Torahiko Tanaka
Torahiko Tanaka is a Japanese retired professional shogi player who achieved the rank of 9-dan. He is also a former Kisei title holder and a former senior managing director of the Japan Shogi Association.
Early life and apprenticeship
Tanaka was born on April 29, 1957, in Toyonaka, Osaka. In 1971, he entered the Japan Shogi Association's apprentice school at the rank of 6-kyū under guidance of shogi professional. He was promoted to the 1-dan in May 1974, and obtained professional status and the rank of 4-dan in June 1976.Shogi professional
Tanaka's first championship as a professional came in 1981 when he defeated to 2 games to none to win the 12th Shinjin-Ō. He also won the 1st, the 5th, the 34th NHK Cup, the 17th and the 20th .Tanaka's first appearance in a major title match came in the Spring of 1988 when he challenged Yoshikazu Minami for the 52nd Kisei title; Tanaka won the match 3 games to 2 for his only major title. The following autumn he was unable to defend his title against Makoto Nakahara, losing the 53rd Kisei title match by the same score.
Tanaka retired from professional shogi on April 15, 2022. He finished his career with a record of 794 wins and 783 losses.
Theoretical contributions
Tanaka earned the nickname "Edison of the opening", in reference to inventor Thomas Edison, for his innovations in the opening part of the game.He helped popularize the Bear-in-the-hole castle as a castle for Counter-Ranging Rook Static Rook positions. At the time, the Bear-in-the-hole was used primarily for Ranging Rook positions.
The diagram below shows Tanaka using Static Rook position with an Incomplete Bear-in-the-hole castle in an October 1976 professional match. His opponent Daigorō Satō is using a Third File Rook.
Promotion history
Tanaka's promotion history was as follows.- 1972: 6-kyū
- 1974: 1-dan
- 1976, June 4: 4-dan
- 1981, April 1: 5-dan
- 1982, April 1: 6-dan
- 1983, April 1: 7-dan
- 1984, April 1: 8-dan
- 1994, December 16: 9-dan