changes and we will send out an alert once they are completed! Here is a list of the specific rules and scoring changes that will be adopted:

There is a 5-point minimum limit for going out.

Concealed hand is re-defined and does not apply (add) to irregular hands (7 pairs and 13 Terminals).

Small Three Winds (MT = 25, WSoM = 30)

All Triplets (MT = 40, WSoM = 30)

Three Concealed Triplets (MT = 25, WSoM = 30)

Four Concealed Triplets (MT = 115, WSoM = 125)

Small Three Similar Triplets (MT = 25, WSoM = 30)

Win on Kong (MT = 15, WSoM = 10)

Robbing a Kong (MT = 15, WSoM = 10)

Blessing of Heaven (MT = 320, WSoM = 155)

Blessing of Earth (MT = 320, WSoM = 155)

Thirteen Terminals (MT = 320, WSoM = 160)

Seven Pairs (MT = 25, WSoM = 30)

For Riichi rules, we are following the lead of our partner organization, the European Mahjong Association (EMA). They have submitted some great rules and scoring changes.

You can Click here for the knowing current Riichi rules as listed by the EMA. Please review our table below for information on the new Riichi rules changes that we will be implementing:

	EMA Rules	Riichi Mahjong (future release)	JM(on live)
1.Points System	fan=yaku+red_fives+ dora+kan_dora+ura_dora minipoints	hans=yaku+ red_fives+dora+ kan_dora+ura_dora fus	hans+dora+ ura_dora+kan_dora fus
2.Minimum points for Mahjong	1 yaku	1 hans	1 hans
3.Red Fives	yes	yes	no
4.Minipoints calculation	if fan<5	if hans <5	always
5.Riichi Payment	1000 points	1000 points	0 points
6.Bonus markers for tied games or when East remains East.	yes	yes	no
7.All Simples	only concealed	only concealed	concealed/open sets
8.Pinfu	only concealed	only concealed	concealed/open sets
9.Bottom of the Sea	last tile, or the following discard	last tile, or the following discard	last tile
10.Little Three Dragons	2 yaku	2 hans	4 hans
11.Nagashi Mangan	yes	yes	no
12.Nine Gates	only concealed	only concealed	concealed/open sets
13.Blessing of Man	yes	yes	no
14.Little FourWinds	yes	yes	no
15.Big FourWinds	yes	yes	no
16.Four Winds	no	no	yes
17.Open Pinfu	yes	yes	no
18.Seven pairs (no further minipoints)	yes	yes	no
19.Uma bonus/penalty	yes	yes	no
20.No change Seat	if East winner, or Tenpai	if East winner, or Tenpai	if East winner or dead wall
21.Concealed Kong	two middle tiles face-down	two middle tiles face-down	two middle tiles face- up
22.Out From Start	no	no	yes
23.Blessing of Heaven	yes	yes	no
24.Blessing of Earth	yes	yes	no
25.Ready	A player is not allowed to declare riichi if there are less than four tiles left in the wall.	yes	-
26.Robbing concealed kong	A concealed kong cannot be robbed, except to win on Thirteen Orphans.	no	no
27.Players is Furiten. Declare valid Mahjong on Last Discard.	yes	yes	no