Sakio Chiba

Sakio Chiba (千葉 幸生) is a Japanese professional shogi player ranked 7-dan.

Early life and apprenticeship
Chiba was born on February 11, 1979, in Machida, Tokyo. He entered the Japan Shogi Association's apprentice school when he was a junior high school ninth-grade student in 1993 under the guidance of shogi professional Shigeru Sekine at the rank of 6-kyū. He was promoted to 1-dan in 1995 and obtained full professional status and the rank of 4-dan in October 2000 after winning the 27th 3-dan league (April 2000 –September 2000).

Promotion history
Chiba's promotion history is as follows:
 * 6-kyū: 1993
 * 1-dan: 1995
 * 4-dan: October 1, 2000
 * 5-dan: April 1, 2004
 * 6-dan: September 16, 2010
 * 7-dan: February 6, 2018

Personal life
Chiba's wife, Ryōko is a female shogi professional. The couple married in May 2003, and have two daughters.