Portuguese Gambit Puzzle (Rated 1113): Fork — Material Gain
A fork is a tactical idea in which one piece creates multiple threats at once, often attacking the king and a valuable piece. In this middlegame position, White must recognize that the opponent’s active pieces are vulnerable despite Black’s material advantage. A forcing check changes the priorities of the position, restricts the king, and exposes a hanging queen. The resulting sequence turns a defensive-looking position into a decisive material gain.