Ittsuu vs sanshoku

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The two yaku ittsu and sanshoku are not compatible, because the hand does not have enough tile groupings to accommodate both yaku. In turn, this forces players to choose one over the other in the event both are viable during the course of a hand.

Value

^ Ippatsu requires riichi to be of any use.

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
ITT

^ Ippatsu requires riichi to be of any use.

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
SDJ

When closed or open, both produce the same amount of han: one while open, or two while closed. Therefore, the value question is somewhat irrelevant. The balance then stems on the other yaku combinations. In the case of tanyao, then sanshoku may be favored as ittsu utilizes terminals.

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