Katsuhiko Murookais a Japanese retired professional shogi player who achieved the rank of 8-dan.𝕏 murooka1Shogi professionalIn April 2024, the posted on its official website that Murooka had met the requirements for mandatory retirement for "Free Class" players and that his retirement would become official upon completion of his last scheduled official game of his current playing schedule. On June 19, 2024, the JSA announced that Murooka's retirement became official the prior day after his loss to Reo Okabe in a 37th Ryūō Group 6 game. Murooka finished his career with a record of 454 wins and 642 losses for a winning percentage of 0.414.Promotion historyMurooka's promotion history is as follows: 6-kyū: 1973 1-dan: 1977 4-dan: December 16, 1981 5-dan: April 1, 1985 6-dan: May 22, 1989 7-dan: May 30, 1997 8-dan: April 1, 2023 Retired: June 18, 2024