Kentarō Ishii

is a Japanese professional shogi player ranked 7-dan.

Early life and apprenticeship Ishii was born on April 13, 1992, in Chiba, Chiba. He became interested in shogi after receiving a shogi set as a present from his grandfather, and started attending a shogi school run by shogi professional Kazuharu Shoshi as a kindergartener. Ishii failed the entrance examination for the Japan Shogi Association's apprentice school twice before finally passing it and being accepted into the school at the rank of 6-kyū in 2004 under the guidance of Shoshi.

Shogi professional Promotion history Ishii's promotion history is as follows: 6-kyū: September 2004 3-dan: April 2010 4-dan: October 1, 2013 5-dan: October 30, 2017 6-dan: June 5, 2020 7-dan: March 6, 2024