Learn How to Win Material: Clearance Fork
This puzzle comes from the Nimzo-Indian Defense, Three Knights Variation, and it shows a classic middlegame tactical refutation. The key idea is that a well-placed bishop can be used to clear a line, expose a hidden attack, and force the opponent into a losing sequence. White’s active pieces and the loose black bishop create a tactical target, while the rook on a8 becomes vulnerable once the position opens up.