Queens Indian Defense Riumin Variation Puzzle (Rated 783): Win Material — Tactical Refutation

This middlegame puzzle from the Queen's Indian Defense shows a classic tactical refutation based on piece activity and removal of the defender. Black’s position is already more active, with strong queenside pressure and a clear lead in the strategic battle. The key idea is to exploit the overloaded white pieces and force a sequence where the best defender is eliminated, opening lines for the remaining pieces to dominate. It is a practical example of how a small initiative can turn into a decisive advantage.