  We propose an accurate and convenient method to achieve 100\% discrimination
of chiral molecules with Lewis-Riesenfeld invariant. By reversely designing the
pulse scheme of handed resolution, we obtain the parameters of the three-level
Hamiltonians to achieve this goal. For the same initial state, we can
completely transfer its population to one energy level for left-handed
molecules, while transfer it to another energy level for right-handed
molecules. Moreover, this method can be further optimized when errors exist,
and it shows that the optimal method are more robust against these errors than
the counterdiabatic and original invariant-based shortcut schemes. This
provides an effective, accurate, and robust method to distinguish the
handedness of molecules.
