>Kanchan waits like 24s or 79p, which can only draw one kind of tile to improve to ryanmen, should also be riichid immediately if you have at least 1 dora.
>24678p11345789s5z
>In this example hand, you should instantly riichi even without dora if you are dealer.
>As non-dealer, the return from riichi is lower, so a bad shape wait with no dora makes for a risky riichi declaration. It's better to stay yamiten.
>Let's think about other cases in which yakuless yamiten can make sense.
>First, when your hand is too cheap. Having your riichi chased and then dealing into a big hit sucks, so going yamiten with something like pinfu nomi is reasonable.
TN: I don't know why he uses pinfu as an example when he said just a paragraph ago that we'll look at yakuless hands.
>The next case is when your wait is depleted. When two tiles of your kanchan are already discarded, or you have a shanpon with two tiles dead. When you have no faith in a wait, consider not taking tenpai and wait for something to stick to an isolated tile.
>These are the two main reasons to choose yakuless yamiten. The downside of yamiten is that the others can play their hands freely, and this is no small downside. Thus riichi with just 1 dora and a kanchan or penchan is usually correct.