Computer That Fought a Dragon, The
Lem, Stanislaw. "The Computer That Fought a Dragon." Krzysztof Klinger, trans. Other Worlds, Other Seas: Science Fiction Stories from Socialist Countries. Darko Suvin, ed. New York: Random, 1970. Also in Mortal Engines, q.v. under SL under Anthologies and Collections, as "Tale of the Computer That Fought a Dragon."
A modern fairy tale of a battle between computers and the beast-threats they create.