Games Between Two Players
Kobayashi Koichi (5 win; 4 loss) vs. Mimura Tomoyasu
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2020-12-17] 77th Japanese Honinbo, preliminary
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| Mimura Tomoyasu 9p | Kobayashi Koichi 9p | W+R |  |
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| [2015-06-11] 41st Japanese Gosei, preliminary
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| Mimura Tomoyasu 9p | Kobayashi Koichi 9p | W+R | |
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| [2011-06-16] 37th Japanese Meijin, preliminary
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| Kobayashi Koichi 9p | Mimura Tomoyasu 9p | W+0.5 | |
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| [2010-06-17] 36th Japanese Meijin, preliminary
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| Kobayashi Koichi 9p | Mimura Tomoyasu 9p | W+R | |
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| [2006-05-28] 54th Japanese NHK Cup, round 1
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| Kobayashi Koichi 9p | Mimura Tomoyasu 9p | B+1.5 | |
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| [2004-05-27] 43rd Japanese Judan, winner section round 1
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| Kobayashi Koichi 9p | Mimura Tomoyasu 9p | W+3.5 | |
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| [2004-03-06] 23rd Japanese NEC Cup, final
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| Kobayashi Koichi 9p | Mimura Tomoyasu 9p | B+2.5 | |
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| [2004-01-08] 59th Japanese Honinbo, league
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| Mimura Tomoyasu 9p | Kobayashi Koichi 9p | B+1.5 | |
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| [1999-05-20] 24th Japanese Meijin, league
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| Kobayashi Koichi 9p | Mimura Tomoyasu 8p | B+R | |
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