Prepare against Alex Jonkheer
NLD · World #111,782 classical · FIDE ID 1025465
When preparing against Alex Jonkheer, expect 1.d4 in 97% of White games. Against 1.e4 the reply is 1...e6 (100% of games); against 1.d4, 1...d5 (91%).
Our database contains 71 games by Alex Jonkheer, covering Apr 2009 to Jul 2026. Below you'll find Alex Jonkheer's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Alex Jonkheer 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 | 1,696 | 1,941 | Jul 2009 |
| Rapid | 1,682 | 1,695 | Mar 2025 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 71 | 17 | 8 | 46 | 23.9% |
| As White | 33 | 6 | 4 | 23 | 18.2% |
| As Black | 38 | 11 | 4 | 23 | 28.9% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Alex Jonkheer's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Alex Jonkheer's side.
First moves as White (33 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 32 | 97.0% | 25.0% |
| e4 | 1 | 3.0% | 0.0% |
Main lines as White
- 1.d4 — 97% of White games, 25.0% score
- …Nf6 (44% of these games) — Jonkheer usually continues c4 (27.8% score)
- …d5 (31% of these games) — Jonkheer usually continues c4 (31.3% score)
- …e6 (6% of these games) — Jonkheer usually continues Nf3 (0.0% score)
- 1.e4 — 3% of White games, 0.0% score
- …e5 (100% of these games) — Jonkheer usually continues Nf3 (0.0% score)
As Black against 1.e4 (18 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 18 | 100.0% | 30.6% |
As Black against 1.d4 (11 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 10 | 90.9% | 30.0% |
| Nf6 | 1 | 9.1% | 100.0% |
Alex Jonkheer's chess games
All 71 games by Alex Jonkheer in the Chess.ceo database (Apr 2009 - 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: 17 wins, 8 draws, 46 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D53 | Queen's Gambit Declined | 4 | 2/0/2 | 50.0% |
| D10 | Slav Defense | 4 | 0/0/4 | 0.0% |
| E90 | King's Indian Defense: Orthodox Variation | 3 | 0/1/2 | 0.0% |
| D37 | London System | 2 | 2/0/0 | 100.0% |
| A48 | Torre Attack | 2 | 1/0/1 | 50.0% |
| D93 | Grünfeld Defense | 2 | 0/1/1 | 0.0% |
| D94 | Benoni Defense | 2 | 1/0/1 | 50.0% |
| A48 | Indian Defense | 2 | 0/1/1 | 0.0% |
| E21 | Queen's Indian Defense | 2 | 0/0/2 | 0.0% |
| A41 | Rat Defense | 2 | 0/0/2 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D35 | Indian Defense | 6 | 3/0/3 | 50.0% |
| C11 | French: Classical Variation | 5 | 0/0/5 | 0.0% |
| C02 | French: Advance Variation | 4 | 1/0/3 | 25.0% |
| C01 | French Defense | 3 | 1/2/0 | 33.3% |
| C06 | French: Tarrasch Variation | 3 | 0/1/2 | 0.0% |
| D37 | Slav Defense | 2 | 0/0/2 | 0.0% |
| A34 | English Opening: Symmetrical | 2 | 0/0/2 | 0.0% |
| C01 | French: Exchange Variation | 2 | 1/0/1 | 50.0% |
| D02 | Queen's Pawn Game | 2 | 0/0/2 | 0.0% |
| A05 | Réti Opening | 2 | 0/1/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 1999 | Jaap De Jager | 2,277 | 3rd Vlissingen HZ Open | A00 |
| Jan 1997 | Anthony Ibrahim | 2,175 | 1st Vlissingen HZ Open | D60 |
| Sep 2009 | Rudy Defour | 1,873 | Gravenpolder Seniors Open | E12 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Gravenpolder Seniors Open | 2009 | 9 | 5.5 | 2,054 |
| PKS Open A | 2003 | 8 | 2 | 1,983 |
| 4th Vlissingen HZ Open | 2000 | 8 | 2.5 | 2,015 |
| Vlissingen Open | 1996 | 7 | 4 | 2,302 |
| 2nd Vlissingen HZ Open | 1998 | 7 | 2.5 | 2,130 |
| 3rd Vlissingen HZ Open | 1999 | 7 | 2.5 | 2,126 |
| 1st Vlissingen HZ Open | 1997 | 7 | 2 | 2,016 |
| 5th Vlissingen HZ Open | 2001 | 2 | 0 | 1,785 |
Interactive opening tree from all 71 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Alex Jonkheer's chess games?
71 games by Alex Jonkheer, from Apr 2009 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 Alex Jonkheer has played.
What does Alex Jonkheer play on the first move as White?
Across 33 games with White in our database, Alex Jonkheer opens with 1.d4 (97% of games), 1.e4 (3% of games). Against 1.e4 as Black, Alex Jonkheer answers 1...e6 (100% of games). Against 1.d4: 1...d5 (91% of games), 1...Nf6 (9% of games).
What openings does Alex Jonkheer play as White?
As White, Alex Jonkheer's most-played openings in our database are: Queen's Gambit Declined (4 games, 50.0% win rate); Slav Defense (4 games, 0.0% win rate); King's Indian Defense: Orthodox Variation (3 games, 0.0% win rate). The full breakdown of 33 games with White is in the table above.
What openings does Alex Jonkheer play as Black?
As Black, Alex Jonkheer most often plays: Indian Defense (6 games, 50.0% win rate); French: Classical Variation (5 games, 0.0% win rate); French: Advance Variation (4 games, 25.0% win rate). See the table above for the top ten Black openings across 38 games.
What is Alex Jonkheer's FIDE rating?
Alex Jonkheer is currently rated 1,696 in classical chess, 1,682 in rapid. Peak classical rating: 1,941 (Jul 2009).
How many games has Alex Jonkheer played?
Our database contains 71 games by Alex Jonkheer, covering Apr 2009 to Jul 2026. Overall record: 17 wins, 8 draws, 46 losses (23.9% win rate).
How do I prepare against Alex Jonkheer?
71 games by Alex Jonkheer 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.