  We report a three-dimensional numerical implementation of multiconfiguration
time-dependent Hartree-Fock (MCTDHF) based on a multi-resolution Cartesian
grid, with no need to assume any symmetry of molecular structure. We
successfully compute high-harmonic generation (HHG) of H2 and H2O. The present
implementation will open a way to the first-principle theoretical study of
intense-field and attosecond-pulse induced ultrafast phenomena in general
molecules.
