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Kōzō Arimori
Kōzō Arimori
Native name	有森浩三
Born	February 13, 1963 (age 61)
Hometown	Okayama
Nationality	]
Career
Achieved professional status	March 9, 1983 (aged 20)
Badge Number	158
Rank	8-dan
Teacher	Michio Ariyoshi (9-dan)
Meijin class	Free
Ryūō class	6
Websites
	JSA profile page

Kōzō Arimori (有森浩三, Arimori Kōzō, February 13, 1963) is a Japanese professional shogi player ranked 8-dan.

Early life, amateur shogi and apprenticeship

Arimori was born in Okayama, Okayama Prefecture on February 13, 1963.^[1] As a junior high school student he won the 2nd Junior High School Student Meijin Tournament [ja] in 1977,^[2] and that same year was accepted into the Japan Shogi Association's apprentice school at the rank of apprentice professional 5-kyū under the tutelage of shogi professional Michio Ariyoshi.^[1] Arimori obtained the rank of apprentice professional 1-dan in 1979 and was awarded full professional status and the rank of 4-dan in March 1983.^[3]

In March 2007, Arimori declared his intention to the Japan Shogi Association to become a Free Class player as of April 2007.^[4]

The promotion history for Arimori is as follows:^[3]

Arimori received the JSA's "25 Years Service Award" in 2011 in recognition of being an active professional for twenty-five years.^[5]

^ ^a ^b "Kishi Dētabēsu: Arimori Kōzō" 棋士データベース: 有森浩三 [Professional Shogi Player Database: Kōzō Arimori] (in Japanese). Japan Shogi Association. Retrieved January 22, 2020.
^ "Chūgakusei Shōgi Meijinsen Rekidai Yūshōsha Ichiran" 中学生将棋名人戦歴代優勝者一覧 [Junior High School Student Meijin Tournament: List of Winners] (in Japanese). Japan Shogi Association. Retrieved January 22, 2020.
^ ^a ^b "Kishi Dētabēsu: Arimori Kōzō Shōdan Rireki" 棋士データベース: 有森浩三昇段履歴 [Professional Shogi Player Database: Kōzō Arimori Promotion History] (in Japanese). Japan Shogi Association. Retrieved February 9, 2023.
^ "Nisenrokunendonai Intaikishitō" 2006年度内引退棋士等 [Players who retired, etc. during the 2006-2007 Shogi Year] (in Japanese). Japan Shogi Association. March 31, 2007. Retrieved January 22, 2020.
^ "Kishi Dētabēsu: Arimori Kōzō Sonota Hyōshō" 棋士データベース: 有森浩三その他表彰 [Professional Shogi Player Database: Kōzō Arimori Other Awards] (in Japanese). Japan Shogi Association. Retrieved January 22, 2020.

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