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An answer is a controlled extrapolation of the pairing order parameter from at least two independent methods (DMRG, AFQMC, iPEPS, DMET) with consistent error bars.","problem_ref":null,"references":"","settled_by":"Agreement of independent unbiased methods on the extrapolated d-wave order parameter at $\\delta=1/8$ with error bars smaller than its claimed value.","status_note":"A multi-method study (2020) found filled stripes and no long-range d-wave order for $t' = 0$ at $\\delta = 1/8$; competing uniform superconducting states lie close in energy.","title":"Does the pure square-lattice Hubbard model superconduct at moderate 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