Prepare against Harm Theo Wagenaar
NLD · World #59,348 classical · FIDE ID 1008293
Our database contains 238 games by Harm Theo Wagenaar, covering Oct 2003 to Jul 2026. Below you'll find Harm Theo Wagenaar's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Harm Theo Wagenaar 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 | 1,858 | 2,150 | Apr 2004 |
| Rapid | 1,916 | 1,916 | Jul 2026 |
| Blitz | 1,912 | 1,912 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 238 | 61 | 88 | 89 | 25.6% |
| As White | 120 | 28 | 48 | 44 | 23.3% |
| As Black | 118 | 33 | 40 | 45 | 28.0% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Harm Theo Wagenaar's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Harm Theo Wagenaar's side.
First moves as White (120 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 92 | 76.7% | 44.0% |
| c4 | 28 | 23.3% | 41.1% |
Main lines as White
- 1.d4 — 77% of White games, 44.0% score
- …Nf6 (58% of these games) — Wagenaar usually continues Nf3 (39.8% score)
- …d5 (26% of these games) — Wagenaar usually continues Nf3 (45.8% score)
- …e6 (5% of these games) — Wagenaar usually continues Nf3 (50.0% score)
- 1.c4 — 23% of White games, 41.1% score
- …Nf6 (46% of these games) — Wagenaar usually continues g3 (38.9% score)
- …g6 (14% of these games) — Wagenaar usually continues g3 (75.0% score)
- …e5 (11% of these games) — Wagenaar usually continues g3 (33.3% score)
As Black against 1.e4 (61 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 27 | 44.3% | 48.1% |
| c5 | 27 | 44.3% | 40.7% |
| e6 | 5 | 8.2% | 40.0% |
| c6 | 2 | 3.3% | 75.0% |
As Black against 1.d4 (32 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 32 | 100.0% | 54.7% |
Harm Theo Wagenaar's chess games
All 238 games by Harm Theo Wagenaar in the Chess.ceo database (Oct 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: 61 wins, 88 draws, 89 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D05 | Indian Defense | 38 | 8/15/15 | 21.1% |
| A24 | English Opening | 15 | 2/6/7 | 13.3% |
| D04 | Colle System | 12 | 6/3/3 | 50.0% |
| D03 | King's Indian Defense | 9 | 2/3/4 | 22.2% |
| D02 | Queen's Pawn Game | 9 | 3/3/3 | 33.3% |
| A36 | Modern Defense | 5 | 2/3/0 | 40.0% |
| A20 | English Opening: Reverse Sicilian | 4 | 0/2/2 | 0.0% |
| D12 | Slav Defense | 4 | 0/2/2 | 0.0% |
| A48 | Torre Attack | 4 | 0/1/3 | 0.0% |
| A45 | Trompowsky Attack | 4 | 2/0/2 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B01 | Scandinavian Defense: Main Line | 26 | 6/13/7 | 23.1% |
| B28 | Sicilian | 22 | 5/9/8 | 22.7% |
| D52 | Slav Defense | 18 | 8/5/5 | 44.4% |
| A07 | Réti Opening | 7 | 1/2/4 | 14.3% |
| D11 | Queen's Pawn Game | 5 | 2/1/2 | 40.0% |
| A14 | English Opening: Symmetrical | 5 | 2/2/1 | 40.0% |
| B23 | Sicilian: Closed | 5 | 1/1/3 | 20.0% |
| A30 | English Opening | 4 | 1/0/3 | 25.0% |
| C10 | French Defense | 3 | 0/0/3 | 0.0% |
| D02 | London System | 3 | 0/1/2 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 1996 | R. Nielsen | 2,255 | ch-NATO | A46 |
| Sep 2007 | Zygmunt Pioch | 2,209 | 18th ch-NATO | E14 |
| Sep 2003 | Roberto Donati | 2,201 | 14th ch-NATO | B24 |
| Jan 2001 | Willem Broekman | 2,169 | Groene Hart Gr A | E14 |
| Oct 2001 | Rouslan Toumaniantz | 2,164 | 12th ch-NATO | B01 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Olympiad-28 | 1988 | 10 | 2.5 | 2,057 |
| Curacao Open 11th | 2011 | 8 | 4.5 | 2,218 |
| ch-NATO | 1996 | 7 | 4 | 2,287 |
| 25th ch-NATO | 2014 | 7 | 3.5 | 2,161 |
| 16th ch-NATO | 2005 | 7 | 4 | 2,192 |
| 29th ch-NATO | 2018 | 7 | 3.5 | 2,023 |
| 24th ch-NATO | 2013 | 7 | 4 | 2,088 |
| 10th ch-NATO | 1999 | 7 | 4.5 | 1,927 |
Interactive opening tree from all 238 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Harm Theo Wagenaar's chess games?
238 games by Harm Theo Wagenaar, from Oct 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 Harm Theo Wagenaar has played.
What does Harm Theo Wagenaar play on the first move as White?
Across 120 games with White in our database, Harm Theo Wagenaar opens with 1.d4 (77% of games), 1.c4 (23% of games). Against 1.e4 as Black, Harm Theo Wagenaar answers 1...d5 (44% of games), 1...c5 (44% of games), 1...e6 (8% of games). Against 1.d4: 1...d5 (100% of games).
What openings does Harm Theo Wagenaar play as White?
As White, Harm Theo Wagenaar's most-played openings in our database are: Indian Defense (38 games, 21.1% win rate); English Opening (15 games, 13.3% win rate); Colle System (12 games, 50.0% win rate). The full breakdown of 120 games with White is in the table above.
What openings does Harm Theo Wagenaar play as Black?
As Black, Harm Theo Wagenaar most often plays: Scandinavian Defense: Main Line (26 games, 23.1% win rate); Sicilian (22 games, 22.7% win rate); Slav Defense (18 games, 44.4% win rate). See the table above for the top ten Black openings across 118 games.
What is Harm Theo Wagenaar's FIDE rating?
Harm Theo Wagenaar is currently rated 1,858 in classical chess, 1,916 in rapid and 1,912 in blitz. Peak classical rating: 2,150 (Apr 2004).
How many games has Harm Theo Wagenaar played?
Our database contains 238 games by Harm Theo Wagenaar, covering Oct 2003 to Jul 2026. Overall record: 61 wins, 88 draws, 89 losses (25.6% win rate).
How do I prepare against Harm Theo Wagenaar?
238 games by Harm Theo Wagenaar 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.