22 456 789 789 89 [7]
This doesn't make any sense. Marisa just discarded the 7man, so it can't possible be pinfu.

I blame Saki for pulling me into the world of Japanese mahjong and causing me to be subsequently overwhelmed by all the information, but anyways...

S1eth said:
This doesn't make any sense. Marisa just discarded the 7man, so it can't possible be pinfu.

So for Reimu's menpin, she had to have actually drawn the 7man and not picked up the one Marisa discarded, right? Or am I missing something?

men-tan-pin is the abbreviation for the extremely common 3 yaku combo riichi tanyao pinfu, this time without the tan(yao).

Pinfu is for 0-point hands only =
only sequences (0 minipoints),
the wait has to be an open wait for 2 tiles (single tile waits are worth 2 minipoints and (7)89 IS a single tile wait)