Related Clues:

• Promotion piece?
• Element of an English Opening in chess
• Smallest man on board?
• Vessel holding first of wine, hock
• Man on board’s obscene material spoken of
• Chess piece not allowed to move backward
• Political puppet
• Board member or lowly worker?
• God has secured wife for most vulnerable man
• Deposit (a possession) as security on a loan
• Chess piece that's often the first to be played
• Piece in hand, last of sixteen
• Stooge is a man on board
• Unwitting instrument
• "Foot soldier" on a chessboard