Historical clue formulations

• Middle X or O — 2025-04-23
• Tic follower — 2025-04-13
• Part of OOO — 2024-11-22
• The second O of O-O-O — 2024-11-11
• O-O-O part — 2024-03-28
• See 65-Down — 2023-11-09
• Tic-___-toe — 2023-07-31
• Tic-___ — 2023-07-26
• Part of X-X-X — 2023-03-31
• "Tic ___ Dough" (bygone game show) — 2023-03-21
• Tic-___-toe — 2023-01-23
• Central square, perhaps — 2022-02-12
• X in XXX, maybe — 2021-06-10
• Tic-___-toe — 2021-04-12
• Toe preceder — 2021-04-02
• Middle of a certain three-in-a-row — 2020-10-04
• Washington's Sea-___ Airport — 2020-08-09
• Middle X or O — 2020-03-04
• Part of a three-in-a-row — 2019-08-11
• Sea-___ (Washington airport) — 2019-01-23
• Middle X or O — 2016-12-25
• Game center? — 2015-04-05
• Sea-___ — 2014-10-31
• Part of a winning combination — 2014-07-27
• Middle square, maybe — 2014-04-04
• Tic ___ (candy) — 2014-01-05
• Tie ___ — 2014-01-04
• What X-O-X lacks? — 2013-09-22
• Washington's Sea-___ Airport — 2013-06-27
• Tic ___ (breath mint) — 2013-01-22
• See 23-Across — 2012-08-09
• Certain X or O — 2011-09-02
• Sea-___ Airport — 2011-06-16
• One-third of a game win — 2010-10-24
• Certain X or O — 2009-11-29
• Middle X, say — 2008-09-25
• Certain X or O — 2008-04-20
• Tic-___-toe — 2008-02-04
• Central square, maybe — 2007-08-04
• X-X-X part — 2007-03-28
• Tic ___ (mint) — 2007-01-02
• Part of a winning combination — 2006-09-10
• Middle square, say — 2006-03-18
• Middle O of O-O-O — 2006-02-07
• XXX part — 2005-03-06
• Tic-___-toe — 2004-11-08
• Wash. State's Sea-___ Airport — 2004-09-05
• Middle X or O — 2004-05-25
• Tic-___-toe — 2004-03-01
• Center X or O — 2004-02-24