Go Player Ratings

JAAbout ratings

So Yokoku

So Yokoku (蘇耀国) has a rating of 1826, ranked 71 of 452 in professional play. Their highest rating so far is 2001 (July 4, 2022).

So Yokoku9 dan蘇耀国Nihon Ki-in Tokyo
Rating1826
Rank71
1-year change↓9
Peak rating2001
Last 10484-347(3 lost by default)
2026 record
8-7
Record since 1927
484-347
Win rate
.582

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

Professional ratingsFind a player

Rating history — professional

24 gamesHigh 1866Low 1821
85 gamesHigh 1967Low 1821
151 gamesHigh 2001Low 1821
600 gamesHigh 2001Low 1766

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
September 3, 2026Kanno MasashiSGW Cup Chuyo Preliminary Round 1　Colors unknown↓31
August 20, 2026Yamada TakujiGosei　Colors unknown↑9
July 13, 2026Kim SujunGosei　Colors unknown↑14
June 18, 2026Kim SujunHoninbo　Colors unknown↓20
June 11, 2026Ko IsoJudan　Colors unknown↓9
June 1, 2026Mizokami DaisukeGosei　Colors unknown↑4
May 18, 2026Takanashi SeikenJudan　Colors unknown↑8
April 27, 2026Shiraishi YuichiHoninbo　Colors unknown↑5
April 2, 2026Hoshiai ShihoGosei　Colors unknown↑10
March 16, 2026Kuwabara ItsukiKisei First Tournament Round 3　as Black↓12
March 9, 2026Ishigure IkuroGosei Preliminary C　as White↑8
March 2, 2026Hirata TomoyaOza Final Preliminary Final　as Black↓6
February 19, 2026Takemiya MasakiKisei First Tournament Round 2　as Black↑7
February 12, 2026Koike YoshihiroTengen Round 1　as Black↓7
January 12, 2026Takeuchi KosukeMeijin　Colors unknown↓19
December 15, 2025Kato AtsushiOza　Colors unknown↑14
November 24, 2025Onishi RyuheiTengen　Colors unknown↑24
November 19, 2025Furuya YutakaKisei League C Round 5　as Black↓22
November 13, 2025Cho SonjinMeijin　Colors unknown↑10
November 6, 2025Cho RiyuOza　Colors unknown↑19

Head-to-head

Up to 10 opponents, most-played first. Records are from So Yokoku'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
Cho U8-11.4212-64-4
Kobayashi Satoru10-8.5563-65-2
Cho Chikun8-9.4712-46-3
Takao Shinji5-11.3131-44-5
Kim Sujun5-10.3331-30-2
Hane Naoki2-12.1431-31-6
Ko Iso7-6.5383-20-0
Mizokami Tomochika9-4.6922-01-3
Kono Rin3-10.2311-60-4
Yuki Satoshi6-7.4623-31-3
Yoda Norimoto6-6.5001-35-3
Yamada Kimio3-9.2503-30-4
Yamashita Keigo4-8.3331-31-5
O Meien5-6.4552-23-3
Han Zenki9-2.8181-02-0
Akiyama Jiro6-4.6002-11-2
Kataoka Satoshi7-3.7002-23-0
Tsuruyama Atsushi5-4.5563-20-0
O Rissei6-3.6672-23-1
Rin Kanketsu4-5.4441-22-0
Ryu Shikun6-3.6673-22-1
Mochizuki Kenichi4-4.5001-01-1
Sugimoto Akira8-01.0000-02-0
Shida Tatsuya4-4.5001-23-2
Onishi Ryuhei3-5.3751-10-2
Murakawa Daisuke2-6.2502-20-4
Kato Atsushi4-4.5000-00-2
Cho Sonjin4-4.5002-41-0
Motoki Katsuya2-5.2861-10-2
Yu Zhengqi1-6.1431-50-1
Yamashiro Hiroshi3-4.4292-21-1
Ogaki Yusaku4-3.5711-00-1
Adachi Toshimasa3-4.4290-32-1
Rin Kaiho6-1.8573-12-0
Sun Zhe5-2.7141-21-0
Iyama Yuta2-5.2861-10-3
Komatsu Hideki6-1.8570-01-1
Hirata Tomoya1-6.1430-30-2
Seto Taiki5-2.7143-11-1
Nakano Hironari5-1.8331-02-1
Takemiya Masaki4-2.6672-11-1
Ishida Yoshio3-3.5001-10-2
Yamada Takuji2-4.3330-01-2
Cho Riyu5-1.8333-00-1
Oya Koichi5-1.8331-01-0
Michael Redmond2-4.3330-10-1
Rin Shien4-1.8000-13-0
Kubo Hideo3-2.6001-10-0
Mimura Tomoyasu0-5.0000-10-1
Ko Iun5-01.0000-00-0
Sakai Hideyuki4-1.8001-01-1
Ueno Asami0-5.0000-10-2
Kyo Kagen0-5.0000-30-1
Omori Yasushi5-01.0000-01-0
Matsumoto Takehisa4-1.8001-00-1
Kobayashi Koichi3-2.6002-11-0
Hikosaka Naoto1-4.2001-20-1
Takeuchi Kosuke3-2.6000-00-0
Nakamura Shinya3-2.6003-10-0
Ohashi Hirofumi4-1.8000-03-0
Kanazawa Hideo4-1.8001-00-1
Nakaonoda Tomomi4-1.8001-10-0

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
20268-7.533
202514-12.538
202415-14.517
202319-16.543
202221-15.583
202122-10.688
202017-19.472
201915-14.517
201822-12.647
201722-17.564
201612-12.500
201511-16.407
201416-9.640
201315-8.652
201219-10.655
20118-8.500
20105-14.263
200922-11.667
200814-13.518
200716-21.432
200628-19.596
200537-16.698
200433-15.688
200332-11.744
200219-10.655
20016-6.500
20002-5.286
19996-4.600
19983-1.750
19972-1.667
19953-1.750
Total484-347.582

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