Opened at the Plymouth Theatre on October 24, 1974. Closed October 2, 1977 after 1,209 performances — 2.9 years. 2 Tony Awards in 1975, including Best Play; 4 Drama Desk Awards in 1975, including Outstanding Play Equus is a 1973 play by Peter Shaffer, about a child psychiatrist who attempts to treat a young man who has a pathological religious fascination with horses. Wiki link