Historical clue formulations

• Classic play with a Delphic oracle — 2019-06-16
• Sophocles tragedy — 2016-01-06
• *Sophocles tragedy — 2013-10-28
• Stravinsky opera-oratorio — 2004-11-26
• Tragedy by Sophocles — 2000-11-01
• Play with a dog? — 1996-09-11
• Sophocles tragedy — 1994-04-30