Koomen, Willem




Ratings

Year       Rank    Edo    Dev.   Games 
1935  711  2199 (55) 4
1936  779  2179 (40) 36
1937  772  2171 (48) 0
1938  804  2164 (45) 8
1939  543  2215 (41) 24
1940  449  2229 (49) 0
1941  393  2243 (48) 13
1942  333  2255 (53) 0
1943  302  2267 (52) 7
1944  320  2255 (52) 7
1945  409  2225 (55) 0
1946  482  2195 (52) 18

Rating table notes

Biographical data
Name: Koomen, Willem  
   Also known as: Koomen, Wim
Born: 26 Apr. 1909
Died: 1989
 
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]
   [Willem Koomen]
Match data  (f=formal; c=casual; s=soft)

Koomen, W. - Kramer, H. (2) 1939         (f)     5   -   5

Tournament data

Amsterdam 1935     Amsterdam Tournament     3  /  4
Amsterdam 1936 (1)     Amsterdam Tournament     2.5  /  7
Rotterdam 1936     10th Netherlands Championship     3.5  /  9
Munich 1936     Unofficial Olympiad     10.5  /  17
Amsterdam 1936 (2)     Amsterdam ASB Tournament - Group 1     0.5  /  3
Amsterdam 1938 (1)     Max Euwe Club Jubilee Tournament     2  /  9
Amsterdam 1939 (1)     Amsterdam Tournament     1  /  5
Brussels 1939     Belgium - Holland Team Match    
  Koomen, W. - Sapira, E.J.     2 - 0    
Amsterdam 1939 (3)     VVGA Tournament     3.5  /  7
Beverwijk 1941 (2)     4th Hoogoven Tournament - Group B     2.5  /  3
Baarn 1941 (1)     Baarn-Soest Masters Tournament     2.5  /  7
Amsterdam 1941     Weenink Memorial Tournament     1  /  3
Beverwijk 1943     6th Hoogoven Tournament     5  /  7
Beverwijk 1944 (1)     7th Hoogoven Tournament - Group A     4.5  /  7
Beverwijk 1946     8th Hoogoven Tournament - Group 1     3.5  /  9
Breda 1946     Netherlands - Belgium Match    
  Koomen, W. - Lemaire, R.     1.5 - 0.5    
Leiden 1946 (3)     14th Netherlands Championship - Semi-Finals, Group 3     1.5  /  7

Player information updated: 17 Jul. 2025