[1] He learned how to play shogi as a kindergartener from his father, and was the best player in his class as a fifth-grade elementary school student.
Looking for stronger competition, he decided to apply for the Japan Shogi Association's apprentice school.
[2] Tomioka entered the apprentice school at the rank of 6-kyū under the guidance of shogi professional Nobuyuki Ōuchi in November 1978, was promoted to 1-dan in 1981, and finally obtained full professional status and the rank of 4-dan in December 1984.
[3] Tomioka finished the 81st Meijin Ranking League season with a record of 2 wins and 8 losses in Class C2.
He also received the Kōzō Masuda Award in 2016 for his development of the Tomioka Bishop Exchange, Reclining Silver.