The participants are between 31 and 60 years old and have never won one of the seven major tournaments or the Ryusei or Agon-Kiriyama or SGW Cup.
Komi is 6.5. Time limits: For the preliminaries 20s per move, five times 1m. For the main tournament: 30s per move, ten times 1m.
| # | year | winner | runner-up | sgf |
|---|---|---|---|---|
| 1 | 2018 | Rin Kanketsu | Anzai Nobuaki | B+R |
| 2 | 2019 | Ko Iso | Mimura Tomoyasu | B+R |
| 3 | 2020 | Kanazawa Hideo | Kim Sujun | B+R |
| 4 | 2021 | Han Zenki | Okuda Aya | B+3.5 |
| 5 | 2022 | Tsuruyama Atsushi | Anzai Nobuaki | W+R |
| 6 | 2023 | Shida Tatsuya | Mizokami Tomochika | W+R |
| 7 | 2024 | Akiyama Jiro | Anzai Nobuaki | W+R |