Learn How to Win Material: Tactical Refutation
This middlegame puzzle comes from the Queen's Gambit Declined, Tarrasch Defense, where active piece placement creates a tactical refutation. The key idea is to notice when a loose piece is overworked by a queen and knight coordination. Here, White’s pieces are active enough to exploit a hidden tactical sequence that wins material and leaves the position clearly better. The pattern is not about a mating attack, but about forcing the opponent into a losing exchange sequence.