Prepare against Thomas Nielsen
DNK · World #31,806 classical · FIDE ID 1407147
Our database contains 147 games by Thomas Nielsen, covering Apr 2003 to Jul 2026. Below you'll find Thomas Nielsen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Thomas Nielsen 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 | 1,975 | 2,066 | Apr 2003 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 147 | 46 | 35 | 66 | 31.3% |
| As White | 68 | 16 | 20 | 32 | 23.5% |
| As Black | 79 | 30 | 15 | 34 | 38.0% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Thomas Nielsen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Thomas Nielsen's side.
First moves as White (68 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 56 | 82.4% | 36.6% |
| c4 | 10 | 14.7% | 55.0% |
| e4 | 2 | 2.9% | 0.0% |
Main lines as White
- 1.d4 — 82% of White games, 36.6% score
- …Nf6 (61% of these games) — Nielsen usually continues c4 (42.6% score)
- …d5 (30% of these games) — Nielsen usually continues c4 (25.0% score)
- …f5 (4% of these games) — Nielsen usually continues c4 (50.0% score)
- 1.c4 — 15% of White games, 55.0% score
- …e5 (20% of these games) — Nielsen usually continues Nc3 (100.0% score)
- …b6 (20% of these games) — Nielsen usually continues Nc3 (50.0% score)
- …Nc6 (20% of these games) — Nielsen usually continues Nc3 (50.0% score)
As Black against 1.e4 (37 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c6 | 31 | 83.8% | 32.3% |
| c5 | 6 | 16.2% | 58.3% |
As Black against 1.d4 (28 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 20 | 71.4% | 45.0% |
| Nf6 | 8 | 28.6% | 56.3% |
Thomas Nielsen's chess games
All 147 games by Thomas Nielsen 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: 46 wins, 35 draws, 66 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D10 | Slav Defense | 6 | 2/0/4 | 33.3% |
| E73 | King's Indian Defense: Averbakh System | 6 | 1/1/4 | 16.7% |
| D37 | Indian Defense | 6 | 1/3/2 | 16.7% |
| A10 | English Opening | 5 | 2/2/1 | 40.0% |
| E32 | Nimzo-Indian: Classical Variation | 5 | 0/1/4 | 0.0% |
| A56 | Benoni Defense | 4 | 3/1/0 | 75.0% |
| E16 | Queen's Indian Defense | 4 | 0/3/1 | 0.0% |
| E11 | Bogo-Indian Defense | 4 | 2/0/2 | 50.0% |
| D87 | Grünfeld Defense | 3 | 1/1/1 | 33.3% |
| E81 | King's Indian: Sämisch | 3 | 1/1/1 | 33.3% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D32 | Queen's Gambit Declined | 12 | 6/2/4 | 50.0% |
| B18 | Caro-Kann: Classical | 8 | 1/3/4 | 12.5% |
| B12 | Caro-Kann: Advance Variation | 6 | 1/1/4 | 16.7% |
| A13 | English Opening | 5 | 4/1/0 | 80.0% |
| B10 | Caro-Kann | 5 | 2/0/3 | 40.0% |
| B14 | Caro-Kann: Exchange Variation | 5 | 3/1/1 | 60.0% |
| D32 | Indian Defense | 4 | 2/0/2 | 50.0% |
| B12 | Caro-Kann: Fantasy Variation | 3 | 0/0/3 | 0.0% |
| D05 | Queen's Pawn Game | 3 | 1/0/2 | 33.3% |
| B25 | Sicilian: Closed | 3 | 0/3/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jul 2006 | Rasmus Ostergaard | 2,173 | 28th Politiken Cup | D34 |
| Apr 2022 | Claus Rossen | 2,159 | ch-DEN G7 Gr-1 | B10 |
| Jul 2006 | Rene Rauer Hansen | 2,096 | 28th Politiken Cup | E81 |
| Apr 2023 | Anton Mehmet Yildiz Marthedal | 2,072 | ch-DEN G7 Gr1 | B12 |
| May 2019 | Per Settergren Sorensen | 2,030 | Copenhagen Challenge | B92 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Copenhagen Challenge | 2019 | 38 | 12 | 1,854 |
| 21st ch-EU | 2021 | 11 | 4 | 1,911 |
| 25th Politiken Cup | 2003 | 11 | 5 | 2,169 |
| Helsingor Xtracon Open | 2016 | 10 | 5 | 1,837 |
| 28th Politiken Cup | 2006 | 9 | 5 | 2,250 |
| ch-Copenhagen | 2004 | 9 | 4.5 | 1,809 |
| Bronshoj SenSommer | 2018 | 7 | 3.5 | 2,022 |
| Copenhagen Bronshoj Open | 2017 | 7 | 2.5 | 1,784 |
Interactive opening tree from all 147 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Thomas Nielsen's chess games?
147 games by Thomas Nielsen, 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 Thomas Nielsen has played.
What does Thomas Nielsen play on the first move as White?
Across 68 games with White in our database, Thomas Nielsen opens with 1.d4 (82% of games), 1.c4 (15% of games), 1.e4 (3% of games). Against 1.e4 as Black, Thomas Nielsen answers 1...c6 (84% of games), 1...c5 (16% of games). Against 1.d4: 1...d5 (71% of games), 1...Nf6 (29% of games).
What openings does Thomas Nielsen play as White?
As White, Thomas Nielsen's most-played openings in our database are: Slav Defense (6 games, 33.3% win rate); King's Indian Defense: Averbakh System (6 games, 16.7% win rate); Indian Defense (6 games, 16.7% win rate). The full breakdown of 68 games with White is in the table above.
What openings does Thomas Nielsen play as Black?
As Black, Thomas Nielsen most often plays: Queen's Gambit Declined (12 games, 50.0% win rate); Caro-Kann: Classical (8 games, 12.5% win rate); Caro-Kann: Advance Variation (6 games, 16.7% win rate). See the table above for the top ten Black openings across 79 games.
What is Thomas Nielsen's FIDE rating?
Thomas Nielsen is currently rated 1,975 in classical chess. Peak classical rating: 2,066 (Apr 2003).
How many games has Thomas Nielsen played?
Our database contains 147 games by Thomas Nielsen, covering Apr 2003 to Jul 2026. Overall record: 46 wins, 35 draws, 66 losses (31.3% win rate).
How do I prepare against Thomas Nielsen?
147 games by Thomas Nielsen 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.