Players › Hiroki Iizuka

Hiroki Iizuka

Player No.	203
Rank	8-dan
Date of birth	Apr 2, 1969
Birthplace	Tokyo
Teacher	Tsutomu Matsushita 9-dan (deceased)

Junisen terms35

Career record177W-174L

Win rate0.504

Deviation score (FY2025)48.3

Best deviation score62.1
FY1997

Rating history and all games →

Junisen record

Term	Class	Rank	Record	Up/down	Deviation
85th term	Class C1	7	2W-3L
84th term	Class C1	23	7W-3L		48.3
83rd term	Class C1	24	4W-6L		46.2
82nd term	Class C1	16	4W-6L		44.3
81st term	Class C1	1	4W-6L		41.5
80th term	Class B2	25	3W-7L	Relegated	42.0
79th term	Class B2	12	2W-8L	Demerit	37.5
78th term	Class B2	8	5W-5L		49.3
77th term	Class B2	23	7W-3L	Demerit cleared	53.3
76th term	Class B2	17	3W-7L	Demerit	45.2
75th term	Class B2	9	4W-6L		51.1
74th term	Class B2	2	6W-4L		47.0
73rd term	Class B1	11	1W-11L	Relegated	47.8
72nd term	Class B1	11	4W-8L		48.4
71st term	Class B1	13	4W-8L		52.7
70th term	Class B2	16	8W-2L	Promoted	58.2
69th term	Class B2	9	4W-6L		52.1
68th term	Class B2	14	6W-4L		52.3
67th term	Class B2	12	5W-5L		52.7
66th term	Class B2	9	5W-5L		54.3
65th term	Class B2	10	6W-4L		47.9
64th term	Class B2	19	6W-4L		51.7
63rd term	Class C1	5	8W-2L	Promoted	60.9
62nd term	Class C1	20	8W-2L		55.8
61st term	Class C1	23	4W-6L		51.4
60th term	Class C1	24	3W-7L		53.6
59th term	Class C2	4	8W-2L	Promoted	50.9
58th term	Class C2	6	7W-3L		57.3
57th term	Class C2	3	7W-3L		50.5
56th term	Class C2	14	8W-2L		62.1
55th term	Class C2	17	6W-4L		53.9
54th term	Class C2	32	6W-4L		57.4
53rd term	Class C2	33	4W-6L		51.2
52nd term	Class C2	42	4W-6L		53.6
51st term	Class C2	55	4W-6L		48.5

How the deviation score is calculated: see here.

Terms in each class

Class B1	3 terms
Class B2	14 terms
Class C1	9 terms
Class C2	9 terms

Promotion history

Jun 7, 2023	8-dan
Oct 27, 2009	7-dan
Aug 13, 2001	6-dan
Aug 5, 1996	5-dan
Apr 1, 1992	4-dan
1988	1-dan

Career win milestones

100 wins	Jul 19, 1996 Ryuo-sen
200 wins	Nov 2, 2000 Oi-sen
300 wins	Feb 22, 2006 Kio-sen
400 wins	Oct 27, 2011 Kisei-sen
500 wins	Apr 9, 2019 Kio-sen

Best wins (highest-rated opponents)

Oct 21, 1997	Tadahisa Maruyama 1922	Oi-sen
Dec 8, 1997	Tadahisa Maruyama 1917	Kio-sen
Dec 3, 2004	Akira Watanabe 1898	Kisei-sen
Feb 16, 2005	Koji Tanigawa 1896	Kisei-sen
Jul 19, 1996	Tadahisa Maruyama 1888	Ryuo-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

Hiroki Nakata	11W-12L	Head-to-head
Takeshi Fujii	7W-13L	Head-to-head
Daisuke Nakagawa	8W-11L	Head-to-head
Osamu Nakamura	10W-7L	Head-to-head
Masataka Sugimoto	7W-10L	Head-to-head
Nobuyuki Yashiki	5W-11L	Head-to-head
Tadahisa Maruyama	3W-13L	Head-to-head
Hiroyuki Miura	5W-10L	Head-to-head
Shuji Satoh	5W-9L	Head-to-head
Yoshiyuki Kubota	11W-3L	Head-to-head
Tadao Kitajima	7W-7L	Head-to-head
Ayumu Matsuo	6W-8L	Head-to-head

Head-to-head with other players →