In a situation where you can only shove or fold, the bottom of your shoving range will be 0EV. These hands are net losers when called, but they make up for it by winning the blinds.
Quote:
How can I calculate that EV is good at this situation?
HU, no ante, players start with 10bb effective, 0.5bb/1bb blind structure. The BTN can only shove or fold.
EV of shoving
= 1.5bb when they fold,
= 10bb when they call and we win
= -9.5bb when they call and we lose
EV = (1.5bb * fold%) + call%(win%*10bb - lose%*9.5bb)
BB will call with any hand that has at least 9/20=45% equity against the betting range.