One crown per row
Place exactly one crown in each row and each column.
Solve colorful regions. Place one crown in each row, column, and region. A calm, elegant logic challenge.

Every move is a clue. Think your way to the right placement instead of guessing.
Place exactly one crown in each row and each column.
Each colored region must contain exactly one crown.
Crowns cannot touch, even diagonally.
Every puzzle brings a new challenge. Explore chapters, practice with daily puzzles, and track your progress.

Start placing crowns.

Discover new puzzles across themed chapters.

Come back for a fresh challenge every day.

Enjoy the satisfaction of every solved puzzle.
One Crown is a crown logic puzzle with colored regions. Place exactly one crown in each row, each column and each colored region. Crowns must not touch, including diagonally.
Begin by eliminating impossible squares, then compare the remaining positions in each region. Use the official how-to-play and tips guides to learn the rules before tackling harder puzzles.
Coming to iPhone. Coming soon to the App Store.
Release information →
Open on your phoneOne Crown is a crown-placement logic puzzle built around deduction rather than speed. Study the board, eliminate impossible positions and place crowns according to the game rules.