Players › Kentaro Ishii

Kentaro Ishii

Player No.	293
Rank	7-dan
Date of birth	Apr 13, 1992
Birthplace	Chiba
Teacher	Kazuharu Shoshi 8-dan

Junisen terms13

Career record87W-42L

Win rate0.674

Deviation score (FY2025)48.4

Best deviation score62.8
FY2023

Rating history and all games →

Junisen record

Term	Class	Rank	Record	Up/down	Deviation
85th term	Class B2	2	3W-2L
84th term	Class B1	9	3W-9L	Relegated	48.4
83rd term	Class B1	13	6W-6L		55.7
82nd term	Class B2	21	8W-2L	Promoted	62.8
81st term	Class C1	3	9W-1L	Promoted	60.6
80th term	Class C1	8	7W-3L		48.0
79th term	Class C1	4	6W-4L		60.7
78th term	Class C1	34	9W-1L		58.4
77th term	Class C2	2	8W-2L	Promoted	56.3
76th term	Class C2	7	8W-2L		57.9
75th term	Class C2	11	7W-3L		51.4
74th term	Class C2	19	7W-3L		59.4
73rd term	Class C2	47	6W-4L		50.9

How the deviation score is calculated: see here.

Terms in each class

Class B1	2 terms
Class B2	2 terms
Class C1	4 terms
Class C2	5 terms

Promotion history

Mar 6, 2024	7-dan
Jun 5, 2020	6-dan
Oct 30, 2017	5-dan
Oct 1, 2013	4-dan
Apr 2010	3-dan

Career win milestones

100 wins	Sep 8, 2017 Oi-sen
200 wins	Mar 19, 2021 Eio-sen
300 wins	Sep 18, 2026 Kio-sen

Best wins (highest-rated opponents)

May 25, 2021	Akira Watanabe 2010	Oza-sen
Oct 9, 2026	Takumi Ito 1949	Kio-sen
Jun 2, 2022	Akira Watanabe 1949	Oza-sen
May 8, 2023	Takuya Nagase 1948	Oi-sen
Sep 12, 2023	Daichi Sasaki 1888	Ginga-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

Mirai Aoshima	4W-11L	Head-to-head
Taichi Takami	7W-5L	Head-to-head
Kazutoshi Satoh	6W-4L	Head-to-head
Satoshi Takano	6W-4L	Head-to-head
Daichi Sasaki	3W-7L	Head-to-head
Tatsuya Sanmaido	7W-2L	Head-to-head
Kota Kanai	6W-2L	Head-to-head
Takuma Oikawa	5W-3L	Head-to-head
Hiromu Watanabe	4W-4L	Head-to-head
Daisuke Katagami	3W-4L	Head-to-head
Kouhei Funae	4W-3L	Head-to-head
Keita Kadokura	5W-2L	Head-to-head

Head-to-head with other players →