Prepare against Koen Haast
NLD · World #22,196 classical · FIDE ID 1025198
Our database contains 45 games by Koen Haast, covering Jan 2007 to Jul 2026. Below you'll find Koen Haast's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Koen Haast 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 | 2,039 | 2,095 | Apr 2022 |
| Blitz | 2,156 | 2,231 | Jun 2016 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 45 | 18 | 14 | 13 | 40.0% |
| As White | 22 | 9 | 8 | 5 | 40.9% |
| As Black | 23 | 9 | 6 | 8 | 39.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Koen Haast's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Koen Haast's side.
First moves as White (22 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 20 | 90.9% | 60.0% |
| e4 | 2 | 9.1% | 50.0% |
Main lines as White
- 1.d4 — 91% of White games, 60.0% score
- …d5 (60% of these games) — Haast usually continues Nf3 (80.0% score)
- …Nf6 (25% of these games) — Haast usually continues c4 (25.0% score)
- …b6 (5% of these games) — Haast usually continues Nf3 (100.0% score)
- 1.e4 — 9% of White games, 50.0% score
- …c5 (50% of these games) — Haast usually continues Nf3 (0.0% score)
- …Nf6 (50% of these games) — Haast usually continues e5 (100.0% score)
As Black against 1.e4 (18 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 10 | 55.6% | 35.0% |
| c6 | 7 | 38.9% | 78.6% |
| e6 | 1 | 5.6% | 50.0% |
As Black against 1.d4 (5 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 4 | 80.0% | 62.5% |
| c6 | 1 | 20.0% | 0.0% |
Koen Haast's chess games
All 45 games by Koen Haast in the Chess.ceo database (Jan 2007 - 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: 18 wins, 14 draws, 13 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D02 | Queen's Pawn Game | 5 | 2/3/0 | 40.0% |
| D02 | London System | 3 | 2/1/0 | 66.7% |
| B14 | Queen's Gambit Accepted | 2 | 2/0/0 | 100.0% |
| D80 | Grünfeld Defense | 1 | 0/0/1 | 0.0% |
| D02 | Horwitz Defense | 1 | 0/0/1 | 0.0% |
| D03 | Indian Defense | 1 | 0/1/0 | 0.0% |
| E97 | King's Indian Defense: Orthodox Variation | 1 | 0/1/0 | 0.0% |
| D53 | Queen's Gambit | 1 | 0/0/1 | 0.0% |
| E12 | Queen's Gambit Declined: Orthodox Defense | 1 | 0/0/1 | 0.0% |
| B46 | Sicilian | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B39 | Sicilian: Accelerated Dragon | 3 | 0/1/2 | 0.0% |
| B22 | Sicilian: Hyperaccelerated Dragon | 3 | 1/1/1 | 33.3% |
| B13 | Caro-Kann: Exchange Variation | 2 | 1/0/1 | 50.0% |
| B18 | Caro-Kann: Classical | 2 | 1/1/0 | 50.0% |
| D35 | Indian Defense | 2 | 1/0/1 | 50.0% |
| B10 | Caro-Kann | 2 | 2/0/0 | 100.0% |
| B06 | Sicilian: Alapin | 1 | 0/1/0 | 0.0% |
| B26 | Sicilian: Closed | 1 | 1/0/0 | 100.0% |
| B52 | Sicilian: Moscow Variation | 1 | 0/0/1 | 0.0% |
| D10 | Slav Defense | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2006 | Henrik Porte | 2,147 | 10th Vlissingen HZ Open | D21 |
| Jul 2006 | Pim Ydo | 2,085 | Haarlem Nova College Open | D03 |
| Aug 2005 | Roland Ten Have | 1,761 | Hengelo U16 Open | B26 |
| Aug 2005 | Maarten Van Zetten | 1,628 | Hengelo U16 Open | B02 |
| Aug 2005 | Jasper Lauwers | 1,616 | Hengelo U16 Open | B14 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Hengelo U14 Open | 2004 | 16 | 10 | – |
| Hengelo U16 Open | 2005 | 9 | 6 | 1,805 |
| ch-Brabant U12 | 2000 | 7 | 4 | – |
| 10th Vlissingen HZ Open | 2006 | 6 | 2 | 2,079 |
| Haarlem Nova College Open | 2006 | 3 | 1 | 1,962 |
| 4th La Fere Open | 2005 | 2 | 0.5 | 1,890 |
| Arnhem OSKA Open | 2005 | 2 | 1.5 | 2,026 |
Interactive opening tree from all 45 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Koen Haast's chess games?
45 games by Koen Haast, from Jan 2007 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 Koen Haast has played.
What does Koen Haast play on the first move as White?
Across 22 games with White in our database, Koen Haast opens with 1.d4 (91% of games), 1.e4 (9% of games). Against 1.e4 as Black, Koen Haast answers 1...c5 (56% of games), 1...c6 (39% of games), 1...e6 (6% of games). Against 1.d4: 1...d5 (80% of games), 1...c6 (20% of games).
What openings does Koen Haast play as White?
As White, Koen Haast's most-played openings in our database are: Queen's Pawn Game (5 games, 40.0% win rate); London System (3 games, 66.7% win rate); Queen's Gambit Accepted (2 games, 100.0% win rate). The full breakdown of 22 games with White is in the table above.
What openings does Koen Haast play as Black?
As Black, Koen Haast most often plays: Sicilian: Accelerated Dragon (3 games, 0.0% win rate); Sicilian: Hyperaccelerated Dragon (3 games, 33.3% win rate); Caro-Kann: Exchange Variation (2 games, 50.0% win rate). See the table above for the top ten Black openings across 23 games.
What is Koen Haast's FIDE rating?
Koen Haast is currently rated 2,039 in classical chess and 2,156 in blitz. Peak classical rating: 2,095 (Apr 2022).
How many games has Koen Haast played?
Our database contains 45 games by Koen Haast, covering Jan 2007 to Jul 2026. Overall record: 18 wins, 14 draws, 13 losses (40.0% win rate).
How do I prepare against Koen Haast?
45 games by Koen Haast 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.