Historical clue formulations

• Intractable situation — 2024-09-26
• Deadlocked situation — 2023-07-18
• Deadlock — 2023-03-26
• Deadlock — 2021-09-18
• Stalemate — 2021-06-30
• Roadblock — 2017-11-12
• Stalemate — 2015-08-18
• Standoff — 2011-01-11
• You can't escape from it — 2008-12-12
• Deadlock — 2007-12-14
• Roadblock — 2000-08-18
• Mediator's problem — 2000-05-06
• Standoff — 1999-10-02
• Stalemate — 1999-01-19
• Stalemate — 1998-04-09
• Negotiators' problem — 1997-01-25
• Deadlock — 1994-03-20
• Catch-22 situation — 1994-03-08
• Full stop — 1994-02-06