Games Between Two Players
Kobayashi Koichi (1 win; 2 loss) vs. Cho Riyu
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2018-06-07] 57th Japanese Judan, preliminary
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| Cho Riyu 8p | Kobayashi Koichi 9p | W+R |  |
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| [2013-11-07] 39th Japanese Kisei, preliminary
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| Cho Riyu 8p | Kobayashi Koichi 9p | B+1.5 | |
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| [2007-02-15] 63rd Japanese Honinbo, preliminary
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| Cho Riyu 7p | Kobayashi Koichi 9p | B+0.5 | |
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