Games Between Two Players
O Rissei (3 win; 2 loss) vs. Kato Atsushi
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2022-12-15] 49th Japanese Tengen, preliminary A
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| Kato Atsushi 9p | O Rissei 9p | W+1.5 |  |
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| [2011-11-27] 59th Japanese NHK Cup, round 2
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| Kato Atsushi 9p | O Rissei 9p | W+2.5 | |
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| [2009-01-04] 56th Japanese NHK Cup, round 3
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| Kato Atsushi 8p | O Rissei 9p | B+5.5 | |
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| [2006-09-14] 31st Japanese Kisei, league B
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| Kato Atsushi 8p | O Rissei 9p | B+3.5 | |
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| [2002-05-09] 28th Japanese Tengen, round 2
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| O Rissei 9p | Kato Atsushi 8p | B+5.5 | |
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