[en] It is discussed a confining quantum chromodynamics (CQCD) involving quarks, vector gluons and color scalar fields on the basis of the four-dimensional framework of common relativity and the principle of inherent probability for field oscillators. The quantum of the color scalar field, called ''chromom'', is a massless spin-zero tachyon and is crucial for quark confinement. In order to understand permanent confinement of quarks within perturbative framework, the chromom should be a massless tachyon with the energy p₀ = (p² -delta²)sup(1/2) and the static propagator involving 1/(p² -delta²), where delta → 0. And it should also have a special inherent probability amplitude Ssup(1/2)(p) 1/[exp[Isub(s)G(p)/2] - 1] for its field oscillators. Such a Bose-type distribution S(p) differs from the universal distribution P(p, m) for the oscillators of all other physical fields (e.g., quark, vector gluons, leptons) and leads to an asymptotically linear potential. In CQCD, the vector gluons have nothing to do with quark confinement and need not be massless. Such a covariant CQCD is unitary and invariant under global gauge transformation. The theory possesses a superasymptotic freedom and is finite