Nimzo Indian Defense St Petersburg Variation Puzzle (Rated 847): Win Material — Nimzo-Indian Tactic

This middlegame puzzle shows a classic tactical idea from the Nimzo-Indian Defense: use active piece placement to win material by exploiting loose defenders and overloaded pieces. White’s pieces are coordinated around the center and kingside, while Black’s setup leaves key targets vulnerable. The critical motif is a forcing sequence that removes a defender and turns a skewer-like alignment into a direct material win. In practical classical chess, these are the moments where calculation and piece activity matter more than long-term plans.