The Three Regionals Cup 2021 started in December 2021. There are 3 virtual contests: Belarus and Baltic, Northwestern Russia and Moscow Regionals of NERC 2021. Teams participated in the regionals may count their regional result as the result of the corresponging stage. For summary is used the same GP100 scoring, as for Opencup.

For each stage there are two links: for passport (Yandex) logins and for pregenerated (for example, Opencup ones).