Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1929 |
1379 |
1947 | (83) | 11 |
| 1930 |
1337 |
1978 | (85) | 0 |
| 1931 |
1352 |
2009 | (86) | 0 |
| 1932 |
1280 |
2039 | (85) | 0 |
| 1933 |
1196 |
2070 | (83) | 0 |
| 1934 |
1106 |
2100 | (80) | 0 |
| 1935 |
1029 |
2131 | (75) | 0 |
| 1936 |
836 |
2162 | (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 |
| |
