Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1911 |
1043 |
1782 | (83) | 2 |
| 1912 |
1002 |
1788 | (74) | 11 |
| 1913 |
1016 |
1789 | (80) | 0 |
| 1914 |
944 |
1790 | (84) | 0 |
| 1915 |
876 |
1791 | (86) | 0 |
| 1916 |
870 |
1792 | (88) | 0 |
| 1917 |
876 |
1794 | (88) | 0 |
| 1918 |
893 |
1795 | (87) | 0 |
| 1919 |
890 |
1796 | (84) | 0 |
| 1920 |
978 |
1797 | (81) | 0 |
| 1921 |
1041 |
1798 | (75) | 0 |
| 1922 |
990 |
1799 | (67) | 0 |
| 1923 |
1111 |
1800 | (56) | 11 |
| 1924 |
1182 |
1782 | (53) | 20 |
| 1925 |
1207 |
1770 | (62) | 0 |
| 1926 |
1244 |
1757 | (67) | 0 |
| 1927 |
1248 |
1745 | (68) | 0 |
| 1928 |
1216 |
1732 | (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] |
| |
