Queens Pawn Game London System Discovered Attack Beginner Chess Puzzles

In the queens pawn game London System, White usually builds a solid setup with d4, Nf3, Bf4, e3, and c3 or c4. A discovered attack happens when one piece moves away and reveals an attack from another piece, and in this opening it often appears after the bishop on f4 or the knight on f3 shifts to open a line against the enemy queen, king, or a pinned piece.