Sphinx of Greek mythology is a mystery hidden in order to harm the monster, Egypt's largest Khufu pyramid, sphinx before the monster he is. He gave Oedipus the question is: what with four legs to walk in the morning, at noon with two legs to walk in the evening with three legs to walk? Oedipus answered: who is. Life in the morning, he was a child, two legs and two hands to crawl; to life at noon, he became the prime of life, just walking on two legs; to life in the evening, his aging and ailing, has to use crutches Walk, he was known as 3 feet. Oedipus the correct answers. Sphinx Zhuiya ashamed to die. "Mystery of Sphinx," is often used to describe the complex, mysterious, difficult to understand.