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 wife, Oedipus' children are now by Jocasta. In the Second Olympians Ode Pindar wrote: "Laius' tragic son, crossing his father's path, killed him and fulfilled the oracle spoken of old at Pytho. And sharp-eyed Erinys saw and slew his warlike children at each other's hands. Yet Thersandros survived fallen Polyneikes and won honor in youthful contests and the brunt of war, a scion of aid to the house of Adrastos.". In 467 BC the Athenian playwright, Aeschylus, is known to have presented an entire trilogy based upon the Oedipus myth, winning the first prize at the City Dionysia. The First