Oedipus he was her son, begged him to stop his search for Laius' murderer. Oedipus misunderstood her motivation, thinking that she was ashamed of him because he might have been born of low birth. Jocasta in great distress went into the palace where she hanged herself. Oedipus sought verification of the messenger's story from the very same herdsman who was supposed to have left Oedipus to die as a baby. From the herdsman, Oedipus learned that the infant raised as the adopted son of Polybus and Merope was the son of Laius and Jocasta. Thus, Oedipus finally realized that the man
Oedipus and the Sphinx pass. Failure means his own death and that of the besieged Thebans. The riddle was: "What walks on four feet in the morning, two in the afternoon and three at night?". Oedipus answered: "Man: as an infant, he crawls on all fours; as an adult, he walks on two legs and; in old age, he uses a walking stick". Oedipus was the first to answer the riddle correctly and, having heard Oedipus' answer, the Sphinx was astounded and inexplicably killed herself by throwing herself into the sea. Oedipus thereby won the freedom of the Thebans, the kingdom of that city