Prepare against Jeroen Van Onzen
NLD · World #16,934 classical · FIDE ID 1012959
Our database contains 55 games by Jeroen Van Onzen, covering Jan 2008 to Jul 2026. Below you'll find Jeroen Van Onzen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jeroen Van Onzen 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 | 2,085 | 2,150 | Nov 2010 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 55 | 19 | 11 | 25 | 34.5% |
| As White | 31 | 9 | 3 | 19 | 29.0% |
| As Black | 24 | 10 | 8 | 6 | 41.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jeroen Van Onzen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jeroen Van Onzen's side.
First moves as White (31 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 30 | 96.8% | 35.0% |
| d4 | 1 | 3.2% | 0.0% |
Main lines as White
- 1.e4 — 97% of White games, 35.0% score
- …c5 (40% of these games) — Onzen usually continues Nf3 (21.4% score)
- …c6 (17% of these games) — Onzen usually continues d4 (33.3% score)
- …d5 (13% of these games) — Onzen usually continues exd5 (75.0% score)
- 1.d4 — 3% of White games, 0.0% score
- …Nf6 (100% of these games) — Onzen usually continues Bg5 (0.0% score)
As Black against 1.e4 (14 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 7 | 50.0% | 78.6% |
| c5 | 5 | 35.7% | 80.0% |
| d5 | 2 | 14.3% | 25.0% |
As Black against 1.d4 (7 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 5 | 71.4% | 30.0% |
| d5 | 2 | 28.6% | 50.0% |
Jeroen Van Onzen's chess games
All 55 games by Jeroen Van Onzen in the Chess.ceo database (Jan 2008 - 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: 19 wins, 11 draws, 25 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B50 | Sicilian | 7 | 1/1/5 | 14.3% |
| B21 | Sicilian: Smith-Morra Gambit | 5 | 1/1/3 | 20.0% |
| B01 | Scandinavian Defense: Main Line | 3 | 2/0/1 | 66.7% |
| C00 | French Defense | 3 | 0/1/2 | 0.0% |
| B10 | Caro-Kann | 2 | 0/0/2 | 0.0% |
| C54 | Italian Game: Classical Variation | 2 | 1/0/1 | 50.0% |
| B12 | Slav Defense | 2 | 1/0/1 | 50.0% |
| C27 | Petrov's Defense | 1 | 0/0/1 | 0.0% |
| B01 | Scandinavian Defense: Modern Variation | 1 | 1/0/0 | 100.0% |
| C55 | Italian Game | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B56 | Sicilian | 3 | 1/2/0 | 33.3% |
| B01 | Scandinavian Defense: Main Line | 2 | 0/1/1 | 0.0% |
| E97 | King's Indian Defense: Orthodox Variation | 2 | 0/2/0 | 0.0% |
| C52 | Italian Game: Evans Gambit | 2 | 1/1/0 | 50.0% |
| C68 | Ruy Lopez: Exchange | 2 | 1/0/1 | 50.0% |
| A15 | English Opening | 2 | 1/0/1 | 50.0% |
| C74 | Ruy Lopez: Steinitz Defense Deferred | 1 | 1/0/0 | 100.0% |
| B98 | Sicilian: Najdorf | 1 | 1/0/0 | 100.0% |
| B33 | Sicilian: Sveshnikov | 1 | 1/0/0 | 100.0% |
| D45 | Slav Defense | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jun 2020 | Eelco Kuipers | 2,316 | Apeldoorn Lichess Blitz Inv | B07 |
| Oct 2007 | Ihor Lewyk | 2,105 | 33rd Guernsey Open | B21 |
| Oct 2007 | Adrian O Pickersgill | 2,088 | 33rd Guernsey Open | B01 |
| Oct 2007 | JW. Kamps | 2,077 | 33rd Guernsey Open | C74 |
| Jul 2018 | Timo Konnen | 1,875 | 15th South Wales Open | B01 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-NED U20 Open | 2000 | 9 | 4.5 | 2,294 |
| Hengelo U20 Open | 2001 | 9 | 5 | 2,276 |
| 15th South Wales Open | 2018 | 8 | 3.5 | 1,974 |
| Maastricht Limburg Open | 2008 | 7 | 3 | 2,099 |
| 33rd Guernsey Open | 2007 | 7 | 4.5 | 2,328 |
| 10th Haarlem AKN Open | 2001 | 5 | 2 | 2,204 |
| Apeldoorn Lichess Blitz Inv | 2020 | 4 | 2 | 2,395 |
| Arnhem OSKA Open | 2005 | 3 | 0 | 1,813 |
Interactive opening tree from all 55 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jeroen Van Onzen's chess games?
55 games by Jeroen Van Onzen, from Jan 2008 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 Jeroen Van Onzen has played.
What does Jeroen Van Onzen play on the first move as White?
Across 31 games with White in our database, Jeroen Van Onzen opens with 1.e4 (97% of games), 1.d4 (3% of games). Against 1.e4 as Black, Jeroen Van Onzen answers 1...e5 (50% of games), 1...c5 (36% of games), 1...d5 (14% of games). Against 1.d4: 1...Nf6 (71% of games), 1...d5 (29% of games).
What openings does Jeroen Van Onzen play as White?
As White, Jeroen Van Onzen's most-played openings in our database are: Sicilian (7 games, 14.3% win rate); Sicilian: Smith-Morra Gambit (5 games, 20.0% win rate); Scandinavian Defense: Main Line (3 games, 66.7% win rate). The full breakdown of 31 games with White is in the table above.
What openings does Jeroen Van Onzen play as Black?
As Black, Jeroen Van Onzen most often plays: Sicilian (3 games, 33.3% win rate); Scandinavian Defense: Main Line (2 games, 0.0% win rate); King's Indian Defense: Orthodox Variation (2 games, 0.0% win rate). See the table above for the top ten Black openings across 24 games.
What is Jeroen Van Onzen's FIDE rating?
Jeroen Van Onzen is currently rated 2,085 in classical chess. Peak classical rating: 2,150 (Nov 2010).
How many games has Jeroen Van Onzen played?
Our database contains 55 games by Jeroen Van Onzen, covering Jan 2008 to Jul 2026. Overall record: 19 wins, 11 draws, 25 losses (34.5% win rate).
How do I prepare against Jeroen Van Onzen?
55 games by Jeroen Van Onzen 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.