Common Mating Pattern - "Backed Into A "Corner [Dovetail]"

Characteristics:

• Attacking Queen is protected
• Attacking Queen is directly diagonally adjacent [if there are more squares in between, the King can escape], controlling 6 of the 8 potential escape squares
• The 2 squares not covered by the Queen are Knight moves away from the Queen [in this case, e7 and f6]
  • Since the Queen cannot move like a Knight, those escape squares are typically blocked by the opponent's own pieces, the purple circles [so capture is impossible] as long as the blockers are not Knights [because they would control the square the Queen is on]
• The square diagonally away from the enemy King [in this case, f7] is usually empty, giving the illusion of a potential escape

Only later did I find out this had an actual name:  the Dovetail