Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1911 |
947 |
1695 | (140) | 2 |
| 1912 |
877 |
1699 | (137) | 0 |
| 1913 |
881 |
1704 | (134) | 0 |
| 1914 |
802 |
1708 | (131) | 0 |
| 1915 |
735 |
1712 | (128) | 0 |
| 1916 |
729 |
1717 | (124) | 0 |
| 1917 |
741 |
1721 | (120) | 0 |
| 1918 |
737 |
1726 | (116) | 0 |
| 1919 |
726 |
1730 | (111) | 0 |
| 1920 |
832 |
1734 | (105) | 0 |
| 1921 |
838 |
1739 | (99) | 0 |
| 1922 |
769 |
1743 | (91) | 0 |
| 1923 |
821 |
1748 | (83) | 0 |
| 1924 |
895 |
1752 | (72) | 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] |
| |
