In a dogfight ("A" Scenario), aircraft "A" is being shot at by aircraft "B". In order to lead aircraft "A", "B" must turn inside "A" and will soon overshoot if "B" does not perform a defensive maneuver. "A" can force an overshoot and then turn into "B" for a shot.
("B" Scenario) To prevent "B" from overshooting, it is common practice for it to perform a YO-YO (quick climb then dive) which absorbs energy and increases the flight path which will help keep it behind "A".
In the second scenario, what options does the lead aircraft have to gain the advantage over an enemy behind it that likly is about to perform a YO-YO?