Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1901 |
562 |
2079 | (76) | 9 |
| 1902 |
582 |
2078 | (79) | 0 |
| 1903 |
586 |
2078 | (80) | 0 |
| 1904 |
611 |
2077 | (80) | 0 |
| 1905 |
622 |
2076 | (78) | 0 |
| 1906 |
631 |
2075 | (74) | 0 |
| 1907 |
639 |
2074 | (67) | 0 |
| 1908 |
665 |
2073 | (58) | 14 |
| 1909 |
642 |
2098 | (58) | 0 |
| 1910 |
575 |
2123 | (54) | 0 |
| 1911 |
558 |
2148 | (42) | 30 |
| 1912 |
607 |
2121 | (48) | 0 |
| 1913 |
664 |
2095 | (45) | 29 |
| 1914 |
700 |
2073 | (56) | 0 |
| 1915 |
704 |
2052 | (62) | 6 |
| 1916 |
712 |
2042 | (71) | 0 |
| 1917 |
733 |
2032 | (77) | 0 |
| 1918 |
765 |
2022 | (81) | 0 |
| 1919 |
789 |
2012 | (84) | 0 |
| 1920 |
897 |
2002 | (85) | 6 |
| 1921 |
949 |
2008 | (92) | 0 |
| 1922 |
979 |
2014 | (97) | 0 |
| 1923 |
1053 |
2020 | (102) | 0 |
| 1924 |
1071 |
2026 | (106) | 0 |
| 1925 |
1102 |
2032 | (109) | 0 |
| 1926 |
1136 |
2038 | (112) | 0 |
| 1927 |
1166 |
2044 | (114) | 0 |
| 1928 |
1159 |
2050 | (116) | 0 |
| 1929 |
1153 |
2056 | (117) | 0 |
| 1930 |
1176 |
2062 | (118) | 0 |
| 1931 |
1224 |
2068 | (118) | 0 |
| 1932 |
1223 |
2074 | (119) | 0 |
| 1933 |
1224 |
2080 | (118) | 0 |
| 1934 |
1235 |
2085 | (118) | 0 |
| 1935 |
1240 |
2091 | (117) | 0 |
| 1936 |
1193 |
2097 | (116) | 0 |
| 1937 |
1115 |
2103 | (114) | 0 |
| 1938 |
1084 |
2109 | (112) | 0 |
| 1939 |
988 |
2115 | (109) | 0 |
| 1940 |
859 |
2121 | (106) | 0 |
| 1941 |
795 |
2127 | (102) | 0 |
| 1942 |
714 |
2133 | (98) | 0 |
| 1943 |
651 |
2139 | (92) | 0 |
| 1944 |
620 |
2145 | (86) | 0 |
| 1945 |
633 |
2151 | (78) | 0 |
| 1946 |
602 |
2157 | (68) | 0 |
| 1947 |
468 |
2163 | (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 |
| |
