Historical clue formulations

• Chess piece: Abbr. — 2015-07-30
• Piece next to a bishop: Abbr. — 2013-12-17
• Tilting figure: Abbr. — 2013-11-08
• Chess piece: Abbr. — 2012-06-07
• Chess piece: Abbr. — 2008-11-30
• Chess piece: Abbr. — 2008-06-29
• Round Table title: Abbr. — 2005-12-06
• Old Eng. title — 1999-03-11