Prepare against Wim Koster
NLD · World #13,070 classical · FIDE ID 1006509
Our database contains 66 games by Wim Koster, covering Apr 2003 to Jul 2026. Below you'll find Wim Koster's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Wim Koster before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 2,127 | 2,266 | Apr 2003 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 66 | 23 | 18 | 25 | 34.8% |
| As White | 30 | 12 | 9 | 9 | 40.0% |
| As Black | 36 | 11 | 9 | 16 | 30.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Wim Koster's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Wim Koster's side.
First moves as White (30 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 29 | 96.7% | 55.2% |
| d4 | 1 | 3.3% | 50.0% |
Main lines as White
- 1.e4 — 97% of White games, 55.2% score
- …c5 (48% of these games) — Koster usually continues c3 (37.5% score)
- …e5 (21% of these games) — Koster usually continues Nf3 (58.3% score)
- …e6 (17% of these games) — Koster usually continues d4 (70.0% score)
- 1.d4 — 3% of White games, 50.0% score
- …Nf6 (100% of these games) — Koster usually continues Nf3 (50.0% score)
As Black against 1.e4 (19 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 13 | 68.4% | 57.7% |
| d5 | 4 | 21.1% | 75.0% |
| Nf6 | 2 | 10.5% | 50.0% |
As Black against 1.d4 (11 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 9 | 81.8% | 11.1% |
| d5 | 2 | 18.2% | 50.0% |
Wim Koster's chess games
All 66 games by Wim Koster in the Chess.ceo database (Apr 2003 - Jul 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 23 wins, 18 draws, 25 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B22 | Sicilian: Alapin | 8 | 2/2/4 | 25.0% |
| B21 | Sicilian: Smith-Morra Gambit | 3 | 1/1/1 | 33.3% |
| C01 | French: Exchange Variation | 2 | 2/0/0 | 100.0% |
| B01 | Scotch Game | 2 | 2/0/0 | 100.0% |
| C47 | Four Knights Game: Scotch Variation | 2 | 1/0/1 | 50.0% |
| C15 | French: Winawer Variation | 2 | 1/0/1 | 50.0% |
| B90 | Sicilian: Najdorf | 2 | 2/0/0 | 100.0% |
| B01 | Scandinavian Defense: Modern Variation | 1 | 1/0/0 | 100.0% |
| B90 | Sicilian: Dragon | 1 | 0/1/0 | 0.0% |
| E32 | Queen's Indian Defense | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C42 | Petrov's Defense | 6 | 3/1/2 | 50.0% |
| B01 | Scandinavian Defense: Modern Variation | 4 | 3/0/1 | 75.0% |
| D36 | Indian Defense | 3 | 0/2/1 | 0.0% |
| A16 | English Opening | 3 | 0/1/2 | 0.0% |
| B05 | Alekhine Defense | 2 | 1/0/1 | 50.0% |
| C80 | Ruy Lopez: Open | 2 | 1/0/1 | 50.0% |
| D70 | Grünfeld Defense | 2 | 0/1/1 | 0.0% |
| C47 | Four Knights Game | 1 | 0/1/0 | 0.0% |
| A25 | English Opening: Reverse Sicilian | 1 | 0/0/1 | 0.0% |
| C22 | Center Game | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2000 | Zoltan Nemeth | 2,308 | Budapest FS10 IM-B | B22 |
| Oct 2005 | Michael Ewaldt | 2,099 | Hamburg Junge Open | C42 |
| Aug 2003 | Dietmar Guski | 2,091 | 14th Vienna Open | B22 |
| Sep 2006 | Luciano Cadelli | 2,088 | 8th Trieste Open | B01 |
| Aug 2003 | Daniel Koffler | 2,071 | 14th Vienna Open | C42 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Budapest FS10 IM-B | 2000 | 10 | 3 | 2,127 |
| 8th Trieste Open | 2006 | 9 | 5 | 2,127 |
| 14th Vienna Open | 2003 | 9 | 5 | 2,138 |
| Hamburg Junge Open | 2005 | 9 | 4 | 2,052 |
| Robecchetto Open 3rd | 1991 | 8 | 8 | – |
| Guernsey Open | 1990 | 7 | 4 | 2,367 |
| ch-RSB | 1998 | 3 | 1.5 | 2,095 |
| 28th Seville Open | 2003 | 2 | 0 | 2,060 |
Interactive opening tree from all 66 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Wim Koster's chess games?
66 games by Wim Koster, from Apr 2003 to Jul 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Wim Koster has played.
What does Wim Koster play on the first move as White?
Across 30 games with White in our database, Wim Koster opens with 1.e4 (97% of games), 1.d4 (3% of games). Against 1.e4 as Black, Wim Koster answers 1...e5 (68% of games), 1...d5 (21% of games), 1...Nf6 (11% of games). Against 1.d4: 1...Nf6 (82% of games), 1...d5 (18% of games).
What openings does Wim Koster play as White?
As White, Wim Koster's most-played openings in our database are: Sicilian: Alapin (8 games, 25.0% win rate); Sicilian: Smith-Morra Gambit (3 games, 33.3% win rate); French: Exchange Variation (2 games, 100.0% win rate). The full breakdown of 30 games with White is in the table above.
What openings does Wim Koster play as Black?
As Black, Wim Koster most often plays: Petrov's Defense (6 games, 50.0% win rate); Scandinavian Defense: Modern Variation (4 games, 75.0% win rate); Indian Defense (3 games, 0.0% win rate). See the table above for the top ten Black openings across 36 games.
What is Wim Koster's FIDE rating?
Wim Koster is currently rated 2,127 in classical chess. Peak classical rating: 2,266 (Apr 2003).
How many games has Wim Koster played?
Our database contains 66 games by Wim Koster, covering Apr 2003 to Jul 2026. Overall record: 23 wins, 18 draws, 25 losses (34.8% win rate).
How do I prepare against Wim Koster?
66 games by Wim Koster reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.