  The exact fermion master equation previously obtained in [Phys. Rev. B
\textbf{78}, 235311 (2008); New J. Phys. \textbf{12}, 083013 (2010)] describes
the dynamics of quantum states of a principal system of fermionic particles
under the influences of external fermion reservoirs (e.g. nanoelectronic
systems). Here, we present the general solution to this exact fermion master
equation. The solution is analytically expressed in the most intuitive particle
number representation. It is applicable to an arbitrary number of orbitals in
the principal system prepared at arbitrary initial states. We demonstrate the
usefulness of such general solution with the transient dynamics of
nanostructured artificial molecules. We show how various initial states can
lead to distinct transient dynamics, manifesting a multitude of underlying
transition pathways.
