Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1920 |
277 |
2220 | (75) | 7 |
| 1921 |
226 |
2252 | (72) | 0 |
| 1922 |
184 |
2284 | (67) | 0 |
| 1923 |
128 |
2315 | (59) | 9 |
| 1924 |
100 |
2341 | (54) | 22 |
Rating table notes
|
| Biographical data |
| Name: Zimmerman, Otto |
| Born: 11 Sep. 1892 |
| Died: 24 July 1979 |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1901-1920, page 274 |
| Di Felice, Chess Results, 1921-1930, page 342 |
| Gaige, Chess Personalia, page 479 |
| Skinner and Verhoeven, Alexander Alekhine's Chess Games, page 143 |
| Thulin, Name index to CTC, page 306 |
| |
