Go Player Ratings

JAAbout ratings

Tozawa Akinobu

Tozawa Akinobu (戸沢昭宣) has a rating of 1323. Their highest rating so far is 1578 (March 19, 2007).

Retired. The rating shown is the rating at retirement.

Tozawa Akinobu戸沢昭宣Nihon Ki-in
Rating1323
Rank—
1-year change—
Peak rating1578
Last 10243-325
2025 record
0-1
Record since 1927
243-325
Win rate
.428

Rating at retirement (not included in the rating list)

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

Professional ratingsFind a player

Rating history — professional

14 gamesHigh 1363Low 1316
36 gamesHigh 1414Low 1316
189 gamesHigh 1578Low 1297

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
January 16, 2025O RisseiKisei First Tournament Preliminary Round 2　Colors unknown↓2
December 19, 2024Nobuta ShigehitoKisei First Tournament Preliminary Round 1　Colors unknown↑10
July 29, 2024Koyama TerumiRyusei　Colors unknown↓5
May 20, 2024Mizokami TomochikaHoninbo　Colors unknown↓1
April 25, 2024Takeshita NanaOza　Colors unknown↓10
April 15, 2024Kikuchi YoshioHoninbo　Colors unknown↑7
April 8, 2024Yamada TakujiTengen　Colors unknown↓3
April 1, 2024Seki RyosukeGosei　Colors unknown↓8
March 25, 2024Xie YiminMeijin　Colors unknown↓2
March 14, 2024Sato MasaharuJudan　Colors unknown↓8
February 19, 2024Cho KoharuAgon Kiriyama Cup　Colors unknown↓16
January 18, 2024Nyu EikoJudan　Colors unknown↑28
January 8, 2024Sato MasaharuKisei First Tournament Preliminary Round 1　Colors unknown↓9
November 30, 2023Tsuji HanaJudan　Colors unknown↑26
August 21, 2023Cho KosumiRyusei　Colors unknown↓13
June 26, 2023Jo BunenHoninbo　Colors unknown↓7
May 22, 2023Cho KosumiOza　Colors unknown↓15
May 8, 2023Hamakado HibikiTengen　Colors unknown↓7
April 6, 2023Aoki KikuyoGosei　Colors unknown↓10
March 20, 2023Hashimoto YujiroAgon Kiriyama Cup　Colors unknown↓10

Head-to-head

Up to 10 opponents, most-played first. Records are from Tozawa Akinobu'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
Kudo Norio3-6.3333-20-3
Kato Masao1-8.1111-50-3
Kojima Takaho3-6.3332-00-2
Rin Kaiho3-6.3331-32-2
Ohira Shuzo0-8.0000-50-3
Sato Masaharu3-5.3750-12-2
Kuroda Yukio6-1.8571-15-0
Otake Hideo1-6.1431-30-3
Takagi Shoichi3-4.4290-12-2
Kuwahara Munehisa2-4.3331-21-2
Oeda Yusuke4-2.6673-21-0
Kodama Kunio4-2.6674-10-1
Fujisawa Hosai1-5.1670-31-2
Cho Chikun2-4.3332-20-2
Magari Reiki1-4.2001-00-4
Matsumoto Tokuji2-3.4001-21-1
Hane Yasumasa1-4.2001-40-0
Ishida Yoshio0-5.0000-20-2
Kamimura Haruo0-5.0000-00-0
Ishigure Ikuro2-3.4001-11-2
Hoshino Toshi5-01.0003-02-0
Ishii Mamoru2-3.4001-21-0
Sakai Takeshi2-3.4002-10-1

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
20250-1.000
20243-9.250
20232-7.222
20224-9.308
20216-10.375
20202-6.250
20194-10.286
20182-11.154
201711-12.478
20163-9.250
20159-10.474
20141-4.200
20135-4.556
20123-8.273
20114-7.364
20100-1.000
20090-1.000
20071-1.500
20065-5.500
20059-9.500
20048-11.421
20035-9.357
20025-7.417
20010-1.000
19980-1.000
19952-1.667
19942-3.400
19930-1.000
19922-4.333
19911-2.333
19893-3.500
19880-1.000
19870-4.000
19861-2.333
19851-1.500
19840-3.000
19830-2.000
19821-6.143
19811-1.500
19800-2.000
19790-1.000
19782-6.250
19772-4.333
19768-9.471
197515-9.625
197418-6.750
19735-7.417
19724-7.364
19717-9.438
19706-8.429
196913-5.722
19685-6.455
19679-8.529
196613-7.650
19658-10.444
19645-7.417
19639-7.563
19626-3.667
19611-4.200
19601-3.250
Total243-325.428

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