  We introduce in supersymmetric QCD with $N_f<N$ additional meson singlet
degrees of freedom made of $2N_f-2$ supermultiplets. We construct an
alternative superpotential with $N_f^2$ constraints and show its consistency.
Based on this superpotential we prove that for $\frac{N}{2}<N_f<N$ the
supersymmetry is unbroken whereas for $N_f\leq\frac{N}{2}$ is dynamically
broken.
