Games Between Two Players
O Rissei (7 win; 15 loss) vs. Cho Sonjin
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2010-12-09] 66th Japanese Honinbo, league
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| Cho Sonjin 9p | O Rissei 9p | B+R |  |
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| [2009-10-08] 36th Japanese Tengen, preliminary
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| O Rissei 9p | Cho Sonjin 9p | W+15.5 | |
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| [2008-04-17] 64th Japanese Honinbo, preliminary
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| O Rissei 9p | Cho Sonjin 9p | B+3.5 | |
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| [2007-07-21] 27th Japanese NEC Cup, round 1
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| O Rissei 9p | Cho Sonjin 9p | W+3.5 | |
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| [2007-02-11] 54th Japanese NHK Cup, round 4
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| Cho Sonjin 9p | O Rissei 9p | B+R | |
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| [2006-03-30] 61st Japanese Honinbo, league
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| O Rissei 9p | Cho Sonjin 9p | W+R | |
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| [2004-10-14] 60th Japanese Honinbo, league
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| Cho Sonjin 9p | O Rissei 9p | B+R | |
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| [2004-02-02] 13th Japanese Ryusei, group stage
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| Cho Sonjin 9p | O Rissei 9p | B+2.5 | |
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| [2004-01-15] 59th Japanese Honinbo, league
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| O Rissei 9p | Cho Sonjin 9p | W+R | |
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| [2002-08-29] 28th Japanese Tengen, semi-final
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| Cho Sonjin 9p | O Rissei 9p | B+R | |
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| [2002-04-11] 27th Japanese Meijin, league
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| Cho Sonjin 9p | O Rissei 9p | B+R | |
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| [2001-10-08] 8th Japanese Agon Cup, final
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| Cho Sonjin 9p | O Rissei 9p | B+R | |
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| [2001-03-15] 26th Japanese Meijin, league
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| O Rissei 9p | Cho Sonjin 9p | B+R | |
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| [2001-03-07] 25th Japanese Kisei, title match #6
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| O Rissei 9p | Cho Sonjin 9p | B+5.5 | |
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| [2001-02-21] 25th Japanese Kisei, title match #5
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| Cho Sonjin 9p | O Rissei 9p | W+R | |
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| [2001-02-14] 25th Japanese Kisei, title match #4
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| O Rissei 9p | Cho Sonjin 9p | W+0.5 | |
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| [2001-01-31] 25th Japanese Kisei, title match #3
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| Cho Sonjin 9p | O Rissei 9p | W+R | |
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| [2001-01-24] 25th Japanese Kisei, title match #2
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| O Rissei 9p | Cho Sonjin 9p | B+R | |
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| [2001-01-12] 25th Japanese Kisei, title match #1
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| Cho Sonjin 9p | O Rissei 9p | B+1.5 | |
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| [1999-03-11] 54th Japanese Honinbo, league
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| O Rissei 9p | Cho Sonjin 9p | W+2.5 | |
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| [1998-02-12] 53rd Japanese Honinbo, league
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| Cho Sonjin 8p | O Rissei 9p | W+R | |
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| [1997-07-26] 17th Japanese NEC Cup, round 1
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| Cho Sonjin 8p | O Rissei 9p | B+0.5 | |
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