London System With Bd3 Other Variations Puzzle (Rated 845): Win Material — Discovered Attack

This middlegame puzzle shows a classic discovered attack idea: one forcing capture opens a line for a stronger piece to hit a high-value target. Black’s active pieces coordinate against White’s king-side structure and loose back-rank defenders, turning a material deficit into a tactical win. The key is that the first forcing move is not the final blow; it simply clears the path for the bishop to become decisive. Patterns like this often decide classical chess games when one side’s pieces are overloaded.