The Dai-ichi was a Go competition.
The Dai-ichi ran from 1959 to 1975, although before 1970 only players from the Nihon Ki-in could compete. From 1970 and on, players from all over Japan could compete.After 1975 it became the Gosei tournament.
| Year | Winner | Score | Runner-up | |
| 1. | 1959 | Fujisawa Hideyuki | 2-0 | Miyashita Shuyo |
| 2. | 1961 | Sakata Eio | 2-1 | Takagawa Kaku |
| 3. | 1963 | 2-0 | ||
| 4. | 1964 | 2-0 | Ohira Shuzo | |
| 5. | 1965 | 2-1 | ||
| 6. | 1967 | Otake Hideo | 2-1 | Takagawa Kaku |
| 7. | 1968 | 2-1 | Ohira Shuzo |
| Year | Winner | Score | Runner-up | |
| 1. | 1970 | Otake Hideo | 2-1 | Fujisawa Shuko |
| 2. | 1971 | 2-0 | Kato Masao | |
| 3. | 1973 | 2-0 | Kajiwara Takeo | |
| 4. | 1974 | 2-0 | Fujisawa Shuko | |
| 5. | 1975 | 2-1 | Kudo Norio |