Puzzle 452578:
Puzzle 452578:
GM Kacper Piorun (2640) - GM Boris Gelfand (2663)
World Blitz 2021 Warsaw POL, 2021.12.30 Piorun - Gelfand, Warsaw 2021
World Blitz 2021 Warsaw POL, 2021.12.30 Piorun - Gelfand, Warsaw 2021