Prepare against Jan-Willem De Jong
IM · NLD · World #1,535 classical · FIDE ID 1008641
When preparing against Jan-Willem De Jong, expect 1.d4 in 76% of White games. Against 1.e4 the reply is 1...e5 (73% of games); against 1.d4, 1...Nf6 (63%). Lowest win rate among frequent openings: Ruy Lopez: Open as Black, 5.0% over 20 games.
Our database contains 595 games by Jan-Willem De Jong, covering Apr 2003 to Jul 2026. Below you'll find Jan-Willem De Jong's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jan-Willem De Jong 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 | 2,408 | 2,479 | Oct 2008 |
| Blitz | 2,368 | 2,408 | Sep 2023 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 595 | 209 | 237 | 149 | 35.1% |
| As White | 291 | 116 | 113 | 62 | 39.9% |
| As Black | 304 | 93 | 124 | 87 | 30.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jan-Willem De Jong's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jan-Willem De Jong's side.
First moves as White (291 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 222 | 76.3% | 59.0% |
| e4 | 48 | 16.5% | 61.5% |
| c4 | 13 | 4.5% | 65.4% |
| Nf3 | 8 | 2.7% | 43.8% |
Main lines as White
- 1.d4 — 76% of White games, 59.0% score
- …Nf6 (51% of these games) — Jong usually continues c4 (58.7% score)
- …d5 (29% of these games) — Jong usually continues c4 (56.9% score)
- …d6 (5% of these games) — Jong usually continues Nf3 (64.3% score)
- 1.e4 — 16% of White games, 61.5% score
- …c5 (46% of these games) — Jong usually continues Nf3 (63.6% score)
- …e5 (29% of these games) — Jong usually continues Nf3 (69.2% score)
- …c6 (8% of these games) — Jong usually continues d4 (50.0% score)
As Black against 1.e4 (159 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 116 | 73.0% | 49.1% |
| Nf6 | 19 | 11.9% | 42.1% |
| c5 | 17 | 10.7% | 44.1% |
| c6 | 4 | 2.5% | 87.5% |
| e6 | 2 | 1.3% | 25.0% |
| d6 | 1 | 0.6% | 50.0% |
As Black against 1.d4 (91 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 57 | 62.6% | 59.6% |
| d5 | 34 | 37.4% | 55.9% |
Jan-Willem De Jong's chess games
All 595 games by Jan-Willem De Jong 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: 209 wins, 237 draws, 149 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D46 | Slav Defense | 34 | 10/18/6 | 29.4% |
| D35 | Indian Defense | 27 | 9/11/7 | 33.3% |
| A57 | Benoni Defense | 23 | 11/7/5 | 47.8% |
| E94 | King's Indian Defense: Orthodox Variation | 20 | 8/9/3 | 40.0% |
| E32 | Nimzo-Indian: Classical Variation | 20 | 8/9/3 | 40.0% |
| E20 | Nimzo-Indian: Kmoch Variation | 14 | 5/6/3 | 35.7% |
| D90 | Grünfeld Defense | 12 | 1/5/6 | 8.3% |
| A81 | Dutch Defense | 11 | 4/6/1 | 36.4% |
| D34 | Queen's Gambit Declined | 9 | 4/3/2 | 44.4% |
| A85 | Horwitz Defense | 6 | 1/3/2 | 16.7% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D12 | Slav Defense | 24 | 7/11/6 | 29.2% |
| D91 | Grünfeld Defense | 22 | 8/6/8 | 36.4% |
| C83 | Ruy Lopez: Open | 20 | 1/12/7 | 5.0% |
| C55 | Italian Game | 20 | 7/8/5 | 35.0% |
| B02 | Alekhine Defense | 19 | 2/12/5 | 10.5% |
| C45 | Scotch Game | 18 | 7/7/4 | 38.9% |
| D85 | Indian Defense | 15 | 5/7/3 | 33.3% |
| C77 | Ruy Lopez: Morphy Defense | 12 | 3/4/5 | 25.0% |
| C91 | Ruy Lopez: Closed | 11 | 4/5/2 | 36.4% |
| B82 | Sicilian: Najdorf | 9 | 4/3/2 | 44.4% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Apr 2008 | Sergei Tiviakov | 2,634 | ch-NED 63 | E38 |
| May 2012 | Jan Smeets | 2,620 | NED Cup | C96 |
| Mar 2012 | Sipke Ernst | 2,581 | chT-NED 1112 | E32 |
| Oct 2007 | Leif Erlend Johannessen | 2,536 | 23rd EU-Cup | D45 |
| Oct 2024 | J Stocek | 2,501 | 39th ECC Open | E32 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Hengelo U16 Open | 1997 | 18 | 11.5 | – |
| ch-NED U14 | 1998 | 16 | 8 | – |
| 73rd Tata Steel C | 2011 | 13 | 4 | 2,358 |
| Olomouc Valoz Cup | 2003 | 11 | 3.5 | 2,163 |
| ch-NED 63 | 2008 | 11 | 4 | 2,433 |
| chT-NED 0910 | 2010 | 9 | 3 | 2,276 |
| 1st Leros Artemis Cup | 2009 | 9 | 5.5 | 2,398 |
| Antwerp | 2007 | 9 | 7 | 2,565 |
Interactive opening tree from all 595 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jan-Willem De Jong's chess games?
595 games by Jan-Willem De Jong, 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 Jan-Willem De Jong has played.
What does Jan-Willem De Jong play on the first move as White?
Across 291 games with White in our database, Jan-Willem De Jong opens with 1.d4 (76% of games), 1.e4 (16% of games), 1.c4 (4% of games). Against 1.e4 as Black, Jan-Willem De Jong answers 1...e5 (73% of games), 1...Nf6 (12% of games), 1...c5 (11% of games). Against 1.d4: 1...Nf6 (63% of games), 1...d5 (37% of games).
What openings does Jan-Willem De Jong play as White?
As White, Jan-Willem De Jong's most-played openings in our database are: Slav Defense (34 games, 29.4% win rate); Indian Defense (27 games, 33.3% win rate); Benoni Defense (23 games, 47.8% win rate). The full breakdown of 291 games with White is in the table above.
What openings does Jan-Willem De Jong play as Black?
As Black, Jan-Willem De Jong most often plays: Slav Defense (24 games, 29.2% win rate); Grünfeld Defense (22 games, 36.4% win rate); Ruy Lopez: Open (20 games, 5.0% win rate). See the table above for the top ten Black openings across 304 games.
What is Jan-Willem De Jong's FIDE rating?
Jan-Willem De Jong is currently rated 2,408 in classical chess and 2,368 in blitz. Peak classical rating: 2,479 (Oct 2008).
How many games has Jan-Willem De Jong played?
Our database contains 595 games by Jan-Willem De Jong, covering Apr 2003 to Jul 2026. Overall record: 209 wins, 237 draws, 149 losses (35.1% win rate).
How do I prepare against Jan-Willem De Jong?
595 games by Jan-Willem De Jong 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.