Prepare against Piet De Haas
NLD · World #14,345 classical · FIDE ID 1006606
Our database contains 84 games by Piet De Haas, covering Apr 2003 to Jul 2026. Below you'll find Piet De Haas's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Piet De Haas 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 | 2,112 | 2,171 | Jul 2004 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 84 | 37 | 17 | 29 | 44.0% |
| As White | 40 | 21 | 11 | 7 | 52.5% |
| As Black | 44 | 16 | 6 | 22 | 36.4% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Piet De Haas's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Piet De Haas's side.
First moves as White (40 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 40 | 100.0% | 67.5% |
Main lines as White
- 1.e4 — 100% of White games, 67.5% score
- …e5 (40% of these games) — Haas usually continues Nf3 (71.9% score)
- …c5 (33% of these games) — Haas usually continues Nf3 (75.0% score)
- …e6 (10% of these games) — Haas usually continues d4 (75.0% score)
As Black against 1.e4 (17 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 11 | 64.7% | 13.6% |
| g6 | 2 | 11.8% | 100.0% |
| c6 | 1 | 5.9% | 0.0% |
| e6 | 1 | 5.9% | 0.0% |
| d6 | 1 | 5.9% | 0.0% |
| c5 | 1 | 5.9% | 0.0% |
As Black against 1.d4 (18 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 14 | 77.8% | 53.6% |
| g6 | 3 | 16.7% | 50.0% |
| d5 | 1 | 5.6% | 0.0% |
Piet De Haas's chess games
All 84 games by Piet De Haas in the Chess.ceo database (Apr 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: 37 wins, 17 draws, 29 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C88 | Ruy Lopez: Closed | 5 | 3/1/1 | 60.0% |
| B85 | Sicilian: Najdorf | 4 | 1/3/0 | 25.0% |
| B33 | Sicilian: Sveshnikov | 3 | 3/0/0 | 100.0% |
| C71 | Ruy Lopez: Steinitz Defense Deferred | 3 | 1/2/0 | 33.3% |
| C18 | French: Winawer Variation | 2 | 1/1/0 | 50.0% |
| B32 | Sicilian | 2 | 1/0/1 | 50.0% |
| C03 | French: Tarrasch Variation | 2 | 1/0/0 | 50.0% |
| B08 | Modern Defense | 1 | 0/0/1 | 0.0% |
| C56 | Italian Game | 1 | 1/0/0 | 100.0% |
| B17 | Caro-Kann: Karpov Variation | 1 | 1/0/0 | 100.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A40 | Modern Defense | 7 | 4/1/2 | 57.1% |
| E97 | King's Indian Defense: Orthodox Variation | 5 | 3/0/2 | 60.0% |
| C29 | Vienna Game | 3 | 0/2/1 | 0.0% |
| A25 | English Opening: Reverse Sicilian | 2 | 0/2/0 | 0.0% |
| C31 | King's Gambit | 2 | 0/0/2 | 0.0% |
| E81 | King's Indian: Sämisch | 2 | 0/0/2 | 0.0% |
| C45 | Scotch Game | 2 | 0/0/2 | 0.0% |
| C54 | Italian Game: Classical Variation | 2 | 0/0/2 | 0.0% |
| C18 | French: Winawer Variation | 1 | 0/0/1 | 0.0% |
| A52 | Budapest Defense | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 1998 | James E Vigus | 2,260 | 7th Haarlem AKN Open | E97 |
| Jan 2001 | Joop Piket | 2,228 | Corus Reserve Open | A45 |
| Jan 2001 | Henk Happel | 2,224 | Corus Reserve Open | E92 |
| Jan 2001 | Ad Van den Berg | 2,210 | Corus Reserve Open | B38 |
| Jan 2001 | Erik Oosterom | 2,199 | Corus Reserve Open | E97 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Alkmaar Open B | 1984 | 20 | 10.5 | – |
| Haarlem ACCOM Open | 1987 | 13 | 7 | 2,270 |
| Corus Reserve Open | 2001 | 9 | 4.5 | 2,246 |
| 3rd Haarlem AKN Open | 1994 | 6 | 3 | 2,330 |
| Alkmaar ACCOM Open B | 1985 | 6 | 3 | – |
| 7th Haarlem AKN Open | 1998 | 5 | 3.5 | 2,480 |
| 3rd Haarlem Nova College Open | 2004 | 5 | 3.5 | 2,241 |
| 6th Haarlem AKN Open | 1997 | 5 | 3 | 2,137 |
Interactive opening tree from all 84 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Piet De Haas's chess games?
84 games by Piet De Haas, from Apr 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 Piet De Haas has played.
What does Piet De Haas play on the first move as White?
Across 40 games with White in our database, Piet De Haas opens with 1.e4 (100% of games). Against 1.e4 as Black, Piet De Haas answers 1...e5 (65% of games), 1...g6 (12% of games), 1...c6 (6% of games). Against 1.d4: 1...Nf6 (78% of games), 1...g6 (17% of games), 1...d5 (6% of games).
What openings does Piet De Haas play as White?
As White, Piet De Haas's most-played openings in our database are: Ruy Lopez: Closed (5 games, 60.0% win rate); Sicilian: Najdorf (4 games, 25.0% win rate); Sicilian: Sveshnikov (3 games, 100.0% win rate). The full breakdown of 40 games with White is in the table above.
What openings does Piet De Haas play as Black?
As Black, Piet De Haas most often plays: Modern Defense (7 games, 57.1% win rate); King's Indian Defense: Orthodox Variation (5 games, 60.0% win rate); Vienna Game (3 games, 0.0% win rate). See the table above for the top ten Black openings across 44 games.
What is Piet De Haas's FIDE rating?
Piet De Haas is currently rated 2,112 in classical chess. Peak classical rating: 2,171 (Jul 2004).
How many games has Piet De Haas played?
Our database contains 84 games by Piet De Haas, covering Apr 2003 to Jul 2026. Overall record: 37 wins, 17 draws, 29 losses (44.0% win rate).
How do I prepare against Piet De Haas?
84 games by Piet De Haas 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.