Oedipus Rex and that deal with the story of Oedipus, "Oedipus Rex" was the second to be written. However, in terms of the chronology of events that the plays describe, it comes first, followed by "Oedipus at Colonus" and then "Antigone". Prior to the start of "Oedipus Rex", Oedipus has become the king of Thebes while unwittingly fulfilling a prophecy that he would kill his father, Laius (the previous king), and marry his mother, Jocasta (whom Oedipus took as his queen after solving the riddle of the Sphinx). The action of Sophocles' play concerns Oedipus' search for the murderer of Laius in
Oedipus Rex of Attic tragedy. No other shows an equal degree of art in the development of the plot; and this excellence depends on the powerful and subtle drawing of the characters." Cedric Whitman noted that "the "Oedipus Rex" passes almost universally for the greatest extant Greek play..." Whitman himself regarded the play as "the fullest expression of this conception of tragedy," that is the conception of tragedy as a "revelation of the evil lot of man," where a man may have "all the equipment for glory and honor" but still have "the greatest effort to do good" end in "the evil