Preflop quiz

What's your play?

6-max · 25 bb
Pot 4.25 bb
UTGopen
2
HJ25 bb
COto act
BTNto act
D
SBto act
0.5
BBto act
1
7♦7♥

A player opened before 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.