  The behavior of quenched QCD at nonzero chemical potential $\mu$ has been a
long-standing puzzle. An explicit solution is found using the random matrix
approach to chiral symmetry breaking. At nonzero $\mu$ the quenched QCD is not
a simple $n\to0$ limit of a theory with $n$ quarks: a naive `replica trick'
fails. A limit that leads to the quenched QCD is that of a theory with $2n$
quarks: $n$ quarks with original action and $n$ quarks with conjugate action.
