French Defense Pin Puzzle (Rated 994): Spot Mate in 1 — French Defense Horwitz Attack

This puzzle comes from a French Defense Horwitz Attack middlegame where one side’s king is already under severe pressure. The key lesson is to recognize when a mating net is supported by piece activity, pinned defenders, and weak king shelter. Even in a balanced material position, a single tactical shot can end the game if the enemy king has no safe squares and key defenders are overloaded or immobilized.