Nimzo-Indian Knight Sacrifice Chess Puzzles

The Nimzo-Indian Knight Sacrifice is a tactical motif that appears in Nimzo-Indian structures when a knight is given up to damage the enemy king, win the bishop pair, or open lines against a weakened center. It often arises after Black has played ...Bb4 and White has accepted structural concessions such as doubled c-pawns or an exposed king. The sacrifice is usually tied to a concrete follow-up, not just a vague attack.