This episode has no incidental music.
This episode was watched by 14.4 million viewers on its original transmission.
Tom Baker plays the Doctor, who blows up the Daleks by activating Davros's trigger device. According to the making of documentary on the 2022 Blu-Ray release, Baker also activated the explosives that blew up the Daleks during location filming.
The idea of two interstellar battle fleets being totally impotent due to a logical impasse was previously used in the novella This Island Earth.