Illustration of the matching procedure performance in the case of a test cluster (z = 0.285, M = 10^14.04 M_⊙), for two algorithms for which the galaxy membership probability was available (AMICO on the top and sFoF on the bottom panel). The true cluster galaxies, known from the mock, are given in purple. The cluster galaxies identified as members by the cluster finders are given in yellow (only galaxies with P_i >  0.25 are shown for clarity), with a cross on top in case they are true cluster members. The target mock cluster is given as a blue cross. All the candidate clusters that lie within the association volume are given as green squares, with a cross on top of the one that is the best match. The black circle represents θ₂₀₀. In the case of sFoF, 17 one-way geometrical associations would be possible (number of green squares), highlighting a large fragmentation rate.