Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1901 |
914 |
1835 | (75) | 10 |
| 1902 |
890 |
1844 | (73) | 0 |
| 1903 |
864 |
1853 | (68) | 0 |
| 1904 |
892 |
1862 | (60) | 26 |
| 1905 |
919 |
1870 | (66) | 0 |
| 1906 |
902 |
1878 | (68) | 7 |
| 1907 |
891 |
1899 | (74) | 0 |
| 1908 |
872 |
1920 | (78) | 0 |
| 1909 |
925 |
1941 | (80) | 8 |
Rating table notes
|
| Biographical data |
| Name: Valk, G. |
| Born: |
| Died: |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1901-1920, page 319 |
| Thulin, Name index to CTC, page 282 |
| |
