Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1935 |
647 |
2196 | (56) | 4 |
| 1936 |
677 |
2176 | (41) | 36 |
| 1937 |
662 |
2167 | (48) | 0 |
| 1938 |
653 |
2158 | (47) | 8 |
| 1939 |
453 |
2204 | (44) | 24 |
| 1940 |
337 |
2202 | (54) | 0 |
| 1941 |
228 |
2201 | (58) | 12 |
Rating table notes
|
| Biographical data |
| Name: Koomen, Willem |
| Also known as: Koomen, Wim |
| Born: |
| Died: |
|
| |
| References |
| Books |
| Di Felice, Chess Results, 1931-1935, page 280 |
| Di Felice, Chess Results, 1936-1940, page 361 |
| Di Felice, Chess Results, 1941-1946, page 347 |
| Skinner and Verhoeven, Alexander Alekhine's Chess Games, page 579 |
| Web |
| Bartelski, Wojciech. [unofficial Chess Olympiad: Munich 1936 - Netherlands] |
| |
