Historical clue formulations

• Hinders — 2024-03-18
• Foils — 2019-11-22
• Thwarts — 2014-12-29
• Blocks — 2003-02-21
• Blocks — 1999-10-29
• Thwarts — 1998-12-15
• Baffles — 1996-07-10
• Holds up — 1995-08-28
• Blocks — 1995-04-11
• Flummoxes — 1994-07-18