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Ao Kokubo

Player No.351
Rank4-dan
Date of birthOct 3, 2005
BirthplaceTokyo
TeacherOsamu Nakamura 9-dan
Junisen terms1
Career record5W-0L
Win rate1.000

Rating history and all games →

Junisen record

TermClassRankRecordUp/downDeviation
85th termClass C2585W-0L

How the deviation score is calculated: see here.

Terms in each class

Class C21 terms

Promotion history

Apr 1, 20264-dan
Oct 20213-dan

Best wins (highest-rated opponents)

Aug 27, 2026Kei Honda 1720Junisen
Jun 11, 2026Naohiro Ishida 1681Junisen
Aug 20, 2026Kouru Abe 1655Kisei-sen
Aug 20, 2026Eiji Iijima 1622Kisei-sen
Jul 9, 2026大島綾華 1559Kakogawa Seiryu-sen

Career wins and ratings are counted from the games recorded on this site (official games from FY1964, and Junisen games before that) and may differ from official records.

Frequent opponents

Eisaku Tomioka2W-0LHead-to-head
大島一馬アマ2W-0LHead-to-head
Takahiro Toyokawa1W-0LHead-to-head
Yoshiyuki Matsumoto1W-0LHead-to-head
Eiji Iijima1W-0LHead-to-head
Hiroaki Yokoyama0W-1LHead-to-head
Shingo Itoh1W-0LHead-to-head
Kouru Abe1W-0LHead-to-head
Wataru Kamimura1W-0LHead-to-head
Naohiro Ishida1W-0LHead-to-head
Yoshitaka Hoshino1W-0LHead-to-head
Asuto Saito0W-1LHead-to-head

Head-to-head with other players →