Puzzle 199535:
Puzzle 199535:
GM Alexei Shirov (2647) - GM K2 Grigoryan (2658)
I Chess in a Rook 2020 Paterna ESP (6), 2020.10.01 Shirov - Grigoryan, Paterna 2020
I Chess in a Rook 2020 Paterna ESP (6), 2020.10.01 Shirov - Grigoryan, Paterna 2020