Games Between Two Players
Kato Masao (21 win; 15 loss) vs. Sakata Eio
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [1996-12-29] 44th Japanese NHK Cup, round 3
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| Sakata Eio 9p | Kato Masao 9p | B+R |  |
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| [1988-06-30] 27th Japanese Judan, winner section round 1
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| Kato Masao 9p | Sakata Eio 9p | B+1.5 | |
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| [1986-12-18] 42nd Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 9p | W+1.5 | |
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| [1984-10-27] 4th Japanese NEC Cup, round 2
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| Kato Masao 9p | Sakata Eio 9p | B+5.5 | |
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| [1984-05-17] 9th Japanese Meijin, league
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| Sakata Eio 9p | Kato Masao 9p | W+1.5 | |
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| [1984-02-26] 31st Japanese NHK Cup, round 4
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| Kato Masao 9p | Sakata Eio 9p | B+R | |
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| [1983-01-27] 8th Japanese Meijin, league
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| Kato Masao 9p | Sakata Eio 9p | B+9.5 | |
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| [1982-02-18] 7th Japanese Meijin, league
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| Kato Masao 9p | Sakata Eio 9p | W+R | |
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| [1981-11-19] 37th Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 9p | W+R | |
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| [1981-06-25] 6th Japanese Meijin, league
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| Sakata Eio 9p | Kato Masao 9p | W+3.5 | |
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| [1981-05-07] 36th Japanese Honinbo, league
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| Kato Masao 9p | Sakata Eio 9p | W+R | |
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| [1981-03-01] 13th Japanese Hayago Championship, final 3
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| Sakata Eio 9p | Kato Masao 9p | B+R | |
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| [1981-02-15] 13th Japanese Hayago Championship, final 2
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| Sakata Eio 9p | Kato Masao 9p | B+R | |
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| [1981-02-01] 13th Japanese Hayago Championship, final 1
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| Kato Masao 9p | Sakata Eio 9p | B+R | |
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| [1980-09-17] 19th Japanese Judan, loser section round 2
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| Sakata Eio 9p | Kato Masao 9p | B+R | |
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| [1980-06-26] 5th Japanese Meijin, league
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| Kato Masao 9p | Sakata Eio 9p | B+1.5 | |
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| [1978-12-27] 4th Japanese Meijin, league
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| Sakata Eio 9p | Kato Masao 9p | B+4.5 | |
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| [1978-11-26] 3rd Japanese Kisei, semi-final
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| Kato Masao 9p | Sakata Eio 9p | W+2.5 | |
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| [1978-07-27] 3rd Japanese Meijin, league
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| Sakata Eio 9p | Kato Masao 9p | B+R | |
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| [1977-04-13] 15th Japanese Judan, title match #3
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| Sakata Eio 9p | Kato Masao 9p | W+6.5 | |
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| [1977-03-23] 15th Japanese Judan, title match #2
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| Kato Masao 9p | Sakata Eio 9p | B+3.5 | |
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| [1977-03-17] 32nd Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 8p | W+3.5 | |
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| [1977-03-09] 15th Japanese Judan, title match #1
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| Sakata Eio 9p | Kato Masao 9p | W+5.5 | |
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| [1977-02-17] 2nd Japanese Meijin, league
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| Kato Masao 8p | Sakata Eio 9p | B+1.5 | |
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| [1976-07-22] 1st Japanese Kisei
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| Kato Masao 8p | Sakata Eio 9p | B+R | |
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| [1976-05-21] 31st Japanese Honinbo, challenger play-off
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| Kato Masao 8p | Sakata Eio 9p | B+R | |
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| [1976-01-08] 31st Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 8p | B+R | |
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| [1974-12-12] 30th Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 8p | B+R | |
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| [1974-05-15] 29th Japanese Honinbo, challenger play-off
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| Kato Masao 8p | Sakata Eio 9p | B+4.5 | |
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| [1974-04-17] 29th Japanese Honinbo, league
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| Kato Masao 8p | Sakata Eio 9p | B+4.5 | |
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| [1973-02-07] 28th Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 7p | B+R | |
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| [1972-10-19] 10th Japanese Pro Best Ten, round 2
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| Sakata Eio 9p | Kato Masao 7p | B+R | |
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| [1972-01-12] 27th Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 7p | B+R | |
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| [1971-02-17] 26th Japanese Honinbo, league
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| Kato Masao 6p | Sakata Eio 9p | B+R | |
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| [1970-03-04] 25th Japanese Honinbo, league
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| Sakata Eio 9p | Kato Masao 6p | B+11.5 | |
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| [1969-01-23] 24th Japanese Honinbo, league
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| Kato Masao 5p | Sakata Eio 9p | B+7.5 | |
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