10.26165/JUELICH-DATA/O3EAHV Teller, Justus0000-0003-0032-4200(Peter Grünberg Institute 9)Schäfer, Christian0009-0007-0692-1205(Peter Grünberg Institute 9)Moors, Kristof0000-0002-8682-5286(Peter Grünberg Institute 9)Bennemann, Benjamin(Peter Grünberg Institute 10)Lyatti, Matvey0000-0003-0837-4886(Peter Grünberg Institute 9)Lentz, Florian0000-0002-8716-6446(Helmholtz Nano Facility)Grützmacher, Detlev0000-0001-6290-9672}(Peter Grünberg Institute 9)Riwar, Roman-Pascal0000-0002-0402-1090(Peter Grünberg Institute 2)Schäpers, Thomas0000-0001-7861-5003(Peter Grünberg Institute 9) Jülich DATA 2025 Data sets used for the figures in the manuscript. Abstract We study the frustration pattern of a square lattice with in-situ fabricated Nb-Pt-Nb four-terminal Josephson junctions. The four-terminal geometry gives rise to a checker board pattern of alternating fluxes f, f' piercing the plaquettes, which stabilizes the Berezinskii-Kosterlitz-Thouless transition even at irrational flux quanta per plaquette, due to an unequal repartition of integer flux sum f+f' into alternating plaquettes. This type of frustrated frustration manifests as a beating pattern of the dc resistance, with state configurations at the resistance dips gradually changing between the conventional zero-flux and half-flux states. Hence, the four-terminal Josephson junction array offers a promising platform to study previously unexplored flux and vortex configurations, and provides an estimate on the spatial expansion of the four-terminal Josephson junction central weak link area. Schäpers, Thomas(Peter Grünberg Institute 9)