Force a defender away from its post
Force the defender to move and abandon what it was guarding. The square it leaves is yours.
Queen takes f7 with check. King must capture or move off the back rank.
Queen does the dirty work. Note the exposure.
3 more clean runs (at any point) to reach Recall.
Black's king defends f8 indirectly. Pull it off.
3 more clean runs (at any point) to reach Recall.