His best achievements were two winnings in The Hague (1928, 1929),[4] joint second place, behind Mir Sultan Khan, at Cambridge 1932, the second place in Dutch Chess Championship at The Hague/Leiden 1933, and winning at Amsterdam 1936.[5] He also took 3rd at Amsterdam 1938 (NED-ch), 3rd at Delft 1940 (Quadrangular), 4th at Baarn 1941, and 9th at Amsterdam 1954 (NED-ch).
He played in several matches: won against Rudolf Loman (4-2) at The Hague 1927, lost to Willem Fick (1-3) at The Hague 1930, lost to George Salto Fontein (2-3) at The Hague 1930, lost to Salo Flohr (2-6) at The Hague 1932, drew with Rudolf Spielmann (2-2) at Amsterdam 1934, lost to Max Euwe (0-6) at Amsterdam 1934, drew with Salo Landau (5-5) at Amsterdam 1934, and drew with Henny van Oosterom (3-3) at Hilversum 1961/62.[6]
He also participated in friendly matches: The Netherlands – England in 1939, The Netherlands – England in 1947, The Netherlands – England in 1949.[7]