Kobayashi Izumi
Follow
303
Games
51%
Win rate
14
Titles
9–9
2026 Record
50.0%
Win Rate
18
Games
1L
Current Streak
As Black: 4/4 (100%)
As White: 5/14 (36%)
Best this year: 4W
Key rivalries
Chinen Kaori
9–14
Aoki Kikuyo
9–7
Inori Yoko
9–3
Yashiro Kumiko
5–5
Umezawa Yukari
5–4
Kato Keiko
5–4
Tournaments
Teikei Cup #5
Champion
4W–1L
5 games
2026-05-23
Final · Semifinal · Round 2 · Round 1
Japan Women's Go League #2
Active
2W–1L
3 games
2026-07-17
League · Round 2
Fumakilla Women's Brains Match #6
Out
0W–2L
2 games
2026-04-29
Round of 16 · Main Draw Round 1
Gosei #52
Out
1W–1L
2 games
2026-07-23
Preliminary · Preliminary B
Women's Honinbo #45
Out
0W–2L
2 games
2026-03-15
Preliminary
Kisei #51
Out
0W–1L
1 game
2026-03-30
Final Tournament
Oza #75
Active
1W–0L
1 game
2026-07-30
Preliminary B
SGW Cup Chuyo #9
Out
0W–1L
1 game
2026-08-10
Preliminary
Teikei Female Legends Cup
Champion
1W–0L
1 game
2026-01-10
Key Opponents in 2026
| Opponent | Games | Record | Split |
|---|---|---|---|
| Cho Chikun 🇯🇵 | 2 | 0–2 | |
| Nyu Eiko 🇯🇵 | 2 | 0–2 | |
| Yashiro Kumiko 🇯🇵 | 2 | 0–2 | |
| Koyama Terumi 🇯🇵 | 2 | 2–0 | |
| Sugimoto Akira 🇯🇵 | 1 | 0–1 | |
| Takekiyo Isamu 🇯🇵 | 1 | 1–0 | |
| Hoshiai Shiho 🇯🇵 | 1 | 1–0 | |
| Fujisawa Rina 🇯🇵 | 1 | 0–1 | |
| Awaji Shuzo 🇯🇵 | 1 | 1–0 | |
| Kubo Katsuaki 🇯🇵 | 1 | 1–0 |
Games
| Date | Opponent | Color | Result | Event | Round |
|---|---|---|---|---|---|
| 2026-08-10 | Sugimoto Akira | W | B+R | SGW Cup Chuyo | Preliminary |
| 2026-07-30 | Takekiyo Isamu | B | B+2.5 | Oza | Preliminary B |
| 2026-07-23 | Cho Chikun | W | B+R | Gosei | Preliminary |
| 2026-07-17 | Hoshiai Shiho | B | B+R | Japan Women's Go League | League |
| 2026-05-29 | Fujisawa Rina | W | B+R | Japan Women's Go League | League |
| 2026-05-25 | Awaji Shuzo | B | B+R | Gosei | Preliminary B |
| 2026-05-23 | Cho Chikun | W | B+R | Teikei Cup | Final |
| 2026-05-14 | Kubo Katsuaki | W | W+R | Teikei Cup | Semifinal |
| 2026-04-29 | Nyu Eiko | W | B+4.5 | Fumakilla Women's Brains Match | Round of 16 |
| 2026-04-29 | Nyu Eiko | W | B+4.5 | Fumakilla Women's Brains Match | Main Draw Round 1 |
| 2026-04-13 | Kobayashi Satoru | W | W+14.5 | Teikei Cup | Round 2 |
| 2026-03-30 | Ando Kazushige | W | B+R | Kisei | Final Tournament |
| 2026-03-15 | Yashiro Kumiko | W | B+R | Women's Honinbo | Preliminary |
| 2026-03-09 | Yashiro Kumiko | W | B+R | Women's Honinbo | Preliminary |
| 2026-02-13 | Kibe Natsuki | W | W+R | Japan Women's Go League | Round 2 |
| 2026-01-26 | Hane Yasumasa | B | B+5.5 | Teikei Cup | Round 1 |
| 2026-01-10 | Koyama Terumi | W | W+1.5 | Teikei Female Legends Cup | |
| 2026-01-10 | Koyama Terumi | W | W+1.5 | Teikei Cup | Final |