Multiple choice
Execute the circuit and measure. How likely is the outcome |10⟩?
const c = circuit(2); c.h(0); c.h(1); // oracle: mark |10⟩ by temporarily flipping qubit 1 c.x(1); c.cz(0, 1); c.x(1); // diffuser c.h(0); c.h(1); c.x(0); c.x(1); c.cz(0, 1); c.x(0); c.x(1); c.h(0); c.h(1); return c;
Commit your prediction for P(|10⟩) — then run it.