Historical clue formulations

• Ivory tower sort — 2023-11-24
• Brainiac — 2015-04-30
• Brainiac — 2011-05-09
• Cerebral one — 2003-04-20
• Brainiac — 2002-08-11
• Brainiac — 1997-08-20
• Highbrow — 1994-01-30