Semi Slav Defense Fork Intermediate Puzzle (Rated 914): Win with a Fork — Decisive Material Gain

This middlegame puzzle shows a classic tactical refutation built around a fork and king safety. Black’s active knight jumps into the enemy camp, forcing the white king to move and exposing loose pieces at the same time. The position is a good example of how a single tactical shot can turn a slightly better structure into a decisive material gain. In classical chess, these moments often come from piece activity, weak squares, and an uncastled or vulnerable king zone.