Games Between Two Players
O Rissei (39 win; 40 loss) vs. Cho Chikun
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2020-04-02] 46th Japanese Meijin, preliminary
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| O Rissei 9p | Cho Chikun 9p | W+2.5 |  |
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| [2017-07-01] 7th Japanese Igo Masters Cup, semi-final
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [2016-03-31] 41st Japanese Kisei, league B1
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [2008-06-19] 33rd Japanese Kisei, league A
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [2007-04-09] 16th Japanese Ryusei, group stage
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [2006-10-05] 31st Japanese Kisei, league B
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [2005-04-27] 43rd Japanese Judan, title match #5
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| Cho Chikun 9p | O Rissei 9p | B+5.5 | |
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| [2005-04-14] 43rd Japanese Judan, title match #4
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [2005-04-07] 43rd Japanese Judan, title match #3
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| Cho Chikun 9p | O Rissei 9p | W+19.5 | |
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| [2005-03-17] 43rd Japanese Judan, title match #2
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| O Rissei 9p | Cho Chikun 9p | B+5.5 | |
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| [2005-03-03] 43rd Japanese Judan, title match #1
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| Cho Chikun 9p | O Rissei 9p | B+0.5 | |
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| [2004-09-16] 1st Zhonghuan Cup, round 1
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| O Rissei 9p | Cho Chikun 9p | B+1.5 | |
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| [2004-08-26] 29th Japanese Kisei, league B
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [2004-07-08] 29th Japanese Meijin, league
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [2003-06-12] 28th Japanese Meijin, league
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| O Rissei 9p | Cho Chikun 9p | B+6.5 | |
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| [2003-03-16] 50th Japanese NHK Cup, semi-final
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| O Rissei 9p | Cho Chikun 9p | B+3.5 | |
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| [2002-03-28] 27th Japanese Gosei, round 3
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| Cho Chikun 9p | O Rissei 9p | B+1.5 | |
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| [2002-02-07] 27th Japanese Meijin, league
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [2001-11-14] 49th Japanese Oza, title match #3
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [2001-11-01] 49th Japanese Oza, title match #2
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| O Rissei 9p | Cho Chikun 9p | W+7.5 | |
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| [2001-10-19] 49th Japanese Oza, title match #1
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [2001-08-02] 26th Japanese Meijin, league
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [2000-12-14] 48th Japanese Oza, title match #4
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [2000-11-30] 48th Japanese Oza, title match #3
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| O Rissei 9p | Cho Chikun 9p | B+6.5 | |
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| [2000-11-22] 48th Japanese Oza, title match #2
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| Cho Chikun 9p | O Rissei 9p | W+0.5 | |
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| [2000-10-23] 48th Japanese Oza, title match #1
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [2000-07-27] 26th Japanese Tengen, round 3
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [2000-03-08] 24th Japanese Kisei, title match #6
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [2000-02-23] 24th Japanese Kisei, title match #5
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| O Rissei 9p | Cho Chikun 9p | B+5.5 | |
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| [2000-02-16] 24th Japanese Kisei, title match #4
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| Cho Chikun 9p | O Rissei 9p | W+12.5 | |
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| [2000-02-02] 24th Japanese Kisei, title match #3
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [2000-01-26] 24th Japanese Kisei, title match #2
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [2000-01-20] 55th Japanese Honinbo, league
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [2000-01-12] 24th Japanese Kisei, title match #1
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| O Rissei 9p | Cho Chikun 9p | W+4.5 | |
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| [1999-12-09] 47th Japanese Oza, title match #4
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [1999-12-02] 47th Japanese Oza, title match #3
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1999-11-18] 47th Japanese Oza, title match #2
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [1999-10-25] 47th Japanese Oza, title match #1
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| Cho Chikun 9p | O Rissei 9p | B+4.5 | |
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| [1999-02-20] 18th Japanese NEC Cup, semi-final
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| O Rissei 9p | Cho Chikun 9p | B+0.5 | |
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| [1998-11-11] 23rd Japanese Meijin, title match #7
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| Cho Chikun 9p | O Rissei 9p | B+1.5 | |
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| [1998-11-04] 23rd Japanese Meijin, title match #6
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| Cho Chikun 9p | O Rissei 9p | B+3.5 | |
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| [1998-10-21] 23rd Japanese Meijin, title match #5
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| O Rissei 9p | Cho Chikun 9p | B+3.5 | |
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| [1998-10-14] 23rd Japanese Meijin, title match #4
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| Cho Chikun 9p | O Rissei 9p | Void | |
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| [1998-09-30] 23rd Japanese Meijin, title match #3
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [1998-09-23] 23rd Japanese Meijin, title match #2
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [1998-09-09] 23rd Japanese Meijin, title match #1
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [1998-07-13] 53rd Japanese Honinbo, title match #6
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [1998-06-29] 53rd Japanese Honinbo, title match #5
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1998-06-22] 53rd Japanese Honinbo, title match #4
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [1998-06-11] 53rd Japanese Honinbo, title match #3
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1998-06-01] 53rd Japanese Honinbo, title match #2
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [1998-05-21] 53rd Japanese Honinbo, title match #1
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [1997-12-04] 23rd Japanese Gosei, round 1
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1997-11-27] 36th Japanese Judan, winner section final
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [1997-06-07] 10th Fujitsu Cup, round 3
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [1996-12-19] 22nd Japanese Gosei, round 2
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| Cho Chikun 9p | O Rissei 9p | W+3.5 | |
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| [1996-02-29] 21st Japanese Meijin, league
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| O Rissei 9p | Cho Chikun 9p | W+R | |
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| [1996-02-26] 2nd Japanese JT Cup, semi-final
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [1995-11-16] 43rd Japanese Oza, title match #3
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1995-11-01] 43rd Japanese Oza, title match #2
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [1995-10-19] 43rd Japanese Oza, title match #1
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| Cho Chikun 9p | O Rissei 9p | W+0.5 | |
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| [1995-08-24] 34th Japanese Judan, winner section round 2
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1995-06-15] 20th Japanese Meijin, league
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1995-03-25] 1st Japanese JT Cup, final
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1994-09-17] 1st ACOM Cup All-Japan Quickplay Tournament, final
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1993-07-08] 41st Japanese Oza, round 2
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [1992-10-18] 25th Japanese Hayago Championship, final
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [1992-09-14] 15th Japanese Kakusei, round 2
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| O Rissei 9p | Cho Chikun 9p | B+1.5 | |
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| [1992-03-15] 39th Japanese NHK Cup, final
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [1991-09-05] 30th Japanese Judan, winner section round 2
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| Cho Chikun 9p | O Rissei 9p | W+R | |
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| [1991-07-06] 4th Fujitsu Cup, semi-final
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| Cho Chikun 9p | O Rissei 9p | B+R | |
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| [1990-01-11] 12th Japanese Kakusei, semi-final
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| O Rissei 9p | Cho Chikun 9p | B+R | |
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| [1989-09-28] 14th Japanese Kisei, round 2
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| O Rissei 9p | Cho Chikun 9p | W+3.5 | |
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| [1987-12-07] 35th Japanese NHK Cup, round 3
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| Cho Chikun 9p | O Rissei 8p | W+9.5 | |
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| [1987-07-23] 35th Japanese Oza, semi-final
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| Cho Chikun 9p | O Rissei 8p | B+R | |
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| [1987-04-16] 42nd Japanese Honinbo, league
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| Cho Chikun 9p | O Rissei 8p | W+1.5 | |
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| [1986-05-29] 34th Japanese Oza, round 1
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| O Rissei 8p | Cho Chikun 9p | W+3.5 | |
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| [1986-04-24] 11th Japanese Gosei, round 3
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| Cho Chikun 9p | O Rissei 8p | B+R | |
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| [1985-01-24] 10th Japanese Gosei, round 2
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| Cho Chikun 9p | O Rissei 7p | B+1.5 | |
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| [1981-05-11] 29th Japanese Oza, preliminary
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| O Rissei 6p | Cho Chikun 9p | B+2.5 | |
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