I downloaded and installed python3-pychess_1.0.2-1_all.deb from
https://github.com/pychess/pychess/releases And this version did pull in python3-sqlalchemy as a dependency.
I downloaded and installed python3-pychess_1.0.2-1_all.deb from
https://github.com/pychess/pychess/releases And this version did pull in python3-sqlalchemy as a dependency.