Ratings
Year |
Rank |
Edo |
Dev. |
Games |
1925 |
1242 |
1938 | (74) | 7 |
1926 |
1273 |
1950 | (72) | 0 |
1927 |
1288 |
1961 | (67) | 6 |
1928 |
1246 |
1969 | (67) | 10 |
Rating table notes
|
Biographical data |
Name: Okker, I.H. |
Born: |
Died: |
|
|
References |
Books |
Di Felice, Chess Results, 1921-1930, page 333 |
Thulin, Name index to CTC, page 193 |
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