Maajanbu Aachen
Sou-no-Tori Open
Dear Riichi enthusiasts,

As in the previous years, we would like to invite everyone to the Sou-no-Tori Open (formerly Aachen Riichi Open) on August 10th and 11th 2019. We are excited to this year hold the Sou-no-Tori Open as the German championship tournament. It will be held at the location of the first Aachen Riichi Open tournaments:

Katholische Hochschulgemeinde Aachen
Pontstraße 72
52062 Aachen

Sign up is currently closed. The tournament fee will be 50 EUR (45 EUR for DMJL members), which should be paid until July 15th to

Recipient: Marcus Völker
IBAN: DE75 1203 0000 1019 5808 18
Reference: [Name(s)] - Mahjong Aachen 2019

Lunch on saturday and sunday as well as snacks, fruit and drinks between rounds at the venue are included in the fee. Bus connections to the venue can be found at (sadly only in German). The closest stop to the venue is Driescher Gässchen, which is served by about ten different lines.

The tentative schedule is as follows:
From To
Saturday 8:45 9:30 Registration
9:30 9:45 Opening Ceremony
9:45 11:15 Round 1
11:30 13:00 Round 2
13:15 14:15 Lunch Break
14:30 16:00 Round 3
16:15 17:45 Round 4
18:00 19:30 Round 5
Sunday 8:30 10:00 Round 6
10:15 11:45 Round 7
12:00 13:00 Lunch Break
13:15 14:45 Round 8
15:00 15:30 Award Ceremony
The tournament is limited to 60 participants. With the registration, the participants agree to the publication of photos showing them during the tournament on the internet or other media.

Non-playing head referee will be Marcus Völker. Other (playing or non-playing) referees will be announced at the tournament.

The EMA observer will be determined at a later date.

We would be delighted to meet you at social play on Friday, starting at 6 o'clock in the Chico Mendes (Pontstraße 74-76, 52062 Aachen), which is next door to the venue.

Please direct any inquiries to
The following table lists the currently registered participants.
Currently, we have 40 registered players representing 8 different countries, resulting in a tentative rating of 2.5
Last update: 2019-07-17

Name EMA-Number Nationality Paid
1 Vojtěch Trmal 22000001 Czech Republic NO
2 Martin Diviš 22000003 Czech Republic NO
3 Chris De Roock 02010038 Belgium YES
4 Jos Dermout 02010039 Belgium YES
5 Gerda van Oorschot 08010003 The NetherlandsYES
6 Marco Rappe 05100161 Germany NO
7 Tine Weckhuyzen 02010043 Belgium NO
8 Manuel Schlich 05100166 Germany YES
9 Ilka Stummeyer 05100072 Germany YES
10 Stefanie Kammer 05100155 Germany NO
11 Michael van der Sluijs 08010734 The NetherlandsNO
12 Rene Khezam 08010435 The NetherlandsNO
13 Thai Chung 05100170 Germany NO
14 Pieter Potmeer 08010436 The Netherlands NO
15 Jaap Croeze 08010026 The Netherlands YES
16 Marianne Croeze 08010025 The Netherlands YES
17 Pia Ledwig 05100160 Germany NO
18 Lena Weinguny 01000053 Austria YES
19 Jonas Frings 05100169 Germany NO
20 Jinbi Jin 08010584 The Netherlands NO
21 Menno Deij - van Rijswijk 08010730 The Netherlands YES
22 Rudi Kopmanis 02010025 Belgium YES
23 Piti Phanpanich 02010056 Belgium YES
24 Sven Mamaril - Germany YES
25 Pierre Beinstingel 02010055 Belgium YES
26 Michael Thiessen - Germany YES
27 Julien Fouques 04160081 France YES
28 Nico Linnemann - Germany YES
29 Kai Böse - Germany YES
30 Cedric Aguerre 04090080 France YES
31 Timur Hahn 05100153 Germany YES
32 Jens Smikalla 05100128 Germany YES
33 Nathan Germeau 02010057 Belgium YES
34 Marta Binkowska 19000067 Poland YES
35 Jakub Bacic 19000066 Poland YES
36 Jan Karl Wilhelm - Germany YES
37 Reylly Brands 08010735 The Netherlands NO
38 Fränk Tobias 05100167 Luxembourg YES
39 Alexander Schuler 05100132 Germany YES
40 Patric Steinke 05100129 Germany NO
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We are a small group of players in Aachen, Germany.
At the moment, we usually play once a week on Mondays, starting at 18:00.

Anybody is welcome to join us, simply write us an email at!
The following table summarises our house rules. Note that these are NOT the rules we use for tournaments but rather the ones we use for our own personal play. Tournaments will always use the current iteration of the EMA rules.

AtozukeariYou are allowed to win if your winning tile completes your only yaku
KuikaenashiYou are not allowd to switch tiles in complete shuntsu via chi
Ryanhan ShibariariStarting from the 5th repeat round, you need at least 2 han from yaku to win
RenchantenpaiDealer stays dealer if he was tenpai
Agari yameariThe dealer can decide to finish the hanchan on a renchan if he's last dealer and in first place
Furiten RiichiariYou are allowd to riichi when you're furiten
Temporary FuritenturnTemporary furiten persists until you've drawn and discarded - calls don't interrupt this
Call precedencepon/kan before chiIf 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 kyuuhaiariYou can repeat the hand if you have nine different yaochuuhai in your starting hand, after your first draw (calls interrupt this)
Suucha riichinashiThe hand does not get drawn if there are four riichis on the table and nobody won off the final riichi discard
SuukaikannashiThe 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 rendanashiThe hand does not get drawn if the same four winds get discarded during the first turn
SanchahounashiIn case of three rons on the same tile, the loser has to pay all three winners
AkadoranashiNo red fives
UradoranashiNo extra dora after winning with riichi
KandoranashiNo extra dora after kan
KanuradoranashiNo extra dora below kandora
KuitanariOpen tanyao is allowed
IppatsunashiNo extra yaku for winning the turn after you declared riichi
Daburu RiichiariExtra one han yaku for declaring riichi during the first turn (interrupted by calls)
Open Riichiari, wait only, no yakumanWhen declaring riichi, you can show your wait to everyone for one extra han; no yakuman when dealt into
Nagashi ManganariIf the round is drawn, you only discarded yaochuuhai and nobody called from you, then you win with a Mangan hand
Haitei rinshannashiIf you kan the penultimate tile and then tsumo off the kan draw, it's only rinshan kaihou, not haitei
DaisharinnashiNo special yakuman for 22334455667788 in one suit
PaarenchannashiNo special yakuman for winning eight times in a row
Hatsu in RyuuiisouoptionalYou can have hatsu in your ryuuiisou, but you don't have to
RenhoumanganRenhou (ron during first turn) is at least mangan, not yakuman
Kokushi ankan ronariYou can ron a closed kan iff you are tenpai for kokushi musou
Kazoe yakumanariIf you have 13 or more han, your hand is considered yakuman
Double yakumannashiThere are no double yakuman
Combined yakumannashiYakuman do not stack - if you have two yakuman in your hand, it's still only counted as one
Daisangen/Daisuushi paoariIf 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 paonashiNo such rule for suukantsu
Daiminkan paonashiNo pao for rinshan kaihou
Honba on pao ronpao paysThe person who is responsible for the pao payment pays any points due to honba
Kiriage Manganari4han30 and 3han60 are mangan
Chombo payment20k after scoringIf there's a chombo, 20k points are payed after completing the tables scoring (including uma/oka)
Start score25000Everybody starts with 25k points
Goal score30000The point baseline is 30k (see below)
TobinegativeThe game is aborted if somebody falls below zero points
ShaabaariIf 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 placingsariIt's possible for two people to have the same place
Leftover riibolostAny leftover riichi sticks are lost if the hanchan ends on a draw
Score roundingTenhouScores 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
Oka5000There is a 5000 oka, meaning the winner gets 15k points extra
Uma30000/10000First 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.
There is no kita nuki.
Check out interesting and helpful facts about mahjong at the Kendra Mahjong Twitter!