City of Riga vs City of Berlin
corr corr 1913.??.??
Four Knights Game: Alatortsev Variation 1/2-1/2

City of Kuldiga vs City of Riga
Kuldiga v. Riga match Correspondence 1921.??.??
Ruy Lopez: Bird’s Defense Deferred 0-1

City of Budapest vs City of Riga
Riga v. Budapest Match Correspondence 1937.??.??
Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation 1/2-1/2