Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1928 |
904 |
2095 | (74) | 11 |
| 1929 |
907 |
2103 | (76) | 0 |
| 1930 |
913 |
2111 | (76) | 0 |
| 1931 |
931 |
2118 | (74) | 0 |
| 1932 |
906 |
2126 | (69) | 0 |
| 1933 |
909 |
2134 | (63) | 0 |
| 1934 |
885 |
2142 | (52) | 14 |
| 1935 |
608 |
2211 | (50) | 11 |
| 1936 |
538 |
2225 | (54) | 0 |
| 1937 |
477 |
2239 | (51) | 0 |
| 1938 |
425 |
2252 | (41) | 30 |
| 1939 |
472 |
2225 | (47) | 13 |
| 1940 |
442 |
2220 | (59) | 0 |
| 1941 |
418 |
2214 | (67) | 0 |
| 1942 |
392 |
2208 | (71) | 0 |
| 1943 |
382 |
2203 | (73) | 0 |
| 1944 |
381 |
2197 | (72) | 0 |
| 1945 |
398 |
2191 | (69) | 0 |
| 1946 |
383 |
2186 | (64) | 14 |
Rating table notes
|
| Biographical data |
| Name: Zefirov, Sergey Sergeevich |
| Born: 1905 |
| Died: 1955 |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1921-1930, page 211 |
| Di Felice, Chess Results, 1931-1935, page 410 |
| Di Felice, Chess Results, 1936-1940, page 379 |
| Di Felice, Chess Results, 1941-1946, page 294 |
| Gaige, Chess Personalia, page 477 |
| Gaige, Chess Tournament Crosstables IV, page 812 |
| |
