Vienna Game Max Lange Defense Puzzle (Rated 1139): Attack f7 — Win with a Queen Sacrifice

The f7 square is the most fragile point in an uncastled kingside — defended by nothing but the king, it is a magnet for early pressure. In this middlegame, White has trained two heavy pieces on that square while Black's king remains stranded in the center behind a broken pawn shield. The winning idea is blunt but powerful: give up the queen to rip open the king's cover and drag the monarch into the open, where the remaining pieces coordinate to keep checking and chasing it across the board. Material falls, but the initiative decides the game.