  We consider several patchy particle models that have been proposed in
literature and we investigate their candidate crystal structures in a
systematic way. We compare two different algorithms for predicting crystal
structures: (i) an approach based on Monte Carlo simulations in the
isobaric-isothermal ensemble and (ii) an optimization technique based on ideas
of evolutionary algorithms. We show that the two methods are equally successful
and provide consistent results on crystalline phases of patchy particle
systems.
