Historical clue formulations

• Brilliant at negotiating — 2026-06-22
• Perceptive — 2025-10-19
• Canny — 2023-01-19
• Sharp — 2016-04-12
• Astute — 2015-11-20
• Sharp — 2015-01-30
• Cunning — 2010-01-12
• Astute — 2006-10-16
• Slick — 2005-10-29
• Sharp — 2005-09-10
• Canny — 2001-12-23
• Sagacious — 1994-08-14