  The center vortex model of quantum chromodynamic states that vortices, closed
color-magnetic flux, percolate the vacuum. Vortices are seen as the relevant
excitations of the vacuum, causing confinement and dynamical chiral symmetry
breaking. In an appropriate gauge, as \textit{direct maximal center gauge},
vortices are detected by projecting onto the center degrees of freedom. Such
gauges suffer from Gribov copy problems: different local maxima of the
corresponding gauge functional can result in different predictions of the
string tension. By using non-trivial center regions, that is, regions whose
boundary evaluates to a non-trivial center element, a resolution of this issue
seems possible. We use such non-trivial center regions to guide simulated
annealing procedures, preventing an underestimation of the string tension in
order to resolve the Gribov copy problem.
