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.
Grzegorz Kapustka. Michał Kapustka. Riccardo Moschetti. "Equivalence of K3 surfaces from Verra threefolds." Kyoto J. Math. 60 (4) 1209 - 1226, December 2020. https://doi.org/10.1215/21562261-2019-0059