What is the maximum number of different yaku that can exist in a winning hand?
This one has 7. Riichi, Ippattsu, Tsumo, Pinfu, Tanyao, Iipeiko, San Shoku.
I believe if you substitute Junchan for Tanyao, that you then have a Kana-chan, which is also 7.
Can you get 8.....or more?
If riichi was called with 5 tiles left (I think it's 5), can you get haitei raoyue along with ippatsu?
I don't think anyone would ever do that (except maybe the Koromo) but it seems legal. That would give 8.
Are there any other possibilities for 9.....or more?
Also, how about the maximum number of han that you can get from yaku only. (no dora)
I came up with this one but I'm not sure it's legal.














riichi, ippatsu, tsumo, pinfu, chinitsu, junchan, ryanpeiko, haitei raoyue (adds up to 17 han, I think)
This is also 8 different yaku and again you have to riichi with 5 tiles left.
Is this hand even possible? Can you have ryanpeiko in one suit?
I guess this would be a kazoe yakuman but the yaku would be listed separately on the score sheet.
Again, can you think up any other possibilities higher than 8 different or 17 total (assuming all of this is correct).