Go Player Ratings

JAAbout ratings

Koda Akiko

Koda Akiko (甲田明子) has a rating of 1124, ranked 438 of 452 in professional play. Their highest rating so far is 1357 (January 13, 2012).

Koda Akiko4 dan甲田明子Nihon Ki-in Tokyo
Rating1124
Rank438
1-year change↓34
Peak rating1357
Last 1042-173
2026 record
0-7
Record since 1927
42-173
Win rate
.195

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

Professional ratingsFind a player

Rating history — professional

7 gamesHigh 1153Low 1124
30 gamesHigh 1195Low 1124
50 gamesHigh 1195Low 1124
169 gamesHigh 1357Low 1124

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

Rating history in the women's tournaments pool (for reference)

4 gamesHigh 1368Low 1353
19 gamesHigh 1391Low 1347
35 gamesHigh 1431Low 1347
109 gamesHigh 1566Low 1347

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

Ratings in other pools

Ratings for general play and for women's tournaments are calculated independently and do not affect each other.

  • Women's tournaments: 1353 (#73)

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
August 24, 2026Yokota HinanoWomen's Kisei　Colors unknown↓5
April 30, 2026Kanno NaomiOza　Colors unknown↓16
April 13, 2026Obata MinoriHoninbo　Colors unknown↓5
February 26, 2026Ueda TakashiGosei　Colors unknown↓5
February 19, 2026Takao ShinjiTengen　Colors unknown±0
February 5, 2026Ryu ShikunJudan　Colors unknown±0
January 26, 2026Morita MichihiroKisei First Tournament Preliminary Round 1　Colors unknown↓1
December 25, 2025Obata MinoriSenko Cup Women's Strongest Player Preliminary　as Black↓11
November 24, 2025Tanimiya AyakoSenko Cup Women's Strongest Player Preliminary Round 1　Colors unknown↑6
November 17, 2025Antti TörmänenMeijin　Colors unknown↓6
September 25, 2025Okada YumikoWomen's Honinbo Preliminary Round 1　Colors unknown↓13
August 28, 2025Yoshihara YukariWomen's Kisei　Colors unknown↓6
August 18, 2025Shoji KazukoWomen's Kisei　Colors unknown↑6
August 18, 2025Goto ManaWomen's Kisei　Colors unknown↑21
July 10, 2025Mannami NaoWomen's Meijin　Colors unknown↓6
July 7, 2025Saga ShuntaroRyusei　Colors unknown↓4
July 3, 2025Tahara YasufumiOza　Colors unknown↓7
June 19, 2025Sugiuchi KazukoWomen's Meijin　Colors unknown↑14
May 19, 2025Kurotaki MasanoriTengen　Colors unknown↓3
May 12, 2025Kono MitsukiHoninbo　Colors unknown↓3

Head-to-head

Up to 10 opponents, most-played first. Records are from Koda Akiko'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
Izawa Akino4-4.5000-00-0
Okada Yumiko0-7.0000-10-0
Okuda Aya0-6.0000-00-1
Kudo Norio0-5.0000-20-1
Yoshihara Yukari0-5.0000-10-0
Makihata Taeko2-3.4000-00-0
Hoshiai Shiho1-4.2000-00-0
Shibusawa Machiko4-1.8000-00-0
Kato Tomoko2-3.4000-00-0
Mimura Kaori0-4.0000-00-0

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
20260-7.000
20255-14.263
20243-14.176
20231-16.059
20226-14.300
20212-15.118
20204-12.250
20193-14.176
20185-17.227
20174-18.182
20169-16.360
20153-12.200
20142-5.286
20133-6.333
20121-12.077
20116-8.429
20100-3.000
20091-1.500
20080-1.000
20070-3.000
20065-7.417
20055-13.278
20045-10.333
200311-10.524
20024-8.333
20011-01.000
20000-1.000
Total42-173.195

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