  Let $V$ be a $6$-dimensional complex vector space with an involution $\sigma$
of trace $0$, and let $W \subseteq \operatorname{Sym}^2 V^\vee$ be a generic
$3$-dimensional subspace of $\sigma$-invariant quadratic forms. To these data
we can associate an Enriques surface as the $\sigma$-quotient of the complete
intersection of the quadratic forms in $W$. We exhibit noncommutative
Deligne-Mumford stacks together with Brauer classes whose derived categories
are equivalent to those of the Enriques surfaces. This provides a more
accessible treatment of Theorem 6.16 in
https://www.ams.org/journals/jams/2021-34-02/S0894-0347-2021-00963-3/ .
