Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1920 |
272 |
2225 | (73) | 7 |
| 1921 |
233 |
2255 | (70) | 0 |
| 1922 |
199 |
2286 | (64) | 0 |
| 1923 |
138 |
2316 | (54) | 9 |
| 1924 |
125 |
2331 | (48) | 22 |
| 1925 |
129 |
2296 | (55) | 11 |
Rating table notes
|
| Biographical data |
| Name: Zimmermann, 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, 253 |
| Thulin, Name index to CTC, page 306 |
| |
