Puzzle 100154:
Puzzle 100154:
GM Kirill Alekseenko (2704) - GM Andrey Rychagov (2545)
World Blitz 2019 Moscow RUS, 2019.12.30 Alekseenko - Rychagov, Moscow 2019
World Blitz 2019 Moscow RUS, 2019.12.30 Alekseenko - Rychagov, Moscow 2019