Four Knights Game Intermediate Puzzle (Rated 1238): Exploit Kingside Attack — Decisive Material Gain

This middlegame puzzle comes from the Four Knights Game, where rapid development and king safety matter more than slow maneuvering. White’s pieces are ideally placed to punish the loosened black kingside, especially when the f7 square becomes a tactical target. The key idea is a forcing kingside attack that uses a sacrifice to drag a defender away and open lines against the king. In practical classical chess, these are the moments where activity outweighs material count.