Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1911 |
994 |
1774 | (84) | 2 |
| 1912 |
947 |
1781 | (74) | 11 |
| 1913 |
950 |
1782 | (80) | 0 |
| 1914 |
879 |
1783 | (84) | 0 |
| 1915 |
806 |
1784 | (87) | 0 |
| 1916 |
820 |
1786 | (88) | 0 |
| 1917 |
826 |
1787 | (88) | 0 |
| 1918 |
838 |
1788 | (87) | 0 |
| 1919 |
827 |
1789 | (85) | 0 |
| 1920 |
920 |
1790 | (81) | 0 |
| 1921 |
984 |
1791 | (75) | 0 |
| 1922 |
924 |
1792 | (67) | 0 |
| 1923 |
1002 |
1793 | (56) | 11 |
| 1924 |
1088 |
1776 | (53) | 20 |
| 1925 |
1089 |
1764 | (62) | 0 |
| 1926 |
1106 |
1751 | (67) | 0 |
| 1927 |
1092 |
1739 | (69) | 0 |
| 1928 |
1046 |
1727 | (67) | 11 |
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, no. 9, 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] |
| |
