  Competitive effects of nuclear deformation and density dependence of
$\Lambda\!N$-interaction in $\Lambda$ binding energies $B_\Lambda$ of
hypernuclei are studied systematically on the basis of the baryon-baryon
interaction model ESC including many-body effects. By using the $\Lambda\!N$
G-matrix interaction derived from ESC, we perform microscopic calculations of
$B_\Lambda$ in $\Lambda$ hypernuclei within the framework of the
antisymmetrized molecular dynamics under the averaged-density approximation.
The calculated values of $B_\Lambda$ reproduce experimental data within a few
hundred keV in the wide mass regions from 9 to 51. It is found that competitive
effects of nuclear deformation and density dependence of
$\Lambda\!N$-interaction work decisively for fine tuning of $B_\Lambda$ values.
