Prepare against William Olsson
IM · Sweden · World #2,113 classical · FIDE ID 1741721
When preparing against William Olsson, expect 1.c4 in 88% of White games. Against 1.e4 the reply is 1...c5 (87% of games); against 1.d4, 1...d5 (99%). Lowest win rate among frequent openings: English Opening: Symmetrical as White, 32.0% over 25 games.
Our database contains 557 games by William Olsson, covering Feb 2016 to Jul 2026. Below you'll find William Olsson's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout William Olsson 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 | 2,376 | 2,400 | Aug 2023 |
| Rapid | 2,274 | 2,274 | Jul 2026 |
| Blitz | 2,203 | 2,215 | Jun 2025 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 557 | 227 | 85 | 245 | 40.8% |
| As White | 271 | 121 | 39 | 111 | 44.6% |
| As Black | 286 | 106 | 46 | 134 | 37.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of William Olsson's games — the same tree the interactive prep board lets you walk to any depth. Scores are from William Olsson's side.
First moves as White (271 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c4 | 238 | 87.8% | 52.3% |
| Nf3 | 18 | 6.6% | 41.7% |
| d4 | 15 | 5.5% | 56.7% |
Main lines as White
- 1.c4 — 88% of White games, 52.3% score
- …Nf6 (26% of these games) — Olsson usually continues g3 (53.3% score)
- …e5 (22% of these games) — Olsson usually continues g3 (60.5% score)
- …e6 (20% of these games) — Olsson usually continues g3 (46.0% score)
- 1.Nf3 — 7% of White games, 41.7% score
- …Nf6 (39% of these games) — Olsson usually continues c4 (75.0% score)
- …c5 (28% of these games) — Olsson usually continues c4 (30.0% score)
- …d5 (17% of these games) — Olsson usually continues c4 (25.0% score)
As Black against 1.e4 (137 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 119 | 86.9% | 39.5% |
| e5 | 18 | 13.1% | 61.1% |
As Black against 1.d4 (89 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 88 | 98.9% | 49.4% |
| Nf6 | 1 | 1.1% | 50.0% |
William Olsson's chess games
All 557 games by William Olsson in the Chess.ceo database (Feb 2016 - 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: 227 wins, 85 draws, 245 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A10 | English Opening | 81 | 42/6/33 | 51.9% |
| A20 | English Opening: Reverse Sicilian | 54 | 27/10/17 | 50.0% |
| A36 | English Opening: Symmetrical | 25 | 8/3/14 | 32.0% |
| E05 | Catalan | 22 | 9/3/10 | 40.9% |
| A13 | English Opening: Neo-Catalan | 22 | 8/2/12 | 36.4% |
| A11 | English Opening: Slav Setup | 18 | 9/2/7 | 50.0% |
| A26 | Modern Defense | 14 | 3/4/7 | 21.4% |
| D02 | Indian Defense | 6 | 3/2/1 | 50.0% |
| A15 | Slav Defense | 5 | 2/1/2 | 40.0% |
| A10 | English Opening: Dutch Defense | 4 | 1/1/2 | 25.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D11 | Slav Defense | 49 | 19/9/21 | 38.8% |
| B76 | Sicilian: Dragon | 49 | 16/4/29 | 32.7% |
| D43 | Semi-Slav Defense | 21 | 7/6/8 | 33.3% |
| B50 | Sicilian | 21 | 7/2/12 | 33.3% |
| B23 | Sicilian: Closed | 19 | 7/1/11 | 36.8% |
| A07 | Réti Opening | 16 | 6/2/8 | 37.5% |
| A36 | English Opening: Symmetrical | 15 | 6/2/7 | 40.0% |
| B51 | Sicilian: Moscow Variation | 14 | 5/3/6 | 35.7% |
| A11 | English Opening: Slav Setup | 10 | 1/4/5 | 10.0% |
| B22 | Sicilian: Alapin | 10 | 4/3/3 | 40.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 2025 | Andrey Esipenko | 2,699 | Titled Tue Late | B53 |
| Dec 2023 | Alexandr Fier | 2,545 | Titled Tue Late | E63 |
| Oct 2023 | Conrad Holt | 2,540 | Titled Tue Late | D31 |
| Mar 2023 | Diego Flores | 2,532 | Titled Tue Late | A36 |
| Sep 2023 | Raymond Song | 2,516 | Titled Tue Early | A36 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2025 | 248 | 102.5 | 2,228 |
| Vaxjo Open | 2024 | 22 | 10.5 | 2,087 |
| Norrkoeping Easter Open | 2024 | 21 | 14.5 | 2,298 |
| Gothenburg Manhem | 2023 | 18 | 6.5 | 2,196 |
| ch-SWE U20 | 2022 | 18 | 11.5 | 2,332 |
| UKR-SWE Online Battle | 2020 | 17 | 8 | 2,261 |
| Gothenburg Open | 2023 | 17 | 6.5 | 1,991 |
| TCh-SWE Elitserien | 2026 | 12 | 5.5 | 2,391 |
Interactive opening tree from all 557 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find William Olsson's chess games?
557 games by William Olsson, from Feb 2016 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 William Olsson has played.
What does William Olsson play on the first move as White?
Across 271 games with White in our database, William Olsson opens with 1.c4 (88% of games), 1.Nf3 (7% of games), 1.d4 (6% of games). Against 1.e4 as Black, William Olsson answers 1...c5 (87% of games), 1...e5 (13% of games). Against 1.d4: 1...d5 (99% of games), 1...Nf6 (1% of games).
What openings does William Olsson play as White?
As White, William Olsson's most-played openings in our database are: English Opening (81 games, 51.9% win rate); English Opening: Reverse Sicilian (54 games, 50.0% win rate); English Opening: Symmetrical (25 games, 32.0% win rate). The full breakdown of 271 games with White is in the table above.
What openings does William Olsson play as Black?
As Black, William Olsson most often plays: Slav Defense (49 games, 38.8% win rate); Sicilian: Dragon (49 games, 32.7% win rate); Semi-Slav Defense (21 games, 33.3% win rate). See the table above for the top ten Black openings across 286 games.
What is William Olsson's FIDE rating?
William Olsson is currently rated 2,376 in classical chess, 2,274 in rapid and 2,203 in blitz. Peak classical rating: 2,400 (Aug 2023).
How many games has William Olsson played?
Our database contains 557 games by William Olsson, covering Feb 2016 to Jul 2026. Overall record: 227 wins, 85 draws, 245 losses (40.8% win rate).
How do I prepare against William Olsson?
557 games by William Olsson 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.