  Quantum mechanics allows systems to be entangled with each other, which
results in stronger than classical correlations. Many methods of identifying
entanglement have been proposed over years, most of which are based on
violating some statistical inequalities. In this work we extend the idea due to
Hardy, in which entanglement is not identified with use of statistical
inequalities, but by simultaneous satisfaction of certain conditions. We show
that the new variant of the Hardy paradox relying on marginal probabilities can
be resolved only by true multipartite entangled states. Also, the state
resolving this paradox for given local measurements is pure and unique in case
of qubit collections.
