Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1901 |
556 |
2082 | (76) | 9 |
| 1902 |
582 |
2081 | (79) | 0 |
| 1903 |
586 |
2080 | (80) | 0 |
| 1904 |
608 |
2079 | (80) | 0 |
| 1905 |
623 |
2078 | (78) | 0 |
| 1906 |
629 |
2077 | (74) | 0 |
| 1907 |
640 |
2077 | (67) | 0 |
| 1908 |
668 |
2076 | (58) | 14 |
| 1909 |
641 |
2101 | (58) | 0 |
| 1910 |
574 |
2126 | (53) | 0 |
| 1911 |
560 |
2151 | (42) | 30 |
| 1912 |
609 |
2124 | (48) | 0 |
| 1913 |
676 |
2098 | (45) | 29 |
| 1914 |
704 |
2077 | (56) | 0 |
| 1915 |
704 |
2056 | (62) | 6 |
| 1916 |
712 |
2046 | (70) | 0 |
| 1917 |
730 |
2037 | (77) | 0 |
| 1918 |
758 |
2027 | (81) | 0 |
| 1919 |
785 |
2018 | (84) | 0 |
| 1920 |
890 |
2008 | (85) | 6 |
| 1921 |
942 |
2015 | (91) | 0 |
| 1922 |
968 |
2022 | (97) | 0 |
| 1923 |
1049 |
2029 | (102) | 0 |
| 1924 |
1059 |
2035 | (105) | 0 |
| 1925 |
1081 |
2042 | (109) | 0 |
| 1926 |
1119 |
2049 | (111) | 0 |
| 1927 |
1156 |
2056 | (114) | 0 |
| 1928 |
1154 |
2063 | (115) | 0 |
| 1929 |
1136 |
2069 | (117) | 0 |
| 1930 |
1133 |
2076 | (118) | 0 |
| 1931 |
1194 |
2083 | (118) | 0 |
| 1932 |
1191 |
2090 | (118) | 0 |
| 1933 |
1179 |
2097 | (118) | 0 |
| 1934 |
1179 |
2103 | (118) | 0 |
| 1935 |
1188 |
2110 | (117) | 0 |
| 1936 |
1128 |
2117 | (115) | 0 |
| 1937 |
1048 |
2124 | (114) | 0 |
| 1938 |
1027 |
2131 | (111) | 0 |
| 1939 |
935 |
2137 | (109) | 0 |
| 1940 |
806 |
2144 | (105) | 0 |
| 1941 |
745 |
2151 | (101) | 0 |
| 1942 |
673 |
2158 | (97) | 0 |
| 1943 |
626 |
2165 | (91) | 0 |
| 1944 |
591 |
2171 | (84) | 0 |
| 1945 |
599 |
2178 | (76) | 0 |
| 1946 |
570 |
2185 | (66) | 0 |
| 1947 |
507 |
2192 | (52) | 31 |
Rating table notes
|
| Biographical data |
| Name: Isakov, Konstantin Ivanovich |
| Born: |
| Died: |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1901-1920, page 307 |
| Di Felice, Chess Results, 1947-1950, page 462 |
| Gaige, Chess Personalia, page 187 |
| Skinner and Verhoeven, Alexander Alekhine's Chess Games, page 17, 19 |
| Thulin, Name index to CTC, page 118 |
| |
