Stepan Erdelyi vs Hermanis Karlovich Mattison
Prague Olympiad Prague CSR round 10 1931.07.18
Nimzo-Indian Defense: Normal Variation, Botvinnik System 1-0

Paul Vaitonis vs Stepan Erdelyi
Warsaw Olympiad Warsaw POL round 12 1935.08.25
Slav Defense: Alapin Variation 1/2-1/2

Hans Christian Christoffersen vs Stepan Erdelyi
Prague Olympiad Prague CSR round 19 1931.07.26
Sicilian Defense: Scheveningen Variation, Classical Variation 1-0