Toshiyuki Moriuchi

In March 2017, Moriuchi voluntarily declared himself as a free class player, thus leaving the Meijin tournament league.

Moriuchi was selected to be the senior managing director of the Japan Shogi Association's board of directors for a two-year term at the association's 68th General Meeting on May 29, 2017. In April 2019, he announced that he would not seek re-election when his term expired in June 2019.

In August 2014, he tied for fourth in the 39th Backgammon World Championship held in Monte Carlo.

Moriuchi became the fifteenth shogi professional to win 800 official games when he defeated Yoshiharu Habu in Game 2 of 69th Meijin title match on April 21, 2011.

Moriuchi also plays chess and backgammon. He been playing in chess tournaments since 1998, and his chess Elo score is 2310 (FIDE Master level) as of January 2018.

Moriuchi's first appearance in a major title match was the 54th Meijin Match in June 1996. Moriuchi was promoted to the Class A League for the first time in 1995 and went on to win the league in his first season with a 7–2 record to advance to the title match against Habu. Although both players were the same age and had been rivals since elementary school, Habu was much more establish as a professional and was also a 7-crown title holder (i.e., simultaneously held all seven major titles) at the time. Moriuchi ended up losing the matchi 4–1.

Moriuchi has finished in the "Top 10" of the JSA's year-end prize money and game fee rankings [ja] twenty-one times since 1993, and in the "Top 3" nine of those times.

In 1988, Moriuchi defeated then Meijin Koji Tanigawa 2 games to 1 to win the 7th All Nihon Pro [ja] . The victory was a much discussed through the year in professional shogi circles because Moriuch ranked 4-dan at the time had defeated the reigning Meijin in a match. Tanigawa would get his chance for revenge against Moriuchi in 19th All Nihon Pro Tournament final in 2000, but was defeated 3 games to 2.

In 1987, Moriuchi won his first professional shogi tournament when he defeated Hiroyuki Iida [ja] 2 games to none to win the 18th Shinjin-Ō [ja] , but was unable to repeat as champion the following year when he lost the 19th Shinjin-Ō to Habu 2 games to none in the first match between the two as professionals. Moriuchi would, however, win the tournament again in 1991 (against Taku Morishita, 2–0) and 1993 (against Yasumitsu Satō, 2–1).

In 1982, Moriuchi finished tied for third in the 7th Elementary Student Shogi Meijin Tournament [ja] . Both Moriuchi and Habu advanced to the semi-finals held in Tokyo which were broadcast on television. Moriuchi, however, lost his semi-final game, whereas Habu won his and then subsequently the final to become the "7th Elementary School Shōgi Meijin". That same year, Moriuchi entered the Japan Shogi Association's apprentice school with the rank of 6-kyū as a protegee of shogi professional Osamu Katsūra [ja] . He was awarded professional status and the rank of 4-dan in May 1987.

Toshiyuki Moriuchi (森内 俊之 , Moriuchi Toshiyuki, born October 10, 1970) is a Japanese professional shogi player, ranked 9-dan. He is a Lifetime Meijin who won the title eight times, and also a former Ryūō, Kiō and Ōshō title holder. He is also a former senior managing director of the Japan Shogi Association.

Moriuchi was born on October 10, 1970, in Yokohama. His grandfather was shogi professional Yukio Kyōsu [ja] , who died about ten years before Moriuchi was born. When Moriuchi was young and would visit his grandmother's house, she would show him old issues of Shogi World that she had kept, and this is when Moriuchi first became interested in shogi.