Nimzo Indian Defense Normal Variation Puzzle (Rated 973): Win Material — Decisive Fork Tactic

This middlegame puzzle comes from the Nimzo-Indian Defense and features a classic tactical idea: using a forcing check to create a fork and win material. Black’s queen activity targets the white bishop and the loose coordination around White’s king, turning a normal-looking position into a tactical problem. The key is that the attack is not just about checking the king; it also creates a threat against an undefended piece, so White’s reply is constrained and the follow-up becomes decisive.