Players › Koji Horiguchi

Koji Horiguchi

Player No.	154
Rank	8-dan
Date of birth	May 16, 1961
Birthplace	Tokyo
Teacher	Hiroji Katou 9-dan (deceased)

Junisen terms25

Career record112W-138L

Win rate0.448

Deviation score (FY2006)30.8

Best deviation score56.8
FY1982

Rating history and all games →

Junisen record

Term	Class	Rank	Record	Up/down	Deviation
65th term	Class C2	39	3W-7L	Relegated	30.8
64th term	Class C2	39	3W-7L	Demerit	43.1
63rd term	Class C2	35	2W-8L	Demerit	35.7
62nd term	Class C2	16	3W-7L		42.7
61st term	Class C2	2	5W-5L		41.2
60th term	Class C1	29	3W-7L	Relegated	41.2
59th term	Class C1	18	1W-9L	Demerit	36.5
58th term	Class C1	17	4W-6L		46.1
57th term	Class C1	17	4W-6L		42.7
56th term	Class C1	15	3W-7L		48.9
55th term	Class C1	5	3W-7L		42.7
54th term	Class C1	16	6W-4L	△→cleared	50.0
53rd term	Class C1	16	4W-6L	△	50.8
52nd term	Class C1	24	5W-5L	△	49.3
51st term	Class C1	13	2W-8L	Demerit	42.2
50th term	Class C1	7	4W-6L		47.4
49th term	Class C1	7	6W-4L		54.1
48th term	Class C1	6	6W-4L		51.2
47th term	Class C1	10	7W-3L		56.4
46th term	Class C1	19	6W-4L		49.2
45th term	Class C1	21	3W-7L		48.2
44th term	Class C2	5	8W-2L	Promoted	56.0
43rd term	Class C2	6	7W-3L		54.4
42nd term	Class C2	5	7W-3L		54.1
41st term	Class C2	40	7W-3L		56.8

How the deviation score is calculated: see here.

Terms in each class

Class C1	16 terms
Class C2	9 terms

Promotion history

Apr 1, 2024	8-dan
Dec 16, 2003	7-dan
Mar 31, 1992	6-dan
Apr 1, 1986	5-dan
Feb 3, 1982	4-dan
1978	1-dan

Career win milestones

100 wins	Nov 1, 1985 Judan-sen
200 wins	Sep 28, 1990 All-Japan Pro
300 wins	Mar 17, 1997 Osho-sen
400 wins	Sep 12, 2006 Junisen

Best wins (highest-rated opponents)

Jun 10, 1997	Nobuyuki Yashiki 1872	Junisen
Apr 28, 1983	Torahiko Tanaka 1829	Shinjin-o-sen
Jun 7, 1994	Tadahisa Maruyama 1826	Kisei-sen
Aug 29, 1990	Kunio Yonenaga 1817	All-Japan Pro
Dec 16, 1988	Taku Morishita 1795	Tenno-sen

Career wins and ratings are counted from the games recorded on this site (official games from FY1964, and Junisen games before that) and may differ from official records.

Frequent opponents

Katsuhiko Murooka	11W-14L	Head-to-head
Yoshinori Satou	8W-8L	Head-to-head
Kazuharu Shoshi	10W-6L	Head-to-head
Toshihiko Kawaguchi	13W-2L	Head-to-head
Koji Tosa	8W-7L	Head-to-head
Toshio Miyata	7W-6L	Head-to-head
Ichiro Hiura	4W-9L	Head-to-head
Akio Ishikawa	2W-11L	Head-to-head
Hatasu Itou	4W-8L	Head-to-head
Masaki Izumi	3W-9L	Head-to-head
Hiroshi Kamiya	5W-7L	Head-to-head
Kazuyoshi Nishimura	4W-7L	Head-to-head

Head-to-head with other players →