Cho Sonjin
Cho Sonjin (趙善津) has a rating of 1673, ranked 151 of 452 in professional play. Their highest rating so far is 2010 (April 2, 2015).
Cho Sonjin9 dan趙善津Nihon Ki-in Tokyo
Rating1673
Rank151
1-year change↓28
Peak rating2010
Last 10LossLossWinLossLossWinLossWinLossWin604-440
- 2026 record
- 4-5
- Record since 1927
- 604-440
- Win rate
- .579
The rating is calculated from published game results. It does not include any adjustment for playing Black.
Professional ratingsFind a player
Rating history — professional
The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| September 17, 2026 | Chang Ruei JieOza Preliminary B as Black | Win | ↑20 |
| July 13, 2026 | Aoki HirotakaTengen Colors unknown | Loss | ↓16 |
| May 28, 2026 | Kobayashi SatoruTengen Colors unknown | Win | ↑17 |
| May 11, 2026 | Jo BunenJudan Colors unknown | Loss | ↓18 |
| April 27, 2026 | Chang Ruei JieTengen Colors unknown | Win | ↑23 |
| April 20, 2026 | Kobayashi IzumiGosei Colors unknown | Loss | ↓20 |
| March 19, 2026 | Kikuchi MasatoshiHoninbo Colors unknown | Loss | ↓29 |
| February 26, 2026 | Goto ManaGosei Colors unknown | Win | ↑3 |
| January 15, 2026 | Tanaka YukiKisei First Tournament Preliminary Round 1 Colors unknown | Loss | ↓9 |
| November 13, 2025 | So YokokuMeijin Colors unknown | Loss | ↓10 |
| October 30, 2025 | Xiao YuyangOza Colors unknown | Loss | ↓5 |
| October 6, 2025 | Kobayashi KoichiOza Preliminary B Final as Black | Win | ↑16 |
| September 11, 2025 | Kibe NatsukiTengen Colors unknown | Loss | ↓20 |
| July 24, 2025 | Terayama ReiJudan Colors unknown | Loss | ↓11 |
| July 14, 2025 | Kibe NatsukiRyusei Colors unknown | Loss | ↓23 |
| June 19, 2025 | Kondo ToshikiHoninbo Colors unknown | Loss | ↓21 |
| June 2, 2025 | Sato MasaharuJudan Colors unknown | Win | ↑7 |
| May 19, 2025 | Ogaki YusakuMeijin Colors unknown | Loss | ↓16 |
| April 21, 2025 | Kanda EiMeijin Colors unknown | Win | ↑5 |
| March 24, 2025 | Kyo KagenAgon Kiriyama Cup Colors unknown | Loss | ↓2 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| O Meien | 18-16.529 | 6-9 | 9-6 |
| O Rissei | 18-9.667 | 10-3 | 6-5 |
| Cho Chikun | 10-14.417 | 7-3 | 3-9 |
| Ryu Shikun | 9-13.409 | 5-4 | 4-9 |
| Hane Naoki | 8-13.381 | 3-6 | 4-4 |
| Yoda Norimoto | 5-15.250 | 2-8 | 1-6 |
| Cho U | 5-15.250 | 3-6 | 2-7 |
| Takao Shinji | 7-12.368 | 1-4 | 5-6 |
| Komatsu Hideki | 8-10.444 | 3-3 | 3-4 |
| Yamada Kimio | 11-6.647 | 6-1 | 4-5 |
| Yuki Satoshi | 4-13.235 | 2-5 | 1-6 |
| Kobayashi Satoru | 8-8.500 | 5-3 | 2-4 |
| Mimura Tomoyasu | 7-8.467 | 1-5 | 4-3 |
| Yamashita Keigo | 6-8.429 | 2-7 | 4-1 |
| Tsuruyama Atsushi | 4-8.333 | 1-2 | 2-3 |
| Rin Kaiho | 7-5.583 | 2-2 | 4-2 |
| Hikosaka Naoto | 6-6.500 | 5-3 | 1-3 |
| Han Zenki | 8-3.727 | 3-2 | 2-0 |
| Imamura Toshiya | 7-3.700 | 2-3 | 5-0 |
| Anzai Nobuaki | 4-6.400 | 1-3 | 2-2 |
| Yo Kagen | 10-01.000 | 2-0 | 4-0 |
| Oya Koichi | 9-1.900 | 3-0 | 3-1 |
| Kono Rin | 1-9.100 | 0-3 | 1-4 |
| Kato Masao | 2-7.222 | 2-2 | 0-5 |
| Morita Michihiro | 4-5.444 | 0-3 | 2-0 |
| Kobayashi Koichi | 2-7.222 | 2-2 | 0-4 |
| Miyazawa Goro | 8-1.889 | 2-0 | 3-1 |
| Otake Hideo | 9-01.000 | 5-0 | 3-0 |
| Rin Shien | 4-4.500 | 2-2 | 0-0 |
| Akiyama Jiro | 3-5.375 | 2-4 | 0-1 |
| Takemiya Masaki | 4-4.500 | 0-2 | 3-1 |
| Awaji Shuzo | 7-1.875 | 3-1 | 2-0 |
| So Yokoku | 4-4.500 | 0-1 | 4-2 |
| Matsumoto Takehisa | 7-1.875 | 4-0 | 0-0 |
| Iyama Yuta | 1-7.125 | 0-2 | 1-3 |
| Nakano Hironari | 4-3.571 | 3-1 | 0-1 |
| Shuto Shun | 4-3.571 | 1-0 | 1-2 |
| Ogaki Yusaku | 4-3.571 | 2-1 | 1-0 |
| Cho Riyu | 5-2.714 | 1-2 | 2-0 |
| Kato Atsushi | 6-1.857 | 2-0 | 4-1 |
| Kataoka Satoshi | 2-5.286 | 1-0 | 1-4 |
| Ishida Yoshio | 2-4.333 | 1-2 | 1-2 |
| Sakai Hideyuki | 5-1.833 | 1-0 | 3-1 |
| Mizokami Tomochika | 1-5.167 | 0-1 | 0-2 |
| Kamimura Haruo | 5-1.833 | 1-1 | 1-0 |
| Mitani Tetsuya | 6-01.000 | 4-0 | 0-0 |
| Suzuki Shinji | 3-3.500 | 0-2 | 1-0 |
| Michael Redmond | 6-01.000 | 3-0 | 3-0 |
| Yo Kaei | 4-1.800 | 0-0 | 3-1 |
| Yu Zhengqi | 3-2.600 | 1-1 | 1-1 |
| Aoki Shinichi | 3-2.600 | 2-1 | 1-1 |
| Shiraishi Yuichi | 5-01.000 | 0-0 | 3-0 |
| Yamashiro Hiroshi | 4-1.800 | 2-1 | 1-0 |
| Yamada Takuji | 2-3.400 | 0-0 | 1-1 |
| Imamura Yoshiaki | 4-1.800 | 3-1 | 1-0 |
| Ko Iso | 1-4.200 | 0-0 | 1-3 |
| Takanashi Seiken | 5-01.000 | 2-0 | 1-0 |
| Kono Takashi | 5-01.000 | 2-0 | 1-0 |
| Kanda Ei | 4-1.800 | 1-1 | 0-0 |
| Kobayashi Izumi | 2-3.400 | 0-0 | 0-1 |
| Rin Kanketsu | 3-2.600 | 1-0 | 1-1 |
| Nakamura Shinya | 2-3.400 | 1-0 | 1-3 |
| Kim Sujun | 0-5.000 | 0-3 | 0-2 |
Record by year
Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.
| Year | Record | Win rate |
|---|---|---|
| 2026 | 4-5 | .444 |
| 2025 | 7-10 | .412 |
| 2024 | 13-10 | .565 |
| 2023 | 12-9 | .571 |
| 2022 | 10-9 | .526 |
| 2021 | 11-10 | .524 |
| 2020 | 12-8 | .600 |
| 2019 | 17-10 | .630 |
| 2018 | 17-13 | .567 |
| 2017 | 22-14 | .611 |
| 2016 | 22-14 | .611 |
| 2015 | 28-15 | .651 |
| 2014 | 20-11 | .645 |
| 2013 | 21-11 | .656 |
| 2012 | 30-14 | .682 |
| 2011 | 22-16 | .579 |
| 2010 | 14-12 | .538 |
| 2009 | 24-9 | .727 |
| 2008 | 20-16 | .556 |
| 2007 | 15-19 | .441 |
| 2006 | 27-16 | .628 |
| 2005 | 26-24 | .520 |
| 2004 | 28-14 | .667 |
| 2003 | 24-17 | .585 |
| 2002 | 23-26 | .469 |
| 2001 | 20-21 | .488 |
| 2000 | 19-14 | .576 |
| 1999 | 13-12 | .520 |
| 1998 | 8-9 | .471 |
| 1997 | 3-11 | .214 |
| 1996 | 8-3 | .727 |
| 1995 | 6-5 | .545 |
| 1994 | 1-1 | .500 |
| 1993 | 6-5 | .545 |
| 1992 | 12-7 | .632 |
| 1991 | 12-7 | .632 |
| 1990 | 14-4 | .778 |
| 1989 | 5-3 | .625 |
| 1988 | 1-4 | .200 |
| 1987 | 6-2 | .750 |
| 1986 | 1-0 | 1.000 |
| Total | 604-440 | .579 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).