49th Judan-sen

Host Organization : Sankei Shimbun
Title match
Players 1st round
03-03
Higashiosaka
Osaka
2nd round
03-24
Chiyoda
Tokyo
3rd round
04-07
Omachi
Nagano
4th round
04-22
Chiyoda
Tokyo
5th round
04-29
Chiyoda
Tokyo
Cho U (Judan) B+R   B+R    
Iyama Yuta (Meijin)   B+R   B+3.5 B+R
Iyama Yuta got the title by 3-2.
The win-loss records; Cho U 17-13 Iyama Yuta.
50th Judan the last preliminary tournament

Tournament table
Players1st round2nd roundSemifinalsWinner's finalChallenger
decision
match
Anzai Nobuaki(6d)Anzai N
W+3.5
06-03
Anzai N
W+R
08-12
Yamashita K
W+R
09-04
Iyama Y
B+0.5
09-27
Iyama Y
W+R
02-10
Shuto Shun(7d)
Akiyama Jiro(8d)Cho Chikun
W+8.5
06-17
Cho Chikun(25H)
O Rissei(9d)Ri Ishu
W+R
06-17
Yamashita K
B+R
07-29
Ri Ishu(7d)
Yamashita Keigo(H)Yamashita K
B+R
06-03
Sakai Hideyuki(G)
Iyama Yuta(M)Iyama Y
B+R
07-01
Iyama Y
B+R
07-22
Iyama Y
W+R
08-12
Kono Rin(9d)
Yamashiro Hiroshi(9d)Hane N
B+1.5
05-20
Hane Naoki(9d)
Takao Shinji(9d)So Yokoku
W+R
05-20
Ko Iso
Default
07-22
So Yokoku(8d)
Ko Iso(7d)Ko Iso
B+R
05-27
Kurahashi Masayuki(9d)
--- upper; winner's tournament / lower; loser's tournament ---
Shuto SAkiyama J
B+0.5
07-29
Akiyama J
B+0.5
09-16
Takao S
W+R
10-28
Takao S
W+R
12-16
Takao S
W+R
01-20
Akiyama J
O RisseiSakai H
B+0.5
08-09
Sakai H
Kono RKono R
B+R
08-05
Takao S
B+4.5
08-19
Yamashiro H
Takao STakao S
B+R
07-08
Kurahashi M
Yamashita K
Cho ChikunCho Chikun
B+R
09-02
Cho Chikun
W+2.5
10-14
Ko Iso
W+R
11-04
Ri Ishu
Hane NHane N
W+0.5
08-26
So Yokoku
Anzai NKo Iso
B+2.5
10-14
Ko Iso
Players1st round2nd round3rd roundSemifinalsLosser's finalChallenger
decision
match

Note;
  (M); Meijin  (H); Honinbo  (G); Gosei  (25H); 25th Honinbo

History;
  2010-05-14 Page was recreated.
  2010-05-21,28 Updated.
  2010-06-04,11,18,25 Updated.
  2010-07-02,09,17,23,30 Updated.
  2010-08-06,13,20,27 Updated.
  2010-09-03,10,17,24 Updated.
  2010-10-01,08,15,22,29 Updated.
  2010-11-05 Updated.
  2010-12-10,17 Updated.
  2011-01-14,21 Updated.
  2011-02-04,10 Updated.
  2011-03-04,24 Updated.
  2011-04-07,22,29 Updated.

The last preliminary tournament
Players1st round Final 
Kobayashi Satoru(9d)Tsuruyama A
B+R
03-18
Kurahashi M
B+0.5
04-08
Tsuruyama Atsushi(6d)
Kenmochi Jyo(7d)Kurahashi M
B+R
03-18
Kurahashi Masayuki(9d)
Shimojima Yohei(7d)Han Zenki
B+8.5
03-25
Yamashiro H
B+2.5
04-29
Han Zenki(7d)
Yamashiro Hiroshi(9d)Yamashiro H
W+6.5
03-11
Yoda Norimoto(9d)
Kobayashi Koichi(9d)Nakamura S
W+4.5
03-18
Sakai H
W+R
05-27
Nakamura Shinya(8d)
Sakai Hideyuki(7d)Sakai H
B+6.5
04-29
Nakane Naoyuki(8d)
Anzai Nobuaki(6d)Anzai N
B+1.5
03-22
Anzai N
B+R
04-29
Yuki Satoshi(9d)
Sasaka Shiro(8d)Hikosaka N
W+R
03-18
Hikosaka Naoto(9d)
Iyama Yuta(M)Iyama Y
B+1.5
03-25
Iyama Y
W+R
04-08
Mochizuki Kenichi(7d)
Shiraishi Yuichi(3d)Murakawa D
B+R
03-18
Murakawa Daisuke(5d)
Yamada Kimio(9d)Yamada K
W+R
03-25
Ko Iso
W+R
04-15
Ishida Atsushi(9d)
Ko Iso(7d)Ko Iso
B+R
03-18
Komatsu Hideki(9d)
Chin Kaei(9d)Chin Kaei
B+R
04-01
Hane N
B+R
04-22
O Meien(9d)
Hane Naoki(H)Hane N
W+6.5
03-25
Yanaka Katsunori(8d)
Rin Kanketsu(7d)Kono R
W+0.5
03-25
Kono R
B+2.5
05-13
Kono Rin(9d)
Yukawa Mitsuhisa(9d)Oya K
B+13.5
04-01
Oya Koichi(9d)Oya K
W+R
03-11
Takagi Shoichi(9d)
Note;
  (M); Meijin  (H); Honinbo

History;
  2010-03-05 Page was recreated.
  2010-03-12,19,26 Updated.
  2010-04-02,09,16,23,30 Updated.
  2010-05-07,14,21,27 Updated.

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48th Judan-sen

Host Organization : Sankei Shimbun
Title match
Players 1st round
03-04
Nigata
Nigata
2nd round
03-25
Chiyoda
Tokyo
3rd round
04-08
Omachi
Nakano
4th round
04-23
Chiyoda
Tokyo
5th round
04-30
Chiyoda
Tokyo
Cho U (Judan) B+R W+1.5 B+R    
Yamashita Keigo (Tengen)          
Cho U kept the title by 3-0.
The win-loss records; Cho U 34-22 Yamashita Keigo.

Tournament table
Players1st round2nd roundSemifinalsWinner's finalChallenger
decision
match
O Meien(9d)O Meien
B+R
05-14
Ri Ishu
B+2.5
07-23
Takao S
B+R
09-10
Takao S
B+10.5
10-15
Yamashita K
B+R
01-21
Tsuruyama Atsushi(6d)
Yamada Kimio(9d)Ri Ishu
W+1.5
05-28
Ri Ishu(7d)
Takao Shinji(9d)Takao S
B+R
05-21
Takao S
W+R
08-20
Nakamura Shinya(8d)
Cho Chikun(25H)So Yokoku
W+R
05-28
So Yokoku(8d)
Shuto Shun(6d)Shuto S
W+R
05-28
Akiyama J
W+R
07-16
O Rissei
B+R
09-24
Hikosaka Naoto(9d)
Iyama Yuta(M)Akiyama J
W+0.5
06-18
Akiyama Jiro(8d)
Yamashita Keigo(K)O Rissei
B+R
05-14
O Rissei
B+R
08-13
O Rissei(9d)
Yamashiro Hiroshi(9d)Ko Iso
B+4.5
05-21
Ko Iso(7d)
--- upper; winner's tournament / lower; loser's tournament ---
Tsuruyama ATsuruyama A
W+4.5
07-09
Cho Chikun
W+R
07-30
Yamashita K
W+R
09-24
Yamashita K
B+R
11-05
Yamashita K
B+R
12-25
Yamada K
Nakamura SCho Chikun
W+R
06-25
Cho Chikun
Hikosaka NHikosaka N
W+R
07-16
Yamashita K
W+R
08-27
Iyama Y
Yamashita KYamashita K
B+R
06-18
Yamashiro H
O Rissei
O MeienSo Yokoku
B+1.5
09-17
Shuto S
B+R
10-08
Ri Ishu
W+0.5
11-05
So Yokoku
Shuto SShuto S
W+6.5
09-03
Ko Iso
Ri IshuRi Ishu
W+0.5
10-15
Akiyama J
Players1st round2nd round3rd roundSemifinalsLosser's finalChallenger
decision
match

Note;
  (K); Kisei  (M); Meijin  (25H); 25th Honinbo

History;
  2009-05-01 Page was recreated.
  2009-05-08,15,22,29 Updated.
  2009-06-12,19,26 Updated.
  2009-07-03,10,17,24,31 Updated.
  2009-08-07,14,21,28 Updated.
  2009-09-04,11,18,25 Updated.
  2009-10-02,09,16,30 Updated.
  2009-11-06 Updated.
  2009-12-25 Updated.
  2010-01-15,21 Updated.
  2010-03-04,25 Updated.
  2010-04-08 Updated.

The last preliminary tournament
Players1st round Final 
Hikosaka Naoto(9d)Hikosaka N
B+R
03-12
Hikosaka N
W+3.5
04-23
Rin Shien(7d)
Komatsu Hideki(9d)Oya K
B+5.5
03-19
Oya Koichi(9d)
Takagi Shoichi(9d)Ishida A
W+1.5
02-26
O Meien
B+R
04-16
Ishida Atsushi(9d)
O Meien(9d)O Meien
W+R
03-26
Kurahashi Masayuki(9d)
Kataoka Satoshi(9d)Kataoka S
B+8.5
03-05
Yamashita K
B+R
04-23
Takano Hideki(7d)
Murakawa Daisuke(5d)Yamashita K
B+R
03-26
Yamashita Keigo(K)
Yasuda Yasutoshi(9d)Arakaki S
W+3.5
03-05
Ri Ishu
B+R
03-26
Arakaki Shun(8d)
Anzai Nobuaki(6d)Ri Ishu
B+6.5
03-05
Ri Ishu(7d)
Tsuruyama Atsushi(6d)Tsuruyama A
W+R
03-12
Tsuruyama A
B+R
04-02
Kono Rin(9d)
Ishii Kunio(9d)Hane N
B+R
03-05
Hane Naoki(H)
Yamada Kimio(9d)Yamada K
W+2.5
03-19
Yamada K
B+R
04-09
Honda Kunihisa(9d)
Morita Michihiro(9d)Han Zenki
W+R
02-19
Han Zenki(7d)
Shuto Shun(6d)Shuto S
B+R
03-16
Shuto S
W+R
04-09
Sakai Hideyuki(7d)
Mochizuki Kenichi(6d)Kamimura H
B+1.5
02-19
Kamimura Haruo(9d)
Rin Kanketsu(6d)O Rissei
B+R
03-05
O Rissei
W+R
04-16
O Rissei(9d)
Ishida Akira(9d)Ishida A
W+R
03-26
Yata Naoki(9d)Kobayashi S
B+R
02-26
Kobayashi Satoru(9d)
Note;
  (K); Kisei  (H); Honinbo

History;
  2009-02-13 Page was recreated.
  2009-02-20,27 Updated.
  2009-03-06,13,20,27 Updated.
  2009-04-03,10,17,24 Updated.

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47th Judan-sen

Host Organization : Sankei Shimbun
Title match
Players 1st round
03-05
Chiyoda
Tokyo
2nd round
03-18
Nigata
Nigata
3rd round
04-09
Omachi
Nagano
4th round
04-16
Gamagori
Aichi
5th round
04-24
Chiyoda
Tokyo
Takao Shinji (Judan) B+2.5        
Cho U (Meijin)   B+4.5 W+R B+R  
Cho U got the title by 3-1.
The win-loss records; Takao Shinji 20-21 Cho U.

Tournament table
Players1st round2nd roundSemifinalsWinner's finalChallenger
decision
match
So Yokoku(8d)So Yokoku
W+R
06-05
So Yokoku
W+R
07-10
Cho Chikun
W+1.5
08-14
Cho U
W+5.5
10-23
Cho U
B+R
01-29
Yasuda Yasutoshi(9d)
Kobayashi Satoru(9d)Komatsu H
W+3.5
05-15
Komatsu Hideki(9d)
Yamashiro Hiroshi(9d)Cho Chikun
W+R
06-16
Cho Chikun
W+R
07-17
Cho Chikun(25H)
Kono Rin(9d)Iyama Y
W+R
05-15
Iyama Yuta(8d)
Anzai Nobuaki(5d)Akiyama J
W+9.5
05-29
Akiyama J
B+R
07-03
Cho U
W+8.5
09-21
Akiyama Jiro(8d)
O Rissei(9d)Mochizuki K
W+R
05-22
Mochizuki Kenichi(6d)
Ko Iso(7d)Cho U
B+R
05-22
Cho U
W+R
07-03
Cho U(M)
Nakamura Shinya(8d)Nakamura S
B+R
05-15
Shuto Shun(6d)
--- upper; winner's tournament / lower; loser's tournament ---
Yasuda YKobayashi S
B+6.5
07-17
Yamashiro H
B+R
08-07
Ko Iso
B+R
09-18
Ko Iso
B+2.5
11-27
Ko Iso
B+R
01-08
Kobayashi S
Yamashiro HYamashiro H
W+0.5
07-17
Kono R
Anzai NAnzai N
W+2.5
07-03
Ko Iso
B+R
08-21
O Rissei
Ko IsoKo Iso
B+R
07-10
Shuto S
Cho Chikun
Komatsu HIyama Y
B+R
08-21
Iyama Y
B+R
11-13
Akiyama J
B+R
12-11
Iyama Y
Mochizuki KNakamura S
W+R
08-14
Nakamura S
So YokokuAkiyama J
B+R
11-20
Akiyama J
Players1st round2nd round3rd roundSemifinalsLosser's finalChallenger
decision
match

Note;
  (M); Meijin  (25H); 25th Honinbo

History;
  2008-05-01 Page was recreated.
  2008-05-09,16,23,30 Updated.
  2008-06-06,13,20,27 Updated.
  2008-07-04,11,18 Updated.
  2008-08-01,08,15,22 Updated.
  2008-09-12,19,26 Updated.
  2008-10-17,24 Updated.
  2008-11-07,14,21,28 Updated.
  2008-12-05,12,26 Updated.
  2009-01-09,23,29 Updated.
  2009-03-05,18 Updated.
  2009-04-09,16 Updated.

The last preliminary tournament
Players1st round Final 
Mizokami Tomochika(8d)Tsuruyama A
W+2.5
03-13
Mochizuki K
B+R
04-03
Tsuruyama Atsushi(6d)
Mochizuki Kenichi(6d)Mochizuki K
B+R
02-21
Chin Kaei(9d)
Hatanaka Hoshinobu(1d)Yamashita K
B+R
04-10
Yamashiro H
B+1.5
04-24
Yamashita Keigo(K)
Nakano Hironari(9d)Yamashiro H
B+1.5
02-21
Yamashiro Hiroshi(9d)
Morita Michihiro(9d)Morita M
B+R
04-03
Ko Iso
W+R
05-08
Yokota Shigeaki(9d)
Goto Shungo(9d)Ko Iso
B+R
03-06
Ko Iso(7d)
Yamada Kimio(9d)Hikosaka N
B+R
02-14
O Rissei
B+R
04-03
Hikosaka Naoto(9d)
Yamada Noriyoshi(9d)O Rissei
B+1.5
02-28
O Rissei(9d)
Yasuda Yasutoshi(9d)Yasuda Y
W+R
02-28
Yasuda Y
B+R
03-20
Miyazawa Goro(9d)
Yukawa Mitsuhisa(9d)Takano H
B+R
02-28
Takano Hideki(7d)
Sasaka Shiro(8d)Nakaonoda T
W+4.5
02-21
Iyama Y
B+R
04-09
Nakaonoda Tomomi(9d)
Iyama Yuta(7d)Iyama Y
B+R
03-13
Kobayashi Koichi(9d)
Anzai Nobuaki(5d)Anzai N
B+0.5
03-10
Anzai N
B+R
03-27
Yoda Norimoto(9d)
Nakano Yasuhiro(9d)Ko Reibun
B+R
02-21
Ko Reibun(6d)
Kato Atsushi(8d)Kato A
W+4.5
03-06
Akiyama J
W+4.5
03-27
Imamura Toshiya(9d)
Kono Mitsuki(7d)Akiyama J
W+R
02-21
Akiyama Jiro(8d)
Note;
  (K); Kisei

History;
  2008-02-08 Page was recreated.
  2008-02-15,22,29 Updated.
  2008-03-07,14,21,28 Updated.
  2008-04-04,11,18,25 Updated.
  2008-05-02,09 Updated.

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46th Judan-sen

Host Organization : Sankei Shimbun
Title match
Players 1st round
03-06
Nigata
Nigata
2nd round
03-27
Gamagori
Aichi
3rd round
04-03
Omachi
Nagano
4th round
04-17
Matsuyama
Ehime
5th round
04-25
Chiyoda
Tokyo
Cho Chikun (Judan)          
Takao Shinji (Honinbo) B+R W+R B+R    
Takao Shinji got the title by 3-0.
The win-loss records; Cho Chikun 3-6 Takao Shinji.

Tournament table
Players1st round2nd roundSemifinalsWinner's finalChallenger
decision
match
Kobayashi Koichi(9d)Kobayashi K
B+R
05-24
Takao S
B+4.5
08-09
Takao S
B+R
08-30
Cho U
W+R
10-01
Takao S
W+6.5
02-07
Shuto Shun(5d)
Takao Shinji(H)Takao S
B+R
05-17
Yamashita Keigo(K)
O Rissei(9d)Komatsu H
W+R
06-28
Komatsu H
B+R
07-26
Komatsu Hideki(9d)
Yamashiro Hiroshi(9d)Kono R
B+R
05-31
Kono Rin(T)
Kobayashi Satoru(9d)Kobayashi S
W+R
07-05
So Yokoku
W+R
07-26
Cho U
B+R
08-27
Yamada Kimio(9d)
Mochizuki Kenichi(6d)So Yokoku
W+R
06-14
So Yokoku(8d)
Yoda Norimoto(9d)Yoda N
B+2.5
05-17
Cho U
B+4.5
07-23
Yukawa Mitsuhisa(9d)
Cho U(M)Cho U
W+R
05-28
Nakamura Shinya(8d)
--- upper; winner's tournament / lower; loser's tournament ---
Shuto SShuto S
B+9.5
08-09
Shuto S
W+3.5
09-06
Nakamura S
W+R
10-18
Takao S
W+R
11-22
Takao S
B+R
01-17
Yamashita K
O RisseiYamashiro H
W+4.5
08-09
Yamashiro H
Yamada KMochizuki K
B+R
08-09
Nakamura S
B+R
08-30
Mochizuki K
Yukawa MNakamura S
B+3.5
06-28
Nakamura S
Takao S
Kobayashi KKono R
W+3.5
08-30
Kono R
B+R
09-13
Kono R
B+R
11-29
Kono R
Kobayashi SKobayashi S
W+0.5
08-16
Yoda N
Komatsu HKomatsu H
B+R
10-18
So Yokoku
Players1st round2nd round3rd roundSemifinalsLosser's finalChallenger
decision
match

Note;
  (K); Kisei  (M); Meijin  (H); Honinbo  (T); Tengen

History;
  2007-05-16 Page was recreated.
  2007-05-18,25 Updated.
  2007-06-01,08,15,22,29 Updated.
  2007-07-06,20,27 Updated.
  2007-08-03,10,17,24,31 Updated.
  2007-09-08,14,28 Updated.
  2007-10-05,12,19 Updated.
  2007-11-16,23,30 Updated.
  2008-01-11,18 Updated.
  2008-02-01,07 Updated.
  2008-03-06,27 Updated.
  2008-04-03 Updated.

The last primary tournament
Players1st round  Final  
Mochizuki Kenichi(6d)Mochizuki K
W+R
03-01
Mochizuki K
B+R
03-29
Rin Kanketsu(6d)
Yamada Noriyoshi(9d)Kim Sujun
W+R
02-22
Kim Sujun(9d)
Rin Kaiho(HT)Ogaki Y
B+R
02-22
Shuto S
W+R
04-12
Ogaki Yusaku(9d)
Shuto Shun(5d)Shuto S
B+R
03-22
Hashimoto Yujiro(9d)
Kono Rin(T)Kono R
B+R
03-22
Kono R
W+R
04-26
Mimura Tomoyasu(9d)
Tsuruyama Atsushi(6d)Nakano Y
B+8.5
02-22
Nakano Yasuhiro(9d)
Tei Meiko(9d)Anzai N
B+R
03-01
O Rissei
B+R
03-22
Anzai Nobuaki(4d)
O Rissei(9d)O Rissei
W+0.5
02-15
Iyama Yuta(7d)
Otake Hideo(HG)Yukawa M
W+R
03-01
Yukawa M
B+1.5
03-22
Yukawa Mitsuhisa(9d)
Nakano Hironari(9d)O Meien
B+2.5
03-01
O Meien(9d)
Honda Kunihisa(9d)Honda K
W+0.5
03-15
Nakamura S
B+R
05-03
Cho Sonjin(9d)
Nakamura Shinya(8d)Nakamura S
B+2.5
03-22
Shimojima Yohei(7d)
Kudo Norio(9d)Kudo N
W+R
02-22
So Yokoku
W+R
05-24
Hane Naoki(9d)
So Yokoku(8d)So Yokoku
W+R
05-07
Yuki Satoshi(9d)
Sakai Takeshi(9d)Sakai T
W+R
03-22
Kobayashi K
W+R
04-19
Goto Shungo(9d)
Kobayashi Koichi(9d)Kobayashi K
W+0.5
02-22
Kobayashi K
B+5.5
03-15
Ishikura Noboru(9d)
Ha Youngil(4d)
Note;
  (T); Tengen  (HT); Honorary Tengen  (HG); Honorary Gosei

History;
  2007-02-07 Page was recreated.
  2007-02-09,16,23 Updated.
  2007-03-02,09,16,23,30 Updated.
  2007-04-06,13,20,27 Updated.
  2007-05-04,18,25 Updated.

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45th Judan-sen

Host Organization: Sankei Shimbun
Title match
Players 1st round
03-08
Nigata
Nigata
2nd round
03-29
Gamagori
Aichi
3rd round
04-05
Omachi
Nagano
4th round
04-19
Matsuyama
Ehime
5th round
04-25
Chiyoda
Tokyo
Cho Chikun (Judan) W+R B+2.5     B+3.5
Yamashita Keigo (Kisei)     B+R W+R  
Cho Chikun kept the title by 3-2.
The win-loss records; Cho Chikun 7-11 Yamashita Keigo.

History;
  2007-03-08,29 Updated.
  2007-04-06,19,25 Updated.

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