Games Between Two Players
Kato Masao (2 win; 0 loss) vs. Sekiyama Toshio
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [1987-01-29] 12th Japanese Gosei, round 2
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| Kato Masao 9p | Sekiyama Toshio 9p | B+1.5 |  |
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| [1972-04-13] 11th Japanese Judan, winner section round 1
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| Kato Masao 7p | Sekiyama Toshio 9p | B+0.5 | |
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