Related Clues:

• Soldier for the king
• Ward denizen
• Lowly chessman
• Captive
• Like some audiences
• One may stand in front of a queen
• Piece in front of a king or queen
• See 17 Across
• Give as security, in a way
• One of 16 chess pieces
• Part of a chess set
• Minor chess piece
• Unwitting participant
• Exploited one
• Chess soldier