Ruy Lopez Birds Defense Deferred Puzzle (Rated 1714): Skewer — Decisive Material Gain
This middlegame puzzle is a classic example of a short skewer: a forcing check that drives the king onto a worse square and exposes a valuable piece behind it. The key idea is that the checking piece is not just giving check; it is also lining up the enemy rook for capture. In practical chess, these tactics often appear when the king is centralized and the opponent’s pieces are overloaded or poorly coordinated.