The Nahdrah Puzzle was a magical puzzle that the Nahdrah demons used to find an intelligent person to replace its head with the one of their prince.
Having impressed them by her high intellect, Winifred Burkle was invited by the Nahdrah to solve their puzzle. Lorne, serving as translator, accompanied her. He discovered that the demons planned to use Fred's head to replace their dying's prince. She was saved by Cordelia Chase, Wesley Wyndam-Pryce, Charles Gunn, and Angel.