Historical clue formulations

• What you might do if you don't know an answer — 2025-04-01
• "___ who?" — 2023-05-28
• Reckoning — 2023-02-04
• Say "…, say," say — 2023-01-01
• One might be educated — 2021-12-11
• Shot in the dark — 2018-06-13
• Suppose — 2015-12-06
• Hangman turn — 2013-06-12
• Jeans brand with a question mark in its logo — 2012-07-09
• Take a stab — 2011-12-27
• Twenty questions attempt — 2011-11-28
• "___ again!" — 2011-05-27
• "___ who?!" — 2010-10-25
• 20 Questions turn — 2008-09-16
• Surmise — 2006-04-03
• Something ventured — 2006-03-17
• Conjecture — 2003-05-20
• 20 Questions turn — 2002-10-08
• "You'll never ___!" — 2002-09-17
• Shot — 2001-06-30
• "___ again!" — 2000-08-25
• Riddler's challenge — 1998-06-25
• It can be wild — 1996-07-28
• Calvin Klein competitor — 1995-09-17
• Twenty questions attempt — 1995-06-26