Games Between Two Players
Kato Masao (2 win; 0 loss) vs. Ishii Mamoru
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [1979-11-01] 5th Japanese Tengen, semi-final
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| Ishii Mamoru 8p | Kato Masao 9p | W+R |  |
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| [1971-03-17] 15th Japanese Prime Minister's Cup, round 2
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| Ishii Mamoru 6p | Kato Masao 6p | W+R | |
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