Grunfeld Defense Zaitsev Gambit Puzzle (Rated 1375): Win with a Pin — Crushing Middlegame Tactics

This puzzle shows how a well-timed rook invasion can turn king safety into a decisive material gain. White’s king is exposed, and the bishop on c4 becomes a tactical target once the file is opened for the rook. The key idea is a pin that also creates a skewer-like effect: a defended piece is forced to stay in place while the king’s position limits counterplay. In classical chess, these short forcing sequences often decide the game immediately.