NetherlandsNED
ID: 1098934

Willem De Koster

FIDE ratings

1,760Classical
1,786Blitz

Performance

50 games
28% Win
28% Draw
44% Loss

Willem De Koster's playing style

Overall score:42%14W 14D 22L over 50 games
Best with 1.e4 as White:46%in 23 games
Steady recent form:45%6W 6D 8L in last 20 games

Openings as White

Among the openings shown, Sicilian Defense: Alapin Variation has the largest White sample, with 5 games. Select a row to explore its moves and inspect example games below.

Sicilian Defense: Alapin Variation
20%
20%
60%
5g
Sicilian Defense: Alapin Variation, Barmen Defense
33%
33%
33%
3g
French Defense: Winawer Variation, Alekhine-Maróczy Gambit
50%
50%
2g
Alekhine Defense: Modern Variation, Flohr Variation
100%
1g
Scotch Game: Classical Variation
100%
1g

Openings as Black

Among the openings shown, Petrov's Defense: Nimzowitsch Attack has the largest Black sample, with 2 games. These results describe the available sample, not a prediction of the player’s next choice.

Petrov's Defense: Nimzowitsch Attack
50%
50%
2g
Petrov's Defense: Classical Attack
50%
50%
2g
Queen's Gambit Declined: Normal Defense
100%
1g
Scotch Game
100%
1g
Petrov's Defense: Three Knights Game
100%
1g

Repertoire

23 games as white in scope
8
7
6
5
4
3
2
a1
b
c
d
e
f
g
h
Move arrowsfrequency, not engine evaluation

Starting position

23 games in this line · White to move

Results for De Koster, Willem as white · Wins / Draws / Losses

W / D / L
30%
30%
39%
Move
23 · 100%
30%
30%
39%

Game History

(50 games)
DateSourceColorOpponentResultLink
Sep 9, 2006
OTB - MillionBase2.9
Vitri, Sergio(2105)
D—
Sep 8, 2006
OTB - PGN-Mentor
Cozzarin, Davide(2062)
D—
Sep 7, 2006
OTB - PGN-Mentor
Capaliku, Aleks
W—
Sep 6, 2006
OTB - PGN-Mentor
Brunello, Roberta(1863)
D—
Sep 5, 2006
OTB - PGN-Mentor
FMRamesa, Davor(2249)
L—
Sep 4, 2006
OTB - PGN-Mentor
IMMazi, Leon(2350)
D—
Sep 3, 2006
OTB - MillionBase2.9
Cadelli, Luciano(2088)
W—
Sep 3, 2006
OTB - MillionBase2.9
Fantini, Marco(2053)
D—
Sep 2, 2006
OTB - PGN-Mentor
Plani, Andrea(1896)
D—
Feb 12, 2006
OTB - PGN-Mentor
GMJanssen, Ruud(2499)
L—

Research Willem De Koster’s games and opening repertoire

Willem De Koster is rated 1760 in standard, 1786 in blitz by FIDE. Willem De Koster plays for Netherlands.

Willem De Koster has FIDE ID 1098934.

Check the official FIDE record for ratings and identity. It is not a complete archive of game moves.

Use the openings as White and Black to identify recurring choices in the available games. Follow a branch into the repertoire explorer and inspect example games in the game history. Dates, time controls and sources affect which patterns are relevant to your next match.

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