Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1935 |
769 |
2119 | (52) | 13 |
| 1936 |
708 |
2127 | (45) | 27 |
| 1937 |
644 |
2106 | (53) | 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 |
| Gaige, Chess Personalia, page 224 |
| |
