| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1925 | 1442 | 1864 | (96) | 5 |  
  | 1926 | 1519 | 1866 | (96) | 0 |  
  | 1927 | 1522 | 1869 | (95) | 0 |  
  | 1928 | 1521 | 1871 | (94) | 0 |  
  | 1929 | 1530 | 1874 | (92) | 0 |  
  | 1930 | 1556 | 1876 | (88) | 9 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Chojnowski, Stanisław |  
   | Born: |  
   | Died: |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1921-1930, page 294 |  | Periodicals |  
   | [IT], no. 27, 4 July 1925, page 13 |  |  |