sixth at Carlsbad 1907, third at Prague 1908, first at Gothenburg 1909 (the 7th Nordic Chess Championship), second at San Sebastián 1911 with Akiba Rubinstein behind José Raúl Capablanca, first at Budapest 1912, second at Mannheim 1914, first at Vienna and Berlin in 1918, second at Košice 1928, third at London 1922, shared first with Alexander Alekhine at Hastings 1925/26, third at Semmering 1926, fourth at New York 1927, fourth at London 1927, shared fifth at Carlsbad 1929, tied for 4–7th at Bled 1931, tied for 3–6th at Stuttgart 1939, second behind Max Euwe at Budapest 1940, first at Basel 1952.
Leta 1948 je osnoval Inštitut za elektrotehniko, ki danes nosi njegovo ime.