GHZ Paradox: Three-Qubit Entanglement Beats Local Realism (2D)

This 2D simulator renders three qubits entangled into a Greenberger-Horne-Zeilinger state, (|000⟩ + |111⟩)/√2 — the natural next step beyond a two-qubit Bell pair. Pick one of four operator settings (XXX, XYY, YXY, YYX), fire a measurement, and watch the three-way product come out exactly as quantum mechanics demands every single time. Then try to beat it: assign fixed hidden values to every qubit's X and Y outcome and search for a combination that satisfies all four settings at once. It cannot be done — the best any predetermined assignment reaches is 3 of 4, while the entangled state gets all 4 with certainty, no statistics required.