Go Player Ratings

JAAbout ratings

Kono Yukio

Kono Yukio (河野征夫) has a rating of 1041, ranked 444 of 452 in professional play. Their highest rating so far is 1296 (February 16, 2006).

Kono Yukio5 dan河野征夫Nihon Ki-in Tokyo
Rating1041
Rank444
1-year change↑4
Peak rating1296
Last 1035-175
2026 record
1-6
Record since 1927
35-175
Win rate
.167

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

Professional ratingsFind a player

Rating history — professional

8 gamesHigh 1051Low 1034
26 gamesHigh 1074Low 1034
46 gamesHigh 1089Low 1034
153 gamesHigh 1296Low 1034

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
May 7, 2026Tsurumaru KeiichiOza　Colors unknown↓6
April 20, 2026Koyama TerumiTengen　Colors unknown↓1
April 9, 2026Fujisawa KazunariHoninbo　Colors unknown↓2
March 26, 2026Suzuki AyumiGosei　Colors unknown↓1
March 2, 2026Miyamoto ChiharuTengen　Colors unknown↑17
January 29, 2026Takekiyo IsamuJudan　Colors unknown↓1
January 22, 2026Ogaki YusakuKisei First Tournament Preliminary Round 1　Colors unknown±0
November 17, 2025Yanai KazumaMeijin　Colors unknown↓1
July 7, 2025Oya KoichiRyusei　Colors unknown↓2
June 26, 2025Kato KeikoOza　Colors unknown↓4
May 19, 2025Kobayashi ChizuTengen　Colors unknown↓7
May 12, 2025Sato MasaharuHoninbo　Colors unknown↓2
April 10, 2025Xiao YuyangMeijin　Colors unknown±0
March 3, 2025Shuto ShunAgon Kiriyama Cup　Colors unknown±0
February 27, 2025Katsura AtsushiJudan　Colors unknown↓3
February 20, 2025Yo KaeiGosei　Colors unknown↓2
January 9, 2025Kubo HideoKisei First Tournament Preliminary Round 2　Colors unknown↓1
July 29, 2024Sonoda YasutakaRyusei　Colors unknown↓1
May 16, 2024Cho KosumiOza　Colors unknown↓4
April 18, 2024Kenmochi JoHoninbo　Colors unknown↓3

Head-to-head

Up to 10 opponents, most-played first. Records are from Kono Yukio'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
Ko Iun1-3.2500-00-0
Kawai Shoji1-3.2500-00-0
Onishi Kenya0-3.0000-00-0
Yo Kaei0-3.0000-00-0
Doi Makoto1-2.3330-01-0
Tsurumaru Keiichi0-3.0000-00-0
Shoji Kazuko3-01.0000-00-0
Shibusawa Machiko2-1.6670-00-0
Kamimura Haruo0-3.0000-00-0
Ko Reibun0-3.0000-00-0

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
20261-6.143
20250-10.000
20240-7.000
20232-10.167
20220-7.000
20211-11.083
20200-6.000
20191-10.091
20181-11.083
20172-12.143
20162-10.167
20153-9.250
20141-6.143
20131-3.250
20120-7.000
20113-6.333
20100-2.000
20090-1.000
20060-3.000
20052-8.200
20044-8.333
20033-9.250
20026-7.462
19820-1.000
19810-1.000
19782-1.667
19750-1.000
19730-1.000
19690-1.000
Total35-175.167

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