Prepare against Rion Okuno
Japan · World #21,485 classical · FIDE ID 7003730
Our database contains 34 games by Rion Okuno, covering Apr 2022 to Jul 2026. Below you'll find Rion Okuno's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Rion Okuno 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 | 2,045 | 2,125 | May 2025 |
| Rapid | 1,921 | 1,921 | Jul 2026 |
| Blitz | 2,003 | 2,003 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 34 | 10 | 9 | 15 | 29.4% |
| As White | 19 | 5 | 5 | 9 | 26.3% |
| As Black | 15 | 5 | 4 | 6 | 33.3% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Rion Okuno's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Rion Okuno's side.
First moves as White (19 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 19 | 100.0% | 39.5% |
Main lines as White
- 1.e4 — 100% of White games, 39.5% score
- …c5 (42% of these games) — Okuno usually continues Nf3 (50.0% score)
- …e5 (32% of these games) — Okuno usually continues Nf3 (33.3% score)
- …e6 (11% of these games) — Okuno usually continues d4 (0.0% score)
As Black against 1.e4 (11 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 11 | 100.0% | 40.9% |
As Black against 1.d4 (2 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 2 | 100.0% | 25.0% |
Rion Okuno's chess games
All 34 games by Rion Okuno in the Chess.ceo database (Apr 2022 - 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: 10 wins, 9 draws, 15 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B27 | Sicilian: Hyperaccelerated Dragon | 2 | 2/0/0 | 100.0% |
| C95 | Ruy Lopez: Closed | 2 | 1/0/1 | 50.0% |
| C70 | Ruy Lopez: Morphy Defense | 2 | 0/0/2 | 0.0% |
| B38 | Sicilian: Accelerated Dragon | 2 | 0/1/1 | 0.0% |
| C42 | Petrov's Defense | 1 | 0/1/0 | 0.0% |
| C41 | Philidor | 1 | 0/0/1 | 0.0% |
| C72 | Ruy Lopez: Steinitz Defense Deferred | 1 | 0/1/0 | 0.0% |
| B28 | Sicilian | 1 | 1/0/0 | 100.0% |
| B90 | Sicilian: Najdorf | 1 | 0/1/0 | 0.0% |
| B33 | Sicilian: Sveshnikov | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B90 | Sicilian: Najdorf | 10 | 2/3/5 | 20.0% |
| E06 | Catalan | 1 | 0/0/1 | 0.0% |
| A13 | English Opening: Neo-Catalan | 1 | 1/0/0 | 100.0% |
| A45 | Queen's Pawn Game: Chigorin Variation | 1 | 0/1/0 | 0.0% |
| A05 | Réti Opening | 1 | 1/0/0 | 100.0% |
| B51 | Sicilian: Moscow Variation | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jun 2025 | Sanket Chakravarty | 2,303 | 3rd Munich Whitsun Open A | A13 |
| Dec 2024 | Sjoerd Van Roon | 2,285 | 60th Groningen Open | B90 |
| Dec 2024 | Noah Ritzerveld | 2,182 | 60th Groningen Open | C97 |
| Jun 2025 | Marc Tarrago Plaza | 2,102 | 5th Llinars Int Open | B51 |
| Sep 2025 | Kota Nagataki | 2,037 | Japan Open | B96 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Japan Open | 2025 | 9 | 3.5 | 2,016 |
| 5th Llinars Int Open | 2025 | 9 | 5 | 2,113 |
| 60th Groningen Open | 2024 | 7 | 3 | 2,223 |
| 37th Pula Open | 2025 | 4 | 1.5 | 2,228 |
| 3rd Munich Whitsun Open A | 2025 | 2 | 1 | 2,346 |
| 44th Benasque Open | 2025 | 1 | 0 | 2,222 |
| 52nd Annual World Open | 2024 | 1 | 0 | 2,202 |
| ch-JPN | 2025 | 1 | 0.5 | 2,188 |
Interactive opening tree from all 34 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Rion Okuno's chess games?
34 games by Rion Okuno, from Apr 2022 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 Rion Okuno has played.
What does Rion Okuno play on the first move as White?
Across 19 games with White in our database, Rion Okuno opens with 1.e4 (100% of games). Against 1.e4 as Black, Rion Okuno answers 1...c5 (100% of games). Against 1.d4: 1...Nf6 (100% of games).
What openings does Rion Okuno play as White?
As White, Rion Okuno's most-played openings in our database are: Sicilian: Hyperaccelerated Dragon (2 games, 100.0% win rate); Ruy Lopez: Closed (2 games, 50.0% win rate); Ruy Lopez: Morphy Defense (2 games, 0.0% win rate). The full breakdown of 19 games with White is in the table above.
What openings does Rion Okuno play as Black?
As Black, Rion Okuno most often plays: Sicilian: Najdorf (10 games, 20.0% win rate); Catalan (1 games, 0.0% win rate); English Opening: Neo-Catalan (1 games, 100.0% win rate). See the table above for the top ten Black openings across 15 games.
What is Rion Okuno's FIDE rating?
Rion Okuno is currently rated 2,045 in classical chess, 1,921 in rapid and 2,003 in blitz. Peak classical rating: 2,125 (May 2025).
How many games has Rion Okuno played?
Our database contains 34 games by Rion Okuno, covering Apr 2022 to Jul 2026. Overall record: 10 wins, 9 draws, 15 losses (29.4% win rate).
How do I prepare against Rion Okuno?
34 games by Rion Okuno 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.