Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1910 |
1033 |
1870 | (115) | 3 |
| 1911 |
1056 |
1875 | (112) | 3 |
| 1912 |
1015 |
1890 | (112) | 0 |
| 1913 |
1026 |
1905 | (111) | 0 |
| 1914 |
965 |
1920 | (110) | 0 |
| 1915 |
878 |
1936 | (109) | 0 |
| 1916 |
849 |
1951 | (107) | 0 |
| 1917 |
834 |
1966 | (104) | 0 |
| 1918 |
826 |
1981 | (101) | 0 |
| 1919 |
812 |
1996 | (97) | 0 |
| 1920 |
850 |
2011 | (93) | 0 |
| 1921 |
891 |
2027 | (87) | 0 |
| 1922 |
880 |
2042 | (80) | 0 |
| 1923 |
930 |
2057 | (71) | 0 |
| 1924 |
917 |
2072 | (59) | 20 |
| 1925 |
957 |
2072 | (68) | 0 |
| 1926 |
1011 |
2072 | (74) | 0 |
| 1927 |
1048 |
2073 | (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 |
| |
