Nimzo Indian Defense Fork Puzzle (Rated 859): Win Material — Crushing Fork

This middlegame puzzle is a classic example of a crushing fork that wins material by exploiting king safety and loose pieces. White’s active knight jumps into the enemy camp with tempo, forcing the king to respond while also attacking valuable targets. The key idea is that tactical threats against the king can override material balance and coordination. Once the king is displaced, the follow-up captures become much easier because Black’s pieces are overloaded and several defenders are poorly placed.