Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1910 |
1072 |
1866 | (106) | 3 |
| 1911 |
1083 |
1874 | (102) | 3 |
| 1912 |
1048 |
1894 | (100) | 0 |
| 1913 |
1056 |
1913 | (98) | 0 |
| 1914 |
978 |
1933 | (95) | 0 |
| 1915 |
888 |
1953 | (92) | 0 |
| 1916 |
865 |
1972 | (87) | 0 |
| 1917 |
829 |
1992 | (81) | 6 |
| 1918 |
813 |
2005 | (82) | 0 |
| 1919 |
786 |
2018 | (82) | 0 |
| 1920 |
833 |
2031 | (81) | 0 |
| 1921 |
877 |
2044 | (78) | 0 |
| 1922 |
884 |
2057 | (74) | 0 |
| 1923 |
935 |
2070 | (67) | 0 |
| 1924 |
928 |
2083 | (57) | 20 |
| 1925 |
980 |
2082 | (66) | 0 |
| 1926 |
1024 |
2081 | (73) | 0 |
| 1927 |
1065 |
2081 | (77) | 6 |
Rating table notes
|
| Biographical data |
| Name: de Haas, Efraim |
| Born: 28 Nov. 1887 |
| Died: 1943 |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1901-1920, page 303 |
| Di Felice, Chess Results, 1921-1930, page 321 |
| Gaige, Chess Personalia, page 88, 158 |
| Thulin, Name index to CTC, page 99 |
| |
