Learn How to Win a Fork: London System Tactics
This London System puzzle shows how a quiet-looking opening can turn tactical when one side overextends. White has developed smoothly and built space, but Black can strike with a forcing pawn break that opens lines and creates a decisive tactical sequence. The key idea is to notice when a central advance changes the status of a bishop, knight, and pawn chain at once. In classical chess, these moments often decide the middlegame before the endgame even begins.