Learn How to Fork: Decisive Material Gain
This middlegame puzzle from the Sicilian Defense shows a classic knight fork that creates a decisive material gain. The key idea is to use an active knight on a strong outpost to attack multiple high-value targets at once, forcing the opponent into a defensive response. Because the enemy queen and rook are vulnerable, the tactic works as a tactical refutation rather than a slow positional squeeze. It is a good example of how piece activity can outweigh raw material in classical chess.