e/Undermining (chess)

Information
has gloss	eng: Undermining (also known as Removal of the Guard) is a chess tactic in which a defensive piece is captured, leaving one of the opponent's pieces undefended or underdefended. The opponent has the unpalatable choice between recapturing or saving the underdefended piece. When using this tactic, however, one should keep in mind that the opponent can sometimes sacrifice the piece whose defence is being undermined before capturing the piece which just took the defender.
lexicalization	eng: Undermining
instance of	e/Chess tactics