Sophocles on stylistic elements, with "Oedipus Rex" coming in Sophocles' middle period. Most of Sophocles' plays show an undercurrent of early fatalism and the beginnings of Socratic logic as a mainstay for the long tradition of Greek tragedy. The Theban plays consist of three plays: "Oedipus Rex" (also called "Oedipus Tyrannus" or "Oedipus the King"), "Oedipus at Colonus" and "Antigone". All three plays concern the fate of Thebes during and after the reign of King Oedipus. They have often been published under a single cover. Sophocles, however, wrote the three plays for separate festival competitions, many years apart. Not only are
Oedipus Rex the prophecy that the king had sought to avoid by exposing Oedipus at birth is fulfilled. Before arriving at Thebes, Oedipus encounters the Sphinx, a legendary beast with the head and breast of a woman, the body of a lioness, and the wings of an eagle. The Sphinx was sent to the road approaching Thebes as a punishment from the gods, and would strangle any traveler who failed to answer a certain riddle. The precise riddle asked by the Sphinx varied in early traditions, and is not stated in "Oedipus Rex", as the event precedes the play; but the most