Klub szachistów - Elenco
Andrzej Łapicki
Wacław Urbin
Maria Ciesielska
Iza
Ignacy Machowski
Man introducing Urbin
Mieczysław Pawlikowski
Henryk Radek
Seweryn Butrym
Club Member
Andrzej Krasicki
Club Member
Wiktor Nanowski
Club Member
Zofia Niwińska
Aleksandra Leszczyńska
Dudek's Mother
Wanda Elbińska
Leon Pietraszkiewicz
Traders' Union Chairman
Maciej Maciejewski
Mayor
Tadeusz Surowa
Club Member
Maria Homerska
Woman talking with Urbin (uncredited)
Bogumił Kobiela
Dudek (uncredited)