Learn How to Exploit a Pin: Decisive Material Gain
This puzzle shows a classic middlegame pin tactic in the Four Knights Game, where active piece placement creates a direct tactical shot against the enemy king and queen. Black’s rook activity on the e-file turns a normal-looking position into a forcing sequence that wins material. The key idea is that a pinned piece cannot move freely, so the defender’s coordination collapses when pressure is added to the same line.