Yaku compatibility

Revision as of 03:56, 27 January 2015 by Coppro (talk | contribs) (→‎Compatibility: Update honroutou; it can be combined with mentsumo and chiitoitsu without implying anything else, but combined with junchan forms chinroutou)

This is a table showing the compatibilities of the different yaku with each other. While yaku may be combined in one hand, some yaku simply cannot combine with each other due to tile counts and patterns. In other cases, they simply cannot combine by rule.

Yaku

Key
Abbrevation Yaku
RCH Riichi
DRI Double riichi
IPP Ippatsu
SMO Mentsumo
TAN Tanyao
PFU Pinfu
IPK Iipeikou
ITT Ittsu
YAK Yakuhai
SDJ Sanshoku doujun
SDO Sanshoku doukou
TOI Toitoi
SNA San ankou
SNK San kantsu
CHA Chanta
JUN Junchan
RPK Ryanpeikou
SSG Shousangen
HRO Honroutou
HON Honitsu
CHN Chinitsu
CHI Chiitoitsu
RIN Rinshan
HAI Haitei
HOU Houtei
CHK Chankan

Yaku strategy involves viability to form yaku and maximizing hand value, if possible. This maximization often involves the recognition of the different yaku forming in one hand. Often, this affects the decision which tiles to keep and which to discard.

Three combinations actually form yakuman:

  • Toitoi + Junchan = Chinroutou
  • Toitoi + Mentsumo = Suuankou
  • Honroutou + Mentsumo = Suuankou

A third combination forms a different yaku:

  • Toitoi + Chanta = Honroutou

Nagashi mangan is excluded, because it is incompatible with anything, even riichi.

Compatibility

RCH DRI IPP SMO TAN PFU IPK ITT YAK SDJ SDO TOI SNA SNK CHA JUN RPK SSG HRO HON CHN CHI RIN HAI HOU CHK
RCH                                                
DRI                                                
IPP                                                  
SMO                                                  
TAN                                                  
PFU                                                  
IPK                                                  
ITT                                                  
YAK                                                    
SDJ                                                  
SDO                                                  
TOI                                                  
SNA                                                  
SNK                                                  
CHA                                                  
JUN                                                  
RPK                                                  
SSG                                                  
HRO                                                  
HON                                                  
CHN                                                  
CHI                                                  
RIN                                                  
HAI                                                  
HOU                                                  
CHK                                                  

Yakuman

Even different yakuman may be combined. As a result, point values may increase beyond single yakuman values as multiples of yakuman. Of course, that's only if the rules allow extension into double yakuman and beyond. Combinations involving three kinds of yakuman involve either tsuuiisou, tenhou, or chiihou. With this in mind, the options for combining different yakuman are limited.

Compatibility

KMU DSG SUA SSS DSS TSU RYU CHR CHU SUK TEN CHH
Kokushi musou KMU                      
Daisangen DSG                      
Suuankou SUA                      
Shousuushi SSS                    
Daisuushi DSS                    
Tsuuiisou TSU                      
Ryuuiisou RYU                      
Chinroutou CHR                      
Chuuren poutou CHU                      
Suukantsu SUK                      
Tenhou TEN                    
Chiihou CHH                    

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