Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1929 |
1465 |
1958 | (83) | 11 |
| 1930 |
1409 |
1989 | (85) | 0 |
| 1931 |
1415 |
2019 | (86) | 0 |
| 1932 |
1359 |
2050 | (85) | 0 |
| 1933 |
1262 |
2081 | (83) | 0 |
| 1934 |
1167 |
2111 | (80) | 0 |
| 1935 |
1070 |
2142 | (75) | 0 |
| 1936 |
873 |
2172 | (68) | 13 |
Rating table notes
|
| Biographical data |
| Name: Kostrov |
| Born: |
| Died: |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1921-1930, page 247 |
| Di Felice, Chess Results, 1936-1940, page 58 |
| Gaige, Chess Tournament Crosstables IV, page 858 |
| |
