Overloaded Defending Pieces

Overloaded defensive pieces are pieces that are trying to protect two different pieces. An overloaded piece can be exploited in two ways: (1) exchange the overloaded piece, and the two other pieces might be hanging pieces, or (2) divert the overloaded piece by exchanging one of the pieces its protecting, forcing the overloaded piece to give up protection of the other piece (so that second piece becomes a loose piece).