Alexandra Kosteniuk (Black) Puzzle: Fork — Knight Check Fork

A knight fork is especially powerful when it arrives with check. The checked king must respond immediately, leaving the knight free to attack another valuable target on its next turn. In this position, Black exploits White’s exposed king geometry and the alignment of a major piece on a vulnerable square. What looks like a material edge for White is overturned by a forcing tactical sequence, making this a useful middlegame lesson in initiative and king safety.