Midnight Code Cup Judge 🌛 (the most crazy event I was part of), 2025
European Championship Judge (EUC), 2025
Open Olympiad in Informatics (
Chief Judge in 2022, 2021, 2020;
Council Chief Judge in 2019)
All-Russian Olympiad Judge (2019)
St. Petersburg School Team Olympiad in Informatics (Judge
2020,
2019,
2018,
2017)
EJOI 2018 Judge
And there were more