What's going on here? Why does she have an incomplete hand out on the table? Is she emotionally blackmailing him into discarding that one-dot so she can win - with big three dragons, no less?

Dai-san-gen!
32000 please.

Mithiwithi said:

What's going on here? Why does she have an incomplete hand out on the table? Is she emotionally blackmailing him into discarding that one-dot so she can win - with big three dragons, no less?

Open Riichi - you get an extra yakuman off the hand, because the person that discards your winning tile is amazingly stupid.

Silly 'Zuchi, you already have a Daisengen, there's no need to go for double yakuman (assuming variant variant rules*), and that's assuming he deals in. Otherwise you just get a meaningless extra han (since, well, you're already at yakuman).

(*Open riichi itself is a variant rule that only awards one extra han. A variant rule on open riichi [making it a variant variant rule] allows the declarer to get a yakuman [basically max limit points] if someone intentionally deals in. Opposing riichi usually don't count for the yakuman because they already have no choice but to discard non-winning tiles.)

Open riichi to get a yakuman off a regular (non-riichi) discard is pretty common, though. Because, really, that's a massively moronic move to make. (as is having open riichi at all)

Though in tournaments (where you wouldn't want to do open riichi anyway...), it's often the case that neither gets you any extra points - although they won't stop you from doing it in the first place, there's just no point to doing so.

So Ikazuchi did this in the really naive hope whoever she was playing against would let her take it?