Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1911 |
833 |
1685 | (140) | 2 |
| 1912 |
783 |
1690 | (138) | 0 |
| 1913 |
748 |
1694 | (135) | 0 |
| 1914 |
705 |
1698 | (132) | 0 |
| 1915 |
645 |
1702 | (128) | 0 |
| 1916 |
639 |
1706 | (125) | 0 |
| 1917 |
645 |
1710 | (121) | 0 |
| 1918 |
650 |
1714 | (116) | 0 |
| 1919 |
645 |
1718 | (111) | 0 |
| 1920 |
731 |
1722 | (105) | 0 |
| 1921 |
783 |
1727 | (99) | 0 |
| 1922 |
714 |
1731 | (92) | 0 |
| 1923 |
760 |
1735 | (83) | 0 |
| 1924 |
835 |
1739 | (73) | 18 |
Rating table notes
|
| Biographical data |
| Name: Cotton, Charlotte Helena Minchin |
| Also known as: Miss Helene Cotton; Charlotte Helena Minchin Cotton |
| Born: 1875 |
| Died: 9 Jan. 1929 |
| |
| Notes: |
| Some sources have 'Miss Selma Cotton' at San Remo 1911, but Winter's Chess Note 11111 makes it clear that this was Helena Cotton. |
|
| |
| References |
| Periodicals |
| [BCM], vol. 28, Sep. 1908, page 376 |
| Web |
| Winter, Edward. [Chess and Women] |
| Winter, Edward. [CN 11101. Miss Cotton] |
| Winter, Edward. [CN 11107. Miss Cotton] |
| Winter, Edward. [CN 11111. Miss Cotton] |
| Winter, Edward. [CN 4838. 'Unofficial European women's champion'] |
| Winter, Edward. [CN 6627. San Remo, 1911] |
| |
