Learn How to Win Material: Endgame Fork
This chess endgame puzzle shows how a seemingly active rook can become a tactical liability when the opponent’s pieces are lined up on the same file. The key idea is attraction: forcing the king to capture on a square that opens a stronger follow-up. In classical chess, these motifs often appear when one side has a pinned rook, an exposed back rank, or loose pieces that can be picked off after the first tactical shot. The result is decisive material gain rather than a mating attack.