Reactordle
Puzzle #107 was Fugen Nuclear Power Plant.
Fugen ふげん was a prototype Japanese nuclear test reactor. Fugen was a domestic Japanese design for a demonstration Advanced Thermal Reactor. It was a heavy water moderated, boiling light water cooled reactor.
What the record says
Puzzle 107 ran on 30 Oct 2026 and the answer was Fugen Nuclear Power Plant, played with 6 guesses against 4 columns. On the record: Country - Japan; Power band - <500 MW; Status - shutdown. The numbers: Grid connection - 1970s.
Beyond the grid the record adds Nominal power - 165 MW (<500 MW); First grid connection - 1979; Operator - Japan Atomic Energy Agency.
Reactordle builds its record from Wikidata - CC0 1.0. The description above comes from the same place the game credits on every reveal: English Wikipedia verbatim extract plus sourced facts, CC BY-SA 4.0. The puzzle itself is still playable in the archive, and every answer that has been and gone is listed on the past-answers page.
How it scored
- Country
- Japan
- Power band
- <500 MW
- Grid connection
- 1970s
- Status
- shutdown
Also on the record
- Nominal power
- 165 MW (<500 MW)
- First grid connection
- 1979
- Operator
- Japan Atomic Energy Agency