Nimzo Larsen Attack Classical Variation Intermediate Puzzle (Rated 1449): Win with a Fork — Decisive Material Gain

This puzzle comes from the Nimzo-Larsen Attack, Classical Variation, where White uses active piece placement and a central break to create a tactical edge. The key idea is to exploit loose pieces and the opponent’s overextended setup. In positions like this, a well-timed pawn advance can open lines, attack two targets at once, and force Black into a passive defense. The result is a clear gain in activity and material, not a speculative attack.