Jan Timman (Black) Puzzle: Fork — Win Material
A fork is a tactical move that attacks two or more valuable targets at once. In this position, White must overcome a material deficit by exploiting Black’s exposed king and vulnerable queen. The key idea is to use an active rook with check, forcing the defender to respond while creating a second attack. This illustrates how king safety can outweigh static material and how a forcing move can turn a dangerous position into a decisive material gain.