Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1935 |
1015 |
2122 | (50) | 13 |
| 1936 |
901 |
2136 | (41) | 27 |
| 1937 |
934 |
2118 | (47) | 11 |
| 1938 |
918 |
2119 | (58) | 0 |
| 1939 |
840 |
2119 | (63) | 0 |
| 1940 |
719 |
2120 | (64) | 0 |
| 1941 |
668 |
2120 | (62) | 11 |
| 1942 |
589 |
2125 | (73) | 0 |
| 1943 |
527 |
2130 | (82) | 0 |
| 1944 |
505 |
2135 | (90) | 0 |
| 1945 |
507 |
2139 | (96) | 0 |
| 1946 |
459 |
2144 | (101) | 2 |
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 |
| |
