Knudtzon was shown definitively to have been correct when a large quantity of tablets written in the familiar Akkadian cuneiform script but in an unknown language was discovered by Hugo Winckler at the modern village of Boğazköy, the former site of Hattusa, the capital of the Hittite Empire.
Los estudios de Knudzton se habían mostrado acertados sobre una gran cantidad de tablillas escritas en escritura cuneiforme acadia, excepto con las pertenecientes a una lengua desconocida descubierta por Hugo Winckler en el pueblo de Bogazköy, sede de la antigua Hattusa, la capital hitita.