Old Indian Defense Czech Variation Puzzle (Rated 1405): Win Material — Tactical Refutation

This middlegame puzzle from the Old Indian Defense shows how a single active piece can create a tactical refutation. White has more space and central control, but the position is tactically loose: one advanced bishop is vulnerable, and Black’s pieces are coordinated to exploit it. The key lesson is that material imbalances do not matter if a piece is hanging or can be removed with tempo. In classical chess, accurate calculation often turns a slightly better position into a decisive advantage.