Go Player Ratings

JAAbout ratings

Cho Chikun

Cho Chikun (趙治勲) has a rating of 1855, ranked 56 of 452 in professional play. Their highest rating so far is 2078 (December 6, 2007).

Cho Chikun9 dan趙治勲Nihon Ki-in TokyoAlso known as: 二十五世本因坊治勲
Rating1855
Rank56
1-year change↓28
Peak rating2078
Last 101601-945(2 by default, 4 lost by default)
2026 record
9-4
Record since 1927
1601-945(6 no result)
Win rate
.629

The rating is calculated from published game results. It does not include any adjustment for playing Black.

Professional ratingsFind a player

Rating history — professional

17 gamesHigh 1868Low 1803
67 gamesHigh 1906Low 1786
120 gamesHigh 1925Low 1742
712 gamesHigh 2078Low 1742

The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
August 17, 2026Kanazawa HideoTengen　Colors unknown↑11
July 23, 2026Kobayashi IzumiGosei　Colors unknown↑8
July 13, 2026Okuda AyaHoninbo　Colors unknown↓26
June 4, 2026Suzuki AyumiHoninbo　Colors unknown↑11
May 23, 2026Kobayashi IzumiTeikei Cup Legend Final　as Black↑7
April 30, 2026Hikosaka NaotoTeikei Cup Legend Round 3　as Black↑20
April 13, 2026O RisseiTeikei Cup Legend Round 2　as White↑20
March 19, 2026Morita MichihiroKisei First Tournament Preliminary Quarterfinal　Colors unknown↓21
March 12, 2026Chen BoshaoJudan Preliminary C　as Black↓23
March 5, 2026Michael RedmondTeikei Cup Legend Round 1　as Black↑9
February 12, 2026Aoki ShinichiKisei First Tournament Round 2　as Black↑7
February 5, 2026Ishikura NoboruJudan Preliminary C　as Black↑3
January 15, 2026Miura TaroMeijin Preliminary B　as White↓6
October 30, 2025Cho UOza Preliminary A　as White↓7
October 23, 2025Kurotaki MasanoriTengen Preliminary A　as White↓27
September 25, 2025Awaji ShuzoOza Preliminary B Final　as White↑7
September 18, 2025Ogata MasakiMeijin Preliminary A Final　as Black↓21
August 28, 2025Kyo KagenGosei Preliminary A　as White↓3
August 7, 2025Takao ShinjiMeijin Preliminary A　as Black↑23
August 2, 2025Hikosaka NaotoTeikei Cup Legend Final　as Black↓18

Head-to-head

Up to 10 opponents, most-played first. Records are from Cho Chikun's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
OpponentTotalAs BlackAs White
Kobayashi Koichi66-66.50032-3333-32
Kato Masao70-44.61436-2534-18
Otake Hideo55-49.52928-2427-25
Takemiya Masaki63-31.67029-1534-16
Rin Kaiho50-39.56223-1927-20
O Rissei45-38.54224-2020-18
Yoda Norimoto38-32.54323-1514-17
Kobayashi Satoru36-34.51419-1816-15
Yamashiro Hiroshi33-19.63514-1117-7
O Meien30-16.65210-819-8
Yamashita Keigo19-25.4329-98-14
Ishida Yoshio22-14.61113-38-11
Ryu Shikun20-16.5569-127-2
Sakata Eio17-18.48611-76-11
Cho U8-27.2291-107-15
Kataoka Satoshi28-7.80011-417-3
Awaji Shuzo20-12.62512-67-6
Yuki Satoshi13-18.4198-143-3
Yamada Kimio17-13.5677-37-8
Hane Naoki17-12.5868-56-6
Fujisawa Shuko23-6.79315-38-3
Takao Shinji8-20.2862-94-10
Sonoda Yuichi17-7.70810-46-3
Cho Sonjin14-10.5839-33-7
Kudo Norio16-6.72710-36-2
Hashimoto Shoji12-10.5457-45-6
Hane Yasumasa16-5.7628-08-5
Kono Rin6-13.3164-52-6
Imamura Toshiya10-8.5562-67-2
Kato Atsushi8-10.4442-43-3
Ishida Akira12-6.6678-34-3
Takagi Shoichi12-6.6677-45-2
Mimura Tomoyasu12-5.7064-15-3
So Yokoku9-8.5293-64-2
Honda Kunihisa11-5.6886-05-5
Hikosaka Naoto13-2.8674-18-1
Ohira Shuzo9-5.6437-22-3
Iyama Yuta5-9.3572-63-3
Komatsu Hideki9-5.6434-34-2
Mizokami Tomochika8-5.6152-45-0
Hashimoto Utaro10-2.8335-15-1
Tono Hiroaki10-2.8334-16-1
Sugiuchi Masao9-3.7506-23-1
Sakai Takeshi9-3.7504-24-1
Shiraishi Yutaka11-01.0006-05-0
Ko Iso5-6.4552-23-2
Ishii Kunio10-1.9096-14-0
Rin Shien10-01.0001-04-0
Rin Kanketsu4-6.4002-11-4
Miyazawa Goro8-2.8003-05-2
Kim Sujun4-6.4002-32-1
Akiyama Jiro4-5.4442-42-1
Murakawa Daisuke4-5.4441-23-3
Cho Riyu2-7.2220-12-6
Morita Michihiro6-3.6673-22-0
Sato Masaharu8-1.8893-14-0
Nakamura Shinya8-1.8892-03-0
Hirata Tomoya4-5.4442-21-3
Kiyonari Tetsuya6-3.6674-32-0
Kojima Takaho6-2.7504-02-1
Sakai Hideyuki5-3.6251-14-2
Kurahashi Masayuki7-1.8753-13-0
Nakamura Hidehito6-2.7503-23-0
Han Zenki6-2.7502-03-2
Nakano Hironari6-1.8572-04-1
Iwata Tatsuaki4-3.5712-12-2
Haruyama Isamu5-2.7141-04-2
Kada Katsuji6-1.8574-12-0
Ichiriki Ryo1-6.1431-20-2
Hashimoto Yujiro4-2.6674-10-1
Yamabe Toshiro5-1.8332-03-1
Anzai Nobuaki3-3.5001-22-0
Tozawa Akinobu4-2.6672-02-2
Ogata Masaki3-3.5003-20-1
Uchida Shuhei3-3.5001-12-1
Yukawa Mitsuhisa6-01.0002-03-0
Kajiwara Takeo5-1.8331-14-0
Fujisawa Hosai6-01.0002-04-0
Oya Koichi5-1.8332-03-1
Kanda Ei6-01.0001-03-0
Kamimura Haruo4-2.6671-12-0
Sanno Hirotaka6-01.0003-03-0
Ishigure Ikuro5-1.8331-03-1
Nakaonoda Tomomi6-01.0004-01-0
Michael Redmond4-2.6672-12-1
Seki Tatsuya4-1.8002-00-0
Matsumoto Tokuji3-2.6002-11-1
Chin Kaei5-01.0002-02-0
Hoshino Masaki5-01.0004-00-0
Ogaki Yusaku4-1.8001-02-0
Adachi Toshimasa2-3.4000-22-0
Hisajima Kunio4-1.8004-00-1
Kyo Kagen2-3.4000-22-1
Kamimura Kunio5-01.0004-01-0
Kobayashi Izumi5-01.0002-01-0
Lee Ishu5-01.0003-00-0
Shimamura Toshihiro2-3.4002-20-1

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.

YearRecordWin rate
20269-4.692
202515-10.600
202411-9.550
202325-10.714
202212-9.571
20218-10.444
202014-10.583
201914-15.483
201818-17.514
201727-14.658
201622-16.579
201529-17.630
201417-14.548
201319-11.633
201226-17.605
201126-20.565
201029-21.580
200920-21.488
200832-30.516
200736-18.667
200637-20.649
200531-20.608
200433-22.600
200345-29.608
200239-26.600
200142-19.689
200030-30.500
199931-22.585
199830-20(2 no result).600
199722-15.595
199646-24.657
199529-26.527
199439-22.639
199331-13.705
199239-22.639
199135-17.673
199028-20.583
198932-18.640
198833-20.623
198740-24.625
198635-16.686
198532-15.681
198429-19.604
198328-23.549
198234-11.756
198132-10.762
198037-19(2 no result).661
197931-11.738
197823-12.657
197729-21.580
197637-13.740
197529-13(2 no result).691
197425-6.806
197323-10.697
197222-7.759
197119-5.792
197014-4.778
196917-6.739
19684-2.667
Total1601-945(6 no result).629

Calculated from games played between 1927 and 2026 (as of September 17, 2026).