104 chess players from Russia have changed their nationality in 2023. The biggest names are Alexandra Kosteniuk, Sanan Sjugirov, Alexey Sarana, Vladimir Fedoseev, Nikita Vitiugov, Alexandr Predke, Kirill Alekseenko, Maksim Chigaev, Alexander Motylev, Anton Demchenko, Pavel Tregubov, Nikita Petrov, Evgeny Alekseev.
88 did it in 2022 including Evgeny Romanov and Alina Kashlinskaya, 10 in 2021.
https://www.sports.ru/chess/1115746343-104-rossijskix-shaxmatista-smenili-grazhdanstvo-v-2023-m-pyatero-peres.html