Games Between Two Players
Kobayashi Koichi (3 win; 0 loss) vs. Horimoto Mitsunari
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2017-09-07] 44th Japanese Tengen, preliminary
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| Horimoto Mitsunari 4p | Kobayashi Koichi 9p | W+R |  |
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| [2016-05-12] 42nd Japanese Meijin, preliminary
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| Horimoto Mitsunari 4p | Kobayashi Koichi 9p | W+0.5 | |
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| [2010-02-04] 66th Japanese Honinbo, preliminary
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| Horimoto Mitsunari 2p | Kobayashi Koichi 9p | W+7.5 | |
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