Prepare against Theo Dekker
NLD · World #25,692 classical · FIDE ID 1002260
When preparing against Theo Dekker, expect 1.e4 in 62% of White games. Against 1.e4 the reply is 1...e6 (60% of games); against 1.d4, 1...d5 (62%).
Our database contains 83 games by Theo Dekker, covering Apr 2003 to Aug 2026. Below you'll find Theo Dekker's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Theo 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 | 2,013 | 2,197 | Jan 2007 |
| Blitz | 1,915 | 2,129 | Mar 2013 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 83 | 18 | 22 | 43 | 21.7% |
| As White | 38 | 10 | 11 | 17 | 26.3% |
| As Black | 45 | 8 | 11 | 26 | 17.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Theo Dekker's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Theo Dekker's side.
First moves as White (37 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 23 | 62.2% | 45.7% |
| d4 | 12 | 32.4% | 41.7% |
| c3 | 1 | 2.7% | 0.0% |
| c4 | 1 | 2.7% | 0.0% |
Main lines as White
- 1.e4 — 62% of White games, 45.7% score
- …c5 (30% of these games) — Dekker usually continues c3 (0.0% score)
- …e5 (22% of these games) — Dekker usually continues Nf3 (70.0% score)
- …e6 (17% of these games) — Dekker usually continues d4 (75.0% score)
- 1.d4 — 32% of White games, 41.7% score
- …Nf6 (42% of these games) — Dekker usually continues c4 (83.3% score)
- …d5 (33% of these games) — Dekker usually continues c4 (25.0% score)
- …e6 (8% of these games) — Dekker usually continues c4 (50.0% score)
As Black against 1.e4 (20 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 12 | 60.0% | 45.8% |
| c5 | 4 | 20.0% | 0.0% |
| c6 | 2 | 10.0% | 0.0% |
| e5 | 1 | 5.0% | 0.0% |
| d5 | 1 | 5.0% | 0.0% |
As Black against 1.d4 (21 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 13 | 61.9% | 46.2% |
| Nf6 | 7 | 33.3% | 7.1% |
| e6 | 1 | 4.8% | 50.0% |
Theo Dekker's chess games
All 83 games by Theo Dekker in the Chess.ceo database (Apr 2003 - 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: 18 wins, 22 draws, 43 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B22 | Sicilian: Alapin | 7 | 0/0/7 | 0.0% |
| C56 | Italian Game | 5 | 2/3/0 | 40.0% |
| C02 | French: Advance Variation | 3 | 2/0/1 | 66.7% |
| B07 | Pirc Defense | 3 | 0/1/2 | 0.0% |
| B02 | Alekhine Defense | 2 | 1/1/0 | 50.0% |
| A26 | English Opening: Reverse Sicilian | 1 | 0/0/1 | 0.0% |
| A47 | English Defense | 1 | 0/0/1 | 0.0% |
| B12 | Caro-Kann: Advance Variation | 1 | 1/0/0 | 100.0% |
| A90 | Horwitz Defense | 1 | 0/1/0 | 0.0% |
| A83 | Dutch Defense | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D20 | Queen's Gambit Accepted | 8 | 3/2/3 | 37.5% |
| C06 | French: Tarrasch Variation | 6 | 1/1/4 | 16.7% |
| C18 | French: Winawer Variation | 3 | 2/1/0 | 66.7% |
| A90 | Slav Defense | 3 | 1/1/1 | 33.3% |
| E33 | Nimzo-Indian: Classical Variation | 2 | 0/1/1 | 0.0% |
| A13 | English Opening | 1 | 0/1/0 | 0.0% |
| B17 | Caro-Kann: Karpov Variation | 1 | 0/0/1 | 0.0% |
| E11 | Bogo-Indian Defense | 1 | 0/0/1 | 0.0% |
| C01 | French: Exchange Variation | 1 | 0/0/1 | 0.0% |
| B14 | Caro-Kann: Exchange Variation | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 1993 | Sandor Kustar | 2,335 | Balatonbereny Open | B02 |
| Jan 1988 | Niels Borne | 2,225 | Sas van Gent ECI Open U20 | D24 |
| Aug 2001 | Arianne Caoili | 2,152 | 5th Vlissingen HZ Open | D15 |
| Jan 2001 | Dusan Schwarz | 2,123 | Bratislava Slovan Open | B01 |
| Jan 1996 | Michael Wozny | 2,090 | 15th Zalakaros Open | B12 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Dieren Open | 1999 | 17 | 3.5 | 1,914 |
| Sas van Gent ECI Open U20 | 1988 | 9 | 5.5 | 2,313 |
| Balatonbereny Open | 1993 | 9 | 4.5 | 2,297 |
| Trinec Open | 1999 | 9 | 4 | 2,131 |
| 15th Zalakaros Open | 1996 | 8 | 4.5 | 2,224 |
| 5th Vlissingen HZ Open | 2001 | 5 | 1.5 | 2,064 |
| ch-NED Open | 1992 | 5 | 1 | 2,108 |
| 8th Haarlem AKN Open | 1999 | 4 | 2 | – |
Interactive opening tree from all 83 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Theo Dekker's chess games?
83 games by Theo Dekker, from Apr 2003 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 Theo Dekker has played.
What does Theo Dekker play on the first move as White?
Across 37 games with White in our database, Theo Dekker opens with 1.e4 (62% of games), 1.d4 (32% of games), 1.c3 (3% of games). Against 1.e4 as Black, Theo Dekker answers 1...e6 (60% of games), 1...c5 (20% of games), 1...c6 (10% of games). Against 1.d4: 1...d5 (62% of games), 1...Nf6 (33% of games), 1...e6 (5% of games).
What openings does Theo Dekker play as White?
As White, Theo Dekker's most-played openings in our database are: Sicilian: Alapin (7 games, 0.0% win rate); Italian Game (5 games, 40.0% win rate); French: Advance Variation (3 games, 66.7% win rate). The full breakdown of 38 games with White is in the table above.
What openings does Theo Dekker play as Black?
As Black, Theo Dekker most often plays: Queen's Gambit Accepted (8 games, 37.5% win rate); French: Tarrasch Variation (6 games, 16.7% win rate); French: Winawer Variation (3 games, 66.7% win rate). See the table above for the top ten Black openings across 45 games.
What is Theo Dekker's FIDE rating?
Theo Dekker is currently rated 2,013 in classical chess and 1,915 in blitz. Peak classical rating: 2,197 (Jan 2007).
How many games has Theo Dekker played?
Our database contains 83 games by Theo Dekker, covering Apr 2003 to Aug 2026. Overall record: 18 wins, 22 draws, 43 losses (21.7% win rate).
How do I prepare against Theo Dekker?
83 games by Theo 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.