Learn How to Win Material: Tactical Refutation
This puzzle comes from the Grunfeld Defense, Exchange Variation, where tactics decide the game before any endgame simplification. Black’s queen invasion creates immediate pressure on White’s king and back rank, but the real point is material gain: White’s loose pieces and weak back-rank coordination allow a forcing sequence that wins the queen. In practical classical chess, these positions reward calculation over general plans, because one tactical shot can convert a middlegame advantage into a decisive material edge.