Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1921 |
953 |
2015 | (79) | 7 |
| 1922 |
1065 |
1989 | (80) | 0 |
| 1923 |
1230 |
1963 | (79) | 0 |
| 1924 |
1297 |
1938 | (77) | 11 |
Rating table notes
|
| Biographical data |
| Name: de Boer, J.J. |
| Born: |
| Died: |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1921-1930, page 321 |
| Thulin, Name index to CTC, page 33 |
| |
