Maajanbu Aachen
Aachen Riichi Open
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Thank you to everybody who attended the 2018 Aachen Riichi Open.

Due to popular demand, we will be uploading our organisational spreadsheets etc. soon, after making sure they're fit for public consumption.

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The fourth Aachen Riichi Open was held on the 2nd/3rd of June 2018.
There were 40 players from 7 different countries, resulting in a total weight of 2.5.

Place EMA Number Last name First Name Points Ranking
108010166HOOGLANDAns1575001000
211990006SAKAMOTOGemma106800974
305100090ESCHENBURGAxel103100949
405100124BEESEPeter85700923
505100166SCHLICHManuel80000897
6-HAASBROEKNicole74800-
708010351KUIJPERSJohn60900846
808010412LINDEN, VAN DERPauline54400821
908010411LINDEN, VAN DERAd49600795
1001000013DOPPELHOFERAlexander41200769
1108010028BROERSEveline32400744
1205100157VÖLKERMarcus23200718
1305100072STUMMEYERIlka20800692
1404090080AGUERRECédric19700667
1502010038DE ROOCKChris18100641
1608010734VAN DER SLUIJSMichael13700615
1708010725BODDERobert12800590
1808010151HOOGLANDCor10300564
1908010162MORELHanneke9100538
2008010022ONNINKJanco8100513
2102010043WECKHUYZENTine7100487
2205900008BANSEMERSilke3500462
23-LAUBELeonhard-7200-
2408010526SOMMERSOlav-10800410
2509990049PERSSONStefan-10900385
2605100153HAHNTimur-16100359
2708010584JINJinbi-17700333
2808010025CROEZEMarianne-18000308
2904160035CAOOlivier-23000282
3005900010PEKAUUwe-25400256
3104040048HUYNHJoe-Calberson-27800231
3201000108TRINKLMatthias-46900205
3305100155KAMMERStefanie-63900179
3405100167FRANKTobias-68000154
35-HERBSTAlexander-92200-
3602010039DERMOUTJos-113000103
3708010026CROEZEJaap-11520077
3808010487VAN DER MEERJanny-11550051
3905100146KRUSEMarkus-14280026
4008010350KUIJPERSEls-1584000

The observer report by Manuel Schlich can be read here.
The third Aachen Riichi Open was held on the 5th/6th of August 2017.
There were 24 players from 6 different countries, resulting in a total weight of 2.5.

Place EMA Number Last name First Name Points Ranking
1 04040048 HUYNH Joe-Calberson 152600 1000
2 04160015 ROSSARD Antoine 120600 957
3 08010617 HAASBROEK Nicole 104200 913
4 08010028 BROERS Eveline 98900 870
5 11990047 CLARKE David 84200 826
6 11990006 SAKAMOTO Gemma 80100 783
7 04160035 CAO Olivier 75400 739
8 22000004 PERNICOVÁ Radka 43100 696
9 08010003 OORSCHOT, VAN Gerda 40600 652
10 08010025 CROEZE Marianne 34900 609
11 17990015 BELLAY Ondrej 15500 565
12 05100166 SCHLICH Manuel -5700 522
13 05100161 RAPPE Marco -30500 478
14 17990018 MÓZA Juraj -30500 478
15 05100157 VÖLKER Marcus -39800 391
16 05100155 KAMMER Stefanie -44800 348
17 05100153 HAHN Timur -57500 304
18 08010026 CROEZE Jaap -61800 261
19 22000016 NAVRÁTIL Filip -64100 217
20 - SCHMIDT Maximilian -90400 -
21 04160081 FOUQUES Julien -93000 130
22 08010162 MOREL Hanneke -118800 87
23 08010725 BODDE Robert -134800 43
24 05900010 PEKAU Uwe -158400 0

The observer report by Radka Pernicová can be read here.
The second Aachen Riichi Open was held on the 2nd/3rd of April 2016.
There were 28 players from 3 different countries, resulting in a total weight of 2.

Place EMA Number Last name First Name Points Ranking
1 04040048 HUYNH Joe-Calberson 2204001000
2 05100096 KÖHLER Matthias 129600 963
3 05100124 BEESE Peter 88200 926
4 05100090 ESCHENBURG Axel 78900 889
5 05100157 VÖLKER Marcus 56700 852
6 05100130 NAARMANN Simon 51500 815
7 05100159 GRIMMELT Lasse 46300 778
8 08010166 HOOGLAND Ans 40300 741
9 04160015 ROSSARD Antoine 27600 704
10 05100138 KILLISCH Julia 21300 667
11 04160084 SUN Zeyu 21200 630
12 05100160 LEDWIG Pia 15000 593
13 05100155 KAMMER Stefanie 10500 556
14 05100161 RAPPE Marco 5400 519
15 05100146 KRUSE Markus -8100 481
16 04160073 HENRY Jessica -12400 444
17 08010151 HOOGLAND Cor -12900 407
18 08010020 REP Martin -13700 370
19 04160035 CAO Olivier -25000 333
20 05100072 STUMMEYER Ilka -26600 296
21 05100151 PAPE-LANGE Julian -36300 259
22 08010025 CROEZE Marianne -43700 222
23 08010725 BODDE Robert -44700 185
24 05100156 JOURENKO Maxim -77300 148
25 04160081 FOUQUES Julien -94200 111
26 05100118 HUYNH Bertolt -120400 74
27 08010026 CROEZE Jaap -157600 37
28 05100148 RATH Felix -220000 0

The observer report by Ans Hoogland can be read here.
The first Aachen Riichi Open was held on the 2nd/3rd of May 2015.
There were 20 players from 4 different countries, resulting in a total weight of 2.

Place EMA Number Last name First Name Points Ranking
1 05100148 RATH Felix 320900 1000
2 04040048 HUYNH Joe-Calberson 213800947
3 11990075 CHIBA Daina 163400 895
4 08010166 HOOGLAND Ans 120600 842
5 05100155 KAMMER Stefanie 59700 789
6 08010289 PEERDEMAN Marian 38700 737
7 05100096 KÖHLER Matthias 18100 684
8 08010025 CROEZE Marianne 4800 632
9 05100146 KRUSE Markus -2500 579
10 05100156 JOURENKO Maxim -15300 526
11 08010026 CROEZE Jaap -22800 474
12 05100151 PAPE-LANGE Julian -23900421
13 08010162 MOREL Hanneke -41600 368
14 08010168 GRINSVEN, VAN Dimphy -65400316
15 08010725 BODDE Robert -75700 263
16 05100149 WAGNER Rebecca -101500 211
17 05100153 HAHN Timur -112300 158
18 05100157 VÖLKER Marcus -127100 105
19 05100158 DANIEL Pascal -168500 53
20 05100147 LAUBE Waldemar -183400 0

The observer report by Daina Chiba can be read here.
Maajanbu
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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 maajanbu-aachen@gmail.com!
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.

Basics
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
Dora
AkadoranashiNo red fives
UradoranashiNo extra dora after winning with riichi
KandoranashiNo extra dora after kan
KanuradoranashiNo extra dora below kandora
Yaku
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
Pao
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
Scoring
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!