Prepare against Jon Ulfur Hafthorsson
Iceland · World #40,064 classical · FIDE ID 2323206
When preparing against Jon Ulfur Hafthorsson, expect 1.d4 in 55% of White games. Against 1.e4 the reply is 1...e5 (57% of games); against 1.d4, 1...Nf6 (93%).
Our database contains 47 games by Jon Ulfur Hafthorsson, covering Sep 2021 to Jul 2026. Below you'll find Jon Ulfur Hafthorsson's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jon Ulfur Hafthorsson 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 | 1,935 | 1,935 | Jul 2026 |
| Rapid | 1,607 | 1,607 | Jul 2026 |
| Blitz | 1,734 | 1,755 | Mar 2024 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 47 | 14 | 10 | 23 | 29.8% |
| As White | 20 | 7 | 5 | 8 | 35.0% |
| As Black | 27 | 7 | 5 | 15 | 25.9% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jon Ulfur Hafthorsson's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jon Ulfur Hafthorsson's side.
First moves as White (20 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 11 | 55.0% | 50.0% |
| e4 | 8 | 40.0% | 43.8% |
| b3 | 1 | 5.0% | 50.0% |
Main lines as White
- 1.d4 — 55% of White games, 50.0% score
- …Nf6 (45% of these games) — Hafthorsson usually continues Nc3 (50.0% score)
- …d5 (27% of these games) — Hafthorsson usually continues Nc3 (0.0% score)
- …d6 (18% of these games) — Hafthorsson usually continues Nc3 (100.0% score)
- 1.e4 — 40% of White games, 43.8% score
- …e5 (38% of these games) — Hafthorsson usually continues Nc3 (83.3% score)
- …e6 (25% of these games) — Hafthorsson usually continues e5 (50.0% score)
- …c5 (25% of these games) — Hafthorsson usually continues Nc3 (25.0% score)
As Black against 1.e4 (7 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 4 | 57.1% | 50.0% |
| c5 | 3 | 42.9% | 33.3% |
As Black against 1.d4 (15 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 14 | 93.3% | 35.7% |
| a5 | 1 | 6.7% | 50.0% |
Jon Ulfur Hafthorsson's chess games
All 47 games by Jon Ulfur Hafthorsson in the Chess.ceo database (Sep 2021 - 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: 14 wins, 10 draws, 23 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D00 | Queen's Pawn Game: Chigorin Variation | 5 | 0/0/5 | 0.0% |
| C29 | Vienna Game | 3 | 2/1/0 | 66.7% |
| A45 | Queen's Pawn Game | 3 | 2/1/0 | 66.7% |
| C00 | French Defense | 2 | 0/1/1 | 0.0% |
| B08 | Rat Defense | 2 | 2/0/0 | 100.0% |
| B26 | Sicilian: Closed | 2 | 0/1/1 | 0.0% |
| B09 | Pirc Defense | 1 | 0/0/1 | 0.0% |
| A80 | Dutch Defense | 1 | 1/0/0 | 100.0% |
| A01 | Nimzovich-Larsen attack | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E61 | King's Indian Defense | 6 | 1/2/3 | 16.7% |
| A26 | English Opening | 2 | 0/0/2 | 0.0% |
| C54 | Italian Game | 2 | 1/0/1 | 50.0% |
| A56 | Benoni Defense | 2 | 0/0/2 | 0.0% |
| E90 | King's Indian Defense: Orthodox Variation | 2 | 1/0/1 | 50.0% |
| A48 | London System | 2 | 1/0/1 | 50.0% |
| A40 | Queen's Pawn Game | 2 | 0/1/1 | 0.0% |
| B30 | Sicilian: Rossolimo | 2 | 0/1/1 | 0.0% |
| C45 | Scotch Game | 1 | 0/0/1 | 0.0% |
| B22 | Sicilian: Alapin | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Apr 2025 | Meng Liu | 2,079 | Reykjavik Open | E71 |
| Oct 2022 | Wilhelmus J Van Hoek | 1,843 | 46th Guernsey Open | C47 |
| Oct 2022 | Claude Dubois | 1,807 | 46th Guernsey Open | C50 |
| Apr 2023 | Alexander Boschmann | 1,779 | Reykjavik Open | A80 |
| Jul 2025 | Peter Nielsen | 1,775 | Jonkoping Open | B08 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Reykjavik Open | 2025 | 25 | 10 | 1,816 |
| Jonkoping Open | 2025 | 8 | 3.5 | 1,887 |
| 46th Guernsey Open | 2022 | 7 | 4 | 1,909 |
| Reykjavik Kvika Open | 2022 | 7 | 1.5 | 1,295 |
Interactive opening tree from all 47 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jon Ulfur Hafthorsson's chess games?
47 games by Jon Ulfur Hafthorsson, from Sep 2021 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 Jon Ulfur Hafthorsson has played.
What does Jon Ulfur Hafthorsson play on the first move as White?
Across 20 games with White in our database, Jon Ulfur Hafthorsson opens with 1.d4 (55% of games), 1.e4 (40% of games), 1.b3 (5% of games). Against 1.e4 as Black, Jon Ulfur Hafthorsson answers 1...e5 (57% of games), 1...c5 (43% of games). Against 1.d4: 1...Nf6 (93% of games), 1...a5 (7% of games).
What openings does Jon Ulfur Hafthorsson play as White?
As White, Jon Ulfur Hafthorsson's most-played openings in our database are: Queen's Pawn Game: Chigorin Variation (5 games, 0.0% win rate); Vienna Game (3 games, 66.7% win rate); Queen's Pawn Game (3 games, 66.7% win rate). The full breakdown of 20 games with White is in the table above.
What openings does Jon Ulfur Hafthorsson play as Black?
As Black, Jon Ulfur Hafthorsson most often plays: King's Indian Defense (6 games, 16.7% win rate); English Opening (2 games, 0.0% win rate); Italian Game (2 games, 50.0% win rate). See the table above for the top ten Black openings across 27 games.
What is Jon Ulfur Hafthorsson's FIDE rating?
Jon Ulfur Hafthorsson is currently rated 1,935 in classical chess, 1,607 in rapid and 1,734 in blitz. Peak classical rating: 1,935 (Jul 2026).
How many games has Jon Ulfur Hafthorsson played?
Our database contains 47 games by Jon Ulfur Hafthorsson, covering Sep 2021 to Jul 2026. Overall record: 14 wins, 10 draws, 23 losses (29.8% win rate).
How do I prepare against Jon Ulfur Hafthorsson?
47 games by Jon Ulfur Hafthorsson 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.