Prepare against Klaus Nielsen
DNK · World #25,676 classical · FIDE ID 1410210
Our database contains 173 games by Klaus Nielsen, covering Jul 2005 to Jul 2026. Below you'll find Klaus Nielsen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Klaus 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 | 2,013 | 2,146 | Mar 2017 |
| Rapid | 1,969 | 2,098 | Dec 2014 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 173 | 68 | 43 | 62 | 39.3% |
| As White | 86 | 36 | 25 | 25 | 41.9% |
| As Black | 87 | 32 | 18 | 37 | 36.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Klaus Nielsen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Klaus Nielsen's side.
First moves as White (86 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 66 | 76.7% | 53.8% |
| e4 | 10 | 11.6% | 65.0% |
| Nf3 | 5 | 5.8% | 70.0% |
| c4 | 2 | 2.3% | 50.0% |
| c3 | 2 | 2.3% | 100.0% |
| f4 | 1 | 1.2% | 0.0% |
Main lines as White
- 1.d4 — 77% of White games, 53.8% score
- …Nf6 (56% of these games) — Nielsen usually continues Nf3 (50.0% score)
- …d5 (21% of these games) — Nielsen usually continues Nf3 (38.9% score)
- …e6 (8% of these games) — Nielsen usually continues Nf3 (0.0% score)
- 1.e4 — 12% of White games, 65.0% score
- …e5 (40% of these games) — Nielsen usually continues Nf3 (66.7% score)
- …c5 (30% of these games) — Nielsen usually continues Nf3 (50.0% score)
- …g6 (10% of these games) — Nielsen usually continues d4 (100.0% score)
As Black against 1.e4 (42 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 28 | 66.7% | 55.4% |
| d5 | 7 | 16.7% | 28.6% |
| e5 | 5 | 11.9% | 30.0% |
| d6 | 2 | 4.8% | 50.0% |
As Black against 1.d4 (33 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 28 | 84.8% | 48.2% |
| Nf6 | 5 | 15.2% | 40.0% |
Klaus Nielsen's chess games
All 173 games by Klaus Nielsen in the Chess.ceo database (Jul 2005 - 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: 68 wins, 43 draws, 62 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D05 | Indian Defense | 21 | 7/5/9 | 33.3% |
| D05 | Colle System | 8 | 4/1/3 | 50.0% |
| D03 | Torre Attack | 7 | 1/3/3 | 14.3% |
| B06 | Modern Defense | 5 | 1/3/1 | 20.0% |
| D11 | Slav Defense | 4 | 1/2/1 | 25.0% |
| D02 | Queen's Pawn Game | 4 | 2/0/2 | 50.0% |
| A80 | Dutch Defense | 3 | 1/2/0 | 33.3% |
| D00 | Queen's Pawn Game: Chigorin Variation | 3 | 2/1/0 | 66.7% |
| A47 | Horwitz Defense | 3 | 2/1/0 | 66.7% |
| A48 | King's Indian Defense | 2 | 2/0/0 | 100.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D32 | Queen's Gambit Declined | 16 | 9/2/5 | 56.3% |
| B35 | Sicilian: Accelerated Dragon | 10 | 5/1/4 | 50.0% |
| B23 | Sicilian: Closed | 7 | 4/1/2 | 57.1% |
| A25 | English Opening: Reverse Sicilian | 7 | 4/0/3 | 57.1% |
| B30 | Sicilian: Rossolimo | 6 | 2/1/3 | 33.3% |
| A84 | Queen's Pawn Game | 5 | 0/3/2 | 0.0% |
| B01 | Scandinavian Defense: Main Line | 4 | 0/1/3 | 0.0% |
| A92 | Catalan | 3 | 1/1/1 | 33.3% |
| A35 | English Opening: Symmetrical | 3 | 1/1/1 | 33.3% |
| B20 | Sicilian | 3 | 2/1/0 | 66.7% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 2016 | Carsten Hoi | 2,390 | Farum Fureso Open | D25 |
| Feb 2015 | Sandi Stojanovski | 2,231 | Copenhagen Bronshoj Open | A46 |
| Jan 2016 | Henrik Dahl Pedersen | 2,227 | Copenhagen Bronshoj Open | D32 |
| Feb 2014 | Michael Nielsen | 2,190 | Copenhagen Bronshoj Open | A85 |
| Jan 2016 | Mikkel Manosri Jacobsen | 2,188 | Copenhagen Bronshoj Open | D04 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Copenhagen Bronshoj Open | 2016 | 27 | 16 | 2,174 |
| Helsingor Xtracon Open | 2018 | 20 | 11 | 2,038 |
| ch-DEN G7-1 | 2012 | 13 | 7.5 | 2,100 |
| 36th Politiken Cup | 2014 | 10 | 5.5 | 2,018 |
| 34th Politiken Cup | 2012 | 10 | 5.5 | 2,107 |
| 32nd Politiken Cup | 2010 | 10 | 6 | 2,051 |
| Copenhagen Challenge | 2012 | 9 | 5 | 2,007 |
| ch-Copenhagen Bronshoj A | 2012 | 9 | 2.5 | 2,008 |
Interactive opening tree from all 173 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Klaus Nielsen's chess games?
173 games by Klaus Nielsen, from Jul 2005 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 Klaus Nielsen has played.
What does Klaus Nielsen play on the first move as White?
Across 86 games with White in our database, Klaus Nielsen opens with 1.d4 (77% of games), 1.e4 (12% of games), 1.Nf3 (6% of games). Against 1.e4 as Black, Klaus Nielsen answers 1...c5 (67% of games), 1...d5 (17% of games), 1...e5 (12% of games). Against 1.d4: 1...d5 (85% of games), 1...Nf6 (15% of games).
What openings does Klaus Nielsen play as White?
As White, Klaus Nielsen's most-played openings in our database are: Indian Defense (21 games, 33.3% win rate); Colle System (8 games, 50.0% win rate); Torre Attack (7 games, 14.3% win rate). The full breakdown of 86 games with White is in the table above.
What openings does Klaus Nielsen play as Black?
As Black, Klaus Nielsen most often plays: Queen's Gambit Declined (16 games, 56.3% win rate); Sicilian: Accelerated Dragon (10 games, 50.0% win rate); Sicilian: Closed (7 games, 57.1% win rate). See the table above for the top ten Black openings across 87 games.
What is Klaus Nielsen's FIDE rating?
Klaus Nielsen is currently rated 2,013 in classical chess, 1,969 in rapid. Peak classical rating: 2,146 (Mar 2017).
How many games has Klaus Nielsen played?
Our database contains 173 games by Klaus Nielsen, covering Jul 2005 to Jul 2026. Overall record: 68 wins, 43 draws, 62 losses (39.3% win rate).
How do I prepare against Klaus Nielsen?
173 games by Klaus 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.