Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1935 |
656 |
2198 | (56) | 4 |
| 1936 |
700 |
2178 | (40) | 36 |
| 1937 |
688 |
2171 | (48) | 0 |
| 1938 |
686 |
2164 | (46) | 8 |
| 1939 |
445 |
2216 | (43) | 24 |
| 1940 |
327 |
2229 | (51) | 0 |
| 1941 |
244 |
2242 | (52) | 12 |
| 1942 |
150 |
2257 | (62) | 0 |
| 1943 |
81 |
2271 | (67) | 7 |
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] |
| |
