Hero 5$
Preflop: Hero is BU with T♠, T♥
MP1 calls $0,25, 3 folds, Hero raises to $1,00, 2 folds, MP1 calls $0,75.
Flop: ($2,35) J♥, 2♥, J♣ (2 players)
MP1 checks, Hero bets $1,65, MP1 raises to 20, Hero ???
What is the correct move here and why? Opponent is unknown.
a) fold
b) call
c) leave the table
d) try to check behind
I opt for call - pot odds are almost 1:3 and often with this sort of board I've seen players do this against the shortstack with A-high and lower pocket pairs.
I laughted hard about option c.) and d.). 
Option b.) is the right choice here to make. Villain just played limp call from MP1 position what most likely is a hand like a medium Pocket Pair or suited cards or suited connectors like KTs, KJs, QJs, QTs, T9s, 98s etc.
Its more likely that he pushes here with a Flushdraw or a medium Pocket Pair, then a Jack, since he more likely will put us on Overcards here. So I would call.
The majority is correct here:
According to the strategy we have an easy fold, because we don't have a made hand anymore.
But is it better to fold here?
We have to determine the range, which Villain can hold.
As an example this is not an untypical range:
99-22,AhQh,AJs,KJs,QJs,AJo,KJo,QJo
I think such a range is possible, but has to be adjusted of course depending on the opponent.
Which equity do we have against this hand if we call here? We use the Equilator:
At first we have to look at the pot:
What kind of odds do we get?
In the pot are (before our all-in decision):
2,35 $ + 1,65 $ + 1,65 $ + 2,35 $ (Reststack we would have to call after the push) ==> 8 $ are in the pot
How much do we have to call?
2,35 $
==> We have odds of 2,35:8 oder 1:3,4
That means we have to be ahead in 22% of the cases to call profitably. Against the range of Villain we have an equity of 40%: We have to call here, because a fold would be a massive loss of expected value.
