Preflop quiz

What's your play?

8-max · 8 bb
Pot 2.5 bb
UTGfold
MPfold
HJfold
COfold
BTN8 bb
D
SBto act
0.5
BBto act
1
A♥7♦

Targeted training: Everyone folded to you. Position: BTN. exit

Everyone folded to you.

The answer comes from Exploit It's full preflop tree, the same one behind the Solver page and Play mode: chip-EV equilibrium, every position at the table, no ICM. EVs are counted from the start of the hand, posted blinds included. An action played at equilibrium, even rarely, counts as perfect.