  The phenomenon of diquark condensation at non-zero baryon density and zero
temperature is analyzed in the strong coupling limit of lattice QCD. The
results indicate that there is attraction in the quark-quark channel also at
strong coupling, and that the attraction is more effective at high baryon
density, but for infinite coupling it is not enough to produce diquark
condensation. It is argued that the absence of diquark condensation is not a
peculiarity of the strong coupling limit, but persists at sufficiently large
finite couplings.
