Go Player Ratings

JAAbout ratings

Hatanaka Hoshinobu

Hatanaka Hoshinobu (畠中星信) has a rating of 1681, ranked 145 of 452 in professional play. Their highest rating so far is 1699 (March 25, 2026).

Hatanaka Hoshinobu5 dan畠中星信Kansai Ki-in
Rating1681
Rank145
1-year change↑39
Peak rating1699
Last 1045-52(2 by default)
2026 record
4-2
Record since 1927
45-52
Win rate
.464

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

Professional ratingsFind a player

Rating history — professional

6 gamesHigh 1699Low 1651
17 gamesHigh 1699Low 1601
26 gamesHigh 1699Low 1557
91 gamesHigh 1699Low 1468

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 27, 2026Omote YutoJudan Preliminary A　as White↓8
May 6, 2026Taniguchi ToruKisei First Tournament Round 5　as Black↓10
March 25, 2026Hara MasakazuKisei First Tournament Round 4　as Black↑20
March 4, 2026Kiyonari TetsuyaKisei First Tournament Round 3　as White↑20
January 28, 2026Imai KazuhiroKisei First Tournament Preliminary Round 2　Colors unknown↑8
January 15, 2026Ikawa RyougoKisei First Tournament Preliminary Round 1　Colors unknown↑9
April 3, 2025Kato ChieKisei First Tournament Preliminary Quarterfinal　Colors unknown↓14
March 5, 2025Hasegawa SunaoMeijin Preliminary C　as Black↑12
February 6, 2025Tanaka NobuyukiKisei First Tournament Preliminary Round 2　Colors unknown↑22
January 15, 2025Sato AkiraKisei First Tournament Preliminary Round 1　Colors unknown↑6
November 20, 2024Yata NaokiTengen Preliminary A　as Black↑16
September 30, 2024Sakai KentaroKansai Ki-in First Place Tournament Preliminary　as White↓17
July 10, 2024U BoiGosei Preliminary A　as Black↓5
March 28, 2024Sakai YukiTengen Round 1　as Black↓2
March 7, 2024Muramoto WataruKisei First Tournament Round 2　as Black↓9
February 8, 2024Tamura ChiakiKisei First Tournament Preliminary Round 1　Colors unknown↑7
January 10, 2024Yuki SatoshiTengen Preliminary A Final　as White↑29
August 23, 2023Sada AtsushiGosei Preliminary A　as White↑29
July 12, 2023Tanaka KoyuMeijin Preliminary B　as White↓5
May 24, 2023Okawa TakuyaMeijin Preliminary B　as Black↑17

Head-to-head

Up to 10 opponents, most-played first. Records are from Hatanaka Hoshinobu'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
Hara Masakazu4-01.0001-01-0
Yuki Satoshi2-2.5001-11-1
Yamada Noriyoshi2-1.6671-10-0
Sada Atsushi1-2.3330-11-1
Murakawa Daisuke0-3.0000-10-2
Kiyonari Tetsuya1-2.3330-01-2
Tsukuda Akiko2-01.0000-00-0
Shida Tatsuya0-2.0000-20-0
Furuya Yutaka2-01.0002-00-0
Fujii Shuya0-2.0000-10-1

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
20264-2.667
20253-1.750
20243-4.429
20232-2.500
20221-4.200
20211-2.333
20202-2.500
20192-4.333
20184-3.571
20178-6.571
20166-7.462
20151-1.500
20132-3.400
20123-2.600
20110-3.000
20100-1.000
20080-1.000
20070-1.000
20062-1.667
20051-1.500
20040-1.000
Total45-52.464

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