Ratings 
  
  | Year       | 
  Rank   | 
   Edo    | 
  Dev.   | 
  Games  | 
 
  | 1933  | 
  1256  | 
  2062 |  (67) |   15 | 
 
  | 1934  | 
  1261  | 
  2073 |  (73) |   0 | 
 
  | 1935  | 
  1249  | 
  2084 |  (76) |   0 | 
 
  | 1936  | 
  1174  | 
  2094 |  (78) |   0 | 
 
  | 1937  | 
  1075  | 
  2105 |  (78) |   0 | 
 
  | 1938  | 
  1023  | 
  2116 |  (76) |   1 | 
 
  | 1939  | 
  911  | 
  2125 |  (74) |   0 | 
 
  | 1940  | 
  799  | 
  2134 |  (70) |   0 | 
 
  | 1941  | 
  723  | 
  2143 |  (63) |   7 | 
 
  | 1942  | 
  615  | 
  2159 |  (64) |   9 | 
 
  
Rating table notes
 
 | 
| Biographical data |  
   | Name: Kopetzky, Karl   | 
 
   | Born: 15 Mar. 1909 | 
 
   | Died:  | 
 
|   |  
   | Notes: | 
 
   | Feenstra Kuiper has 'Kopecky' at Vienna 1933. Di Felice has 'Kopetzky, Karl' there and 'Kopecky' as a separate player. | 
 
  |  
|   |  
   | References | 
 
| Books |  
   |    Di Felice, Chess Results, 1931-1935, page 390 | 
 
   |    Di Felice, Chess Results, 1941-1946, page 347 | 
 
   |    Feenstra Kuiper, 100 Jahre Schachturniere, page 139 | 
 
   |    Gaige, Chess Personalia, page 222 | 
 
 
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