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Katayama Yasuo

Katayama Yasuo (片山安雄) has a rating of 1418, ranked 334 of 452 in professional play. Their highest rating so far is 1622 (February 15, 2021).

Katayama Yasuo9 dan片山安雄Nihon Ki-in Chubu
Rating1418
Rank334
1-year change↑17
Peak rating1622
Last 10156-196
2026 record
6-7
Record since 1927
156-196
Win rate
.443

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 1434Low 1363
45 gamesHigh 1453Low 1363
79 gamesHigh 1531Low 1363
272 gamesHigh 1622Low 1363

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
August 10, 2026Yanagisawa SatoshiOkan　Colors unknown↓6
July 9, 2026Hikosaka NaotoTengen　Colors unknown↓3
June 22, 2026Imamura YoshiakiOza　Colors unknown↓7
June 15, 2026Hane ShigekoOkan　Colors unknown↑5
June 8, 2026Shiga TsukasaTengen　Colors unknown↑25
May 18, 2026Takahashi MasumiOza　Colors unknown↑22
May 11, 2026Sakuramoto AyakoHoninbo　Colors unknown↓20
April 30, 2026Kim HyunjongTengen　Colors unknown↑11
April 13, 2026Kato ChieHoninbo　Colors unknown↑29
March 2, 2026Hoda ShotaJudan　Colors unknown↓6
February 19, 2026Hane YasumasaGosei　Colors unknown↓10
January 29, 2026Kitazawa MasaakiJudan　Colors unknown↑16
January 19, 2026Takagi JunpeiKisei First Tournament Preliminary Round 1　Colors unknown↓16
December 8, 2025Suzukawa NatsumiMeijin　Colors unknown↓21
July 31, 2025Nakane DaikiOza　Colors unknown↓8
July 28, 2025Shimojima YoheiRyusei　Colors unknown↓4
June 30, 2025Hamanaka TakamitsuOza　Colors unknown↑11
June 9, 2025Hiroe HiroyukiOza　Colors unknown↑17
May 29, 2025Takao MariTengen　Colors unknown↓11
May 22, 2025Takao MariOkan　Colors unknown↓12

Head-to-head

Up to 10 opponents, most-played first. Records are from Katayama Yasuo'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
Yanagisawa Satoshi3-9.2500-00-0
Hane Yasumasa2-8.2000-10-0
Kawada Kohei5-5.5000-00-0
Okumura Hideo6-3.6670-00-0
Osawa Kenro5-4.5560-00-0
Hotta Seiji8-01.0000-00-0
Iwata Tatsuaki1-6.1430-00-0
Shinoda Mitsuaki6-1.8570-00-0
Takahashi Masumi3-4.4290-00-0
Hiroe Hiroyuki4-3.5710-00-0
Okumura Yasushi4-3.5710-00-0
Shimojima Yohei1-5.1670-00-0
O Keii2-4.3330-00-0
Baba Shigeru4-2.6670-00-0
Matsuoka Hideki1-5.1670-00-0
Asano Yasuko4-1.8000-00-0
Hamanaka Takamitsu5-01.0000-00-0
Yamashiro Hiroshi1-4.2000-10-0
Bian Wenkai2-3.4000-00-0
Imamura Yoshiaki1-4.2000-00-0
Nakao Jungo1-4.2000-00-0
Tsuruta Kazushi2-3.4000-00-0

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
20266-7.462
20256-10.375
20244-9.308
20235-12.294
20228-8.500
202111-12.478
202011-7.611
201912-8.600
20184-12.250
20176-13.316
20169-10.474
20158-9.471
20146-5.545
20133-6.333
20125-8.385
20119-5.643
20090-2.000
20080-1.000
20065-10.333
200512-8.600
20045-11.313
200314-8.636
20025-7.417
19950-1.000
19910-3.000
19900-1.000
19891-1.500
19881-1.500
19870-1.000
Total156-196.443

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