# Queens puzzle rules (Coronet)

Coronet enforces four constraints on every board:

1. Exactly one crown per **row**
2. Exactly one crown per **column**
3. Exactly one crown per **color region**
4. Crowns cannot **touch**, including diagonally

X marks are notes, not scored. Today’s size varies; practice goes 5×5–12×12.

Play: https://coronet.one/  
How to play: https://coronet.one/guides/how-to-play-queens-puzzle.md