Prepare against Simon Thorhallsson
FM · Iceland · World #8,102 classical · FIDE ID 2310090
Our database contains 1,100 games by Simon Thorhallsson, covering Jul 2012 to Jul 2026. Below you'll find Simon Thorhallsson's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Simon Thorhallsson 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 | 2,203 | 2,284 | Oct 2021 |
| Rapid | 2,223 | 2,223 | Jul 2026 |
| Blitz | 2,334 | 2,347 | Jun 2025 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 1,100 | 471 | 116 | 513 | 42.8% |
| As White | 553 | 240 | 53 | 260 | 43.4% |
| As Black | 547 | 231 | 63 | 253 | 42.2% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Simon Thorhallsson's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Simon Thorhallsson's side.
First moves as White (553 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 231 | 41.8% | 49.4% |
| e4 | 208 | 37.6% | 43.3% |
| Nf3 | 73 | 13.2% | 47.3% |
| g3 | 33 | 6.0% | 63.6% |
| b3 | 3 | 0.5% | 66.7% |
| g4 | 2 | 0.4% | 100.0% |
Main lines as White
- 1.d4 — 42% of White games, 49.4% score
- …Nf6 (52% of these games) — Thorhallsson usually continues c4 (44.3% score)
- …d5 (28% of these games) — Thorhallsson usually continues c4 (36.2% score)
- …e6 (6% of these games) — Thorhallsson usually continues c4 (50.0% score)
- 1.e4 — 38% of White games, 43.3% score
- …c5 (46% of these games) — Thorhallsson usually continues Nf3 (44.6% score)
- …e6 (15% of these games) — Thorhallsson usually continues d4 (58.6% score)
- …e5 (14% of these games) — Thorhallsson usually continues Nf3 (50.0% score)
As Black against 1.e4 (247 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 113 | 45.7% | 52.2% |
| d6 | 42 | 17.0% | 51.2% |
| g6 | 28 | 11.3% | 50.0% |
| e6 | 25 | 10.1% | 60.0% |
| d5 | 17 | 6.9% | 41.2% |
| c6 | 12 | 4.9% | 62.5% |
As Black against 1.d4 (192 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 107 | 55.7% | 47.7% |
| d5 | 53 | 27.6% | 48.1% |
| g6 | 17 | 8.9% | 47.1% |
| d6 | 13 | 6.8% | 53.8% |
| c5 | 2 | 1.0% | 50.0% |
Simon Thorhallsson's chess games
All 1,100 games by Simon Thorhallsson in the Chess.ceo database (Jul 2012 - 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: 471 wins, 116 draws, 513 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B23 | Sicilian: Closed | 46 | 15/5/26 | 32.6% |
| A62 | Catalan | 31 | 9/4/18 | 29.0% |
| A00 | Hungarian Opening | 31 | 19/3/9 | 61.3% |
| A07 | Réti Opening | 30 | 12/2/16 | 40.0% |
| D02 | London System | 25 | 12/3/10 | 48.0% |
| A46 | Indian Defense | 25 | 14/0/11 | 56.0% |
| B29 | Sicilian | 18 | 6/1/11 | 33.3% |
| D11 | Slav Defense | 17 | 5/2/10 | 29.4% |
| A48 | King's Indian Defense | 15 | 5/2/8 | 33.3% |
| A13 | English Opening | 14 | 6/3/5 | 42.9% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B06 | Modern Defense | 49 | 23/3/23 | 46.9% |
| B42 | Sicilian | 47 | 24/2/21 | 51.1% |
| D35 | Indian Defense | 37 | 14/5/18 | 37.8% |
| A15 | English Opening | 27 | 9/6/12 | 33.3% |
| C41 | Philidor | 27 | 10/3/14 | 37.0% |
| B90 | Sicilian: Najdorf | 22 | 7/7/8 | 31.8% |
| D00 | London System | 18 | 8/2/8 | 44.4% |
| B01 | Scandinavian Defense: Main Line | 16 | 6/1/9 | 37.5% |
| B00 | Pirc Defense | 16 | 10/2/4 | 62.5% |
| A05 | Réti Opening | 14 | 5/0/9 | 35.7% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Apr 2025 | Matthias Bluebaum | 2,662 | Titled Tue Late | D00 |
| Jun 2025 | Denis Lazavik | 2,580 | Titled Tue Late | B23 |
| Jul 2025 | Krikor Sevag Mekhitarian | 2,564 | Titled Tue Early | E90 |
| Feb 2025 | Vignir Vatnar Stefansson | 2,546 | Titled Tue Late | A00 |
| Jan 2025 | Andrew Tang | 2,529 | Titled Tue Early | D00 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2026 | 777 | 374.5 | 2,222 |
| Reykjavik Open | 2019 | 73 | 34 | 2,034 |
| Uppsala Young Champions | 2019 | 27 | 14 | 2,087 |
| 1st 3-0 Thursday | 2026 | 22 | 12 | 2,261 |
| Reykjavik Blitz Open | 2022 | 11 | 6 | 2,095 |
| 21st ch-EU | 2021 | 11 | 5 | 2,237 |
| TCh-ISL Kvika 2025-26 | 2026 | 10 | 2 | 2,132 |
| ch-ISL Open | 2013 | 10 | 5.5 | 1,836 |
Interactive opening tree from all 1,100 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Simon Thorhallsson's chess games?
1,100 games by Simon Thorhallsson, from Jul 2012 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 Simon Thorhallsson has played.
What does Simon Thorhallsson play on the first move as White?
Across 553 games with White in our database, Simon Thorhallsson opens with 1.d4 (42% of games), 1.e4 (38% of games), 1.Nf3 (13% of games). Against 1.e4 as Black, Simon Thorhallsson answers 1...c5 (46% of games), 1...d6 (17% of games), 1...g6 (11% of games). Against 1.d4: 1...Nf6 (56% of games), 1...d5 (28% of games), 1...g6 (9% of games).
What openings does Simon Thorhallsson play as White?
As White, Simon Thorhallsson's most-played openings in our database are: Sicilian: Closed (46 games, 32.6% win rate); Catalan (31 games, 29.0% win rate); Hungarian Opening (31 games, 61.3% win rate). The full breakdown of 553 games with White is in the table above.
What openings does Simon Thorhallsson play as Black?
As Black, Simon Thorhallsson most often plays: Modern Defense (49 games, 46.9% win rate); Sicilian (47 games, 51.1% win rate); Indian Defense (37 games, 37.8% win rate). See the table above for the top ten Black openings across 547 games.
What is Simon Thorhallsson's FIDE rating?
Simon Thorhallsson is currently rated 2,203 in classical chess, 2,223 in rapid and 2,334 in blitz. Peak classical rating: 2,284 (Oct 2021).
How many games has Simon Thorhallsson played?
Our database contains 1,100 games by Simon Thorhallsson, covering Jul 2012 to Jul 2026. Overall record: 471 wins, 116 draws, 513 losses (42.8% win rate).
How do I prepare against Simon Thorhallsson?
1,100 games by Simon Thorhallsson 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.