Ratings
| Year |
Rank |
Edo |
Dev. |
Games |
| 1935 |
652 |
2198 | (56) | 4 |
| 1936 |
702 |
2178 | (40) | 36 |
| 1937 |
687 |
2172 | (48) | 0 |
| 1938 |
688 |
2166 | (46) | 8 |
| 1939 |
448 |
2218 | (42) | 24 |
| 1940 |
329 |
2235 | (50) | 0 |
| 1941 |
252 |
2252 | (50) | 13 |
| 1942 |
168 |
2269 | (57) | 0 |
| 1943 |
127 |
2285 | (59) | 7 |
| 1944 |
103 |
2284 | (65) | 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] |
| |
