Historical clue formulations

• Fallback option — 2024-10-28
• Alternative — 2024-04-25
• Backup strategy if things go wrong — 2023-07-18
• Next-best option — 2022-07-06
• Fallback option — 2019-10-28
• Backup — 2019-05-10
• Fallback strategy — 2018-02-22
• Backup strategy — 2017-04-17
• Contingency arrangement — 2014-09-02
• Alternative if things don't work out — 2014-06-10
• Backup strategy — 2013-08-26
• Alternative — 2013-06-09
• Backup procedure — 2012-06-24
• Fallback strategy — 2010-12-21
• Alternative — 2010-07-23
• Emergency strategy — 2010-05-18
• Alternative strategy if things don't work out — 2010-02-08
• Alternative if things go wrong — 2008-01-02
• Backup — 2007-09-01
• Fallback option — 2004-09-30
• Secondary strategy — 2004-06-16
• Fallback strategy — 2004-03-23
• Something to resort to — 2004-01-23
• Second course? — 2003-06-21
• Alternative if things don't work out — 1998-05-26