Takuma Oikawa (及川 拓馬, Oikawa Takuma, born May 6, 1987) is a Japanese professional shogi player ranked 7-dan.
[1] He learned how to play shogi from his father when he was about five years old, and developed an interest in solving tsume shogi problems.
[2] He was accepted into the Japan Shogi Association's apprentice school as a student of shogi professional Hatasu Itō [ja] at the rank of 6-kyū in 1998, was promoted to the rank of 1-dan in 2003 and then obtained full professional status and the rank of 4-dan after finishing second in the 41st 3-dan League with a record of 13 wins and 5 losses.
[6] Oikawa is married to female shogi professional Hatsumi Ueda.
[4] The couple were married in June 2013 and have two daughters as of October 2018[update].