Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1923 |
1248 |
1933 | (195) | 1 |
Rating table notes
|
| Biographical data |
| Name: Bertsch, R.K.A. |
| Born: |
| Died: |
|
| |
| References |
| Books |
| de Lint, 10-Jahrig Bestaan van den N.I.S.B., page 10, 69 |
| Periodicals |
| [HNNI], vol. 29, no. 96, 24 Apr. 1924, page 9 |
| |
