Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1935 |
1006 |
2120 | (50) | 13 |
| 1936 |
898 |
2133 | (42) | 27 |
| 1937 |
933 |
2111 | (48) | 11 |
| 1938 |
930 |
2105 | (58) | 0 |
| 1939 |
831 |
2099 | (64) | 0 |
| 1940 |
689 |
2093 | (66) | 0 |
| 1941 |
629 |
2088 | (64) | 11 |
Rating table notes
|
| Biographical data |
| Name: Koska, Josef |
| Born: 1 July 1910 |
| Died: |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1931-1935, page 278 |
| Di Felice, Chess Results, 1936-1940, page 361 |
| Di Felice, Chess Results, 1941-1946, page 347 |
| Gaige, Chess Personalia, page 224 |
| |
