Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1902 |
210 |
2270 | (37) | 50 |
| 1903 |
217 |
2271 | (52) | 0 |
| 1904 |
230 |
2272 | (60) | 0 |
| 1905 |
234 |
2273 | (64) | 9 |
| 1906 |
242 |
2269 | (73) | 0 |
| 1907 |
258 |
2265 | (81) | 0 |
| 1908 |
276 |
2262 | (86) | 0 |
| 1909 |
289 |
2258 | (90) | 0 |
| 1910 |
284 |
2254 | (93) | 0 |
| 1911 |
305 |
2250 | (95) | 0 |
| 1912 |
310 |
2247 | (96) | 0 |
| 1913 |
319 |
2243 | (96) | 0 |
| 1914 |
314 |
2239 | (95) | 6 |
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] |
| |
