Prepare against Jon I Horni Nielsen
FRO · World #17,732 classical · FIDE ID 7202105
When preparing against Jon I Horni Nielsen, expect 1.e4 in 99% of White games. Against 1.e4 the reply is 1...e5 (98% of games); against 1.d4, 1...d5 (52%). Lowest win rate among frequent openings: Sicilian as White, 33.3% over 15 games.
Our database contains 183 games by Jon I Horni Nielsen, covering Dec 2015 to Sep 2026. Below you'll find Jon I Horni Nielsen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jon I Horni 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 | 2,078 | 2,108 | Mar 2025 |
| Rapid | 2,036 | 2,044 | May 2026 |
| Blitz | 1,979 | 1,981 | Nov 2024 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 183 | 64 | 35 | 84 | 35.0% |
| As White | 93 | 33 | 17 | 43 | 35.5% |
| As Black | 90 | 31 | 18 | 41 | 34.4% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jon I Horni Nielsen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jon I Horni Nielsen's side.
First moves as White (93 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 92 | 98.9% | 44.0% |
| Nc3 | 1 | 1.1% | 100.0% |
Main lines as White
- 1.e4 — 99% of White games, 44.0% score
- …c5 (39% of these games) — Nielsen usually continues Nf3 (38.6% score)
- …e5 (35% of these games) — Nielsen usually continues Nf3 (51.6% score)
- …e6 (8% of these games) — Nielsen usually continues d4 (33.3% score)
- 1.Nc3 — 1% of White games, 100.0% score
- …Nf6 (100% of these games) — Nielsen usually continues e4 (100.0% score)
As Black against 1.e4 (51 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 50 | 98.0% | 59.0% |
| c5 | 1 | 2.0% | 0.0% |
As Black against 1.d4 (27 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 14 | 51.9% | 25.0% |
| Nf6 | 10 | 37.0% | 25.0% |
| e6 | 2 | 7.4% | 25.0% |
| Nc6 | 1 | 3.7% | 0.0% |
Jon I Horni Nielsen's chess games
All 183 games by Jon I Horni Nielsen in the Chess.ceo database (Dec 2015 - Sep 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: 64 wins, 35 draws, 84 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B22 | Sicilian | 15 | 5/2/8 | 33.3% |
| B90 | Sicilian: Najdorf | 9 | 2/2/5 | 22.2% |
| C03 | French: Tarrasch Variation | 6 | 0/4/2 | 0.0% |
| C78 | Ruy Lopez: Morphy Defense | 6 | 2/1/3 | 33.3% |
| C55 | Italian Game | 5 | 3/1/1 | 60.0% |
| B52 | Sicilian: Moscow Variation | 5 | 3/1/1 | 60.0% |
| C41 | Philidor | 4 | 3/0/1 | 75.0% |
| B06 | Modern Defense | 3 | 1/1/1 | 33.3% |
| B01 | Scandinavian Defense: Main Line | 3 | 1/1/1 | 33.3% |
| B19 | Caro-Kann: Classical | 3 | 2/0/1 | 66.7% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C50 | Italian Game | 12 | 9/2/1 | 75.0% |
| C77 | Ruy Lopez: Morphy Defense | 9 | 4/1/4 | 44.4% |
| D30 | Queen's Gambit Declined | 7 | 1/1/5 | 14.3% |
| A07 | Réti Opening | 4 | 1/1/2 | 25.0% |
| E17 | Queen's Indian Defense | 4 | 1/0/3 | 25.0% |
| C45 | Scotch Game | 4 | 0/1/3 | 0.0% |
| C54 | Italian Game: Classical Variation | 4 | 3/0/1 | 75.0% |
| A13 | English Opening | 4 | 0/2/2 | 0.0% |
| D35 | Indian Defense | 3 | 0/2/1 | 0.0% |
| C68 | Ruy Lopez: Exchange | 3 | 2/0/1 | 66.7% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jul 2023 | Peter Balint | 2,233 | Piestany Slovakia Open A | A31 |
| Sep 2026 | Muhamet Asllani | 2,229 | 46th FIDE Chess Olympiad Samarkand 2026 | Open | Matches 1-12 | C60 |
| Aug 2022 | Benedikt Briem | 2,223 | ch-Nordic U17 | E18 |
| Sep 2021 | Casper Liu | 2,177 | ch-Nordic U18 | B52 |
| Aug 2022 | Paulius Meskenas | 2,177 | ch-Nordic U17 | C85 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Runavik Open | 2018 | 23 | 8.5 | 1,631 |
| Faroes Open | 2018 | 16 | 6.5 | 1,840 |
| ch-Nordic U13 | 2018 | 12 | 4 | 1,606 |
| 8th EU Small Countries Blitz Open | 2023 | 10 | 4.5 | 1,929 |
| Reykjavik Open | 2017 | 10 | 4 | 1,926 |
| Oyri Rokur Open | 2016 | 9 | 4.5 | 1,456 |
| Piestany Slovakia Open A | 2023 | 9 | 4 | 2,127 |
| 46th FIDE Chess Olympiad Samarkand 2026 | Open | Matches 1-12 | 2026 | 9 | 3.5 | 2,107 |
Interactive opening tree from all 183 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jon I Horni Nielsen's chess games?
183 games by Jon I Horni Nielsen, from Dec 2015 to Sep 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 Jon I Horni Nielsen has played.
What does Jon I Horni Nielsen play on the first move as White?
Across 93 games with White in our database, Jon I Horni Nielsen opens with 1.e4 (99% of games), 1.Nc3 (1% of games). Against 1.e4 as Black, Jon I Horni Nielsen answers 1...e5 (98% of games), 1...c5 (2% of games). Against 1.d4: 1...d5 (52% of games), 1...Nf6 (37% of games), 1...e6 (7% of games).
What openings does Jon I Horni Nielsen play as White?
As White, Jon I Horni Nielsen's most-played openings in our database are: Sicilian (15 games, 33.3% win rate); Sicilian: Najdorf (9 games, 22.2% win rate); French: Tarrasch Variation (6 games, 0.0% win rate). The full breakdown of 93 games with White is in the table above.
What openings does Jon I Horni Nielsen play as Black?
As Black, Jon I Horni Nielsen most often plays: Italian Game (12 games, 75.0% win rate); Ruy Lopez: Morphy Defense (9 games, 44.4% win rate); Queen's Gambit Declined (7 games, 14.3% win rate). See the table above for the top ten Black openings across 90 games.
What is Jon I Horni Nielsen's FIDE rating?
Jon I Horni Nielsen is currently rated 2,078 in classical chess, 2,036 in rapid and 1,979 in blitz. Peak classical rating: 2,108 (Mar 2025).
How many games has Jon I Horni Nielsen played?
Our database contains 183 games by Jon I Horni Nielsen, covering Dec 2015 to Sep 2026. Overall record: 64 wins, 35 draws, 84 losses (35.0% win rate).
How do I prepare against Jon I Horni Nielsen?
183 games by Jon I Horni 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.