Prepare against Jasper Dekker
NLD · World #30,706 classical · FIDE ID 1059572
When preparing against Jasper Dekker, expect 1.e4 in 87% of White games. Against 1.e4 the reply is 1...c5 (78% of games); against 1.d4, 1...d5 (57%).
Our database contains 34 games by Jasper Dekker, covering Jul 2017 to Aug 2026. Below you'll find Jasper Dekker's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jasper Dekker 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 | 1,981 | 1,981 | Aug 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 34 | 8 | 13 | 13 | 23.5% |
| As White | 15 | 5 | 5 | 5 | 33.3% |
| As Black | 19 | 3 | 8 | 8 | 15.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jasper Dekker's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jasper Dekker's side.
First moves as White (15 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 13 | 86.7% | 46.2% |
| c4 | 1 | 6.7% | 50.0% |
| d4 | 1 | 6.7% | 100.0% |
Main lines as White
- 1.e4 — 87% of White games, 46.2% score
- …c5 (46% of these games) — Dekker usually continues Nf3 (75.0% score)
- …e6 (23% of these games) — Dekker usually continues d4 (83.3% score)
- …d6 (15% of these games) — Dekker usually continues d4 (25.0% score)
- 1.c4 — 7% of White games, 50.0% score
- …e5 (100% of these games) — Dekker usually continues a3 (50.0% score)
As Black against 1.e4 (9 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 7 | 77.8% | 28.6% |
| c6 | 2 | 22.2% | 50.0% |
As Black against 1.d4 (7 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 4 | 57.1% | 12.5% |
| Nf6 | 3 | 42.9% | 83.3% |
Jasper Dekker's chess games
All 34 games by Jasper Dekker in the Chess.ceo database (Jul 2017 - Aug 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: 8 wins, 13 draws, 13 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C02 | French: Advance Variation | 2 | 2/0/0 | 100.0% |
| B22 | Sicilian | 2 | 1/1/0 | 50.0% |
| B22 | Sicilian: Alapin | 2 | 0/0/2 | 0.0% |
| B21 | Sicilian: Smith-Morra Gambit | 2 | 1/0/1 | 50.0% |
| A20 | English Opening: Reverse Sicilian | 1 | 0/1/0 | 0.0% |
| D02 | Queen's Pawn Game | 1 | 1/0/0 | 100.0% |
| C44 | Scotch Game | 1 | 0/1/0 | 0.0% |
| B09 | Pirc Defense | 1 | 0/1/0 | 0.0% |
| C05 | French: Tarrasch Variation | 1 | 0/1/0 | 0.0% |
| C44 | Italian Game | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B23 | Sicilian: Closed | 3 | 0/3/0 | 0.0% |
| D30 | Queen's Gambit Declined | 3 | 0/1/2 | 0.0% |
| B75 | Sicilian: Dragon | 2 | 0/1/1 | 0.0% |
| B10 | Caro-Kann | 1 | 0/0/1 | 0.0% |
| B13 | Caro-Kann: Exchange Variation | 1 | 1/0/0 | 100.0% |
| A16 | English Opening | 1 | 0/1/0 | 0.0% |
| A48 | Indian Defense | 1 | 1/0/0 | 100.0% |
| D00 | Queen's Pawn Game | 1 | 1/0/0 | 100.0% |
| A08 | Réti Opening | 1 | 0/0/1 | 0.0% |
| B22 | Sicilian: Alapin | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jul 2026 | Wouter Lardinois | 2,008 | Dutch Open 2026 - Reserve A | B22 |
| Oct 2023 | Aldo Van de Woestijne | 2,005 | Amsterdam Chess Open 2023 - A & B | B13 |
| Oct 2023 | Steve Michel | 1,889 | Amsterdam Chess Open 2023 - A & B | D02 |
| Jul 2026 | David Knight | 1,868 | Dutch Open 2026 - Reserve A | D00 |
| Jun 2021 | Francesco Raimondi | 1,581 | Davos Open 20th | C02 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Dutch Open 2026 - Reserve A | 2026 | 7 | 4 | 2,067 |
| Davos Open 20th | 2021 | 5 | 3.5 | 1,815 |
| Amsterdam Chess Open 2023 - A & B | 2023 | 5 | 3 | 2,018 |
| 55th Groningen Open B | 2017 | 5 | 3 | 1,869 |
| 33rd Feffernitz Open A | 2024 | 2 | 0 | 1,895 |
| Hoorn Romero Open | 2024 | 2 | 0.5 | 1,807 |
| Oscar Romero Open Hoorns Kampioenschap 2024 | 2024 | 1 | 0.5 | 2,054 |
| 2nd Amsterdam Chess Open | 2024 | 1 | 0 | 1,634 |
Interactive opening tree from all 34 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jasper Dekker's chess games?
34 games by Jasper Dekker, from Jul 2017 to Aug 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 Jasper Dekker has played.
What does Jasper Dekker play on the first move as White?
Across 15 games with White in our database, Jasper Dekker opens with 1.e4 (87% of games), 1.c4 (7% of games), 1.d4 (7% of games). Against 1.e4 as Black, Jasper Dekker answers 1...c5 (78% of games), 1...c6 (22% of games). Against 1.d4: 1...d5 (57% of games), 1...Nf6 (43% of games).
What openings does Jasper Dekker play as White?
As White, Jasper Dekker's most-played openings in our database are: French: Advance Variation (2 games, 100.0% win rate); Sicilian (2 games, 50.0% win rate); Sicilian: Alapin (2 games, 0.0% win rate). The full breakdown of 15 games with White is in the table above.
What openings does Jasper Dekker play as Black?
As Black, Jasper Dekker most often plays: Sicilian: Closed (3 games, 0.0% win rate); Queen's Gambit Declined (3 games, 0.0% win rate); Sicilian: Dragon (2 games, 0.0% win rate). See the table above for the top ten Black openings across 19 games.
What is Jasper Dekker's FIDE rating?
Jasper Dekker is currently rated 1,981 in classical chess. Peak classical rating: 1,981 (Aug 2026).
How many games has Jasper Dekker played?
Our database contains 34 games by Jasper Dekker, covering Jul 2017 to Aug 2026. Overall record: 8 wins, 13 draws, 13 losses (23.5% win rate).
How do I prepare against Jasper Dekker?
34 games by Jasper Dekker 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.