is a Japanese
professional shogi player
A professional shogi player (将棋棋士 ''shōgi kishi'' or プロ棋士 ''puro kishi'' "professional player") is a shogi player who is usually a member of a professional guild of shogi players.
There are two categories of professional player ...
ranked 5-
dan
Dan or DAN may refer to:
People
* Dan (name), including a list of people with the name
** Dan (king), several kings of Denmark
* Dan people, an ethnic group located in West Africa
**Dan language, a Mande language spoken primarily in Côte d'Ivoir ...
.
Early life and education
Koga was born in
Fukuoka
is the sixth-largest city in Japan, the second-largest port city after Yokohama, and the capital city of Fukuoka Prefecture, Japan. The city is built along the shores of Hakata Bay, and has been a center of international commerce since ancie ...
, Japan on February 13, 1996. He learned how to play shogi from his grandfather when he was about four years old.
Shogi
Apprentice professional
Koga entered the
Japan Shogi Association
The , or JSA, is the primary organizing body for professional shogi in Japan. The JSA sets the professional calendar, negotiates sponsorship and media promotion deals, helps organize tournaments and title matches, publishes shogi-related materia ...
's
apprentice school in September 2011 as a protegee of shogi professional
Isao Nakata.
He was promoted to the rank of apprentice professional 3-dan in April 2017 and obtained
full professional status and the
rank of 4-dan after finishing third in the 67th
3-dan League (April 2020September 2020) with a record of 13 wins and 5 losses.
Although Koga's third place finish was not sufficient to earn him direct promotion to 4-dan, it was good enough to earn him a second
promotion point which gave him the option to enter the professional ranks as a
free class player. After consulting with his mentor Nakata, Koga decided he wanted to turn professional even if it meant starting in the Free Class.
Regular professional
In September 2021, Koga was promoted to
Meijin Class C2 after defeating
Hirotaka Kajiura
is a Japanese professional shogi player ranked 7-dan.
Early life
Kajiura was born in the Shinjuku ward of Tokyo, Japan on July 6, 1995. He learned how to play shogi from his father when he was about five years old, and eventually entered the J ...
7-dan to reach the finals of the 52nd tournament. Koga's victory meant that he satisfied the criteria for promotion to Class C2 for the 80th Meijin League (April 2022March 2023).
Promotion history
The
promotion history for Koga is as follows.
*6-
kyū
is a Japanese term used in modern martial arts as well as in tea ceremony, flower arranging, Go, shogi, academic tests and other similar activities to designate various grades, levels or degrees of proficiency or experience. In Mandarin Chin ...
: September 2011
*3-dan: April 2017
*4-dan: October 1, 2020
*5-dan: March 14, 2023
Notes
References
External links
* ShogiHub
Professional Player Info · Koga, Yusei
Living people
2001 births
Japanese shogi players
People from Fukuoka
Professional shogi players from Fukuoka Prefecture
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