Then Equation 3, with 2C* replaced by 4C*, can be used to eliminate vertices in the same way as before, eliminating a vertex z in a particular graph part if Fz, the value of its best adjacent dstar, is insufficient considering best possible contributions from all other graph parts. For best pruning results the value of C* should be as high as possible; we choose C* as the clique weight induced by the best overall dstar.