Games Between Two Players
O Meien (4 win; 2 loss) vs. Ko Iso
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2021-09-23] 46th Japanese Kisei, league C
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| O Meien 9p | Ko Iso 9p | B+R |  |
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| [2019-07-18] 44th Japanese Kisei, league B2
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| O Meien 9p | Ko Iso 8p | W+R | |
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| [2019-02-14] 45th Japanese Tengen, round 1
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| O Meien 9p | Ko Iso 8p | B+R | |
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| [2017-10-12] 44th Japanese Tengen, preliminary
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| O Meien 9p | Ko Iso 8p | W+1.5 | |
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| [2010-02-25] 35th Japanese Kisei, preliminary
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| Ko Iso 7p | O Meien 9p | W+R | |
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| [2007-08-23] 63rd Japanese Honinbo, preliminary
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| O Meien 9p | Ko Iso 7p | B+R | |
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