Games Between Two Players
Cho Chikun (11 win; 10 loss) vs. Cho Sonjin
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2017-12-21] 66th Japanese Oza, preliminary
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| Cho Sonjin 9p | Cho Chikun 9p | B+R |  |
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| [2008-11-06] 22nd Fujitsu Cup, Japanese preliminary
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| Cho Chikun 9p | Cho Sonjin 9p | W+3.5 | |
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| [2007-09-27] 33rd Japanese Meijin, preliminary
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| Cho Sonjin 9p | Cho Chikun 9p | W+R | |
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| [2005-07-21] 12th Japanese Agon Cup, round 1
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| Cho Sonjin 9p | Cho Chikun 9p | W+R | |
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| [2005-05-30] 14th Japanese Ryusei, round 2
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| Cho Chikun 9p | Cho Sonjin 9p | B+R | |
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| [2004-09-30] 30th Japanese Gosei, preliminary
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| Cho Chikun 9p | Cho Sonjin 9p | B+0.5 | |
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| [2004-03-04] 30th Japanese Tengen, round 2
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| Cho Chikun 9p | Cho Sonjin 9p | B+3.5 | |
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| [2003-02-13] 58th Japanese Honinbo, league
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| Cho Sonjin 9p | Cho Chikun 9p | B+R | |
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| [2002-08-01] 27th Japanese Meijin, league
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| Cho Sonjin 9p | Cho Chikun 9p | W+R | |
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| [2002-06-20] 27th Japanese Kisei, league B
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| Cho Sonjin 9p | Cho Chikun 9p | B+R | |
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| [2001-11-22] 57th Japanese Honinbo, league
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| Cho Chikun 9p | Cho Sonjin 9p | B+R | |
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| [2001-07-12] 26th Japanese Meijin, league
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| Cho Chikun 9p | Cho Sonjin 9p | W+6.5 | |
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| [2001-04-05] 56th Japanese Honinbo, league
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| Cho Chikun 9p | Cho Sonjin 9p | B+R | |
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| [2000-10-08] 7th Japanese Agon Cup, final
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| Cho Sonjin 9p | Cho Chikun 9p | B+R | |
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| [1999-07-05] 54th Japanese Honinbo, title match #6
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| Cho Sonjin 9p | Cho Chikun 9p | B+R | |
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| [1999-06-22] 54th Japanese Honinbo, title match #5
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| Cho Chikun 9p | Cho Sonjin 9p | W+2.5 | |
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| [1999-06-10] 54th Japanese Honinbo, title match #4
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| Cho Sonjin 9p | Cho Chikun 9p | B+0.5 | |
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| [1999-05-31] 54th Japanese Honinbo, title match #3
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| Cho Chikun 9p | Cho Sonjin 9p | B+7.5 | |
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| [1999-05-24] 54th Japanese Honinbo, title match #2
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| Cho Sonjin 9p | Cho Chikun 9p | B+R | |
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| [1999-05-12] 54th Japanese Honinbo, title match #1
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| Cho Chikun 9p | Cho Sonjin 9p | B+6.5 | |
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| [1992-07-20] 2nd Japanese Ryusei, semi-final
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| Cho Chikun 9p | Cho Sonjin 7p | B+2.5 | |
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