chess amateur player and arbiter (regional class), in chess.com superadmin of Team Warsaw (since Nov 2018), admin of Vatican City team (Jan-Dec 2018)
Klubi
Liga Team Poland
287 dalībnieki
Middle-earth
176 dalībnieki
Team Warsaw
76 dalībnieki
World Cities League HQ
564 dalībnieki
World League Headquarters
658 dalībnieki