Prepare against Siyuan Ou
United Kingdom · World #133,689 classical · FIDE ID 343405657
When preparing against Siyuan Ou, expect 1.e4 in 100% of White games. Against 1.e4 the reply is 1...e6 (57% of games); against 1.d4, 1...Nf6 (50%).
Our database contains 32 games by Siyuan Ou, covering May 2023 to Oct 2026. Below you'll find Siyuan Ou's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Siyuan Ou 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 | 1,638 | 1,638 | Oct 2026 |
| Rapid | 1,510 | 1,590 | Jun 2026 |
| Blitz | 1,607 | 1,607 | Oct 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 32 | 7 | 3 | 22 | 21.9% |
| As White | 18 | 4 | 2 | 12 | 22.2% |
| As Black | 14 | 3 | 1 | 10 | 21.4% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Siyuan Ou's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Siyuan Ou's side.
First moves as White (17 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 17 | 100.0% | 29.4% |
Main lines as White
- 1.e4 — 100% of White games, 29.4% score
- …e5 (53% of these games) — Ou usually continues Nf3 (27.8% score)
- …c5 (18% of these games) — Ou usually continues Nf3 (50.0% score)
- …Nf6 (6% of these games) — Ou usually continues e5 (0.0% score)
As Black against 1.e4 (7 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 4 | 57.1% | 37.5% |
| c5 | 3 | 42.9% | 0.0% |
As Black against 1.d4 (4 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 2 | 50.0% | 0.0% |
| e6 | 2 | 50.0% | 100.0% |
Siyuan Ou's chess games
All 32 games by Siyuan Ou in the Chess.ceo database (May 2023 - Oct 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: 7 wins, 3 draws, 22 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C53 | Italian Game: Classical Variation | 5 | 0/1/4 | 0.0% |
| C50 | Italian Game | 2 | 2/0/0 | 100.0% |
| B34 | Sicilian: Accelerated Dragon | 2 | 1/1/0 | 50.0% |
| C57 | Italian Game: Two Knights Defense | 2 | 0/0/2 | 0.0% |
| B41 | Sicilian | 1 | 0/0/1 | 0.0% |
| B03 | Alekhine Defense | 1 | 0/0/1 | 0.0% |
| B00 | St. George Defense | 1 | 0/0/1 | 0.0% |
| B13 | Caro-Kann: Exchange Variation | 1 | 1/0/0 | 100.0% |
| C02 | French: Advance Variation | 1 | 0/0/1 | 0.0% |
| B06 | Modern Defense | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D30 | Indian Defense | 2 | 1/0/1 | 50.0% |
| C01 | French: Exchange Variation | 2 | 1/1/0 | 50.0% |
| C02 | French: Advance Variation | 2 | 0/0/2 | 0.0% |
| B38 | Sicilian: Accelerated Dragon | 2 | 0/0/2 | 0.0% |
| D02 | London System | 1 | 0/0/1 | 0.0% |
| B30 | Sicilian | 1 | 0/0/1 | 0.0% |
| A40 | Horwitz Defense | 1 | 1/0/0 | 100.0% |
| D00 | Dunst Opening | 1 | 0/0/1 | 0.0% |
| A13 | English Opening: Neo-Catalan | 1 | 0/0/1 | 0.0% |
| E10 | Catalan | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2026 | Arav Ajaykumar | 1,824 | 2026 Delancey UKCC Challengers Under 18 | C50 |
| Jul 2026 | Larissa Cuthbert | 1,669 | Gilbert Cup 2026 | D30 |
| Mar 2026 | Diah Patel | 1,624 | English Youth Championships 2026 | B13 |
| Nov 2023 | Aidan Chivers | 1,550 | 10th Witney Open D | C01 |
| Jul 2026 | Zara Mehta | 1,517 | Gilbert Cup 2026 | A40 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| 2026 UK Chess Challenge Terafinal Under 18 | 2026 | 11 | 0 | 1,568 |
| British Rapidplay | 2024 | 6 | 2 | 1,733 |
| 2026 Delancey UKCC Challengers Under 18 | 2026 | 5 | 1 | 1,477 |
| Gilbert Cup 2026 | 2026 | 5 | 3.5 | 1,858 |
| English Youth Championships 2026 | 2026 | 3 | 1 | 1,620 |
| Glorney International 2026 | Gilbert International Cup | 2026 | 1 | 0 | 1,360 |
| 10th Witney Open D | 2023 | 1 | 1 | 1,950 |
Interactive opening tree from all 32 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Siyuan Ou's chess games?
32 games by Siyuan Ou, from May 2023 to Oct 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 Siyuan Ou has played.
What does Siyuan Ou play on the first move as White?
Across 17 games with White in our database, Siyuan Ou opens with 1.e4 (100% of games). Against 1.e4 as Black, Siyuan Ou answers 1...e6 (57% of games), 1...c5 (43% of games). Against 1.d4: 1...Nf6 (50% of games), 1...e6 (50% of games).
What openings does Siyuan Ou play as White?
As White, Siyuan Ou's most-played openings in our database are: Italian Game: Classical Variation (5 games, 0.0% win rate); Italian Game (2 games, 100.0% win rate); Sicilian: Accelerated Dragon (2 games, 50.0% win rate). The full breakdown of 18 games with White is in the table above.
What openings does Siyuan Ou play as Black?
As Black, Siyuan Ou most often plays: Indian Defense (2 games, 50.0% win rate); French: Exchange Variation (2 games, 50.0% win rate); French: Advance Variation (2 games, 0.0% win rate). See the table above for the top ten Black openings across 14 games.
What is Siyuan Ou's FIDE rating?
Siyuan Ou is currently rated 1,638 in classical chess, 1,510 in rapid and 1,607 in blitz. Peak classical rating: 1,638 (Oct 2026).
How many games has Siyuan Ou played?
Our database contains 32 games by Siyuan Ou, covering May 2023 to Oct 2026. Overall record: 7 wins, 3 draws, 22 losses (21.9% win rate).
How do I prepare against Siyuan Ou?
32 games by Siyuan Ou 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.