Learn How to Win a Fork: Nimzo-Indian Theory
This classical chess puzzle comes from a sharp middlegame where tactics outweigh long-term plans. Black’s queen and knight coordinate to create a forcing sequence that wins material by exploiting a pinned piece and a vulnerable king in the center. The key idea is a tactical refutation: when one piece is overloaded, a forcing capture can open a fork on the king and rook. In chess endgame terms, the resulting material swing is usually decisive.