Kōji Tosa
Native name土佐浩司
Born (1955-03-30) March 30, 1955
HometownMinamiuonuma
NationalityJapanese
Career
Achieved professional statusFebruary 19, 1976(1976-02-19) (aged 20)
Badge Number124
Rank8-dan
RetiredMay 14, 2020(2020-05-14) (aged 65)
TeacherShizuo Seino (8-dan)
Tournaments won1
Career record666–728 (.478)[1]
Websites
JSA profile page

Kōji Tosa (土佐 浩司, Tosa Kōji, March 30, 1955) is a Japanese retired professional shogi player who achieved the rank of 8-dan.[2]

Shogi professional

Tosa's only tournament victory as a shogi professional came in 1998 when he defeated Toshiyuki Moriuchi to win the 32nd Hayazashi Shogi Senshuken.[3]

In August 2010, Tosa defeated Kiyozumi Kiriyama in 69th Meijin Class B2 league play to become the 42nd professional to win 600 official games.[4][5]

In March 2017, Tosa finished the finished 75th Meijin Class C2 league play (April 2016 – March 2017) with a record of no wins and 10 losses, earning a second demotion point which meant he was only one point away from automatic demotion to "Free Class" play.[6] As a result, he declared his intention to the Japan Shogi Association to become a Free Class player as of April 2017 rather than risk automatic demotion.[7]

On June 8, 2020, the Japan Shogi Association announced on its website that Tosa had retired from professional shogi. His official retirement date was given as May 14, 2020.[8] Tosa retired with a career record of 666 wins and 728 losses for a winning percentage of 0.478.[1]

Promotion history

The promotion history for Tosa is as follows:[9]

  • 6-kyū: 1971
  • 1-dan: 1973
  • 4-dan: February 19, 1976
  • 5-dan: April 1, 1984
  • 6-dan: April 14, 1989
  • 7-dan: July 25, 1997
  • 8-dan: September 18, 2014
  • Retired: May 14, 2020

Titles and other championships

Tosa has never appeared in a major title match, but he has won one non-title shogi championships during his career.[10]

Awards and honors

Tosa received the JSA's "25 Years Service Award" in 2000 in recognition of being an active professional for twenty-five years and the "Shogi Honor Award" in 2010 for winning 600 official games.[11]

References

  1. 1 2 "Tsūsan Seiseki" 通算成績 [Career Records] (in Japanese). Japan Shogi Association. July 17, 2020. Archived from the original on July 18, 2020. Retrieved December 20, 2023.{{cite web}}: CS1 maint: unfit URL (link)
  2. ↑ "Kishi Dētabēsu: Tosa Kōji" 棋士データベース: 土佐浩司 [Professional Shogi Player Database: Kōji Tosa] (in Japanese). Japan Shogi Association. Retrieved January 21, 2020.
  3. ↑ "Hayazashi Shōgi Senshuken･Hayazashi Shineisen [Rekidai Yūshōsha Ichiran]" 早指し将棋選手権戦･早指し新鋭戦 [歴代優勝者一覧] [Hayazahi Shogi Senshuken･Hayszashi Shineisen [List of winners]] (in Japanese). Japan Shogi Association. Retrieved January 21, 2020.
  4. ↑ "Tosa Kōji Shichidan Roppyakushō (Shōgi Eiyoshō) wo Tassei" 土佐浩司七段, 600勝 (将棋栄誉賞) を達成！ [Kōji Tosa 7d reaches 600 wins] (in Japanese). Japan Shogi Association. August 9, 2010. Retrieved January 21, 2020.
  5. ↑ "Morishita Kudan ga Tsūsan Happyakusho" 森下九段が通算800勝 [Morishita 9d wins 800th official game]. Asahi Shimbun (in Japanese). August 26, 2010. Retrieved January 21, 2020.
  6. ↑ "Dai Nanajūgonki Meijinsen･Jun'isen Shikumi Nikyū" 第75期名人戦･順位戦 C級2組 [75th Meijin Tournament Class C2] (in Japanese). Japan Shogi Association. 2016. Retrieved January 21, 2020.
  7. ↑ "Nisenjūnananendo kara no Furī Kurasu Tenshutsusha" 2017年度からのフリークラス転出者 [Players Moving to the Free Class from the 2017 Shogi Year] (in Japanese). Japan Shogi Association. March 31, 2017. Retrieved January 21, 2020.
  8. ↑ "Tosa Kōji Hachidan, Itō Hirofumi Shichidan ga Intai" 土佐浩司八段, 伊藤博文七段が引退 [Kōji Tosa 8-dan and Hirofumi Itō 7-dan retire from professional play] (in Japanese). Japan Shogi Association. June 8, 2020. Retrieved June 11, 2020.
  9. ↑ "Kishi Dētabēsu: Tosa Kōji Shōdan Rireki" 棋士データベース: 土佐浩司 昇段履歴 [Professional Shogi Player Database: Kōji Tosa Promotion History] (in Japanese). Japan Shogi Association. Retrieved June 8, 2020.
  10. ↑ "Kishi Dētabēsu: Tosa Kōji Yūshō Rireki" 棋士データベース: 土佐浩司 優勝履歴 [Professional Shogi Player Database: Kōji Tosa Championship History] (in Japanese). Japan Shogi Association. Retrieved January 21, 2020.
  11. ↑ "Kishi Dētabēsu: Tosa Kōji Sonota Hyōshō" 棋士データベース: 土佐浩司 その他表彰 [Professional Shogi Player Database: Kōji Tosa Other Awards] (in Japanese). Japan Shogi Association. Retrieved January 21, 2020.


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