Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1902 |
182 |
2287 | (35) | 62 |
| 1903 |
185 |
2289 | (51) | 0 |
| 1904 |
195 |
2291 | (59) | 0 |
| 1905 |
199 |
2293 | (62) | 9 |
| 1906 |
197 |
2295 | (71) | 0 |
| 1907 |
205 |
2297 | (77) | 0 |
| 1908 |
213 |
2299 | (81) | 0 |
| 1909 |
217 |
2301 | (84) | 0 |
| 1910 |
210 |
2303 | (85) | 0 |
| 1911 |
213 |
2304 | (84) | 0 |
| 1912 |
206 |
2306 | (83) | 0 |
| 1913 |
198 |
2308 | (80) | 0 |
| 1914 |
186 |
2310 | (75) | 22 |
Rating table notes
|
| Biographical data |
| Name: Piotrowski, Oskar |
| Born: |
| Died: |
| |
| Notes: |
| The Berliner Schachverband website has 'Pietrowski', but on it's Café Kerkau page, Hoppe suggests that 'O. Piotrowski' is correct. |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1901-1920, page 313 |
| Thulin, Name index to CTC, page 203, 204 |
| Web |
| Hoppe, Frank. [Chronik des Jahres 1902] (broken) |
| Hoppe, Frank. [Freies Turnier im Café Kerkau] (broken) |
| Lissowski, Tomasz. [Szachiści a Sprawa Niepodległości Polski] |
| |
