Mezue ahịrịokwu na-esonụ: Ọ na-egwuri egwu maka Switzerland na
2nd Chess Olympiad na The Hague 1928, ebe o tinyere akara dị mma nke +5 <unk>1 =5 (68.2%) wee were ihe nrite nke 6th. Ọ gwakwara na 4th Chess Olympiad na Prague 1931. O jikọtara 9-12 na Bern 1932 (Alexander Alekhine meriri).