Prepare against Hongjin Ahn
IM · South Korea · World #3,285 classical · FIDE ID 13201492
When preparing against Hongjin Ahn, expect 1.e4 in 48% of White games. Against 1.e4 the reply is 1...c5 (79% of games); against 1.d4, 1...Nf6 (39%). Lowest win rate among frequent openings: English Opening as White, 23.5% over 17 games.
Our database contains 463 games by Hongjin Ahn, covering Mar 2011 to Sep 2026. Below you'll find Hongjin Ahn's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Hongjin Ahn 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 | 2,328 | 2,336 | Jun 2026 |
| Rapid | 2,150 | 2,182 | Jun 2023 |
| Blitz | 2,182 | 2,182 | Sep 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 463 | 201 | 34 | 228 | 43.4% |
| As White | 225 | 100 | 14 | 111 | 44.4% |
| As Black | 238 | 101 | 20 | 117 | 42.4% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Hongjin Ahn's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Hongjin Ahn's side.
First moves as White (225 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 108 | 48.0% | 47.2% |
| c4 | 52 | 23.1% | 32.7% |
| d4 | 39 | 17.3% | 64.1% |
| Nf3 | 18 | 8.0% | 44.4% |
| b3 | 3 | 1.3% | 100.0% |
| b4 | 2 | 0.9% | 50.0% |
Main lines as White
- 1.e4 — 48% of White games, 47.2% score
- …c5 (40% of these games) — Ahn usually continues Nf3 (55.6% score)
- …e5 (21% of these games) — Ahn usually continues Nf3 (42.9% score)
- …c6 (14% of these games) — Ahn usually continues d4 (61.5% score)
- 1.c4 — 23% of White games, 32.7% score
- …Nf6 (29% of these games) — Ahn usually continues Nc3 (50.0% score)
- …e5 (19% of these games) — Ahn usually continues Nc3 (33.3% score)
- …g6 (17% of these games) — Ahn usually continues Nc3 (33.3% score)
As Black against 1.e4 (112 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 88 | 78.6% | 46.6% |
| e6 | 11 | 9.8% | 36.4% |
| d5 | 3 | 2.7% | 50.0% |
| d6 | 3 | 2.7% | 50.0% |
| Nc6 | 2 | 1.8% | 0.0% |
| c6 | 2 | 1.8% | 50.0% |
As Black against 1.d4 (89 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 35 | 39.3% | 57.1% |
| d5 | 21 | 23.6% | 19.0% |
| d6 | 18 | 20.2% | 47.2% |
| c5 | 8 | 9.0% | 81.3% |
| e6 | 3 | 3.4% | 33.3% |
| g6 | 2 | 2.2% | 100.0% |
Hongjin Ahn's chess games
All 463 games by Hongjin Ahn in the Chess.ceo database (Mar 2011 - 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: 201 wins, 34 draws, 228 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B21 | Sicilian | 25 | 12/2/11 | 48.0% |
| A10 | English Opening | 17 | 4/1/12 | 23.5% |
| A41 | Modern Defense | 14 | 5/1/8 | 35.7% |
| A28 | English Opening: Reverse Sicilian | 12 | 2/1/9 | 16.7% |
| A30 | Indian Defense | 9 | 4/2/3 | 44.4% |
| A09 | Réti Opening | 8 | 3/0/5 | 37.5% |
| B13 | Caro-Kann: Exchange Variation | 8 | 5/0/3 | 62.5% |
| A35 | English Opening: Symmetrical | 7 | 3/1/3 | 42.9% |
| C55 | Italian Game | 6 | 2/0/4 | 33.3% |
| C01 | French: Exchange Variation | 6 | 2/0/4 | 33.3% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B29 | Sicilian | 50 | 22/1/27 | 44.0% |
| A41 | Indian Defense | 19 | 12/0/7 | 63.2% |
| D31 | Queen's Gambit Declined | 12 | 1/2/9 | 8.3% |
| B23 | Sicilian: Closed | 11 | 5/3/3 | 45.5% |
| A43 | Benoni Defense | 10 | 8/1/1 | 80.0% |
| E05 | Catalan | 10 | 3/2/5 | 30.0% |
| B07 | Pirc Defense | 10 | 3/1/6 | 30.0% |
| B94 | Sicilian: Najdorf | 8 | 4/0/4 | 50.0% |
| A41 | Queen's Pawn Game | 7 | 6/0/1 | 85.7% |
| A13 | English Opening | 7 | 3/1/3 | 42.9% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Feb 2021 | Leandro Krysa | 2,544 | Titled Tue | B92 |
| Sep 2022 | Stelios Halkias | 2,506 | Titled Tue Early | E71 |
| Mar 2022 | Rodrigo Rafael Vasquez Schroder | 2,495 | Titled Tue Early | C11 |
| Nov 2022 | Polina Shuvalova | 2,492 | Titled Tue Early | D02 |
| Mar 2023 | Tomas Kraus | 2,486 | Titled Tue Early | C01 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2025 | 319 | 137 | 2,216 |
| Speed Chess Q1 | 2022 | 13 | 5 | 2,174 |
| Wch U14 | 2013 | 11 | 6 | 2,002 |
| Olympiad-45 | 2024 | 10 | 6.5 | 2,460 |
| World ol U16 | 2015 | 9 | 7.5 | 2,069 |
| ch-Asia Eastern U20 | 2018 | 9 | 7.5 | 2,307 |
| Asian Games | 2023 | 9 | 3.5 | 2,197 |
| Olympiad-44 | 2022 | 9 | 4 | 2,251 |
Interactive opening tree from all 463 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Hongjin Ahn's chess games?
463 games by Hongjin Ahn, from Mar 2011 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 Hongjin Ahn has played.
What does Hongjin Ahn play on the first move as White?
Across 225 games with White in our database, Hongjin Ahn opens with 1.e4 (48% of games), 1.c4 (23% of games), 1.d4 (17% of games). Against 1.e4 as Black, Hongjin Ahn answers 1...c5 (79% of games), 1...e6 (10% of games), 1...d5 (3% of games). Against 1.d4: 1...Nf6 (39% of games), 1...d5 (24% of games), 1...d6 (20% of games).
What openings does Hongjin Ahn play as White?
As White, Hongjin Ahn's most-played openings in our database are: Sicilian (25 games, 48.0% win rate); English Opening (17 games, 23.5% win rate); Modern Defense (14 games, 35.7% win rate). The full breakdown of 225 games with White is in the table above.
What openings does Hongjin Ahn play as Black?
As Black, Hongjin Ahn most often plays: Sicilian (50 games, 44.0% win rate); Indian Defense (19 games, 63.2% win rate); Queen's Gambit Declined (12 games, 8.3% win rate). See the table above for the top ten Black openings across 238 games.
What is Hongjin Ahn's FIDE rating?
Hongjin Ahn is currently rated 2,328 in classical chess, 2,150 in rapid and 2,182 in blitz. Peak classical rating: 2,336 (Jun 2026).
How many games has Hongjin Ahn played?
Our database contains 463 games by Hongjin Ahn, covering Mar 2011 to Sep 2026. Overall record: 201 wins, 34 draws, 228 losses (43.4% win rate).
How do I prepare against Hongjin Ahn?
463 games by Hongjin Ahn 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.