Prepare against Shou Otsuka
FM · Japan · World #3,666 classical · FIDE ID 7004702
When preparing against Shou Otsuka, expect 1.e4 in 83% of White games. Against 1.e4 the reply is 1...e5 (48% of games); against 1.d4, 1...Nf6 (81%). Lowest win rate among frequent openings: Sicilian: Moscow Variation as White, 66.7% over 15 games.
Our database contains 275 games by Shou Otsuka, covering Dec 2021 to Sep 2026. Below you'll find Shou Otsuka's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Shou Otsuka 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 | 2,314 | 2,362 | Jul 2025 |
| Rapid | 2,106 | 2,158 | Feb 2023 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 275 | 87 | 76 | 112 | 31.6% |
| As White | 142 | 55 | 40 | 47 | 38.7% |
| As Black | 133 | 32 | 36 | 65 | 24.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Shou Otsuka's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Shou Otsuka's side.
First moves as White (142 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 118 | 83.1% | 54.2% |
| Nf3 | 16 | 11.3% | 43.8% |
| c4 | 6 | 4.2% | 50.0% |
| d4 | 2 | 1.4% | 50.0% |
Main lines as White
- 1.e4 — 83% of White games, 54.2% score
- …c5 (49% of these games) — Otsuka usually continues Nf3 (51.1% score)
- …e5 (23% of these games) — Otsuka usually continues Nf3 (44.4% score)
- …c6 (12% of these games) — Otsuka usually continues d4 (66.7% score)
- 1.Nf3 — 11% of White games, 43.8% score
- …Nf6 (38% of these games) — Otsuka usually continues g3 (66.7% score)
- …d5 (25% of these games) — Otsuka usually continues b3 (50.0% score)
- …d6 (13% of these games) — Otsuka usually continues c4 (100.0% score)
As Black against 1.e4 (62 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 30 | 48.4% | 30.0% |
| e6 | 13 | 21.0% | 42.3% |
| c5 | 10 | 16.1% | 25.0% |
| d6 | 9 | 14.5% | 44.4% |
As Black against 1.d4 (42 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 34 | 81.0% | 32.4% |
| d5 | 5 | 11.9% | 10.0% |
| d6 | 2 | 4.8% | 50.0% |
| e6 | 1 | 2.4% | 100.0% |
Shou Otsuka's chess games
All 275 games by Shou Otsuka in the Chess.ceo database (Dec 2021 - Sep 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: 87 wins, 76 draws, 112 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B51 | Sicilian: Moscow Variation | 15 | 10/2/3 | 66.7% |
| B40 | Sicilian | 12 | 3/5/4 | 25.0% |
| B30 | Sicilian: Rossolimo | 12 | 2/6/4 | 16.7% |
| B22 | Sicilian: Alapin | 10 | 4/3/3 | 40.0% |
| B13 | Caro-Kann: Exchange Variation | 10 | 6/2/2 | 60.0% |
| A05 | Réti Opening | 8 | 2/1/5 | 25.0% |
| C55 | Italian Game | 7 | 3/3/1 | 42.9% |
| C01 | French: Exchange Variation | 5 | 1/1/3 | 20.0% |
| C67 | Ruy Lopez: Berlin Defense | 4 | 1/2/1 | 25.0% |
| B23 | Sicilian: Closed | 4 | 3/1/0 | 75.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C41 | Philidor | 10 | 5/0/5 | 50.0% |
| C78 | Ruy Lopez: Morphy Defense | 9 | 1/2/6 | 11.1% |
| C50 | Italian Game | 9 | 2/3/4 | 22.2% |
| A46 | Indian Defense | 9 | 3/1/5 | 33.3% |
| A62 | Catalan | 8 | 3/0/5 | 37.5% |
| A06 | Réti Opening | 7 | 0/6/1 | 0.0% |
| D38 | Queen's Gambit Declined: Ragozin Defense | 7 | 0/5/2 | 0.0% |
| C11 | French: Classical Variation | 7 | 2/2/3 | 28.6% |
| A35 | English Opening | 5 | 5/0/0 | 100.0% |
| A45 | London System | 4 | 0/0/4 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Feb 2026 | Daniel Dardha | 2,602 | 3rd Kumania GM 2026 | A35 |
| Aug 2025 | Jan Malek | 2,526 | Fujairah Global Masters | B51 |
| Jan 2025 | Marius Deuer | 2,505 | 23rd Marienbad A1 GM | B13 |
| Feb 2026 | Jonah B Willow | 2,468 | 3rd Kumania GM 2026 | E62 |
| Mar 2024 | Mihajlo Radovanovic | 2,464 | 61st Doeberl Cup | D37 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2025 | 23 | 8.5 | 2,111 |
| ch-JPN | 2025 | 13 | 7.5 | 2,196 |
| 58th Biel Master Open | 2025 | 10 | 6 | 2,317 |
| 3rd Kumania GM 2026 | 2026 | 9 | 4 | 2,423 |
| Budapest SixDays 05 IM | 2024 | 9 | 6 | 2,401 |
| FSGM February | 2026 | 9 | 3.5 | 2,331 |
| Melbourne Open | 2024 | 9 | 5 | 2,285 |
| FSIM October 2024 | 2024 | 9 | 4 | 2,212 |
Interactive opening tree from all 275 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Shou Otsuka's chess games?
275 games by Shou Otsuka, from Dec 2021 to Sep 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 Shou Otsuka has played.
What does Shou Otsuka play on the first move as White?
Across 142 games with White in our database, Shou Otsuka opens with 1.e4 (83% of games), 1.Nf3 (11% of games), 1.c4 (4% of games). Against 1.e4 as Black, Shou Otsuka answers 1...e5 (48% of games), 1...e6 (21% of games), 1...c5 (16% of games). Against 1.d4: 1...Nf6 (81% of games), 1...d5 (12% of games), 1...d6 (5% of games).
What openings does Shou Otsuka play as White?
As White, Shou Otsuka's most-played openings in our database are: Sicilian: Moscow Variation (15 games, 66.7% win rate); Sicilian (12 games, 25.0% win rate); Sicilian: Rossolimo (12 games, 16.7% win rate). The full breakdown of 142 games with White is in the table above.
What openings does Shou Otsuka play as Black?
As Black, Shou Otsuka most often plays: Philidor (10 games, 50.0% win rate); Ruy Lopez: Morphy Defense (9 games, 11.1% win rate); Italian Game (9 games, 22.2% win rate). See the table above for the top ten Black openings across 133 games.
What is Shou Otsuka's FIDE rating?
Shou Otsuka is currently rated 2,314 in classical chess, 2,106 in rapid. Peak classical rating: 2,362 (Jul 2025).
How many games has Shou Otsuka played?
Our database contains 275 games by Shou Otsuka, covering Dec 2021 to Sep 2026. Overall record: 87 wins, 76 draws, 112 losses (31.6% win rate).
How do I prepare against Shou Otsuka?
275 games by Shou Otsuka 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.