Yoshiyuki KubotaYoshiyuki Kubota is a Japanese professional shogi player, ranked 7-dan.WWW shimousadainagon.moe-nift...𝕏 YoshiyukiKubotaEarly life, amateur shogi and apprentice professionalYoshiyuki Kubota was born in Adachi, Tokyo on May 18, 1972. In 1984, he won the 9th, and later that same year entered the Japan Shogi Association's apprentice school at the rank of 6-kyū under the guidance of shogi professional. He was promoted to 1-dan in 1988, and full professional status and the rank of 4-dan in April 1994.Shogi pprofessionalPromotion historyThe promotion history for Kubota is as follows: 6-kyū: 1984 1-dan: 1988 4-dan: April 1, 1994 5-dan: August 1, 1998 6-dan: January 22, 2007 7-dan: June 1, 2016