Problem 411520:
Problem 411520:
GM Vladislav Kovalev (2634) - GM Andrey Esipenko (2720)
FIDE Grand Swiss 2021 Riga LAT, 2021.10.29 Kovalev - Esipenko, Riga 2021
FIDE Grand Swiss 2021 Riga LAT, 2021.10.29 Kovalev - Esipenko, Riga 2021