Nimzowitsch Defense Colorado Countergambit Puzzle (Rated 1180): Win Material — Pin Tactic
This middlegame puzzle is built around a pin that turns a seemingly active piece into a tactical liability. Black’s rook activity creates pressure on the center, but the key idea is that the pinned queen cannot move freely without exposing the king. In positions like this, the strongest continuation often comes from forcing exchanges that remove the defender and convert activity into material gain. The lesson is to look for overloaded pieces and lines where one tactical shot changes the evaluation immediately.