Prepare against Herman Grooten
IM · NLD · World #9,772 classical · FIDE ID 1000330
When preparing against Herman Grooten, expect 1.d4 in 89% of White games. Against 1.e4 the reply is 1...c5 (49% of games); against 1.d4, 1...Nf6 (99%). Lowest win rate among frequent openings: Nimzo-Indian: Rubinstein System as Black, 26.9% over 26 games.
Our database contains 1,191 games by Herman Grooten, covering Apr 2003 to Sep 2026. Below you'll find Herman Grooten's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Herman Grooten 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 | 2,174 | 2,408 | Apr 2003 |
| Rapid | 2,184 | 2,243 | Jun 2024 |
| Blitz | 2,120 | 2,286 | Aug 2022 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 1,191 | 534 | 188 | 469 | 44.8% |
| As White | 599 | 272 | 105 | 222 | 45.4% |
| As Black | 592 | 262 | 83 | 247 | 44.3% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Herman Grooten's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Herman Grooten's side.
First moves as White (599 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 531 | 88.6% | 54.2% |
| Nf3 | 35 | 5.8% | 48.6% |
| c4 | 30 | 5.0% | 55.0% |
| e4 | 3 | 0.5% | 100.0% |
Main lines as White
- 1.d4 — 89% of White games, 54.2% score
- …Nf6 (60% of these games) — Grooten usually continues c4 (51.5% score)
- …d5 (25% of these games) — Grooten usually continues c4 (57.4% score)
- …e6 (6% of these games) — Grooten usually continues c4 (59.1% score)
- 1.Nf3 — 6% of White games, 48.6% score
- …Nf6 (49% of these games) — Grooten usually continues c4 (50.0% score)
- …d5 (29% of these games) — Grooten usually continues c4 (33.3% score)
- …c5 (9% of these games) — Grooten usually continues c4 (50.0% score)
As Black against 1.e4 (276 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 135 | 48.9% | 53.0% |
| c6 | 123 | 44.6% | 56.5% |
| e6 | 12 | 4.3% | 58.3% |
| e5 | 2 | 0.7% | 25.0% |
| g6 | 2 | 0.7% | 100.0% |
| Nf6 | 2 | 0.7% | 50.0% |
As Black against 1.d4 (208 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 205 | 98.6% | 42.0% |
| c5 | 2 | 1.0% | 25.0% |
| d5 | 1 | 0.5% | 50.0% |
Herman Grooten's chess games
All 1,191 games by Herman Grooten in the Chess.ceo database (Apr 2003 - Sep 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: 534 wins, 188 draws, 469 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E92 | King's Indian Defense: Orthodox Variation | 75 | 30/14/31 | 40.0% |
| E12 | Queen's Indian Defense | 71 | 25/13/33 | 35.2% |
| D46 | Slav Defense | 68 | 31/11/26 | 45.6% |
| D36 | Indian Defense | 61 | 24/11/26 | 39.3% |
| A57 | Benoni Defense | 54 | 30/10/14 | 55.6% |
| E11 | Bogo-Indian Defense | 36 | 17/5/14 | 47.2% |
| D91 | Grünfeld Defense | 27 | 15/4/8 | 55.6% |
| A81 | Dutch Defense | 23 | 11/2/10 | 47.8% |
| D34 | Queen's Gambit Declined | 21 | 12/5/4 | 57.1% |
| A17 | English Opening | 15 | 11/2/2 | 73.3% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E15 | Queen's Indian Defense | 82 | 28/13/41 | 34.1% |
| B40 | Sicilian | 46 | 20/5/21 | 43.5% |
| B19 | Caro-Kann: Classical | 45 | 19/12/14 | 42.2% |
| A30 | English Opening: Symmetrical | 38 | 23/4/11 | 60.5% |
| B81 | Sicilian: Scheveningen | 32 | 14/4/14 | 43.8% |
| B12 | Caro-Kann: Advance Variation | 30 | 11/9/10 | 36.7% |
| E32 | Nimzo-Indian: Classical Variation | 30 | 9/7/14 | 30.0% |
| A30 | English Opening | 28 | 15/1/12 | 53.6% |
| A46 | Indian Defense | 28 | 11/4/13 | 39.3% |
| E42 | Nimzo-Indian: Rubinstein System | 26 | 7/2/17 | 26.9% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2007 | Daniel Stellwagen | 2,631 | 11th Vlissingen HZ Open | B19 |
| Jan 1993 | Larry Christiansen | 2,620 | Hoogovens Open | E11 |
| Jul 2006 | Vyacheslav Ikonnikov | 2,587 | Dieren Open | E12 |
| Apr 2008 | Boris Chatalbashev | 2,585 | Hilversum Open | E43 |
| Oct 2007 | Tiger Hillarp Persson | 2,567 | Hoogeveen Essent Open | B80 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Hoogeveen Essent Open | 2008 | 63 | 36 | 2,381 |
| Dieren Open | 2019 | 43 | 22 | 2,317 |
| Leeuwarden Open | 1997 | 26 | 14 | 2,456 |
| Dutch Open | 2025 | 18 | 10 | 2,164 |
| The Hague AEGON | 1995 | 18 | 12.5 | – |
| Helmond Rapid Open | 2024 | 18 | 12.5 | 2,162 |
| Gibraltar Masters | 2007 | 18 | 11 | 2,407 |
| Caorle Open | 1988 | 17 | 11 | 2,288 |
Interactive opening tree from all 1,191 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Herman Grooten's chess games?
1,191 games by Herman Grooten, from Apr 2003 to Sep 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 Herman Grooten has played.
What does Herman Grooten play on the first move as White?
Across 599 games with White in our database, Herman Grooten opens with 1.d4 (89% of games), 1.Nf3 (6% of games), 1.c4 (5% of games). Against 1.e4 as Black, Herman Grooten answers 1...c5 (49% of games), 1...c6 (45% of games), 1...e6 (4% of games). Against 1.d4: 1...Nf6 (99% of games), 1...c5 (1% of games), 1...d5 (0% of games).
What openings does Herman Grooten play as White?
As White, Herman Grooten's most-played openings in our database are: King's Indian Defense: Orthodox Variation (75 games, 40.0% win rate); Queen's Indian Defense (71 games, 35.2% win rate); Slav Defense (68 games, 45.6% win rate). The full breakdown of 599 games with White is in the table above.
What openings does Herman Grooten play as Black?
As Black, Herman Grooten most often plays: Queen's Indian Defense (82 games, 34.1% win rate); Sicilian (46 games, 43.5% win rate); Caro-Kann: Classical (45 games, 42.2% win rate). See the table above for the top ten Black openings across 592 games.
What is Herman Grooten's FIDE rating?
Herman Grooten is currently rated 2,174 in classical chess, 2,184 in rapid and 2,120 in blitz. Peak classical rating: 2,408 (Apr 2003).
How many games has Herman Grooten played?
Our database contains 1,191 games by Herman Grooten, covering Apr 2003 to Sep 2026. Overall record: 534 wins, 188 draws, 469 losses (44.8% win rate).
How do I prepare against Herman Grooten?
1,191 games by Herman Grooten 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.