CHSH Bell Inequality Tester

E(a,b) = −cos(a−b) for the singlet. Drag Alice and Bob's angles — find the configuration that pushes |S| above 2 and toward 2√2 ≈ 2.828.
Alice's angles
0°
90°
Bob's angles
45°
315°
2.828
CHSH S value  |  LHV bound ±2  |  Tsirelson ±2√2 = ±2.828
E(a₁,b₁) = −0.707
E(a₁,b₂) = −0.707
E(a₂,b₁) = −0.707
E(a₂,b₂) = 0.707
Click Random Search to find max |S|