# Sakio Chiba
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{{Short description|Japanese shogi player}}
{{Infobox shogi professional
|name = Sakio Chiba
|native_name = 千葉幸生
|born = {{birth date and age|1979|2|11|mf=yes}}
|hometown = [Machida, Tokyo](/source/Machida%2C_Tokyo)
|nationality =
|pro_date = {{event date and age|2000|10|01|1979|2|11}}
|badge_no = 237
|teacher = {{ill|Shigeru Sekine|ja|関根茂}}
|teacher_rank = 9-dan
|rank = 7 [dan](/source/dan_(rank))
|meijinclass = C2
|ryuoclass = 5
|jsa = 237
}}
{{nihongo|'''Sakio Chiba'''|千葉 幸生|Chiba Sakio|born February 11, 1979}} is a Japanese [professional shogi player](/source/professional_shogi_player) ranked 7-[dan](/source/Dan_(rank)). He is also an [executive director](/source/Director_(business)) of the [Japan Shogi Association](/source/Japan_Shogi_Association).
==Early life and apprenticeship==
Chiba was born on February 11, 1979, in [Machida, Tokyo](/source/Machida%2C_Tokyo).[{{cite web|url=https://www.shogi.or.jp/player/pro/237.html|script-title=ja:棋士データベース: 千葉幸生|title=Kishi Dētabēsu: Chiba Sakio|language=ja|trans-title=Professional Shogi Player Database: Sakio Chiba|publisher=[Japan Shogi Association](/source/Japan_Shogi_Association)|access-date=May 14, 2019}}] He entered the [Japan Shogi Association](/source/Japan_Shogi_Association)'s [apprentice school](/source/Professional_shogi_player) when he was a [junior high school ninth-grade student](/source/Secondary_education_in_Japan) in 1993 under the guidance of shogi professional {{ill|Shigeru Sekine|ja|関根茂}} at the rank of 6-[kyū](/source/Dan_(rank)).[{{cite book|url=https://books.google.com/books?id=bWVDCwAAQBAJ&pg=PA4|script-title=ja:現役プロ棋士データブック2016 [下] た-わ行|title=Geneki Purō Kishi DētaBukku 2016 [Ge] Ta-Wa Gyō|language=ja|trans-title=2016 Active Shogi Professional Databook [Last volume] Letter "Ta" to letter "Wa"|year=2015|page=4|publisher=MyNabi Publishing/Japan Shogi Association|via=[Google Books](/source/Google_Books)|asin=B019SSNKVA|access-date=May 14, 2019}}] He was promoted to 1-dan in 1995 and obtained [full professional status](/source/Professional_shogi_player) and the rank of 4-dan in October 2000 after winning the 27th [3-dan league](/source/Professional_shogi_player) (April 2000{{sndash}}September 2000).[{{cite web|url=https://www.shogi.or.jp/player/pro/237.html#jsTabE04_02|script-title=ja:棋士データベース: 千葉幸生 昇段履歴|title=Kishi Dētabēsu: Chiba Sakio Shōdan Rireki|language=ja|trans-title=Professional Shogi Player Database: Sakio Chiba Promotion History|publisher=Japan Shogi Association|access-date=May 14, 2019}}]
* 6-[kyū](/source/Dan_(rank)): 1993
* 1-dan: 1995
* 4-dan: October 1, 2000
* 5-dan: April 1, 2004
* 6-dan: September 16, 2010
* 7-dan: February 6, 2018
==JSA director==
Chiba was elected an [executive director](/source/Director_(business)) of the {{abbrv|JSA|Japan Shogi Association}} at its 76th General Meeting in June 2025.[{{cite web|url=https://www.shogi.or.jp/news/2025/06/post_2536.html|script-title=ja:日本将棋連盟新役員のお知らせ|title=Nihon Shōgi Renmei Shiyakuin no Oshirase|language=ja|trans-title=Announcement of New Japan Shogi Association Board Members|date=June 6, 2025|website=Japan Shogi Association|access-date=August 7, 2025}}]
==Personal life==
Chiba's wife, [Ryōko](/source/Ry%C5%8Dko_Chiba) is a [female shogi professional](/source/Professional_shogi_player). The couple married in May 2003,[{{cite news|url=http://www.shogi.or.jp:80/osirase/news/2003-5.html|script-title=ja:千葉四段･碓井女流三段, 結婚へ|title=Chiba Yondan･Usui Joryū Sandan, Kekkon e|language=ja|trans-title=Chiba 4-dan and Women's professional Usui 3-dan announce marriage|date=May 26, 2003|publisher=Japan Shogi Association|url-status=dead|archive-url=https://web.archive.org/web/20030606184123/http://www.shogi.or.jp/osirase/news/2003-5.html|archive-date=June 6, 2003|access-date=February 16, 2018}}] and have two daughters.