Yi Ch'ang-seok
Follow
310
Games
49%
Win rate
1
Titles
7–16
2025 Record
30.4%
Win Rate
23
Games
3W
Best Streak
As Black: 4/11 (36%)
As White: 3/12 (25%)
Key rivalries
Park Junghwan
3–11
Shin Minjun
2–9
Byun Sangil
4–7
Kim Myeong-hun
5–5
Kang Dongyun
3–5
Song Chi-hun
2–6
Tournaments
Korean Baduk League
7W–11L
18 games
2025-12-18
League · Round 7 · Round 6
2025 Super Cup Open
0W–1L
1 game
2025-10-06
Round 3
Kuksu Mountains International Baduk Championship
Out
0W–1L
1 game
2025-07-24
Korean qualifier
Maxim Cup #26
Out
0W–1L
1 game
2025-01-27
Round 1
Shinhan Bank World Baduk Immortal
0W–1L
1 game
2025-12-24
Round 1
World Go Immortal Championship
0W–1L
1 game
2025-01-02
Korean qualifier
Key Opponents in 2025
| Opponent | Games | Record | Split |
|---|---|---|---|
| Kim Cheong-hyeon Sr. 🇰🇷 | 3 | 0–3 | |
| Park Junghwan 🇰🇷 | 3 | 1–2 | |
| Song Chi-hun 🇰🇷 | 2 | 0–2 | |
| Pak Sang-chin 🇰🇷 | 2 | 1–1 | |
| Kim Myeong-hun 🇰🇷 | 2 | 0–2 | |
| Kim Chin-hwi 🇰🇷 | 2 | 0–2 | |
| Ding Hao 🇨🇳 | 1 | 0–1 | |
| An Sungjoon 🇰🇷 | 1 | 1–0 | |
| Ch'oe Kwang-ho 🇰🇷 | 1 | 1–0 | |
| Hong Seong-chi 🇰🇷 | 1 | 1–0 |
Games
| Date | Opponent | Color | Result | Event | Round |
|---|---|---|---|---|---|
| 2025-12-24 | Ding Hao | W | B+0.5 | Shinhan Bank World Baduk Immortal | Round 1 |
| 2025-12-18 | Song Chi-hun | W | B+R | Korean Baduk League | League |
| 2025-12-13 | Pak Sang-chin | W | B+R | Korean Baduk League | League |
| 2025-12-06 | Kim Cheong-hyeon Sr. | B | W+2.5 | Korean Baduk League | League |
| 2025-11-22 | Park Junghwan | B | W+R | Korean Baduk League | League |
| 2025-11-06 | An Sungjoon | B | B+7.5 | Korean Baduk League | League |
| 2025-10-30 | Ch'oe Kwang-ho | W | W+R | Korean Baduk League | League |
| 2025-10-30 | Hong Seong-chi | B | B+0.5 | Korean Baduk League | League |
| 2025-10-26 | Dang Yifei | W | B+R | Korean Baduk League | League |
| 2025-10-06 | Kim Cheong-hyeon Sr. | B | W+R | 2025 Super Cup Open | Round 3 |
| 2025-07-24 | Kim Myeong-hun | B | W+R | Kuksu Mountains International Baduk Championship | Korean qualifier |
| 2025-04-03 | Park Junghwan | B | B+10.5 | Korean Baduk League | Round 7 |
| 2025-03-21 | Song Chi-hun | W | B+R | Korean Baduk League | Round 6 |
| 2025-03-14 | Kim Cheong-hyeon Sr. | B | W+R | Korean Baduk League | |
| 2025-03-07 | Kim Chin-hwi | W | B+R | Korean Baduk League | |
| 2025-03-01 | Pak Ha-min | W | B+R | Korean Baduk League | |
| 2025-02-23 | Sim Chae-ui | W | B+R | Korean Baduk League | |
| 2025-02-13 | Han Seung-chu | W | W+R | Korean Baduk League | |
| 2025-01-27 | Kim Myeong-hun | B | W+R | Maxim Cup | Round 1 |
| 2025-01-18 | Pak Min-kyu | W | W+R | Korean Baduk League | |
| 2025-01-11 | Pak Sang-chin | B | B+R | Korean Baduk League | |
| 2025-01-04 | Kim Chin-hwi | W | B+R | Korean Baduk League | |
| 2025-01-02 | Park Junghwan | B | W+R | World Go Immortal Championship | Korean qualifier |