Queens Pawn Game London System Discovered Attack Chess Puzzles

In the queens pawn game London system, a discovered attack usually appears when White’s bishop on f4, knight, or queen is moved to reveal a line on the enemy king, queen, or a pinned piece. The defining setup often includes d4, Nf3, Bf4, e3, and c3, with the attack emerging after a piece steps away from a rook, bishop, or queen line. In this structure, the tactic is less about a direct sacrifice and more about uncovering pressure from a previously blocked piece.