Prepare against Thea Nicolajsen
DNK · World #39,541 classical · FIDE ID 1434144
Our database contains 44 games by Thea Nicolajsen, covering Nov 2010 to Aug 2026. Below you'll find Thea Nicolajsen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Thea Nicolajsen 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 | 1,937 | 1,937 | Aug 2026 |
| Rapid | 1,899 | 1,899 | Aug 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 44 | 12 | 9 | 23 | 27.3% |
| As White | 23 | 7 | 4 | 12 | 30.4% |
| As Black | 21 | 5 | 5 | 11 | 23.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Thea Nicolajsen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Thea Nicolajsen's side.
First moves as White (23 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 22 | 95.7% | 40.9% |
| d3 | 1 | 4.3% | 0.0% |
Main lines as White
- 1.d4 — 96% of White games, 40.9% score
- …Nf6 (50% of these games) — Nicolajsen usually continues c4 (40.9% score)
- …d5 (36% of these games) — Nicolajsen usually continues c4 (50.0% score)
- …f5 (5% of these games) — Nicolajsen usually continues e4 (50.0% score)
- 1.d3 — 4% of White games, 0.0% score
- …e5 (100% of these games) — Nicolajsen usually continues e4 (0.0% score)
As Black against 1.e4 (12 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 7 | 58.3% | 42.9% |
| c6 | 5 | 41.7% | 40.0% |
As Black against 1.d4 (7 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 5 | 71.4% | 30.0% |
| d6 | 1 | 14.3% | 0.0% |
| d5 | 1 | 14.3% | 50.0% |
Thea Nicolajsen's chess games
All 44 games by Thea Nicolajsen in the Chess.ceo database (Nov 2010 - Aug 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: 12 wins, 9 draws, 23 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A57 | Benoni Defense | 4 | 0/0/4 | 0.0% |
| D36 | Semi-Slav Defense | 3 | 1/1/1 | 33.3% |
| E32 | Nimzo-Indian: Classical Variation | 2 | 2/0/0 | 100.0% |
| E43 | Nimzo-Indian: Rubinstein System | 2 | 1/0/1 | 50.0% |
| D06 | Queen's Gambit | 2 | 0/0/2 | 0.0% |
| D20 | Queen's Gambit Accepted | 2 | 2/0/0 | 100.0% |
| D35 | Indian Defense | 2 | 0/1/1 | 0.0% |
| D87 | Grünfeld Defense | 1 | 1/0/0 | 100.0% |
| A83 | Dutch Defense | 1 | 0/1/0 | 0.0% |
| A85 | Horwitz Defense | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B13 | Caro-Kann: Exchange Variation | 3 | 1/1/1 | 33.3% |
| A46 | Benoni Defense | 2 | 1/0/1 | 50.0% |
| A31 | Indian Defense | 2 | 0/1/1 | 0.0% |
| B50 | Sicilian | 2 | 1/0/1 | 50.0% |
| B23 | Sicilian: Closed | 2 | 1/0/1 | 50.0% |
| B70 | Sicilian: Dragon | 2 | 1/0/1 | 50.0% |
| B22 | Sicilian: Alapin | 1 | 0/0/1 | 0.0% |
| D02 | London System | 1 | 0/0/1 | 0.0% |
| A01 | Nimzovich-Larsen attack | 1 | 0/0/1 | 0.0% |
| D11 | Queen's Pawn Game | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2012 | Alena Zavgorodniaya | 1,910 | ch-EU U16 Girls | D87 |
| Oct 2013 | Natasa Korbovljanovic | 1,897 | 23rd ch-EU U18 Girls | D35 |
| Oct 2013 | Barbara Skuhala | 1,885 | 23rd ch-EU U18 Girls | E43 |
| Aug 2010 | Katerina Vlckova | 1,609 | 8th ch-EU Union U14 | B78 |
| Apr 2012 | Freja Vangsgaard | 1,574 | ch-Nordic Girls B | E32 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| 8th ch-EU Union U14 | 2010 | 9 | 3.5 | 1,602 |
| 23rd ch-EU U18 Girls | 2013 | 9 | 3.5 | 1,889 |
| ch-EU U16 Girls | 2012 | 8 | 2 | 1,672 |
| ch-DEN Rapid w | 2012 | 6 | 3.5 | 1,580 |
| ch-Nordic Girls B | 2012 | 5 | 3 | 1,645 |
| Pige NM B | 2011 | 4 | 1 | 1,272 |
| Danish Team Rapid Championship 2026 | 2026 | 3 | 0 | 1,742 |
Interactive opening tree from all 44 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Thea Nicolajsen's chess games?
44 games by Thea Nicolajsen, from Nov 2010 to Aug 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 Thea Nicolajsen has played.
What does Thea Nicolajsen play on the first move as White?
Across 23 games with White in our database, Thea Nicolajsen opens with 1.d4 (96% of games), 1.d3 (4% of games). Against 1.e4 as Black, Thea Nicolajsen answers 1...c5 (58% of games), 1...c6 (42% of games). Against 1.d4: 1...Nf6 (71% of games), 1...d6 (14% of games), 1...d5 (14% of games).
What openings does Thea Nicolajsen play as White?
As White, Thea Nicolajsen's most-played openings in our database are: Benoni Defense (4 games, 0.0% win rate); Semi-Slav Defense (3 games, 33.3% win rate); Nimzo-Indian: Classical Variation (2 games, 100.0% win rate). The full breakdown of 23 games with White is in the table above.
What openings does Thea Nicolajsen play as Black?
As Black, Thea Nicolajsen most often plays: Caro-Kann: Exchange Variation (3 games, 33.3% win rate); Benoni Defense (2 games, 50.0% win rate); Indian Defense (2 games, 0.0% win rate). See the table above for the top ten Black openings across 21 games.
What is Thea Nicolajsen's FIDE rating?
Thea Nicolajsen is currently rated 1,937 in classical chess, 1,899 in rapid. Peak classical rating: 1,937 (Aug 2026).
How many games has Thea Nicolajsen played?
Our database contains 44 games by Thea Nicolajsen, covering Nov 2010 to Aug 2026. Overall record: 12 wins, 9 draws, 23 losses (27.3% win rate).
How do I prepare against Thea Nicolajsen?
44 games by Thea Nicolajsen 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.