Games Between Two Players
Kobayashi Koichi (4 win; 2 loss) vs. Ogaki Yusaku
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2022-05-09] 31st Japanese Ryusei, group A
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| Ogaki Yusaku 9p | Kobayashi Koichi 9p | B+6.5 |  |
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| [2016-07-14] 42nd Japanese Meijin, preliminary
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| Kobayashi Koichi 9p | Ogaki Yusaku 9p | W+4.5 | |
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| [2012-11-29] 38th Japanese Kisei, preliminary
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| Kobayashi Koichi 9p | Ogaki Yusaku 9p | B+R | |
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| [2009-06-25] 35th Japanese Meijin, preliminary
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| Kobayashi Koichi 9p | Ogaki Yusaku 9p | B+0.5 | |
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| [2009-04-30] 65th Japanese Honinbo, preliminary
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| Ogaki Yusaku 9p | Kobayashi Koichi 9p | W+7.5 | |
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| [1998-07-30] 23rd Japanese Kisei, round 1
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| Ogaki Yusaku 7p | Kobayashi Koichi 9p | W+R | |
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