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A 2020 result proved these give different correlations, but no explicit example is known.","posed_since":"","precise":"MIP* = RE (Ji, Natarajan, Vidick, Wright, Yuen, arXiv:2001.04383) implies a nonlocal game $G$ with finite inputs and outputs whose commuting-operator value $w_{qc}(G)$ exceeds its tensor-product value $w_{q}(G)$, resolving Tsirelson's problem negatively. Construct an explicit $G$, state its input size and gap, and certify $w_{qc}(G) > w_{q}(G)$.","problem_ref":null,"references":"","settled_by":"An explicit game with a certified upper bound on $w_q$ below a certified commuting-operator strategy value.","status_note":"Existence follows from $\\mathrm{MIP}* = \\mathrm{RE}$ (2020); no explicit separating game was found in the literature checked.","title":"Explicit Bell game separating commuting-operator and tensor-product quantum 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