Kobayashi Koichi
Follow
1,562
Games
59%
Win rate
48
Titles
2–5
2026 Record
28.6%
Win Rate
7
Games
2L
Current Streak
As Black: 1/5 (20%)
As White: 1/2 (50%)
Key rivalries
Cho Chikun
70–72
Kato Masao
49–54
Rin Kaiho
49–32
Otake Hideo
49–24
Takemiya Masaki
36–32
Yoda Norimoto
22–22
Tournaments
Kisei #51
Out
2W–1L
3 games
2026-04-20
Final Tournament
Gosei #52
Out
0W–1L
1 game
2026-03-04
Preliminary
Honinbo #82
Out
0W–1L
1 game
2026-04-13
Preliminary C
Nongshim Baeksansoo Cup #4
Out
0W–1L
1 game
2026-02-05
Game 10
Teikei Cup #5
Out
0W–1L
1 game
2026-02-19
Round 2
Key Opponents in 2026
| Opponent | Games | Record | Split |
|---|---|---|---|
| Tsuneishi Takashi 🇯🇵 | 1 | 0–1 | |
| Obuchi Kotaro 🇯🇵 | 1 | 0–1 | |
| Yoshihara Yukari 🇯🇵 | 1 | 1–0 | |
| Chin Hakusho 🇯🇵 | 1 | 0–1 | |
| O Rissei 🇯🇵 | 1 | 0–1 | |
| Yu Ch'ang-hyeok 🇰🇷 | 1 | 0–1 | |
| Tahara Yasufumi 🇯🇵 | 1 | 1–0 |
Games
| Date | Opponent | Color | Result | Event | Round |
|---|---|---|---|---|---|
| 2026-04-20 | Tsuneishi Takashi | B | W+9.5 | Kisei | Final Tournament |
| 2026-04-13 | Obuchi Kotaro | B | W+R | Honinbo | Preliminary C |
| 2026-03-26 | Yoshihara Yukari | B | B+R | Kisei | Final Tournament |
| 2026-03-04 | Chin Hakusho | W | B+R | Gosei | Preliminary |
| 2026-02-19 | O Rissei | B | W+1.5 | Teikei Cup | Round 2 |
| 2026-02-05 | Yu Ch'ang-hyeok | B | W+12.5 | Nongshim Baeksansoo Cup | Game 10 |
| 2026-01-29 | Tahara Yasufumi | W | W+R | Kisei | Final Tournament |