Katsukiyo Kubomatsu was a Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese professional go

Go (board game)

Go , is an ancient board game for two players that originated in China more than 2,000 years ago...

 player

Go players

This page gives an overview of well-known players of the game of Go throughout the ages. The page has been divided into sections based on the era in which the Go players played and the country in which they played. As this was not necessarily their country of birth, a flag of that country precedes...

. Nicknamed the Great Amateur, Kubomatsu was responsible for sending Utaro Hashimoto

Utaro Hashimoto

was a professional Go player.- Biography :Hashimoto became a pro in 1922 when he was 15. He would win the Honinbō 3 times before finally reaching 9p in 1954. He founded the Kansai Ki-in in 1950.- Titles and runner-ups:...

 and Minoru Kitani

Minoru Kitani

was one of the most celebrated professional Go players and teachers of the game of Go in the twentieth century in Japan.- Biography :He earned the nickname "the Prodigy" after winning a knockout tournament. He defeated eight opponents from the Kiseisha in a row during 1928. He played a celebrated...

 to Kensaku Segoe

Kensaku Segoe

was a professional Go player. -Biography:...

 and Tamejiro Suzuki

Tamejiro Suzuki

was a professional 8 dan Go player.-Biography:Suzuki was a pupil of Iwasaki Kenzo from 1894, and later studied under Honinbo Shuei. In 1909, Suzuki defeated Kensaku Segoe in a series of 6 matches, of which he lost 2, and was promoted to the rank of 4 dan in 1912...

 respectively and also taught Nobuaki Maeda

Nobuaki Maeda

Maeda Nobuaki 9 dan was a Japanese professional go player, a disciple of Honinbo Shusai, and a member of the Nihon Ki-in, the main organizational body for go in Japan...

. Kubomatsu was known as one of the earliest innovators of the shin-fuseki, a revolution in Go theory pioneered by his student Minoru Kitani and Go Seigen

Go Seigen

Wu Qingyuan , generally known in the West by his Japanese name Go Seigen, is considered by many players to be the greatest player of the game of Go in the 20th century and of all time.-Biography:...

 in the 1930s. Kubomatsu was known for starting on the tengen, the center point of the board. He was posthumously promoted to 9 dan by the Nihon Ki-in

Nihon Ki-in

The Nihon Ki-in , also known as the Japan Go Association, is the main organizational body for Go in Japan, overseeing Japan's professional system and issuing diplomas for amateur dan rankings. It is based in Tokyo. The other major Go association in Japan is Kansai Ki-in.Nihon Ki-in was established...

 and Kansai Ki-in

Kansai Ki-in

The Kansai Ki-in , i.e., Kansai Go Association, is an organizational body for the game of Go in Japan, which was founded by Hashimoto Utaro in 1950...

in 2009, 67 years after his death.