81diver

81diver
Cover of 81diver volume 1 as published by Shueisha
ハチワンダイバー (Hachi Wan Daibā)
Manga
Written by	Yokusaru Shibata
Published by	Shueisha
Demographic	Seinen
Magazine	Weekly Young Jump
Original run	September 7, 2006 – July 17, 2014
Volumes	35
Television drama
Original network	Fuji Television
Original run	May 3, 2008 – July 19, 2009
Episodes	11

81diver (Japanese: ハチワンダイバー, Hepburn: Hachi Wan Daibā^?) is a manga written by Yokusaru Shibata. It was serialized in Weekly Young Jump, published by Shueisha. It is aired as a drama series from May 3, 2008 starring Junpei Mizobata and Riisa Naka. The title refers to the main character's shogi nickname, which comes from the words of his former teacher who once told him to dive into the 9 by 9 (81) squares of the shogi board.

Kentarō failed at entering the professional league of shogi board game competition. However, he continues to play the game for a living by gambling at amateur shogi clubs. His encounter and defeat by the shogi player known as Akihabara's "Ukeshi" shocks him and, combined with his financial crisis, reinvigorates him to take shogi more seriously. He also finds out by chance that the Ukeshi offers a part-time maid cosplay house cleaning service, another side of her which further intrigues him.

None of the video games were released outside Japan.