Historical clue formulations

• Used one — 2026-06-10
• Sacrifice in some chess gambits — 2026-04-17
• Chess piece that can be promoted — 2025-09-03
• One making the first move? — 2025-06-27
• Threat to a king, maybe — 2025-04-02
• Lowly chess piece — 2024-07-16
• Chess piece not allowed to move backward — 2023-06-05
• Element of an English Opening in chess — 2022-12-29
• One of 16 on a chessboard — 2022-11-07
• One of 16 in a chess set — 2021-07-26
• "___ Stars" (long-running show in which experts appraise and buy antiques) — 2019-05-28
• Lowly chess piece — 2018-03-19
• Puppet — 2018-03-17
• Get some quick money for, say — 2016-07-28
• Little man — 2016-01-15
• One getting an across-the-board promotion? — 2015-12-26
• One of 16 in a chess set — 2014-04-15
• Future queen, maybe — 2013-11-28
• One with promotional potential — 2013-09-14
• Lowly chess piece — 2012-07-09
• Least powerful member of the board? — 2011-12-02
• Lowly chess piece — 2007-05-07
• Piece in front of a king or queen — 2006-04-03
• One may be placed before a king — 2003-07-27
• Promotable piece — 2003-07-01
• One with a round head — 2003-05-30
• One on the front line — 2002-01-26
• Castle protector, maybe — 2001-08-24
• Board member? — 2001-03-11
• Director's opposite — 2000-12-02
• Future queen? — 2000-01-08
• Frequent chess sacrifice — 1999-11-22
• One on the way to a promotion? — 1999-02-08
• En passant capture — 1998-09-02
• Stooge — 1998-08-23
• Hock — 1997-08-20
• Chess sacrifice, often — 1996-10-14
• Used one — 1996-08-29
• Mere tool — 1995-12-07
• Cat's-paw — 1995-09-07
• Future queen, maybe — 1995-03-17