Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1924 |
810 |
2092 | (60) | 20 |
| 1925 |
853 |
2090 | (68) | 0 |
| 1926 |
895 |
2089 | (74) | 0 |
| 1927 |
932 |
2087 | (77) | 6 |
Rating table notes
|
| Biographical data |
| Name: de Haas, Efraim |
| Born: 28 Nov. 1887 |
| Died: 1943 |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1921-1930, page 321 |
| Gaige, Chess Personalia, page 88, 158 |
| Thulin, Name index to CTC, page 99 |
| |
