Answer
"Oedipus and the Sphinx" is a painting by Gustave Moreau that depicts the encounter between the Greek mythological hero Oedipus and the Sphinx. The Sphinx, a creature with the head of a woman and the body of a lion, posed a riddle to travelers, and those who failed to answer were devoured. Oedipus solved the riddle, causing the Sphinx to throw itself off a cliff.