IMNiels Ondersteijn
NED · FIDE ID 1011162 · 84 tournament games since 2021
Standard
2367
#60 in NED (active)
Rapid
2392
#30 in NED (active)
Blitz
2440
#24 in NED (active)
Score
55%
39 W · 15 D · 30 L
Opp. avg
2292
Last 50 games
Last game
2026-09-19
Dutch Meesterklasse 2026-2027
Prep summary
- As White: 1.c4 in 81% of games (scores 72%).
- Against 1.e4: 1...d6 in 17 of 19 games (Pirc Defense), scoring 32%.
- Against 1.d4: 1...Nf6 in 10 of 13 games (Indian Defense), scoring 60%.
- Weak spot: Pirc Defense: Byrne Variation as Black, only 33% in 3 games.
- Comfort zone: English Opening: Anglo-Indian Defense as White, 100% in 6 games.
- By opponent strength: 28% against higher-rated players, 77% against lower-rated.
Based on 84 over-the-board games (20 classical · 9 rapid). 42 with White (69%), 42 with Black (42%).
Openings as White
First move
| 1.c4 | 34 | 72% |
| 1.Nf3 | 3 | 33% |
| 1.g3 | 2 | 75% |
| 1.d4 | 2 | 50% |
Most played
| Opening | Games | Score |
|---|---|---|
| English Opening: Agincourt Defense | 7 | 36% |
| English Opening: Anglo-Indian Defense | 6 | 100% |
| English Opening: King's English Variation | 5 | 80% |
| English Opening: Agincourt Defense, Neo-Catalan Declined | 4 | 50% |
| English Opening: Symmetrical Variation, Rubinstein Variation | 2 | 100% |
Openings as Black
Against 1.e4 (19 games)
| 1...d6 Pirc Defense | 17 | 32% |
| 1...e5 King's Pawn Game | 1 | 0% |
| 1...c5 Sicilian Defense | 1 | 0% |
Against 1.d4 (13 games)
| 1...Nf6 Indian Defense | 10 | 60% |
| 1...d6 Queen's Pawn Game | 3 | 33% |
Most played
| Opening | Games | Score |
|---|---|---|
| Pirc Defense | 10 | 35% |
| Pirc Defense: Byrne Variation | 3 | 33% |
| Bogo-Indian Defense: Nimzowitsch Variation | 2 | 50% |
| Bogo-Indian Defense: Grünfeld Variation | 2 | 100% |
| King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System | 2 | 25% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2026-09-19 | Philipp Leon Klaska (2364) Dutch Meesterklasse 2026-2027 | ½ |
| 2026-05-17 | Freek Thijssen (2133) Utrecht Open 2026 | Group A · classical | L |
| 2026-05-16 | Herman Grooten (2175) Utrecht Open 2026 | Group A · classical | ½ |
| 2026-05-15 | Matthieu Guillaumond (2094) Utrecht Open 2026 | Group A · classical | L |
| 2026-05-14 | Jeroen Bosch (2415) Dutch Cup Finals · classical | L |
| 2026-05-14 | Jeroen Bosch (2415) Dutch Cup Finals · classical | L |
| 2026-05-14 | Matthieu Freeke (2286) Dutch Cup Finals · classical | W |
| 2026-05-02 | Tom Van t Hoff (2021) Open Dutch Rapid Championship 2026 · rapid | W |
| 2026-05-02 | Pranav Kshirsagar (2060) Open Dutch Rapid Championship 2026 · rapid | W |
| 2026-05-02 | Joey Grochal (2226) Open Dutch Rapid Championship 2026 · rapid | L |
Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.