UNBLOX (UNiform BLOck CROSSover)

UNBLOX is a two-dimensional 'wrap-around' operator.

Taken from: Cartwright, H.M. and Harris S.P. - The Application of the Genetic Algorithm to Two-Dimensional Strings: The Source Apportionment Problem. Presented at the International Conference on Genetic Algorithms, Urbana-Champaign, Illinois, 1993.