Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1901 |
568 |
2074 | (76) | 9 |
| 1902 |
579 |
2073 | (79) | 0 |
| 1903 |
586 |
2072 | (80) | 0 |
| 1904 |
609 |
2071 | (80) | 0 |
| 1905 |
623 |
2070 | (78) | 0 |
| 1906 |
634 |
2070 | (74) | 0 |
| 1907 |
648 |
2069 | (67) | 0 |
| 1908 |
672 |
2068 | (58) | 14 |
| 1909 |
647 |
2093 | (58) | 0 |
| 1910 |
581 |
2118 | (54) | 0 |
| 1911 |
562 |
2143 | (42) | 30 |
| 1912 |
609 |
2116 | (48) | 0 |
| 1913 |
666 |
2090 | (45) | 29 |
| 1914 |
705 |
2069 | (56) | 0 |
| 1915 |
703 |
2048 | (62) | 6 |
| 1916 |
714 |
2038 | (71) | 0 |
| 1917 |
732 |
2028 | (77) | 0 |
| 1918 |
762 |
2018 | (81) | 0 |
| 1919 |
781 |
2009 | (84) | 0 |
| 1920 |
890 |
1999 | (85) | 6 |
| 1921 |
940 |
2005 | (92) | 0 |
| 1922 |
964 |
2011 | (97) | 0 |
| 1923 |
1037 |
2017 | (102) | 0 |
| 1924 |
1055 |
2023 | (106) | 0 |
| 1925 |
1081 |
2029 | (109) | 0 |
| 1926 |
1124 |
2035 | (112) | 0 |
| 1927 |
1148 |
2041 | (114) | 0 |
| 1928 |
1147 |
2047 | (116) | 0 |
| 1929 |
1131 |
2053 | (117) | 0 |
| 1930 |
1151 |
2059 | (118) | 0 |
| 1931 |
1207 |
2065 | (118) | 0 |
| 1932 |
1194 |
2071 | (119) | 0 |
| 1933 |
1203 |
2077 | (119) | 0 |
| 1934 |
1210 |
2083 | (118) | 0 |
| 1935 |
1220 |
2089 | (117) | 0 |
| 1936 |
1170 |
2095 | (116) | 0 |
| 1937 |
1089 |
2101 | (114) | 0 |
| 1938 |
1065 |
2107 | (112) | 0 |
| 1939 |
963 |
2113 | (109) | 0 |
| 1940 |
852 |
2119 | (106) | 0 |
| 1941 |
794 |
2125 | (102) | 0 |
| 1942 |
708 |
2131 | (98) | 0 |
| 1943 |
648 |
2137 | (92) | 0 |
| 1944 |
612 |
2143 | (86) | 0 |
| 1945 |
628 |
2149 | (78) | 0 |
| 1946 |
599 |
2155 | (68) | 0 |
| 1947 |
463 |
2161 | (55) | 30 |
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 |
| |
