We study divisors in giving rise to pairs of nonisomorphic, derived equivalent, and -equivalent K3 surfaces of degree . In particular, we confirm the existence of such fourfolds as predicted recently by Kuznetsov and Shinder.
"Equivalence of K3 surfaces from Verra threefolds." Kyoto J. Math. 60 (4) 1209 - 1226, December 2020. https://doi.org/10.1215/21562261-2019-0059