Nimzowitsch Defense El Columpio Defense Puzzle (Rated 1196): Pin — Decisive Material Gain
This middlegame puzzle is built around a classic pin and the power of forcing moves. White’s active pieces coordinate to attack the black queen while keeping the king under pressure, creating a tactical sequence where one defender becomes overloaded. The key idea is that a pinned piece can’t move freely, so exchanges can be used to convert activity into material gain. In positions like this, the best move is often the one that improves a threat already on the board rather than starting something new.