The 31st Kisei is a go tournament held from May 2006 to March 22, 2007. The following players earned spots through not being eliminated in the group stage: Satoshi Yuki (5-0), Tomoyasu Mimura (3-2), Kato Atsushi (3-2), Kobayashi Satoru (3-2), Komatsu Hideki (3-2), Norimoto Yoda (2-3), and O Rissei (2-3). Cho U, Kunihisa Honda, O Meien, and Toshiya Imamura were eliminated from group play and had to earn a spot through preliminary stages. The players to have qualified through preliminary tournaments are Cho U, Kunihisa Honda, Cho Chikun, and Toshiya Imamura. Naoki Hane, the loser of the 30th Kisei takes the place of holder Keigo Yamashita in the group stage. Players who end with the two lowest records in the each league are eliminated from automatic berth into the next tournament while the 3 other players who were not eliminated or had the top record are given a place in the following years groups.

Keigo Yamashita swept his opponent for the second time in as many years.

Preliminaries

edit

Group A

edit
 
Quarter-finalsSemi-finalsFinal
 
          
 
 
 
 
Tetsuya Kiyonari 9 dan0
 
 
 
Yuta Iyama 7 dan1
 
Yuta Iyama 7 dan1
 
 
 
Kimio Yamada 9 dan0
 
Kimio Yamada 9 dan1
 
 
 
Susumu Fukui 9 dan0
 
Yuta Iyama 7 dan0
 
 
 
Cho U Meijin1
 
Tetsuya Mitani 3 dan0
 
 
 
Yoshio Ueki 8 dan1
 
Yoshio Ueki 8 dan0
 
 
 
Cho U Meijin1
 
Hikosaka Naoto 9 dan0
 
 
Cho U Meijin1
 

Group B

edit
 
Quarter-finalsSemi-finalsFinal
 
          
 
 
 
 
Hideki Matsuoka 8 dan0
 
 
 
Hideyuki Sakai 7 dan1
 
Hideyuki Sakai 7 dan0
 
 
 
Masaharu Sato 9 dan1
 
Takuji Yamada 7 dan0
 
 
 
Masaharu Sato 9 dan1
 
Masaharu Sato 9 dan0
 
 
 
Kunihisa Honda 9 dan1
 
Katsunori Yanaka 8 dan0
 
 
 
Yasumasa Hane 9 dan1
 
Yasumasa Hane 9 dan0
 
 
 
Kunihisa Honda 9 dan1
 
Shuzo Awaji 9 dan0
 
 
Kunihisa Honda 9 dan1
 

Group C

edit
 
Quarter-finalsSemi-finalsFinal
 
          
 
 
 
 
Michihiro Morita 9 dan1
 
 
 
Shinichi Aoki 9 dan0
 
Michihiro Morita 9 dan1
 
 
 
Norio Kudo 9 dan0
 
Taiki Seto 6 dan0
 
 
 
Norio Kudo 9 dan1
 
Michihiro Morita 9 dan0
 
 
 
Cho Chikun Judan1
 
Masaki Hoshino 8 dan1
 
 
 
Masaki Takemiya 9 dan0
 
Masaki Hoshino 8 dan0
 
 
 
Cho Chikun Judan1
 
Cho Chikun Judan1
 
 
O Meien 9 dan0
 

Group D

edit
 
Quarter-finalsSemi-finalsFinal
 
          
 
 
 
 
Hiroshi Yamashiro 9 dan0
 
 
 
Yoshiaki Imamura 8 dan1
 
Yoshiaki Imamura 8 dan1
 
 
 
Hideki Takano 6 dan0
 
Ei Kandei 9 dan0
 
 
 
Hideki Takano 6 dan1
 
Yoshiaki Imamura 8 dan0
 
 
 
Toshiya Imamura 9 dan1
 
Kim Shushun 7 dan0
 
 
 
Tomochika Mizokami
8 dan
1
 
Tomochika Mizokami 8 dan0
 
 
 
Toshiya Imamura 9 dan1
 
Hiroyuki Hiroe 9 dan0
 
 
Toshiya Imamura 9 dan1
 

Main tournament

edit

Group A

edit
Player N.H. T.M. K.H. N.Y. C.U. H.K. T
Naoki Hane 9 dan X W+R W+0.5 L+R W+R W+R 4-1*
Mimura Tomoyasu 9 dan L+R X L+R W+2.5 L+R L+5.5 1-4
Hideki Komatsu 9 dan L+0.5 W+R X W+2.5 L+R L+R 2-3
Norimoto Yoda 9 dan W+R L+2.5 L+2.5 X L+1.5 W+R 2-3
Cho U Gosei L+R W+R W+R W+1.5 X W+R 4-1
Kunihisa Honda 9 dan L+R W+5.5 W+R L+R L+R X 2-3**

* Naoki Hane held the tiebreaker over Cho U.

** Hideki Komatsu and Norimoto Yoda held tiebreakers over Kunihisa Honda.

Group B

edit
Player S.Y. S.K. K.A. O.R. C.C. T.I. T
Satoshi Yuki 9 dan X L+R L+2.5 L+0.5 W+R L+R 1-4
Satoru Kobayashi 9 dan W+R X L+R W+R W+R W+0.5 4-1***
Atsushi Kato 8 dan W+2.5 W+R X W+3.5 L+8.5 W+5.5 4-1
O Rissei 9 dan W+0.5 L+R L+3.5 X W+R W+13.5 3-2
Cho Chikun Judan L+R L+R W+8.5 L+R X L+R 1-4
Toshiya Imamura 9 dan W+R L+0.5 L+5.5 L+13.5 W+R X 2-3

*** Satoru Kobayashi held the tiebreaker over Atsushi Kato.

Key:

  • Green - Winner of group; earns a spot in the challenger final.
  • Blue - Earns a place in the next edition's group stage.
  • Red - Eliminated from automatic berth; must qualify through preliminary stages.

Challenger finals

edit
Final
   
Naoki Hane 9 dan 0
Satoru Kobayashi 9 dan 1

Finals

edit
Player
4
(Toyama)
5
(Aichi)
6
(Sunto)
T
Keigo Yamashita (Kisei) B+R W+R B+R W+R 4
Kobayashi Satoru (Challenger) 0

Key

  • W+ - Won by
  • R - Resignation