Prepare against Karl-Emil Elmer Nielsen-Refs
CM · DNK · World #8,266 classical · FIDE ID 1452797
When preparing against Karl-Emil Elmer Nielsen-Refs, expect 1.d4 in 91% of White games. Against 1.e4 the reply is 1...c5 (73% of games); against 1.d4, 1...Nf6 (92%). Lowest win rate among frequent openings: Benoni Defense as White, 0.0% over 18 games.
Our database contains 509 games by Karl-Emil Elmer Nielsen-Refs, covering Oct 2017 to Aug 2026. Below you'll find Karl-Emil Elmer Nielsen-Refs's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Karl-Emil Elmer Nielsen-Refs 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 | 2,200 | 2,239 | Aug 2024 |
| Rapid | 2,098 | 2,098 | Aug 2026 |
| Blitz | 1,955 | 1,984 | Jun 2022 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 509 | 121 | 42 | 346 | 23.8% |
| As White | 253 | 63 | 26 | 164 | 24.9% |
| As Black | 256 | 58 | 16 | 182 | 22.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Karl-Emil Elmer Nielsen-Refs's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Karl-Emil Elmer Nielsen-Refs's side.
First moves as White (253 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 229 | 90.5% | 29.5% |
| Nf3 | 8 | 3.2% | 37.5% |
| e4 | 5 | 2.0% | 50.0% |
| c4 | 4 | 1.6% | 25.0% |
| a3 | 3 | 1.2% | 0.0% |
| b3 | 2 | 0.8% | 50.0% |
Main lines as White
- 1.d4 — 91% of White games, 29.5% score
- …Nf6 (59% of these games) — Nielsen-Refs usually continues c4 (30.9% score)
- …d5 (27% of these games) — Nielsen-Refs usually continues c4 (27.1% score)
- …e6 (3% of these games) — Nielsen-Refs usually continues c4 (40.0% score)
- 1.Nf3 — 3% of White games, 37.5% score
- …Nf6 (38% of these games) — Nielsen-Refs usually continues d4 (33.3% score)
- …g6 (25% of these games) — Nielsen-Refs usually continues d4 (50.0% score)
- …c5 (13% of these games) — Nielsen-Refs usually continues g3 (100.0% score)
As Black against 1.e4 (113 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 83 | 73.5% | 30.7% |
| e6 | 28 | 24.8% | 19.6% |
| c6 | 1 | 0.9% | 0.0% |
| d6 | 1 | 0.9% | 100.0% |
As Black against 1.d4 (87 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 80 | 92.0% | 20.6% |
| e6 | 2 | 2.3% | 0.0% |
| h6 | 1 | 1.1% | 0.0% |
| d6 | 1 | 1.1% | 100.0% |
Karl-Emil Elmer Nielsen-Refs's chess games
All 509 games by Karl-Emil Elmer Nielsen-Refs in the Chess.ceo database (Oct 2017 - 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: 121 wins, 42 draws, 346 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D02 | London System | 45 | 13/8/24 | 28.9% |
| D35 | Indian Defense | 42 | 8/4/30 | 19.0% |
| E48 | Nimzo-Indian: Rubinstein System | 23 | 9/3/11 | 39.1% |
| A58 | Benoni Defense | 18 | 0/3/15 | 0.0% |
| E94 | King's Indian Defense: Orthodox Variation | 14 | 3/3/8 | 21.4% |
| D11 | Slav Defense | 12 | 2/0/10 | 16.7% |
| D02 | Queen's Pawn Game | 11 | 2/1/8 | 18.2% |
| D85 | Grünfeld Defense | 9 | 3/1/5 | 33.3% |
| E30 | Nimzo-Indian: Leningrad Variation | 7 | 2/0/5 | 28.6% |
| B06 | Modern Defense | 6 | 1/0/5 | 16.7% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B50 | Sicilian | 22 | 5/3/14 | 22.7% |
| B78 | Sicilian: Dragon | 19 | 6/0/13 | 31.6% |
| A04 | Réti Opening | 18 | 3/1/14 | 16.7% |
| B23 | Sicilian: Closed | 15 | 2/1/12 | 13.3% |
| A46 | Indian Defense | 15 | 3/0/12 | 20.0% |
| A15 | English Opening | 11 | 4/0/7 | 36.4% |
| E00 | Catalan | 10 | 2/0/8 | 20.0% |
| C11 | French: Classical Variation | 9 | 0/0/9 | 0.0% |
| B90 | Sicilian: Najdorf | 8 | 3/1/4 | 37.5% |
| C02 | French: Advance Variation | 7 | 2/0/5 | 28.6% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Mar 2023 | Benedict Krause | 2,421 | Walsrode Chessemy Open A | D87 |
| May 2026 | Vladimir Bochnicka | 2,369 | Titled Tuesday | A48 |
| Mar 2025 | M ECU Medina | 2,368 | Titled Tue Late | D85 |
| Feb 2025 | Arseny Alavkin | 2,367 | Titled Tue Early | E20 |
| Oct 2025 | Jens Albert Ramsdal | 2,318 | Odense Mester 1 2025 | E49 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2026 | 309 | 63 | 1,926 |
| 2nd 3-0 Thursday | 2026 | 27 | 5.5 | 1,943 |
| 1st 3-0 Thursday | 2026 | 17 | 5.5 | 2,091 |
| ch-DEN Kort 1-2 | 2019 | 10 | 5.5 | 1,598 |
| ch-DEN U14 rapid | 2021 | 9 | 6.5 | 1,874 |
| Walsrode Chessemy Open A | 2023 | 9 | 4 | 2,066 |
| ch-EU U12 | 2019 | 9 | 3 | 1,385 |
| Norway Chess Open A | 2022 | 9 | 3.5 | 2,038 |
Interactive opening tree from all 509 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Karl-Emil Elmer Nielsen-Refs's chess games?
509 games by Karl-Emil Elmer Nielsen-Refs, from Oct 2017 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 Karl-Emil Elmer Nielsen-Refs has played.
What does Karl-Emil Elmer Nielsen-Refs play on the first move as White?
Across 253 games with White in our database, Karl-Emil Elmer Nielsen-Refs opens with 1.d4 (91% of games), 1.Nf3 (3% of games), 1.e4 (2% of games). Against 1.e4 as Black, Karl-Emil Elmer Nielsen-Refs answers 1...c5 (73% of games), 1...e6 (25% of games), 1...c6 (1% of games). Against 1.d4: 1...Nf6 (92% of games), 1...e6 (2% of games), 1...h6 (1% of games).
What openings does Karl-Emil Elmer Nielsen-Refs play as White?
As White, Karl-Emil Elmer Nielsen-Refs's most-played openings in our database are: London System (45 games, 28.9% win rate); Indian Defense (42 games, 19.0% win rate); Nimzo-Indian: Rubinstein System (23 games, 39.1% win rate). The full breakdown of 253 games with White is in the table above.
What openings does Karl-Emil Elmer Nielsen-Refs play as Black?
As Black, Karl-Emil Elmer Nielsen-Refs most often plays: Sicilian (22 games, 22.7% win rate); Sicilian: Dragon (19 games, 31.6% win rate); Réti Opening (18 games, 16.7% win rate). See the table above for the top ten Black openings across 256 games.
What is Karl-Emil Elmer Nielsen-Refs's FIDE rating?
Karl-Emil Elmer Nielsen-Refs is currently rated 2,200 in classical chess, 2,098 in rapid and 1,955 in blitz. Peak classical rating: 2,239 (Aug 2024).
How many games has Karl-Emil Elmer Nielsen-Refs played?
Our database contains 509 games by Karl-Emil Elmer Nielsen-Refs, covering Oct 2017 to Aug 2026. Overall record: 121 wins, 42 draws, 346 losses (23.8% win rate).
How do I prepare against Karl-Emil Elmer Nielsen-Refs?
509 games by Karl-Emil Elmer Nielsen-Refs 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.