Historical clue formulations

• Corral — 2020-10-18
• Restrict — 2020-06-09
• Coop up — 2020-05-20
• Leave no way out for — 2018-07-12
• Leave no escape for — 2016-06-22
• Encircle — 2016-03-28
• Encircle — 2010-09-05
• Encircle — 2009-01-13
• Surround — 2006-11-08
• Confine — 2003-02-13
• Encircle — 2002-03-10
• Restrict — 1999-07-29
• Confine — 1998-07-26
• Encircle — 1998-02-18
• Encircle — 1995-09-14
• Cut off from escape — 1994-03-31