Historical clue formulations

• What a drawbridge might cross — 2026-06-02
• Castle defense — 2025-09-22
• Castle defense — 2025-05-13
• Obstacle for a would-be castle attacker — 2024-10-28
• Defense from some attackers — 2024-02-07
• Water under the drawbridge — 2023-12-21
• Tower of London feature — 2023-11-03
• Medieval castle defense — 2023-09-25
• Castle defense — 2023-09-20
• What a drawbridge may cross — 2023-06-27
• Castle protector — 2023-04-17
• Barrier in certain zoo enclosures — 2023-03-15
• Water repellent? — 2023-02-08
• Aquatic protection — 2022-11-17
• Guard seen around a castle — 2022-08-28
• What a drawbridge may bridge — 2021-08-22
• Protective trench — 2021-05-10
• Means of defense that doesn't actually have alligators — 2021-05-03
• Water under the bridge? — 2021-03-26
• Castle defense — 2020-09-20
• Feature of Tokyo's Imperial Palace — 2020-07-31
• Defensive ring — 2018-08-18
• Certain barrier to entry — 2017-02-10
• It's water under the bridge — 2016-08-26
• Certain siege defense — 2016-04-02
• Feature of a modern zoo — 2016-04-01
• Ring around a castle — 2016-03-15
• Feature of the Tokyo Imperial Palace — 2016-02-21
• Defensive ring — 2015-12-06
• Drawbridge locale — 2015-10-04
• Water under the bridge? — 2015-01-30
• Castle defense — 2014-11-25
• Castle protection — 2014-06-10
• Defense against a siege — 2012-11-11
• Protective zoo feature — 2012-06-16
• Castle obstacle — 2012-05-15
• Castle guard — 2011-11-27
• Advanced sandcastle feature — 2011-09-18
• Castle security system — 2009-10-18
• Zoo barrier — 2009-06-09
• Castle defense — 2008-02-05
• Castle protector — 2008-01-15
• Castle defense — 2006-03-14
• Castle protector — 2005-11-07
• A drawbridge may span one — 2005-03-01
• Castle encircler — 2004-04-05
• Palace protector — 2004-01-12
• Castle defense — 2003-07-08
• A drawbridge spans it — 2003-03-05
• Alternative to a fence — 2001-03-22