Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1935 |
1089 |
2128 | (49) | 13 |
| 1936 |
983 |
2142 | (41) | 27 |
| 1937 |
1032 |
2123 | (47) | 11 |
| 1938 |
1034 |
2123 | (57) | 0 |
| 1939 |
954 |
2124 | (63) | 0 |
| 1940 |
844 |
2125 | (64) | 0 |
| 1941 |
799 |
2126 | (61) | 11 |
| 1942 |
721 |
2131 | (73) | 0 |
| 1943 |
658 |
2136 | (82) | 0 |
| 1944 |
633 |
2141 | (90) | 0 |
| 1945 |
652 |
2146 | (96) | 0 |
| 1946 |
619 |
2151 | (101) | 2 |
Rating table notes
|
| Biographical data |
| Name: Koska, Josef |
| Born: 1 July 1910 |
| Died: 13 Dec. 1988 |
|
| |
| 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 |
| Web |
| [Josef Koska] |
| |
