French Defense Queenside Attack Puzzle (Rated 908): Mate in 1 — Bishop Checkmate

This middlegame puzzle is a classic example of a direct mating net where one active bishop ends the game immediately. White’s pieces are already aimed at the black king, and the queenside structure leaves critical squares exposed. The key idea is to notice how a bishop can deliver a final check when the king’s escape squares are restricted by its own pieces and nearby defenders. In classical chess, these short tactical finishes often come from piece coordination rather than material count.