As of January 2018, Shimizu’s career record versus male professionals in official games is 29 wins and 156 losses.

In May 2017, Shimizu became the first women to be elected as an executive director to the Japan Shogi Association’s board of directors. She was re-elected to a second two-year term in June 2019.

In November 2016, Shimizu defeated Tomomi Kai in a women’s meijin league game to become the second women’s professional to win 600 official games.

In October 2000, Shimizu became the first women’s professional to be promoted to the rank of women’s 6-dan.

Ichiyo Shimizu (清水 市代 , Shimizu Ichiyo, born January 9, 1969) is a Japanese women’s professional shogi player ranked 7-dan. In May 2017, Shimizu became the first woman to be elected as an executive director to the Japan Shogi Association’s board of directors.

Shimizu was born on January 9, 1969, in Higashimurayama, Tokyo. In 1983, she won the 15th Amateur Women’s Meijin Tournament while she was a junior high school student. That same year, she entered the Japan Shogi Association’s Women’s Professional Apprentice League under the guidance of shogi professional Toshio Takayanagi [ja] . She achieved the rank of women’s professional 2-kyū in April 1985, thus becoming the first apprentice to graduate from the Women’s Professional Apprentice League system.