Oto Shozo

Oto Shozo (大戸省三) has a rating of 1182. Their highest rating so far is 1239 (May 19, 2006).

Retired. The rating shown is the rating at retirement.

Oto Shozo大戸省三Nihon Ki-in

Rating1182

Rank—

1-year change—

Peak rating1239

Last 109-67

2014 record: 0-2
Record since 1927: 9-67
Win rate: .118

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 ratings Find a player

Rating history — professional

All

30 gamesHigh 1239Low 1156

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.
Date	Opponent and tournament	Result	Change
May 30, 2014	Ito MasashiOza　Colors unknown	Loss	↓2
April 18, 2014	Sakai TakeshiMeijin　Colors unknown	Loss	↓2
May 17, 2013	Yamada ShinjiOza　Colors unknown	Loss	↓3
February 28, 2013	So KofukuGosei　Colors unknown	Loss	↓3
February 13, 2013	Hiraoka SatoshiAgon Kiriyama Cup　Colors unknown	Loss	↓8
January 24, 2013	Takemiya MasakiJudan Preliminary C　as Black	Loss	↓1
January 17, 2013	Hagiya KazuhiroGosei　Colors unknown	Win	↑20
December 6, 2012	Mimura KaoriHoninbo　Colors unknown	Loss	↓4
November 10, 2012	Koyama RyugoMeijin　Colors unknown	Loss	↓5
October 25, 2012	Tominaga TakeshiHoninbo　Colors unknown	Win	↑22
October 6, 2012	Tsurumaru KeiichiJudan　Colors unknown	Loss	↓6
September 1, 2012	Shibusawa MachikoJudan　Colors unknown	Win	↑20
March 31, 2012	Ko IunTengen　Colors unknown	Loss	↓2
February 13, 2012	Hiraoka SatoshiAgon Kiriyama Cup Preliminary　as White	Loss	↓5
February 3, 2012	Takabayashi TakujiOza　Colors unknown	Loss	↓10
January 27, 2012	Kaku KyushinMeijin　Colors unknown	Loss	↓9
January 19, 2012	Ishikura NoboruGosei　Colors unknown	Loss	↓3
November 25, 2011	Makihata TaekoGosei　Colors unknown	Loss	↓6
October 20, 2011	Kaku KyushinHoninbo　Colors unknown	Loss	↓10
September 16, 2011	Nagashima KozueHoninbo　Colors unknown	Loss	↓7

Head-to-head

Up to 10 opponents, most-played first. Records are from Oto Shozo's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
Opponent	Total	As Black	As White
Kaku Kyushin	0-3.000	0-0	0-0
Tsurumaru Keiichi	0-2.000	0-0	0-0
Takemiya Masaki	0-2.000	0-2	0-0
Noguchi Hitoshi	2-01.000	0-0	0-0
Takahashi Hideo	0-2.000	0-0	0-0
Tamaki Shinobu	0-2.000	0-0	0-0
Hiraoka Satoshi	0-2.000	0-0	0-1
Koyama Ryugo	0-2.000	0-0	0-0
Inoue Hatsue	1-01.000	0-0	0-0
Takano Hideki	0-1.000	0-0	0-0

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.

Year	Record	Win rate
2014	0-2	.000
2013	1-4	.200
2012	2-8	.200
2011	0-6	.000
2010	0-2	.000
2009	0-1	.000
2006	1-3	.250
2005	0-7	.000
2004	2-8	.200
2003	1-9	.100
2002	1-7	.125
1994	0-1	.000
1993	1-2	.333
1992	0-1	.000
1991	0-1	.000
1988	0-1	.000
1985	0-1	.000
1983	0-1	.000
1982	0-1	.000
1976	0-1	.000
Total	9-67	.118

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