Prepare against Minjun Koo
Canada · World #43,410 classical · FIDE ID 13209345
Our database contains 43 games by Minjun Koo, covering Nov 2018 to Aug 2026. Below you'll find Minjun Koo's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Minjun Koo 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 | 1,920 | 1,963 | Jul 2026 |
| Rapid | 1,616 | 1,616 | Aug 2026 |
| Blitz | 2,005 | 2,005 | Aug 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 43 | 12 | 13 | 18 | 27.9% |
| As White | 21 | 7 | 6 | 8 | 33.3% |
| As Black | 22 | 5 | 7 | 10 | 22.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Minjun Koo's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Minjun Koo's side.
First moves as White (21 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 9 | 42.9% | 44.4% |
| d4 | 6 | 28.6% | 58.3% |
| Nf3 | 4 | 19.0% | 62.5% |
| c4 | 2 | 9.5% | 0.0% |
Main lines as White
- 1.e4 — 43% of White games, 44.4% score
- …c5 (44% of these games) — Koo usually continues Nf3 (25.0% score)
- …e6 (22% of these games) — Koo usually continues d4 (25.0% score)
- …g6 (11% of these games) — Koo usually continues c4 (100.0% score)
- 1.d4 — 29% of White games, 58.3% score
- …d5 (33% of these games) — Koo usually continues c4 (100.0% score)
- …e6 (33% of these games) — Koo usually continues Nc3 (50.0% score)
- …Nf6 (33% of these games) — Koo usually continues Nc3 (25.0% score)
As Black against 1.e4 (11 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 9 | 81.8% | 33.3% |
| c6 | 2 | 18.2% | 50.0% |
As Black against 1.d4 (5 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 5 | 100.0% | 60.0% |
Minjun Koo's chess games
All 43 games by Minjun Koo in the Chess.ceo database (Nov 2018 - Aug 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: 12 wins, 13 draws, 18 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D00 | Queen's Pawn Game: Chigorin Variation | 4 | 2/0/2 | 50.0% |
| B35 | Sicilian | 3 | 0/2/1 | 0.0% |
| A50 | Indian Defense | 2 | 1/0/1 | 50.0% |
| A05 | Réti Opening: Symmetrical Defense | 2 | 0/1/1 | 0.0% |
| B45 | French Defense | 1 | 0/0/1 | 0.0% |
| C09 | French: Tarrasch Variation | 1 | 0/1/0 | 0.0% |
| B07 | Pirc Defense | 1 | 0/1/0 | 0.0% |
| D00 | Queen's Pawn Game | 1 | 0/1/0 | 0.0% |
| A07 | Réti Opening | 1 | 1/0/0 | 100.0% |
| B15 | Caro-Kann: Main Line | 1 | 1/0/0 | 100.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B22 | Sicilian: Alapin | 2 | 1/0/1 | 50.0% |
| B23 | Sicilian: Closed | 2 | 0/1/1 | 0.0% |
| D02 | Catalan | 2 | 2/0/0 | 100.0% |
| A38 | English Opening | 2 | 0/2/0 | 0.0% |
| B28 | Sicilian | 2 | 0/1/1 | 0.0% |
| D31 | Queen's Gambit Declined | 1 | 0/1/0 | 0.0% |
| B13 | Queen's Pawn Game: Chigorin Variation | 1 | 0/0/1 | 0.0% |
| A05 | Réti Opening | 1 | 0/0/1 | 0.0% |
| B21 | Sicilian: Grand Prix Attack | 1 | 0/0/1 | 0.0% |
| B31 | Sicilian: Rossolimo | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Apr 2026 | Deshpande,Sarthak | 2,013 | Canadian Closed 2026 | D30 |
| Apr 2026 | Mark Klusa | 1,982 | Canadian Closed 2026 | A14 |
| Jul 2024 | David Filipovich | 1,950 | Canadian Open | A26 |
| Apr 2026 | Ting En Ryan Wu | 1,906 | Canadian Closed 2026 | A07 |
| Jul 2024 | Ron Offengenden | 1,894 | Canadian Open | D36 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Canadian Open | 2024 | 18 | 8 | 1,760 |
| Wch U12 | 2022 | 10 | 5 | 1,681 |
| Canadian Closed 2026 | 2026 | 9 | 4.5 | 1,993 |
| New Westminster BC Day | 2024 | 4 | 1 | 1,796 |
| 30th Pardubice Czech Open D | 2019 | 1 | 0 | 1,287 |
| DC International 2026 | 2026 | 1 | 0 | 1,866 |
Interactive opening tree from all 43 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Minjun Koo's chess games?
43 games by Minjun Koo, from Nov 2018 to Aug 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 Minjun Koo has played.
What does Minjun Koo play on the first move as White?
Across 21 games with White in our database, Minjun Koo opens with 1.e4 (43% of games), 1.d4 (29% of games), 1.Nf3 (19% of games). Against 1.e4 as Black, Minjun Koo answers 1...c5 (82% of games), 1...c6 (18% of games). Against 1.d4: 1...d5 (100% of games).
What openings does Minjun Koo play as White?
As White, Minjun Koo's most-played openings in our database are: Queen's Pawn Game: Chigorin Variation (4 games, 50.0% win rate); Sicilian (3 games, 0.0% win rate); Indian Defense (2 games, 50.0% win rate). The full breakdown of 21 games with White is in the table above.
What openings does Minjun Koo play as Black?
As Black, Minjun Koo most often plays: Sicilian: Alapin (2 games, 50.0% win rate); Sicilian: Closed (2 games, 0.0% win rate); Catalan (2 games, 100.0% win rate). See the table above for the top ten Black openings across 22 games.
What is Minjun Koo's FIDE rating?
Minjun Koo is currently rated 1,920 in classical chess, 1,616 in rapid and 2,005 in blitz. Peak classical rating: 1,963 (Jul 2026).
How many games has Minjun Koo played?
Our database contains 43 games by Minjun Koo, covering Nov 2018 to Aug 2026. Overall record: 12 wins, 13 draws, 18 losses (27.9% win rate).
How do I prepare against Minjun Koo?
43 games by Minjun Koo 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.