[1][3] He was promoted to 1-dan in 1985, and was awarded full professional status and the rank of 4-dan in October 1987.
[4][5] Nakagawa received the JSA's "Shogi Honor Fighting-spirit Award" in December 2011 for winning 600 official games as a professional.
[6][7] Nakagawa has served on the Japan Shogi Association's board of directors on multiple occasions.
[10] In May 2011, Nakagawa was selected to be an executive director at the JSA's 62nd General Meeting,[11] but resigned his position for personal reasons in December of that same year.
[13] He was re-elected to the same position in 2015,[14] but was one of three members of the board voted out of office by the JSA membership at an emergency meeting held in February 2017 for their involvement in the 29th Ryūō challenger controversy.