Games Between Two Players
Kobayashi Koichi (11 win; 13 loss) vs. O Meien
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2022-06-22] 3rd Sinan International Veteran's Tournament, semi-final
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| O Meien 9p | Kobayashi Koichi 9p | B+R |  |
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| [2014-09-04] 53rd Japanese Judan, preliminary
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| O Meien 9p | Kobayashi Koichi 9p | W+R | |
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| [2014-03-20] 4th Japanese Igo Masters Cup, round 1
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| O Meien 9p | Kobayashi Koichi 9p | W+R | |
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| [2011-07-28] 60th Japanese Oza, preliminary
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| Kobayashi Koichi 9p | O Meien 9p | W+4.5 | |
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| [2011-01-20] 36th Japanese Kisei, preliminary
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| O Meien 9p | Kobayashi Koichi 9p | W+0.5 | |
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| [2010-11-11] 37th Japanese Tengen, preliminary
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| O Meien 9p | Kobayashi Koichi 9p | B+5.5 | |
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| [2010-03-04] 19th Japanese Ryusei, group stage
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| O Meien 9p | Kobayashi Koichi 9p | W+R | |
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| [2008-11-20] 35th Japanese Tengen, preliminary
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| O Meien 9p | Kobayashi Koichi 9p | B+1.5 | |
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| [2003-10-02] 59th Japanese Honinbo, league
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| Kobayashi Koichi 9p | O Meien 9p | B+5.5 | |
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| [2002-10-17] 58th Japanese Honinbo, league
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| Kobayashi Koichi 9p | O Meien 9p | W+6.5 | |
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| [2002-09-16] 11th Japanese Ryusei, final
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| Kobayashi Koichi 9p | O Meien 9p | B+6.5 | |
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| [2002-01-10] 40th Japanese Judan, loser section final
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| Kobayashi Koichi 9p | O Meien 9p | W+7.5 | |
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| [2001-08-25] 21st Japanese NEC Cup, round 1
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| O Meien 9p | Kobayashi Koichi 9p | B+R | |
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| [2001-05-30] 49th Japanese Oza, round 2
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| Kobayashi Koichi 9p | O Meien 9p | B+2.5 | |
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| [2000-01-06] 25th Japanese Meijin, league
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| O Meien 9p | Kobayashi Koichi 9p | B+2.5 | |
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| [1999-07-01] 55th Japanese Honinbo, preliminary
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| Kobayashi Koichi 9p | O Meien 9p | W+2.5 | |
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| [1997-06-26] 45th Japanese Oza, round 2
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| Kobayashi Koichi 9p | O Meien 9p | W+4.5 | |
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| [1996-08-01] 21st Japanese Meijin, league
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| O Meien 9p | Kobayashi Koichi 9p | B+6.5 | |
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| [1996-05-22] 52nd Japanese Honinbo, preliminary
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| O Meien 9p | Kobayashi Koichi 9p | W+R | |
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| [1995-04-06] 34th Japanese Judan, preliminary
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| Kobayashi Koichi 9p | O Meien 9p | B+R | |
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| [1994-08-04] 20th Japanese Tengen, round 3
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| O Meien 9p | Kobayashi Koichi 9p | W+0.5 | |
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| [1991-11-30] 11th Japanese NEC Cup, round 2
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| Kobayashi Koichi 9p | O Meien 8p | B+5.5 | |
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| [1987-06-25] 26th Japanese Judan, winner section round 1
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| Kobayashi Koichi 9p | O Meien 7p | W+1.5 | |
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| [1986-01-09] 41st Japanese Honinbo, league
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| O Meien 6p | Kobayashi Koichi 9p | B+2.5 | |
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