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For CHSH game, why does the mathematica program gives 75% as the best winning rate when sharing 2 EPR pairs?

I think the problem you're having is with your tensor product structure. If you label the qubits 1 to 4, then your A measurements are on qubits 1 and 2, while your B measurements are on qubits 3 and 4....
DaftWullie's user avatar
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