Discard reading

[Mauro]

In a show I'm watching, one of the players has this discards:

Hand.jpg (44.18 KiB) Viewed 13628 times

From this the other players suppose that he's tenpai, and that his outs are .

Assuming he has tenpai could depend on him discarding , since that's a tātsu, so either he drew better tiles, he's aiming for tanyao, or he's tenpai; but I have no idea about getting from those discard to the outs. I was wondering if is there really a way to do such a reading from those discard.

[or2az]

Wow! So he has a in his hand and is ready and waiting.
Those must be really good other players. I would love to be able to deduce that after those 5 discards.
And he didn't even call riichi when he tossed the .
I'm impressed.

[Ozball]

I feel that there might be a bit of a stretch to get ALL that information from just those discards (tenpai possibly, but being certain about the 36p wait seems a bit far fetched to me, but I could be wrong. Also it could be based on some of the other discards and what the person themselves has in their hand), but there is a lot you can tell from discards that might not be apparent initially.

Murakami Jun does a bit of talking about discard reading on his appearance on Mahjong Watch's Mahjong No Takumi. The videos are in Japanese, but the first 3 hands have English subtitles at least, and can give you an insight into some discard reading.
Playlist:
https://www.youtube.com/watch?v=6Q7Etkl ... 3yUtiD9l-k

[Barticle]

The 8p could've been an Ura-Suji but that would've been for a 4-7 wait. (Holding 6_8, draw 5, discard 8.)

Out of interest, what show was this from? Also was the discarder wearing mirror sunglasses?

[Mauro]

Legendary Gambler Tetsuya. And no, no sunglasses XD

[Shirluban]

Tenpai status could be inferred by other info, like the time to discard, which tiles are draw-discarded, if the discard is dangerous/dora, ...
But on the 5th discard it's very far-fetched, and the winning tiles can be anything.