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)
क्लब
Liga Team Poland
287 सदस्य
Middle-earth
176 सदस्य
Team Warsaw
76 सदस्य
World Cities League HQ
565 सदस्य
World League Headquarters
665 सदस्य