Privacy policy
What data this site uses, why, and how to exercise your rights.
1. Who is responsible for this site?
“Le Journal d’un Prodige” is a non-commercial website about Bobby Fischer. Contact: lejournaldunprodige@outlook.com. The site has no commercial purpose.
2. What data is collected?
| Data | Why? | Where does it go? |
|---|---|---|
| Account: email address, first name, last name, password (stored encrypted, never readable), optional profile picture | Let you log in and access the journal | Supabase service (authentication and storage); the session is kept in your browser (storage necessary for operation) |
| Public profile (first name, photo, biography) and private messages between readers | Let readers discover each other and write to each other | Supabase database; the profile is visible to logged-in readers, a message can only be read by its sender and recipient |
| Published comments (first name, photo, message) | Display the readers’ letters | Supabase database, visible to logged-in readers. A notification may be emailed to the editors via FormSubmit |
| Preferences (theme, language, text size, font, animations), cookie choice | Personalise your display | Stored only on your device (browser local storage), and only if you accept |
| Advanced messaging: groups (name and members), replies, emoji reactions, pinned, edited or unsent messages, “Seen” status | Make the messaging work | Supabase database, visible only to the people in the conversation or group. An unsent message is erased, along with its file |
| Reports (reported message, reason) | Moderate conversations and protect readers | Supabase database, readable only by the editors |
| Games and statistics: puzzles solved, Elo rating, daily puzzle, quiz, games against the bot and games between readers (moves played) | Show your progress, badges and the leaderboard | Supabase database. Your scores appear in the leaderboard unless you hide them in “My statistics”; a game between readers is only visible to its two players |
| Online games (if you connect a Lichess account): login token, moves played | Play against players from around the world | Lichess (lichess.org). The login token stays on your device; you can remove it with “Log out”. Games appear on your Lichess account |
| Chat during games (against a reader or online) | Talk during a game; you can hide the chat at any time | Games between readers: Supabase database, visible only to the two players. Online games: Lichess. Game reviews are computed in your browser; a share link contains the game itself, nothing is stored |
The site sets no advertising cookies, no trackers and uses no analytics tools.
3. Third-party services
- Supabase : manages accounts, comments, profile pictures message attachments (private storage) and your statistics (quiz, puzzles, games against the bot), shown on the leaderboard unless you hide them in “My statistics”.
- Assistant Fischer (IA) : the questions you ask the assistant are sent to Google (Gemini) or Anthropic (Claude) to generate the answer; never share personal information. Files attached for the assistant are also sent to it. The conversation history stays on your device.
- Lichess (lichess.org): once you have finished the site’s puzzles, new puzzles are loaded from Lichess, a free chess puzzle database. Your IP address is therefore visible to it; no account data is sent.
- Stockfish : the chess bot runs entirely in your browser (no data is sent).
- Wikimedia Commons : period photos are loaded from this service. Your IP address is therefore visible to it when you open a page.
- Google Fonts : fonts are loaded from Google.
- FormSubmit : used only to notify the editors by email.
These services have their own privacy policies.
4. For how long?
Account data is kept as long as your account exists. You can ask for its deletion at any time. Preferences stay on your device until you clear them or refuse storage.
5. Your rights
You can request access to, correction or deletion of your data by writing to lejournaldunprodige@outlook.com. You can also edit your details on the My account page and your storage choice in Settings. In France you can also contact the CNIL (cnil.fr).
6. Minors
This site may be read by minors. If you are under 15, ask a parent or guardian for permission before creating an account or sending a message.
7. Changes
This policy may change.